diff --git a/README.md b/README.md
index d1607145..7d92ab30 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,6 @@
 - libupnp (Linux/OS X only)
 - libgme (Linux/OS X only)
 
-Warning: 64-bit builds are not netgame compatible with 32-bit builds. Use at your own risk.
-
 ## Compiling
 
 See [SRB2 Wiki/Source code compiling](http://wiki.srb2.org/wiki/Source_code_compiling)
diff --git a/SRB2.cbp b/SRB2.cbp
index 74ec96c6..5aa623fa 100644
--- a/SRB2.cbp
+++ b/SRB2.cbp
@@ -1174,6 +1174,39 @@ HW3SOUND for 3D hardware sound  support
 			<Option target="Debug Mingw64/DirectX" />
 			<Option target="Release Mingw64/DirectX" />
 		</Unit>
+		<Unit filename="src/hardware/hw_clip.c">
+			<Option compilerVar="CC" />
+			<Option target="Debug Native/SDL" />
+			<Option target="Release Native/SDL" />
+			<Option target="Debug Mingw/SDL" />
+			<Option target="Release Mingw/SDL" />
+			<Option target="Debug Mingw/DirectX" />
+			<Option target="Release Mingw/DirectX" />
+			<Option target="Debug Any/Dummy" />
+			<Option target="Release Any/Dummy" />
+			<Option target="Debug Linux/SDL" />
+			<Option target="Release Linux/SDL" />
+			<Option target="Debug Mingw64/SDL" />
+			<Option target="Release Mingw64/SDL" />
+			<Option target="Debug Mingw64/DirectX" />
+			<Option target="Release Mingw64/DirectX" />
+		</Unit>
+		<Unit filename="src/hardware/hw_clip.h">
+			<Option target="Debug Native/SDL" />
+			<Option target="Release Native/SDL" />
+			<Option target="Debug Mingw/SDL" />
+			<Option target="Release Mingw/SDL" />
+			<Option target="Debug Mingw/DirectX" />
+			<Option target="Release Mingw/DirectX" />
+			<Option target="Debug Any/Dummy" />
+			<Option target="Release Any/Dummy" />
+			<Option target="Debug Linux/SDL" />
+			<Option target="Release Linux/SDL" />
+			<Option target="Debug Mingw64/SDL" />
+			<Option target="Release Mingw64/SDL" />
+			<Option target="Debug Mingw64/DirectX" />
+			<Option target="Release Mingw64/DirectX" />
+		</Unit>
 		<Unit filename="src/hardware/hw_data.h">
 			<Option target="Debug Native/SDL" />
 			<Option target="Release Native/SDL" />
diff --git a/libs/SDL2/COPYING.txt b/libs/SDL2/COPYING.txt
index a1c8bbe5..694e58a0 100644
--- a/libs/SDL2/COPYING.txt
+++ b/libs/SDL2/COPYING.txt
@@ -1,6 +1,6 @@
 
 Simple DirectMedia Layer
-Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
   
 This software is provided 'as-is', without any express or implied
 warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/Makefile b/libs/SDL2/Makefile
index a2e6bb9b..9edfd003 100644
--- a/libs/SDL2/Makefile
+++ b/libs/SDL2/Makefile
@@ -1,12 +1,12 @@
 #
 # Makefile for installing the mingw32 version of the SDL library
 
-CROSS_PATH := /usr/local/cross-tools
+CROSS_PATH := /usr/local
 ARCHITECTURES := i686-w64-mingw32 x86_64-w64-mingw32
 
 all install:
 	@echo "Type \"make native\" to install 32-bit to /usr"
-	@echo "Type \"make cross\" to install 32-bit and 64-bit to CROSS_PATH ($(CROSS_PATH))"
+	@echo "Type \"make cross\" to install 32-bit and 64-bit to $(CROSS_PATH)"
 
 native:
 	make install-package arch=i686-w64-mingw32 prefix=/usr
@@ -22,6 +22,7 @@ install-package:
 	    sed "s|^prefix=.*|prefix=$(prefix)|" <$(arch)/bin/sdl2-config >$(prefix)/bin/sdl2-config; \
 	    chmod 755 $(prefix)/bin/sdl2-config; \
 	    sed "s|^libdir=.*|libdir=\'$(prefix)/lib\'|" <$(arch)/lib/libSDL2.la >$(prefix)/lib/libSDL2.la; \
+	    sed "s|^libdir=.*|libdir=\'$(prefix)/lib\'|" <$(arch)/lib/libSDL2main.la >$(prefix)/lib/libSDL2main.la; \
 	    sed "s|^prefix=.*|prefix=$(prefix)|" <$(arch)/lib/pkgconfig/sdl2.pc >$(prefix)/lib/pkgconfig/sdl2.pc; \
 	else \
 	    echo "*** ERROR: $(arch) or $(prefix) does not exist!"; \
diff --git a/libs/SDL2/SRB2NOTE.txt b/libs/SDL2/SRB2NOTE.txt
new file mode 100644
index 00000000..b7da4c9a
--- /dev/null
+++ b/libs/SDL2/SRB2NOTE.txt
@@ -0,0 +1,15 @@
+# SDL Development Libaries
+
+Download both the VC and MinGW packages and extract them here.
+
+https://www.libsdl.org/download-2.0.php
+
+## VC Package
+
+* include
+* lib
+
+## MinGW Package
+
+* i686-w64-mingw32
+* x86_64-w64-mingw32
diff --git a/libs/SDL2/WhatsNew.txt b/libs/SDL2/WhatsNew.txt
index 9c8d5384..9074b12b 100644
--- a/libs/SDL2/WhatsNew.txt
+++ b/libs/SDL2/WhatsNew.txt
@@ -1,6 +1,91 @@
 
 This is a list of major changes in SDL's version history.
 
+---------------------------------------------------------------------------
+2.0.9:
+---------------------------------------------------------------------------
+
+General:
+* Added a new sensor API, initialized by passing SDL_INIT_SENSOR to SDL_Init(), and defined in SDL_sensor.h
+* Added an event SDL_SENSORUPDATE which is sent when a sensor is updated
+* Added SDL_GetDisplayOrientation() to return the current display orientation
+* Added an event SDL_DISPLAYEVENT which is sent when the display orientation changes
+* Added HIDAPI joystick drivers for more consistent support for Xbox, PS4 and Nintendo Switch Pro controller support across platforms. (Thanks to Valve for contributing the PS4 and Nintendo Switch Pro controller support)
+* Added support for many other popular game controllers
+* Added SDL_JoystickGetDevicePlayerIndex(), SDL_JoystickGetPlayerIndex(), and SDL_GameControllerGetPlayerIndex() to get the player index for a controller. For XInput controllers this returns the XInput index for the controller.
+* Added SDL_GameControllerRumble() and SDL_JoystickRumble() which allow simple rumble without using the haptics API
+* Added SDL_GameControllerMappingForDeviceIndex() to get the mapping for a controller before it's opened
+* Added the hint SDL_HINT_MOUSE_DOUBLE_CLICK_TIME to control the mouse double-click time
+* Added the hint SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS to control the mouse double-click radius, in pixels
+* Added SDL_HasColorKey() to return whether a surface has a colorkey active
+* Added SDL_HasAVX512F() to return whether the CPU has AVX-512F features
+* Added SDL_IsTablet() to return whether the application is running on a tablet
+* Added SDL_THREAD_PRIORITY_TIME_CRITICAL for threads that must run at the highest priority
+
+Mac OS X:
+* Fixed black screen at start on Mac OS X Mojave
+
+Linux:
+* Added SDL_LinuxSetThreadPriority() to allow adjusting the thread priority of native threads using RealtimeKit if available.
+
+iOS:
+* Fixed Asian IME input
+
+Android:
+* Updated required Android SDK to API 26, to match Google's new App Store requirements
+* Added support for wired USB Xbox, PS4, and Nintendo Switch Pro controllers
+* Added support for relative mouse mode on Android 7.0 and newer (except where it's broken, on Chromebooks and when in DeX mode with Samsung Experience 9.0)
+* Added support for custom mouse cursors on Android 7.0 and newer
+* Added the hint SDL_HINT_ANDROID_TRAP_BACK_BUTTON to control whether the back button will back out of the app (the default) or be passed to the application as SDL_SCANCODE_AC_BACK
+* Added SDL_AndroidBackButton() to trigger the Android system back button behavior when handling the back button in the application
+* Added SDL_IsChromebook() to return whether the app is running in the Chromebook Android runtime
+* Added SDL_IsDeXMode() to return whether the app is running while docked in the Samsung DeX
+
+
+---------------------------------------------------------------------------
+2.0.8:
+---------------------------------------------------------------------------
+
+General:
+* Added SDL_fmod() and SDL_log10()
+* Each of the SDL math functions now has the corresponding float version
+* Added SDL_SetYUVConversionMode() and SDL_GetYUVConversionMode() to control the formula used when converting to and from YUV colorspace. The options are JPEG, BT.601, and BT.709
+
+Windows:
+* Implemented WASAPI support on Windows UWP and removed the deprecated XAudio2 implementation
+* Added resampling support on WASAPI on Windows 7 and above
+
+Windows UWP:
+* Added SDL_WinRTGetDeviceFamily() to find out what type of device your application is running on
+
+Mac OS X:
+* Added support for the Vulkan SDK for Mac:
+  https://www.lunarg.com/lunarg-releases-vulkan-sdk-1-0-69-0-for-mac/
+* Added support for OpenGL ES using ANGLE when it's available
+
+Mac OS X / iOS / tvOS:
+* Added a Metal 2D render implementation
+* Added SDL_RenderGetMetalLayer() and SDL_RenderGetMetalCommandEncoder() to insert your own drawing into SDL rendering when using the Metal implementation
+
+iOS:
+* Added the hint SDL_HINT_IOS_HIDE_HOME_INDICATOR to control whether the home indicator bar on iPhone X should be hidden. This defaults to dimming the indicator for fullscreen applications and showing the indicator for windowed applications.
+
+iOS / Android:
+* Added the hint SDL_HINT_RETURN_KEY_HIDES_IME to control whether the return key on the software keyboard should hide the keyboard or send a key event (the default)
+
+Android:
+* SDL now supports building with Android Studio and Gradle by default, and the old Ant project is available in android-project-ant
+* SDL now requires the API 19 SDK to build, but can still target devices down to API 14 (Android 4.0.1)
+* Added SDL_IsAndroidTV() to tell whether the application is running on Android TV
+
+Android / tvOS:
+* Added the hint SDL_HINT_TV_REMOTE_AS_JOYSTICK to control whether TV remotes should be listed as joystick devices (the default) or send keyboard events.
+
+Linux:
+* Added the hint SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR to control whether the X server should skip the compositor for the SDL application. This defaults to "1"
+* Added the hint SDL_HINT_VIDEO_DOUBLE_BUFFER to control whether the Raspberry Pi and KMSDRM video drivers should use double or triple buffering (the default)
+
+
 ---------------------------------------------------------------------------
 2.0.7:
 ---------------------------------------------------------------------------
diff --git a/libs/SDL2/docs/README-android.md b/libs/SDL2/docs/README-android.md
index 62874f43..7f3263dc 100644
--- a/libs/SDL2/docs/README-android.md
+++ b/libs/SDL2/docs/README-android.md
@@ -4,20 +4,24 @@ Android
 Matt Styles wrote a tutorial on building SDL for Android with Visual Studio:
 http://trederia.blogspot.de/2017/03/building-sdl2-for-android-with-visual.html
 
-The rest of this README covers the old style build process.
+The rest of this README covers the Android gradle style build process.
+
+If you are using the older ant build process, it is no longer officially
+supported, but you can use the "android-project-ant" directory as a template.
+
 
 ================================================================================
  Requirements
 ================================================================================
 
-Android SDK (version 16 or later)
+Android SDK (version 26 or later)
 https://developer.android.com/sdk/index.html
 
-Android NDK r7 or later
+Android NDK r15c or later
 https://developer.android.com/tools/sdk/ndk/index.html
 
-Minimum API level supported by SDL: 10 (Android 2.3.3)
-Joystick support is available for API level >= 12 devices.
+Minimum API level supported by SDL: 14 (Android 4.0.1)
+
 
 ================================================================================
  How the port works
@@ -31,15 +35,12 @@ Joystick support is available for API level >= 12 devices.
 - This eventually produces a standard Android .apk package
 
 The Android Java code implements an "Activity" and can be found in:
-android-project/src/org/libsdl/app/SDLActivity.java
+android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
 
 The Java code loads your game code, the SDL shared library, and
 dispatches to native functions implemented in the SDL library:
 src/core/android/SDL_android.c
 
-Your project must include some glue code that starts your main() routine:
-src/main/android/SDL_android_main.c
-
 
 ================================================================================
  Building an app
@@ -74,71 +75,30 @@ For more complex projects, follow these instructions:
     
 1. Copy the android-project directory wherever you want to keep your projects
    and rename it to the name of your project.
-2. Move or symlink this SDL directory into the "<project>/jni" directory
-3. Edit "<project>/jni/src/Android.mk" to include your source files
-4. Run 'ndk-build' (a script provided by the NDK). This compiles the C source
+2. Move or symlink this SDL directory into the "<project>/app/jni" directory
+3. Edit "<project>/app/jni/src/Android.mk" to include your source files
 
-If you want to use the Eclipse IDE, skip to the Eclipse section below.
+4a. If you want to use Android Studio, simply open your <project> directory and start building.
 
-5. Create "<project>/local.properties" and use that to point to the Android SDK directory, by writing a line with the following form:
-
-       sdk.dir=PATH_TO_ANDROID_SDK
-
-6. Run 'ant debug' in android/project. This compiles the .java and eventually 
-   creates a .apk with the native code embedded
-7. 'ant debug install' will push the apk to the device or emulator (if connected)
+4b. If you want to build manually, run './gradlew installDebug' in the project directory. This compiles the .java, creates an .apk with the native code embedded, and installs it on any connected Android device
 
 Here's an explanation of the files in the Android project, so you can customize them:
 
-    android-project/
-        AndroidManifest.xml	- package manifest. Among others, it contains the class name
-        			  of the main Activity and the package name of the application.
-        build.properties	- empty
-        build.xml		- build description file, used by ant. The actual application name
-        			  is specified here.
-        default.properties	- holds the target ABI for the application, android-10 and up
-        project.properties	- holds the target ABI for the application, android-10 and up
-        local.properties	- holds the SDK path, you should change this to the path to your SDK
+    android-project/app
+        build.gradle            - build info including the application version and SDK
+        src/main/AndroidManifest.xml	- package manifest. Among others, it contains the class name of the main Activity and the package name of the application.
         jni/			- directory holding native code
-        jni/Android.mk		- Android makefile that can call recursively the Android.mk files
-        			  in all subdirectories
+        jni/Application.mk	- Application JNI settings, including target platform and STL library
+        jni/Android.mk		- Android makefile that can call recursively the Android.mk files in all subdirectories
         jni/SDL/		- (symlink to) directory holding the SDL library files
         jni/SDL/Android.mk	- Android makefile for creating the SDL shared library
         jni/src/		- directory holding your C/C++ source
-        jni/src/Android.mk	- Android makefile that you should customize to include your 
-                                  source code and any library references
-        res/			- directory holding resources for your application
-        res/drawable-*		- directories holding icons for different phone hardware. Could be
-        			  one dir called "drawable".
-        res/layout/main.xml	- Usually contains a file main.xml, which declares the screen layout.
-        			  We don't need it because we use the SDL video output.
-        res/values/strings.xml	- strings used in your application, including the application name
-        			  shown on the phone.
-        src/org/libsdl/app/SDLActivity.java - the Java class handling the initialization and binding
-        			  to SDL.  Be very careful changing this, as the SDL library relies
-        			  on this implementation.
-
-
-================================================================================
- Build an app with static linking of libSDL
-================================================================================
-
-This build uses the Android NDK module system.
-
-Instructions:
-1. Copy the android-project directory wherever you want to keep your projects
-   and rename it to the name of your project.
-2. Rename "<project>/jni/src/Android_static.mk" to "<project>/jni/src/Android.mk"
-   (overwrite the existing one)
-3. Edit "<project>/jni/src/Android.mk" to include your source files
-4. create and export an environment variable named NDK_MODULE_PATH that points
-   to the parent directory of this SDL directory. e.g.:
-
-       export NDK_MODULE_PATH="$PWD"/..
-
-5. Edit "<project>/src/org/libsdl/app/SDLActivity.java" and remove the call to
-   System.loadLibrary("SDL2").
-6. Run 'ndk-build' (a script provided by the NDK). This compiles the C source
+        jni/src/Android.mk	- Android makefile that you should customize to include your source code and any library references
+        src/main/assets/	- directory holding asset files for your application
+        src/main/res/		- directory holding resources for your application
+        src/main/res/mipmap-*	- directories holding icons for different phone hardware
+        src/main/res/values/strings.xml	- strings used in your application, including the application name
+        src/main/java/org/libsdl/app/SDLActivity.java - the Java class handling the initialization and binding to SDL. Be very careful changing this, as the SDL library relies on this implementation. You should instead subclass this for your application.
 
 
 ================================================================================
@@ -171,25 +131,23 @@ Here's an example of a minimal class file:
 Then replace "SDLActivity" in AndroidManifest.xml with the name of your
 class, .e.g. "MyGame"
 
+
 ================================================================================
  Customizing your application icon
 ================================================================================
 
 Conceptually changing your icon is just replacing the "ic_launcher.png" files in
-the drawable directories under the res directory. There are four directories for
-different screen sizes. These can be replaced with one dir called "drawable",
-containing an icon file "ic_launcher.png" with dimensions 48x48 or 72x72.
+the drawable directories under the res directory. There are several directories
+for different screen sizes.
 
-You may need to change the name of your icon in AndroidManifest.xml to match
-this icon filename.
 
 ================================================================================
  Loading assets
 ================================================================================
 
-Any files you put in the "assets" directory of your android-project directory
-will get bundled into the application package and you can load them using the
-standard functions in SDL_rwops.h.
+Any files you put in the "app/src/main/assets" directory of your project
+directory will get bundled into the application package and you can load
+them using the standard functions in SDL_rwops.h.
 
 There are also a few Android specific functions that allow you to get other
 useful paths for saving and loading data:
@@ -211,6 +169,7 @@ disable this behaviour, see for example:
     
 http://ponystyle.com/blog/2010/03/26/dealing-with-asset-compression-in-android-apps/
 
+
 ================================================================================
  Pause / Resume behaviour
 ================================================================================
@@ -231,6 +190,7 @@ a specific message, (which is not yet implemented!) and restore your textures
 manually or quit the app (which is actually the kind of behaviour you'll see
 under iOS, if the OS can not restore your GL context it will just kill your app)
 
+
 ================================================================================
  Threads and the Java VM
 ================================================================================
@@ -246,6 +206,7 @@ Android_JNI_SetupThread() before doing anything else otherwise SDL will attach
 your thread automatically anyway (when you make an SDL call), but it'll never
 detach it.
 
+
 ================================================================================
  Using STL
 ================================================================================
@@ -253,34 +214,10 @@ detach it.
 You can use STL in your project by creating an Application.mk file in the jni
 folder and adding the following line:
 
-    APP_STL := stlport_static
+    APP_STL := c++_shared
 
-For more information check out CPLUSPLUS-SUPPORT.html in the NDK documentation.
-
-================================================================================
- Additional documentation
-================================================================================
-
-The documentation in the NDK docs directory is very helpful in understanding the
-build process and how to work with native code on the Android platform.
-
-The best place to start is with docs/OVERVIEW.TXT
-
-
-================================================================================
- Using Eclipse
-================================================================================
-
-First make sure that you've installed Eclipse and the Android extensions as described here:
-	https://developer.android.com/tools/sdk/eclipse-adt.html
-
-Once you've copied the SDL android project and customized it, you can create an Eclipse project from it:
- * File -> New -> Other
- * Select the Android -> Android Project wizard and click Next
- * Enter the name you'd like your project to have
- * Select "Create project from existing source" and browse for your project directory
- * Make sure the Build Target is set to Android 3.1 (API 12)
- * Click Finish
+For more information go here:
+	https://developer.android.com/ndk/guides/cpp-support
 
 
 ================================================================================
@@ -295,13 +232,11 @@ Especially useful is the info on setting up OpenGL ES 2.0 emulation.
 Notice that this software emulator is incredibly slow and needs a lot of disk space.
 Using a real device works better.
 
+
 ================================================================================
  Troubleshooting
 ================================================================================
 
-You can create and run an emulator from the Eclipse IDE:
- * Window -> Android SDK and AVD Manager
-
 You can see if adb can see any devices with the following command:
 
     adb devices
@@ -338,7 +273,10 @@ You can see the complete command line that ndk-build is using by passing V=1 on
 
     ndk-build V=1
 
-If your application crashes in native code, you can use addr2line to convert the
+If your application crashes in native code, you can use ndk-stack to get a symbolic stack trace:
+	https://developer.android.com/ndk/guides/ndk-stack
+
+If you want to go through the process manually, you can use addr2line to convert the
 addresses in the stack trace to lines in your code.
 
 For example, if your crash looks like this:
@@ -426,36 +364,30 @@ When you're done instrumenting with valgrind, you can disable the wrapper:
 
     adb shell setprop wrap.org.libsdl.app ""
 
+
 ================================================================================
  Graphics debugging
 ================================================================================
 
 If you are developing on a compatible Tegra-based tablet, NVidia provides
-Tegra Graphics Debugger at their website.  Because SDL2 dynamically loads EGL
+Tegra Graphics Debugger at their website. Because SDL2 dynamically loads EGL
 and GLES libraries, you must follow their instructions for installing the
-interposer library on a rooted device.  The non-rooted instructions are not
+interposer library on a rooted device. The non-rooted instructions are not
 compatible with applications that use SDL2 for video.
 
 The Tegra Graphics Debugger is available from NVidia here:
 https://developer.nvidia.com/tegra-graphics-debugger
 
+
 ================================================================================
- Why is API level 10 the minimum required?
+ Why is API level 14 the minimum required?
 ================================================================================
 
-API level 10 is the minimum required level at runtime (that is, on the device) 
-because SDL requires some functionality for running not
-available on older devices. Since the incorporation of joystick support into SDL,
-the minimum SDK required to *build* SDL is version 12. Devices running API levels
-10-11 are still supported, only with the joystick functionality disabled.
-
-Support for native OpenGL ES and ES2 applications was introduced in the NDK for
-API level 4 and 8. EGL was made a stable API in the NDK for API level 9, which
-has since then been obsoleted, with the recommendation to developers to bump the
-required API level to 10.
+The latest NDK toolchain doesn't support targeting earlier than API level 14.
 As of this writing, according to https://developer.android.com/about/dashboards/index.html
-about 90% of the Android devices accessing Google Play support API level 10 or
-higher (March 2013).
+about 99% of the Android devices accessing Google Play support API level 14 or
+higher (October 2017).
+
 
 ================================================================================
  A note regarding the use of the "dirty rectangles" rendering technique
@@ -475,6 +407,7 @@ screen each frame.
 
 Reference: http://www.khronos.org/registry/egl/specs/EGLTechNote0001.html
 
+
 ================================================================================
  Known issues
 ================================================================================
diff --git a/libs/SDL2/docs/README-dynapi.md b/libs/SDL2/docs/README-dynapi.md
index bfaecb34..b9a58bce 100644
--- a/libs/SDL2/docs/README-dynapi.md
+++ b/libs/SDL2/docs/README-dynapi.md
@@ -64,7 +64,7 @@ level of indirection, we can do things like this:
     export SDL_DYNAMIC_API=/my/actual/libSDL-2.0.so.0
     ./MyGameThatIsStaticallyLinkedToSDL2
 
-And now, this game that is staticallly linked to SDL, can still be overridden 
+And now, this game that is statically linked to SDL, can still be overridden 
 with a newer, or better, SDL. The statically linked one will only be used as 
 far as calling into the jump table in this case. But in cases where no override
 is desired, the statically linked version will provide its own jump table, 
diff --git a/libs/SDL2/docs/README-raspberrypi.md b/libs/SDL2/docs/README-raspberrypi.md
index d64e7cb3..2c95e064 100644
--- a/libs/SDL2/docs/README-raspberrypi.md
+++ b/libs/SDL2/docs/README-raspberrypi.md
@@ -27,6 +27,16 @@ OpenGL ES 2.x, it usually comes pre-installed, but in any case:
     
 sudo apt-get install libraspberrypi0 libraspberrypi-bin libraspberrypi-dev
 
+
+================================================================================
+ NEON
+================================================================================
+
+If your Pi has NEON support, make sure you add -mfpu=neon to your CFLAGS so
+that SDL will select some otherwise-disabled highly-optimized code. The
+original Pi units don't have NEON, the Pi2 probably does, and the Pi3
+definitely does.
+
 ================================================================================
  Cross compiling from x86 Linux
 ================================================================================
diff --git a/libs/SDL2/docs/README-winrt.md b/libs/SDL2/docs/README-winrt.md
index 8e993b57..35b7e6d8 100644
--- a/libs/SDL2/docs/README-winrt.md
+++ b/libs/SDL2/docs/README-winrt.md
@@ -23,7 +23,7 @@ Requirements
     typically do not include support for creating WinRT apps, to note.
     (The "Community" editions of Visual C++ do, however, support both
     desktop/Win32 and WinRT development).
-  - Visual Studio 2017 can be used, however it is recommented that you install
+  - Visual Studio 2017 can be used, however it is recommended that you install
     the Visual C++ 2015 build tools.  These build tools can be installed
     using VS 2017's installer.  Be sure to also install the workload for
     "Universal Windows Platform development", its optional component, the
@@ -33,7 +33,7 @@ Requirements
     earlier versions of Windows, such as Windows 7, is not always supported
     by Visual Studio, and you may get error(s) when attempting to do so.
   - Visual C++ 2012 can only build apps that target versions 8.0 of Windows,
-    or  Windows Phone.  8.0-targetted apps will run on devices running 8.1
+    or  Windows Phone.  8.0-targeted apps will run on devices running 8.1
     editions of Windows, however they will not be able to take advantage of
     8.1-specific features.
   - Visual C++ 2013 cannot create app projects that target Windows 8.0.
@@ -54,7 +54,7 @@ Requirements
 Status
 ------
 
-Here is a rough list of what works, and what doens't:
+Here is a rough list of what works, and what doesn't:
 
 * What works:
   * compilation via Visual C++ 2012 through 2015
@@ -70,7 +70,10 @@ Here is a rough list of what works, and what doens't:
     SDL_GetPerformanceFrequency(), etc.)
   * file I/O via SDL_RWops
   * mouse input  (unsupported on Windows Phone)
-  * audio, via a modified version of SDL's XAudio2 backend
+  * audio, via SDL's WASAPI backend (if you want to record, your app must 
+    have "Microphone" capabilities enabled in its manifest, and the user must 
+    not have blocked access. Otherwise, capture devices will fail to work,
+    presenting as a device disconnect shortly after opening it.)
   * .DLL file loading.  Libraries *MUST* be packaged inside applications.  Loading
     anything outside of the app is not supported.
   * system path retrieval via SDL's filesystem APIs
diff --git a/libs/SDL2/i686-w64-mingw32/bin/SDL2.dll b/libs/SDL2/i686-w64-mingw32/bin/SDL2.dll
index c21f747c..70177904 100755
Binary files a/libs/SDL2/i686-w64-mingw32/bin/SDL2.dll and b/libs/SDL2/i686-w64-mingw32/bin/SDL2.dll differ
diff --git a/libs/SDL2/i686-w64-mingw32/bin/sdl2-config b/libs/SDL2/i686-w64-mingw32/bin/sdl2-config
index 7fdb8251..e1060b3f 100755
--- a/libs/SDL2/i686-w64-mingw32/bin/sdl2-config
+++ b/libs/SDL2/i686-w64-mingw32/bin/sdl2-config
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-prefix=/usr/local/i686-w64-mingw32
+prefix=/opt/local/i686-w64-mingw32
 exec_prefix=${prefix}
 exec_prefix_set=no
 libdir=${exec_prefix}/lib
@@ -39,17 +39,17 @@ while test $# -gt 0; do
       echo $exec_prefix
       ;;
     --version)
-      echo 2.0.7
+      echo 2.0.9
       ;;
     --cflags)
       echo -I${prefix}/include/SDL2  -Dmain=SDL_main
       ;;
     --libs)
-      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2  -mwindows
+      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2 -mwindows
       ;;
     --static-libs)
 #    --libs|--static-libs)
-      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2  -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -static-libgcc
+      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2 -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
       ;;
     *)
       echo "${usage}" 1>&2
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL.h
index 366d50fa..fc35a419 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,6 +51,7 @@
 #include "SDL_power.h"
 #include "SDL_render.h"
 #include "SDL_rwops.h"
+#include "SDL_sensor.h"
 #include "SDL_shape.h"
 #include "SDL_system.h"
 #include "SDL_thread.h"
@@ -80,10 +81,11 @@ extern "C" {
 #define SDL_INIT_HAPTIC         0x00001000u
 #define SDL_INIT_GAMECONTROLLER 0x00002000u  /**< SDL_INIT_GAMECONTROLLER implies SDL_INIT_JOYSTICK */
 #define SDL_INIT_EVENTS         0x00004000u
+#define SDL_INIT_SENSOR         0x00008000u
 #define SDL_INIT_NOPARACHUTE    0x00100000u  /**< compatibility; this flag is ignored. */
 #define SDL_INIT_EVERYTHING ( \
                 SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | \
-                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER \
+                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER | SDL_INIT_SENSOR \
             )
 /* @} */
 
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_assert.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_assert.h
index 90abbe39..b38f928a 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_assert.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_atomic.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_atomic.h
index 36e37f3b..b2287748 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_atomic.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_atomic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -158,6 +158,9 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
 #if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("lwsync" : : : "memory")
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("lwsync" : : : "memory")
+#elif defined(__GNUC__) && defined(__aarch64__)
+#define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
+#define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 #elif defined(__GNUC__) && defined(__arm__)
 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_audio.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_audio.h
index f119c2b2..d3e1bfac 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_audio.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_audio.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -140,7 +140,8 @@ typedef Uint16 SDL_AudioFormat;
 #define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE    0x00000001
 #define SDL_AUDIO_ALLOW_FORMAT_CHANGE       0x00000002
 #define SDL_AUDIO_ALLOW_CHANNELS_CHANGE     0x00000004
-#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE)
+#define SDL_AUDIO_ALLOW_SAMPLES_CHANGE      0x00000008
+#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE)
 /* @} */
 
 /* @} *//* Audio flags */
@@ -527,7 +528,7 @@ extern DECLSPEC SDL_AudioStream * SDLCALL SDL_NewAudioStream(const SDL_AudioForm
  *
  *  \param stream The stream the audio data is being added to
  *  \param buf A pointer to the audio data to add
- *  \param int The number of bytes to write to the stream
+ *  \param len The number of bytes to write to the stream
  *  \return 0 on success, or -1 on error.
  *
  *  \sa SDL_NewAudioStream
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_bits.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_bits.h
index bc285729..eb8322f0 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_bits.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_bits.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_blendmode.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_blendmode.h
index 9abd0bd4..36a5ea76 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_blendmode.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_blendmode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_clipboard.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_clipboard.h
index 341f4ba4..f28751eb 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_clipboard.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_clipboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_config.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_config.h
index 1bbb8384..c58be8e7 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_config.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_config.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -82,6 +82,9 @@ typedef unsigned int uintptr_t;
 #define HAVE_DSOUND_H 1
 #define HAVE_DXGI_H 1
 #define HAVE_XINPUT_H 1
+#define HAVE_MMDEVICEAPI_H 1
+#define HAVE_AUDIOCLIENT_H 1
+#define HAVE_ENDPOINTVOLUME_H 1
 
 /* This is disabled by default to avoid C runtime dependencies and manifest requirements */
 #ifdef HAVE_LIBC
@@ -109,13 +112,15 @@ typedef unsigned int uintptr_t;
 #define HAVE_MEMCMP 1
 #define HAVE_STRLEN 1
 #define HAVE__STRREV 1
-#define HAVE__STRUPR 1
-#define HAVE__STRLWR 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__STRUPR */
+/* #undef HAVE__STRLWR */
 #define HAVE_STRCHR 1
 #define HAVE_STRRCHR 1
 #define HAVE_STRSTR 1
-#define HAVE__LTOA 1
-#define HAVE__ULTOA 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__LTOA */
+/* #undef HAVE__ULTOA */
 #define HAVE_STRTOL 1
 #define HAVE_STRTOUL 1
 #define HAVE_STRTOD 1
@@ -125,30 +130,45 @@ typedef unsigned int uintptr_t;
 #define HAVE_STRNCMP 1
 #define HAVE__STRICMP 1
 #define HAVE__STRNICMP 1
-#define HAVE_ATAN 1
-#define HAVE_ATAN2 1
-#define HAVE_ACOS  1
-#define HAVE_ASIN  1
-#define HAVE_CEIL 1
-#define HAVE_COS 1
-#define HAVE_COSF 1
-#define HAVE_FABS 1
-#define HAVE_FLOOR 1
-#define HAVE_LOG 1
-#define HAVE_POW 1
-#define HAVE_SIN 1
-#define HAVE_SINF 1
-#define HAVE_SQRT 1
-#define HAVE_SQRTF 1
-#define HAVE_TAN 1
-#define HAVE_TANF 1
-#define HAVE__COPYSIGN 1
+#define HAVE_ACOS   1
+#define HAVE_ACOSF  1
+#define HAVE_ASIN   1
+#define HAVE_ASINF  1
+#define HAVE_ATAN   1
+#define HAVE_ATANF  1
+#define HAVE_ATAN2  1
+#define HAVE_ATAN2F 1
+#define HAVE_CEILF  1
+#define HAVE__COPYSIGN  1
+#define HAVE_COS    1
+#define HAVE_COSF   1
+#define HAVE_EXP    1
+#define HAVE_EXPF   1
+#define HAVE_FABS   1
+#define HAVE_FABSF  1
+#define HAVE_FLOOR  1
+#define HAVE_FLOORF 1
+#define HAVE_FMOD   1
+#define HAVE_FMODF  1
+#define HAVE_LOG    1
+#define HAVE_LOGF   1
+#define HAVE_LOG10  1
+#define HAVE_LOG10F 1
+#define HAVE_POW    1
+#define HAVE_POWF   1
+#define HAVE_SIN    1
+#define HAVE_SINF   1
+#define HAVE_SQRT   1
+#define HAVE_SQRTF  1
+#define HAVE_TAN    1
+#define HAVE_TANF   1
 #if defined(_MSC_VER)
 /* These functions were added with the VC++ 2013 C runtime library */
 #if _MSC_VER >= 1800
 #define HAVE_STRTOLL 1
 #define HAVE_VSSCANF 1
 #define HAVE_SCALBN 1
+#define HAVE_SCALBNF    1
 #endif
 /* This function is available with at least the VC++ 2008 C runtime library */
 #if _MSC_VER >= 1400
@@ -166,7 +186,6 @@ typedef unsigned int uintptr_t;
 /* Enable various audio drivers */
 #define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DSOUND 1
-#define SDL_AUDIO_DRIVER_XAUDIO2    0
 #define SDL_AUDIO_DRIVER_WINMM  1
 #define SDL_AUDIO_DRIVER_DISK   1
 #define SDL_AUDIO_DRIVER_DUMMY  1
@@ -174,9 +193,13 @@ typedef unsigned int uintptr_t;
 /* Enable various input drivers */
 #define SDL_JOYSTICK_DINPUT 1
 #define SDL_JOYSTICK_XINPUT 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_HAPTIC_DINPUT   1
 #define SDL_HAPTIC_XINPUT   1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
 
@@ -194,7 +217,7 @@ typedef unsigned int uintptr_t;
 #define SDL_VIDEO_RENDER_D3D    1
 #endif
 #ifndef SDL_VIDEO_RENDER_D3D11
-#define SDL_VIDEO_RENDER_D3D11	0
+#define SDL_VIDEO_RENDER_D3D11  0
 #endif
 
 /* Enable OpenGL support */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_cpuinfo.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_cpuinfo.h
index 94b64b03..ee3a47e8 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_cpuinfo.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_cpuinfo.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,27 +51,35 @@
 #include <intrin.h>
 #else
 #ifdef __ALTIVEC__
-#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__)
+#if defined(HAVE_ALTIVEC_H) && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
 #include <altivec.h>
 #undef pixel
+#undef bool
 #endif
 #endif
-#ifdef __MMX__
-#include <mmintrin.h>
+#if defined(__ARM_NEON__) && !defined(SDL_DISABLE_ARM_NEON_H)
+#include <arm_neon.h>
 #endif
-#ifdef __3dNOW__
+#if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
 #include <mm3dnow.h>
 #endif
-#ifdef __SSE__
+#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
+#include <immintrin.h>
+#else
+#if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
+#include <mmintrin.h>
+#endif
+#if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H)
 #include <xmmintrin.h>
 #endif
-#ifdef __SSE2__
+#if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H)
 #include <emmintrin.h>
 #endif
-#ifdef __SSE3__
+#if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H)
 #include <pmmintrin.h>
 #endif
-#endif
+#endif /* HAVE_IMMINTRIN_H */
+#endif /* compiler version */
 
 #include "begin_code.h"
 /* Set up for C function definitions, even when using C++ */
@@ -154,6 +162,11 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
+/**
+ *  This function returns true if the CPU has AVX-512F (foundation) features.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
+
 /**
  *  This function returns true if the CPU has NEON (ARM SIMD) features.
  */
@@ -164,7 +177,6 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
  */
 extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
 
-
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_egl.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_egl.h
index e47fbe86..d65ed437 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_egl.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_egl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -24,7 +24,7 @@
  *
  *  This is a simple file to encapsulate the EGL API headers.
  */
-#ifndef _MSC_VER
+#if !defined(_MSC_VER) && !defined(__ANDROID__)
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_endian.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_endian.h
index 3eda7f28..ed0bf5ba 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_endian.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_endian.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_error.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_error.h
index 49be9827..c0e46298 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_error.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_error.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_events.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_events.h
index 0fc09bc3..af22eb64 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_events.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_events.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -85,6 +85,9 @@ typedef enum
                                      Called on Android in onResume()
                                 */
 
+    /* Display events */
+    SDL_DISPLAYEVENT   = 0x150,  /**< Display state change */
+
     /* Window events */
     SDL_WINDOWEVENT    = 0x200, /**< Window state change */
     SDL_SYSWMEVENT,             /**< System specific event */
@@ -144,6 +147,9 @@ typedef enum
     SDL_AUDIODEVICEADDED = 0x1100, /**< A new audio device is available */
     SDL_AUDIODEVICEREMOVED,        /**< An audio device has been removed. */
 
+    /* Sensor events */
+    SDL_SENSORUPDATE = 0x1200,     /**< A sensor was updated */
+
     /* Render events */
     SDL_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
     SDL_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
@@ -168,6 +174,21 @@ typedef struct SDL_CommonEvent
     Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
 } SDL_CommonEvent;
 
+/**
+ *  \brief Display state change event data (event.display.*)
+ */
+typedef struct SDL_DisplayEvent
+{
+    Uint32 type;        /**< ::SDL_DISPLAYEVENT */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Uint32 display;     /**< The associated display index */
+    Uint8 event;        /**< ::SDL_DisplayEventID */
+    Uint8 padding1;
+    Uint8 padding2;
+    Uint8 padding3;
+    Sint32 data1;       /**< event dependent data */
+} SDL_DisplayEvent;
+
 /**
  *  \brief Window state change event data (event.window.*)
  */
@@ -471,6 +492,17 @@ typedef struct SDL_DropEvent
 } SDL_DropEvent;
 
 
+/**
+ *  \brief Sensor event structure (event.sensor.*)
+ */
+typedef struct SDL_SensorEvent
+{
+    Uint32 type;        /**< ::SDL_SENSORUPDATE */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Sint32 which;       /**< The instance ID of the sensor */
+    float data[6];      /**< Up to 6 values from the sensor - additional values can be queried using SDL_SensorGetData() */
+} SDL_SensorEvent;
+
 /**
  *  \brief The "quit requested" event
  */
@@ -526,6 +558,7 @@ typedef union SDL_Event
 {
     Uint32 type;                    /**< Event type, shared with all events */
     SDL_CommonEvent common;         /**< Common event data */
+    SDL_DisplayEvent display;       /**< Window event data */
     SDL_WindowEvent window;         /**< Window event data */
     SDL_KeyboardEvent key;          /**< Keyboard event data */
     SDL_TextEditingEvent edit;      /**< Text editing event data */
@@ -542,6 +575,7 @@ typedef union SDL_Event
     SDL_ControllerButtonEvent cbutton;  /**< Game Controller button event data */
     SDL_ControllerDeviceEvent cdevice;  /**< Game Controller device event data */
     SDL_AudioDeviceEvent adevice;   /**< Audio device event data */
+    SDL_SensorEvent sensor;         /**< Sensor event data */
     SDL_QuitEvent quit;             /**< Quit request event data */
     SDL_UserEvent user;             /**< Custom event data */
     SDL_SysWMEvent syswm;           /**< System dependent window event data */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_filesystem.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_filesystem.h
index a1c846ad..fa6a1fa6 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_filesystem.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_filesystem.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gamecontroller.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gamecontroller.h
index c9215132..6ae9c954 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gamecontroller.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gamecontroller.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -175,6 +175,14 @@ extern DECLSPEC SDL_bool SDLCALL SDL_IsGameController(int joystick_index);
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index);
 
+/**
+ *  Get the mapping of a game controller.
+ *  This can be called before any controllers are opened.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char *SDLCALL SDL_GameControllerMappingForDeviceIndex(int joystick_index);
+
 /**
  *  Open a game controller for use.
  *  The index passed as an argument refers to the N'th game controller on the system.
@@ -196,6 +204,13 @@ extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromInstanceID(SDL
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller);
 
+/**
+ *  Get the player index of an opened game controller, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller);
+
 /**
  *  Get the USB vendor ID of an opened controller, if available.
  *  If the vendor ID isn't available this function returns 0.
@@ -345,6 +360,19 @@ SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller,
 extern DECLSPEC Uint8 SDLCALL SDL_GameControllerGetButton(SDL_GameController *gamecontroller,
                                                           SDL_GameControllerButton button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param gamecontroller The controller to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a controller previously opened with SDL_GameControllerOpen().
  */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gesture.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gesture.h
index 2bba6a72..b223d80d 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gesture.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_gesture.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_haptic.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_haptic.h
index 60daefaa..2ea1bfc1 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_haptic.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_haptic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -117,6 +117,17 @@
 extern "C" {
 #endif /* __cplusplus */
 
+/* FIXME: For SDL 2.1, adjust all the magnitude variables to be Uint16 (0xFFFF).
+ *
+ * At the moment the magnitude variables are mixed between signed/unsigned, and
+ * it is also not made clear that ALL of those variables expect a max of 0x7FFF.
+ *
+ * Some platforms may have higher precision than that (Linux FF, Windows XInput)
+ * so we should fix the inconsistency in favor of higher possible precision,
+ * adjusting for platforms that use different scales.
+ * -flibit
+ */
+
 /**
  *  \typedef SDL_Haptic
  *
@@ -656,8 +667,8 @@ typedef struct SDL_HapticRamp
  * This struct is exclusively for the ::SDL_HAPTIC_LEFTRIGHT effect.
  *
  * The Left/Right effect is used to explicitly control the large and small
- * motors, commonly found in modern game controllers. One motor is high
- * frequency, the other is low frequency.
+ * motors, commonly found in modern game controllers. The small (right) motor
+ * is high frequency, and the large (left) motor is low frequency.
  *
  * \sa SDL_HAPTIC_LEFTRIGHT
  * \sa SDL_HapticEffect
@@ -668,7 +679,7 @@ typedef struct SDL_HapticLeftRight
     Uint16 type;            /**< ::SDL_HAPTIC_LEFTRIGHT */
 
     /* Replay */
-    Uint32 length;          /**< Duration of the effect. */
+    Uint32 length;          /**< Duration of the effect in milliseconds. */
 
     /* Rumble */
     Uint16 large_magnitude; /**< Control of the large controller motor. */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_hints.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_hints.h
index 007a4bee..4ee72e97 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_hints.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_hints.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,7 @@ extern "C" {
  *    "opengl"
  *    "opengles2"
  *    "opengles"
+ *    "metal"
  *    "software"
  *
  *  The default varies by platform, but it's the first one in the list that
@@ -210,6 +211,18 @@ extern "C" {
  */
 #define SDL_HINT_VIDEO_X11_NET_WM_PING      "SDL_VIDEO_X11_NET_WM_PING"
 
+/**
+ * \brief A variable controlling whether the X11 _NET_WM_BYPASS_COMPOSITOR hint should be used.
+ * 
+ * This variable can be set to the following values:
+ * "0" - Disable _NET_WM_BYPASS_COMPOSITOR
+ * "1" - Enable _NET_WM_BYPASS_COMPOSITOR
+ * 
+ * By default SDL will use _NET_WM_BYPASS_COMPOSITOR
+ * 
+ */
+#define SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR "SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR"
+
 /**
  *  \brief  A variable controlling whether the window frame and title bar are interactive when the cursor is hidden 
  *
@@ -249,6 +262,16 @@ extern "C" {
  */
 #define SDL_HINT_GRAB_KEYBOARD              "SDL_GRAB_KEYBOARD"
 
+/**
+ *  \brief  A variable setting the double click time, in milliseconds.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME    "SDL_MOUSE_DOUBLE_CLICK_TIME"
+
+/**
+ *  \brief  A variable setting the double click radius, in pixels.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS    "SDL_MOUSE_DOUBLE_CLICK_RADIUS"
+
 /**
  *  \brief  A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in relative mode
  */
@@ -316,7 +339,7 @@ extern "C" {
 #define SDL_HINT_IDLE_TIMER_DISABLED "SDL_IOS_IDLE_TIMER_DISABLED"
 
 /**
- *  \brief  A variable controlling which orientations are allowed on iOS.
+ *  \brief  A variable controlling which orientations are allowed on iOS/Android.
  *
  *  In some circumstances it is necessary to be able to explicitly control
  *  which UI orientations are allowed.
@@ -355,16 +378,36 @@ extern "C" {
 #define SDL_HINT_APPLE_TV_REMOTE_ALLOW_ROTATION "SDL_APPLE_TV_REMOTE_ALLOW_ROTATION"
 
 /**
- *  \brief  A variable controlling whether the Android / iOS built-in
- *  accelerometer should be listed as a joystick device, rather than listing
- *  actual joysticks only.
+ * \brief  A variable controlling whether the home indicator bar on iPhone X
+ *         should be hidden.
  *
  *  This variable can be set to the following values:
- *    "0"       - List only real joysticks and accept input from them
- *    "1"       - List real joysticks along with the accelerometer as if it were a 3 axis joystick (the default).
+ *    "0"       - The indicator bar is not hidden (default for windowed applications)
+ *    "1"       - The indicator bar is hidden and is shown when the screen is touched (useful for movie playback applications)
+ *    "2"       - The indicator bar is dim and the first swipe makes it visible and the second swipe performs the "home" action (default for fullscreen applications)
+ */
+#define SDL_HINT_IOS_HIDE_HOME_INDICATOR "SDL_IOS_HIDE_HOME_INDICATOR"
+
+/**
+ *  \brief  A variable controlling whether the Android / iOS built-in
+ *  accelerometer should be listed as a joystick device.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - The accelerometer is not listed as a joystick
+ *    "1"       - The accelerometer is available as a 3 axis joystick (the default).
  */
 #define SDL_HINT_ACCELEROMETER_AS_JOYSTICK "SDL_ACCELEROMETER_AS_JOYSTICK"
 
+/**
+ *  \brief  A variable controlling whether the Android / tvOS remotes
+ *  should be listed as joystick devices, instead of sending keyboard events.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - Remotes send enter/escape/arrow key events
+ *    "1"       - Remotes are available as 2 axis, 2 button joysticks (the default).
+ */
+#define SDL_HINT_TV_REMOTE_AS_JOYSTICK "SDL_TV_REMOTE_AS_JOYSTICK"
+
 /**
  *  \brief  A variable that lets you disable the detection and use of Xinput gamepad devices
  *
@@ -432,6 +475,88 @@ extern "C" {
  */
 #define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS"
 
+/**
+ *  \brief  A variable controlling whether the HIDAPI joystick drivers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI drivers are not used
+ *    "1"       - HIDAPI drivers are used (the default)
+ *
+ *  This variable is the default for all drivers, but can be overridden by the hints for specific drivers below.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI "SDL_JOYSTICK_HIDAPI"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for PS4 controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4 "SDL_JOYSTICK_HIDAPI_PS4"
+
+/**
+ *  \brief  A variable controlling whether extended input reports should be used for PS4 controllers when using the HIDAPI driver.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - extended reports are not enabled (the default)
+ *    "1"       - extended reports
+ *
+ *  Extended input reports allow rumble on Bluetooth PS4 controllers, but
+ *  break DirectInput handling for applications that don't use SDL.
+ *
+ *  Once extended reports are enabled, they can not be disabled without
+ *  power cycling the controller.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE "SDL_JOYSTICK_HIDAPI_PS4_RUMBLE"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Steam Controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Nintendo Switch controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH "SDL_JOYSTICK_HIDAPI_SWITCH"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for XBox controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_XBOX   "SDL_JOYSTICK_HIDAPI_XBOX"
+
+/**
+ *  \brief  A variable that controls whether Steam Controllers should be exposed using the SDL joystick and game controller APIs
+ *
+ *  The variable can be set to the following values:
+ *    "0"       - Do not scan for Steam Controllers
+ *    "1"       - Scan for Steam Controllers (the default)
+ *
+ *  The default value is "1".  This hint must be set before initializing the joystick subsystem.
+ */
+#define SDL_HINT_ENABLE_STEAM_CONTROLLERS "SDL_ENABLE_STEAM_CONTROLLERS"
+
+
 /**
  *  \brief If set to "0" then never set the top most bit on a SDL Window, even if the video mode expects it.
  *      This is a debugging aid for developers and not expected to be used by end users. The default is "1"
@@ -494,6 +619,10 @@ extern "C" {
 *  This is specially useful if you build SDL against a non glibc libc library (such as musl) which
 *  provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
 *  Support for this hint is currently available only in the pthread, Windows, and PSP backend.
+*
+*  Instead of this hint, in 2.0.9 and later, you can use
+*  SDL_CreateThreadWithStackSize(). This hint only works with the classic
+*  SDL_CreateThread().
 */
 #define SDL_HINT_THREAD_STACK_SIZE              "SDL_THREAD_STACK_SIZE"
 
@@ -719,6 +848,35 @@ extern "C" {
  */
 #define SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH "SDL_ANDROID_SEPARATE_MOUSE_AND_TOUCH"
 
+ /**
+ * \brief A variable to control whether we trap the Android back button to handle it manually.
+ *        This is necessary for the right mouse button to work on some Android devices, or
+ *        to be able to trap the back button for use in your code reliably.  If set to true,
+ *        the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of 
+ *        SDL_SCANCODE_AC_BACK.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - Back button will be handled as usual for system. (default)
+ *   "1"       - Back button will be trapped, allowing you to handle the key press
+ *               manually.  (This will also let right mouse click work on systems 
+ *               where the right mouse button functions as back.)
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON"
+
+ /**
+ * \brief A variable to control whether the return key on the soft keyboard
+ *        should hide the soft keyboard on Android and iOS.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - The return key will be handled as a key event. This is the behaviour of SDL <= 2.0.3. (default)
+ *   "1"       - The return key will hide the keyboard.
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_RETURN_KEY_HIDES_IME "SDL_RETURN_KEY_HIDES_IME"
+
 /**
  *  \brief override the binding element for keyboard inputs for Emscripten builds
  *
@@ -752,7 +910,7 @@ extern "C" {
  *   "0"       - SDL will generate a window-close event when it sees Alt+F4.
  *   "1"       - SDL will only do normal key handling for Alt+F4.
  */
-#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4	"SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
+#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4 "SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
 
 /**
  *  \brief Prevent SDL from using version 4 of the bitmap header when saving BMPs.
@@ -797,6 +955,24 @@ extern "C" {
  */
 #define SDL_HINT_RPI_VIDEO_LAYER           "SDL_RPI_VIDEO_LAYER"
 
+/**
+ * \brief Tell the video driver that we only want a double buffer.
+ *
+ * By default, most lowlevel 2D APIs will use a triple buffer scheme that 
+ * wastes no CPU time on waiting for vsync after issuing a flip, but
+ * introduces a frame of latency. On the other hand, using a double buffer
+ * scheme instead is recommended for cases where low latency is an important
+ * factor because we save a whole frame of latency.
+ * We do so by waiting for vsync immediately after issuing a flip, usually just
+ * after eglSwapBuffers call in the backend's *_SwapWindow function.
+ *
+ * Since it's driver-specific, it's only supported where possible and
+ * implemented. Currently supported the following drivers:
+ * - KMSDRM (kmsdrm)
+ * - Raspberry Pi (raspberrypi)
+ */
+#define SDL_HINT_VIDEO_DOUBLE_BUFFER      "SDL_VIDEO_DOUBLE_BUFFER"
+
 /**
  *  \brief  A variable controlling what driver to use for OpenGL ES contexts.
  *
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_joystick.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_joystick.h
index f598dc82..6e05a9c2 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_joystick.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_joystick.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,10 +97,10 @@ typedef enum
 typedef enum
 {
     SDL_JOYSTICK_POWER_UNKNOWN = -1,
-    SDL_JOYSTICK_POWER_EMPTY,
-    SDL_JOYSTICK_POWER_LOW,
-    SDL_JOYSTICK_POWER_MEDIUM,
-    SDL_JOYSTICK_POWER_FULL,
+    SDL_JOYSTICK_POWER_EMPTY,   /* <= 5% */
+    SDL_JOYSTICK_POWER_LOW,     /* <= 20% */
+    SDL_JOYSTICK_POWER_MEDIUM,  /* <= 70% */
+    SDL_JOYSTICK_POWER_FULL,    /* <= 100% */
     SDL_JOYSTICK_POWER_WIRED,
     SDL_JOYSTICK_POWER_MAX
 } SDL_JoystickPowerLevel;
@@ -132,6 +132,12 @@ extern DECLSPEC int SDLCALL SDL_NumJoysticks(void);
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickNameForIndex(int device_index);
 
+/**
+ *  Get the player index of a joystick, or -1 if it's not available
+ *  This can be called before any joysticks are opened.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetDevicePlayerIndex(int device_index);
+
 /**
  *  Return the GUID for the joystick at this index
  *  This can be called before any joysticks are opened.
@@ -194,6 +200,13 @@ extern DECLSPEC SDL_Joystick *SDLCALL SDL_JoystickFromInstanceID(SDL_JoystickID
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickName(SDL_Joystick * joystick);
 
+/**
+ *  Get the player index of an opened joystick, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetPlayerIndex(SDL_Joystick * joystick);
+
 /**
  *  Return the GUID for this opened joystick
  */
@@ -361,6 +374,19 @@ extern DECLSPEC int SDLCALL SDL_JoystickGetBall(SDL_Joystick * joystick,
 extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetButton(SDL_Joystick * joystick,
                                                     int button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param joystick The joystick to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a joystick previously opened with SDL_JoystickOpen().
  */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keyboard.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keyboard.h
index e78ca469..87482317 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keyboard.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keyboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keycode.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keycode.h
index c41e45ff..d7d5b1db 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keycode.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_keycode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_loadso.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_loadso.h
index 6ea256c6..da56fb45 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_loadso.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_loadso.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_log.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_log.h
index 356d0e1c..e12b6588 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_log.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_main.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_main.h
index 2af32360..98558217 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_main.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_main.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -63,10 +63,13 @@
 /* On Android SDL provides a Java class in SDLActivity.java that is the
    main activity entry point.
 
-   See README-android.md for more details on extending that class.
+   See docs/README-android.md for more details on extending that class.
  */
 #define SDL_MAIN_NEEDED
 
+/* We need to export SDL_main so it can be launched from Java */
+#define SDLMAIN_DECLSPEC    DECLSPEC
+
 #elif defined(__NACL__)
 /* On NACL we use ppapi_simple to set up the application helper code,
    then wait for the first PSE_INSTANCE_DIDCHANGEVIEW event before 
@@ -85,6 +88,10 @@
 #define C_LINKAGE
 #endif /* __cplusplus */
 
+#ifndef SDLMAIN_DECLSPEC
+#define SDLMAIN_DECLSPEC
+#endif
+
 /**
  *  \file SDL_main.h
  *
@@ -107,7 +114,7 @@
 /**
  *  The prototype for the application's main() function
  */
-extern C_LINKAGE DECLSPEC int SDL_main(int argc, char *argv[]);
+extern C_LINKAGE SDLMAIN_DECLSPEC int SDL_main(int argc, char *argv[]);
 
 
 #include "begin_code.h"
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_messagebox.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_messagebox.h
index c326d8f0..b7be59d8 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_messagebox.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_messagebox.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mouse.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mouse.h
index 6001bd46..d3c9f615 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mouse.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mouse.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mutex.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mutex.h
index 0272379e..ba4247ce 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mutex.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_mutex.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_name.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_name.h
index 8095ed3f..ecd863f4 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_name.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_name.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengl.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengl.h
index 314dd57e..253d9c93 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengl.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles.h
index 800c5930..18dd984b 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles2.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles2.h
index 102f2f3f..6ccecf21 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles2.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_opengles2.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_pixels.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_pixels.h
index 04246689..0b4364b1 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_pixels.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_pixels.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -287,7 +287,9 @@ enum
     SDL_PIXELFORMAT_NV12 =      /**< Planar mode: Y + U/V interleaved  (2 planes) */
         SDL_DEFINE_PIXELFOURCC('N', 'V', '1', '2'),
     SDL_PIXELFORMAT_NV21 =      /**< Planar mode: Y + V/U interleaved  (2 planes) */
-        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1')
+        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1'),
+    SDL_PIXELFORMAT_EXTERNAL_OES =      /**< Android video texture format */
+        SDL_DEFINE_PIXELFOURCC('O', 'E', 'S', ' ')
 };
 
 typedef struct SDL_Color
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_platform.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_platform.h
index 9dde385f..7dea4ce9 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_platform.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_platform.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -121,7 +121,12 @@
 #if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
 /* Try to find out if we're compiling for WinRT or non-WinRT */
 #if defined(_MSC_VER) && defined(__has_include)
-#define HAVE_WINAPIFAMILY_H __has_include(<winapifamily.h>)
+#if __has_include(<winapifamily.h>)
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
 /* If _USING_V110_SDK71_ is defined it means we are using the Windows XP toolset. */
 #elif defined(_MSC_VER) && (_MSC_VER >= 1700 && !_USING_V110_SDK71_)    /* _MSC_VER == 1700 for Visual Studio 2012 */
 #define HAVE_WINAPIFAMILY_H 1
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_power.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_power.h
index d48e8a37..a4fe8a93 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_power.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_power.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_quit.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_quit.h
index 9283c381..fea56a8d 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_quit.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_quit.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rect.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rect.h
index c4f6d74b..543bb618 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rect.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rect.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_render.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_render.h
index ea6ef9ff..d3361929 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_render.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_render.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -898,6 +898,27 @@ extern DECLSPEC int SDLCALL SDL_GL_BindTexture(SDL_Texture *texture, float *texw
  */
 extern DECLSPEC int SDLCALL SDL_GL_UnbindTexture(SDL_Texture *texture);
 
+/**
+ *  \brief Get the CAMetalLayer associated with the given Metal renderer
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return CAMetalLayer* on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalCommandEncoder()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalLayer(SDL_Renderer * renderer);
+
+/**
+ *  \brief Get the Metal command encoder for the current frame
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return id<MTLRenderCommandEncoder> on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalLayer()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalCommandEncoder(SDL_Renderer * renderer);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_revision.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_revision.h
index 9376093e..92fbe67b 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_revision.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_revision.h
@@ -1,2 +1,2 @@
-#define SDL_REVISION "hg-11645:2088cd828335"
-#define SDL_REVISION_NUMBER 11645
+#define SDL_REVISION "hg-12373:8feb5da6f2fb"
+#define SDL_REVISION_NUMBER 12373
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rwops.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rwops.h
index 7f0cbdfd..0960699d 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rwops.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_rwops.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_scancode.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_scancode.h
index 1d552120..63871aa3 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_scancode.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_scancode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_sensor.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_sensor.h
new file mode 100644
index 00000000..ac163a8c
--- /dev/null
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_sensor.h
@@ -0,0 +1,251 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  \file SDL_sensor.h
+ *
+ *  Include file for SDL sensor event handling
+ *
+ */
+
+#ifndef _SDL_sensor_h
+#define _SDL_sensor_h
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+/**
+ *  \brief SDL_sensor.h
+ *
+ *  In order to use these functions, SDL_Init() must have been called
+ *  with the ::SDL_INIT_SENSOR flag.  This causes SDL to scan the system
+ *  for sensors, and load appropriate drivers.
+ */
+
+struct _SDL_Sensor;
+typedef struct _SDL_Sensor SDL_Sensor;
+
+/**
+ * This is a unique ID for a sensor for the time it is connected to the system,
+ * and is never reused for the lifetime of the application.
+ *
+ * The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
+ */
+typedef Sint32 SDL_SensorID;
+
+/* The different sensors defined by SDL
+ *
+ * Additional sensors may be available, using platform dependent semantics.
+ *
+ * Hare are the additional Android sensors:
+ * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
+ */
+typedef enum
+{
+    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
+    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
+    SDL_SENSOR_ACCEL,           /**< Accelerometer */
+    SDL_SENSOR_GYRO             /**< Gyroscope */
+} SDL_SensorType;
+
+/**
+ * Accelerometer sensor
+ *
+ * The accelerometer returns the current acceleration in SI meters per
+ * second squared. This includes gravity, so a device at rest will have
+ * an acceleration of SDL_STANDARD_GRAVITY straight down.
+ *
+ * values[0]: Acceleration on the x axis
+ * values[1]: Acceleration on the y axis
+ * values[2]: Acceleration on the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+#define SDL_STANDARD_GRAVITY    9.80665f
+
+/**
+ * Gyroscope sensor
+ *
+ * The gyroscope returns the current rate of rotation in radians per second.
+ * The rotation is positive in the counter-clockwise direction. That is,
+ * an observer looking from a positive location on one of the axes would
+ * see positive rotation on that axis when it appeared to be rotating
+ * counter-clockwise.
+ *
+ * values[0]: Angular speed around the x axis
+ * values[1]: Angular speed around the y axis
+ * values[2]: Angular speed around the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+
+/* Function prototypes */
+
+/**
+ *  \brief Count the number of sensors attached to the system right now
+ */
+extern DECLSPEC int SDLCALL SDL_NumSensors(void);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ * 
+ *  \return The sensor name, or NULL if device_index is out of range.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if device_index is out of range.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index);
+
+/**
+ *  \brief Open a sensor for use.
+ *
+ *  The index passed as an argument refers to the N'th sensor on the system.
+ *
+ *  \return A sensor identifier, or NULL if an error occurred.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index);
+
+/**
+ * Return the SDL_Sensor associated with an instance id.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  \return The sensor name, or NULL if the sensor is NULL.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor);
+
+/**
+ *  Get the current state of an opened sensor.
+ *
+ *  The number of values and interpretation of the data is sensor dependent.
+ *
+ *  \param sensor The sensor to query
+ *  \param data A pointer filled with the current sensor state
+ *  \param num_values The number of values to write to data
+ *
+ *  \return 0 or -1 if an error occurred.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor * sensor, float *data, int num_values);
+
+/**
+ *  Close a sensor previously opened with SDL_SensorOpen()
+ */
+extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor * sensor);
+
+/**
+ *  Update the current state of the open sensors.
+ *
+ *  This is called automatically by the event loop if sensor events are enabled.
+ *
+ *  This needs to be called from the thread that initialized the sensor subsystem.
+ */
+extern DECLSPEC void SDLCALL SDL_SensorUpdate(void);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_sensor_h */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_shape.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_shape.h
index 9e492d93..40a6baaa 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_shape.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_shape.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_stdinc.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_stdinc.h
index 72402299..e373bc38 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_stdinc.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_stdinc.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -86,6 +86,28 @@
 #ifdef HAVE_FLOAT_H
 # include <float.h>
 #endif
+#if defined(HAVE_ALLOCA) && !defined(alloca)
+# if defined(HAVE_ALLOCA_H)
+#  include <alloca.h>
+# elif defined(__GNUC__)
+#  define alloca __builtin_alloca
+# elif defined(_MSC_VER)
+#  include <malloc.h>
+#  define alloca _alloca
+# elif defined(__WATCOMC__)
+#  include <malloc.h>
+# elif defined(__BORLANDC__)
+#  include <malloc.h>
+# elif defined(__DMC__)
+#  include <stdlib.h>
+# elif defined(__AIX__)
+#pragma alloca
+# elif defined(__MRC__)
+void *alloca(unsigned);
+# else
+char *alloca();
+# endif
+#endif
 
 /**
  *  The number of elements in an array.
@@ -328,28 +350,6 @@ SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
 extern "C" {
 #endif
 
-#if defined(HAVE_ALLOCA) && !defined(alloca)
-# if defined(HAVE_ALLOCA_H)
-#  include <alloca.h>
-# elif defined(__GNUC__)
-#  define alloca __builtin_alloca
-# elif defined(_MSC_VER)
-#  include <malloc.h>
-#  define alloca _alloca
-# elif defined(__WATCOMC__)
-#  include <malloc.h>
-# elif defined(__BORLANDC__)
-#  include <malloc.h>
-# elif defined(__DMC__)
-#  include <stdlib.h>
-# elif defined(__AIX__)
-#pragma alloca
-# elif defined(__MRC__)
-void *alloca(unsigned);
-# else
-char *alloca();
-# endif
-#endif
 #ifdef HAVE_ALLOCA
 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
 #define SDL_stack_free(data)
@@ -445,12 +445,12 @@ SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
 #endif
 }
 
-
 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 
 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
 
+extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
@@ -501,18 +501,35 @@ extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size
 #endif
 
 extern DECLSPEC double SDLCALL SDL_acos(double x);
+extern DECLSPEC float SDLCALL SDL_acosf(float x);
 extern DECLSPEC double SDLCALL SDL_asin(double x);
+extern DECLSPEC float SDLCALL SDL_asinf(float x);
 extern DECLSPEC double SDLCALL SDL_atan(double x);
+extern DECLSPEC float SDLCALL SDL_atanf(float x);
 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
+extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
 extern DECLSPEC double SDLCALL SDL_ceil(double x);
+extern DECLSPEC float SDLCALL SDL_ceilf(float x);
 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
+extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_cos(double x);
 extern DECLSPEC float SDLCALL SDL_cosf(float x);
+extern DECLSPEC double SDLCALL SDL_exp(double x);
+extern DECLSPEC float SDLCALL SDL_expf(float x);
 extern DECLSPEC double SDLCALL SDL_fabs(double x);
+extern DECLSPEC float SDLCALL SDL_fabsf(float x);
 extern DECLSPEC double SDLCALL SDL_floor(double x);
+extern DECLSPEC float SDLCALL SDL_floorf(float x);
+extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
+extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_log(double x);
+extern DECLSPEC float SDLCALL SDL_logf(float x);
+extern DECLSPEC double SDLCALL SDL_log10(double x);
+extern DECLSPEC float SDLCALL SDL_log10f(float x);
 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
+extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
+extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
 extern DECLSPEC double SDLCALL SDL_sin(double x);
 extern DECLSPEC float SDLCALL SDL_sinf(float x);
 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_surface.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_surface.h
index 510690c9..730d49fc 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_surface.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_surface.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,6 +97,17 @@ typedef struct SDL_Surface
 typedef int (SDLCALL *SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
                                  struct SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ * \brief The formula used for converting between YUV and RGB
+ */
+typedef enum
+{
+    SDL_YUV_CONVERSION_JPEG,        /**< Full range JPEG */
+    SDL_YUV_CONVERSION_BT601,       /**< BT.601 (the default) */
+    SDL_YUV_CONVERSION_BT709,       /**< BT.709 */
+    SDL_YUV_CONVERSION_AUTOMATIC    /**< BT.601 for SD content, BT.709 for HD content */
+} SDL_YUV_CONVERSION_MODE;
+
 /**
  *  Allocate and free an RGB surface.
  *
@@ -237,6 +248,13 @@ extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
                                             int flag, Uint32 key);
 
+/**
+ *  \brief Returns whether the surface has a color key
+ *
+ *  \return SDL_TRUE if the surface has a color key, or SDL_FALSE if the surface is NULL or has no color key
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasColorKey(SDL_Surface * surface);
+
 /**
  *  \brief Gets the color key (transparent pixel) in a blittable surface.
  *
@@ -509,6 +527,20 @@ extern DECLSPEC int SDLCALL SDL_LowerBlitScaled
     (SDL_Surface * src, SDL_Rect * srcrect,
     SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ *  \brief Set the YUV conversion mode
+ */
+extern DECLSPEC void SDLCALL SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_MODE mode);
+
+/**
+ *  \brief Get the YUV conversion mode
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionMode(void);
+
+/**
+ *  \brief Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionModeForResolution(int width, int height);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_system.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_system.h
index eb069b33..4dc372d6 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_system.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_system.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,18 @@ extern DECLSPEC SDL_bool SDLCALL SDL_DXGIGetOutputInfo( int displayIndex, int *a
 #endif /* __WIN32__ */
 
 
+/* Platform specific functions for Linux */
+#ifdef __LINUX__
+
+/**
+   \brief Sets the UNIX nice value for a thread, using setpriority() if possible, and RealtimeKit if available.
+
+   \return 0 on success, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int priority);
+ 
+#endif /* __LINUX__ */
+	
 /* Platform specific functions for iOS */
 #if defined(__IPHONEOS__) && __IPHONEOS__
 
@@ -108,6 +120,26 @@ extern DECLSPEC void * SDLCALL SDL_AndroidGetJNIEnv(void);
  */
 extern DECLSPEC void * SDLCALL SDL_AndroidGetActivity(void);
 
+/**
+   \brief Return true if the application is running on Android TV
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsAndroidTV(void);
+
+/**
+   \brief Return true if the application is running on a Chromebook
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsChromebook(void);
+
+/**
+  \brief Return true is the application is running on a Samsung DeX docking station
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsDeXMode(void);
+
+/**
+ \brief Trigger the Android system back button behavior.
+ */
+extern DECLSPEC void SDLCALL SDL_AndroidBackButton(void);
+
 /**
    See the official Android developer guide for more information:
    http://developer.android.com/guide/topics/data/data-storage.html
@@ -169,6 +201,25 @@ typedef enum
 } SDL_WinRT_Path;
 
 
+/**
+ *  \brief WinRT Device Family
+ */
+typedef enum
+{
+    /** \brief Unknown family  */
+    SDL_WINRT_DEVICEFAMILY_UNKNOWN,
+
+    /** \brief Desktop family*/
+    SDL_WINRT_DEVICEFAMILY_DESKTOP,
+
+    /** \brief Mobile family (for example smartphone) */
+    SDL_WINRT_DEVICEFAMILY_MOBILE,
+
+    /** \brief XBox family */
+    SDL_WINRT_DEVICEFAMILY_XBOX,
+} SDL_WinRT_DeviceFamily;
+
+
 /**
  *  \brief Retrieves a WinRT defined path on the local file system
  *
@@ -203,8 +254,20 @@ extern DECLSPEC const wchar_t * SDLCALL SDL_WinRTGetFSPathUNICODE(SDL_WinRT_Path
  */
 extern DECLSPEC const char * SDLCALL SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathType);
 
+/**
+ *  \brief Detects the device family of WinRT plattform on runtime
+ *
+ *  \return Device family
+ */
+extern DECLSPEC SDL_WinRT_DeviceFamily SDLCALL SDL_WinRTGetDeviceFamily();
+
 #endif /* __WINRT__ */
 
+/**
+ \brief Return true if the current device is a tablet.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsTablet(void);
+
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_syswm.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_syswm.h
index 2d18afb6..f1c4021c 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_syswm.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_syswm.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -33,12 +33,6 @@
 #include "SDL_video.h"
 #include "SDL_version.h"
 
-#include "begin_code.h"
-/* Set up for C function definitions, even when using C++ */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /**
  *  \file SDL_syswm.h
  *
@@ -110,6 +104,12 @@ typedef void *EGLSurface;
 #include "SDL_egl.h"
 #endif
 
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  *  These are the various supported windowing subsystems
  */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test.h
index f55afcb0..6cc373bf 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_assert.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_assert.h
index 11d83639..1788d7a2 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_assert.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_common.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_common.h
index 24eeb32a..be2e6b2a 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_common.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_common.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_compare.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_compare.h
index 9f4c4587..c22e447d 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_compare.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_compare.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_crc32.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_crc32.h
index add480c3..3d235d07 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_crc32.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_crc32.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_font.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_font.h
index 58c9f9d5..59cbdcad 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_font.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_font.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_fuzzer.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
index 6cf05747..8fcb9ebb 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_harness.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_harness.h
index 68c4bcb7..8641e0a7 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_harness.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_harness.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_images.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_images.h
index 683d2f8a..9c4dd5b8 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_images.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_images.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_log.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_log.h
index 9f993fbb..ebd44fb5 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_log.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_md5.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_md5.h
index 67ca7d1d..0e410576 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_md5.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_md5.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_memory.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_memory.h
index 43b67f52..4827ae6f 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_memory.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_memory.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_random.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_random.h
index 2b01922c..0eb414ff 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_random.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_test_random.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_thread.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_thread.h
index d0f6575c..554dd0b6 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_thread.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_thread.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -54,12 +54,13 @@ typedef unsigned int SDL_TLSID;
 /**
  *  The SDL thread priority.
  *
- *  \note On many systems you require special privileges to set high priority.
+ *  \note On many systems you require special privileges to set high or time critical priority.
  */
 typedef enum {
     SDL_THREAD_PRIORITY_LOW,
     SDL_THREAD_PRIORITY_NORMAL,
-    SDL_THREAD_PRIORITY_HIGH
+    SDL_THREAD_PRIORITY_HIGH,
+    SDL_THREAD_PRIORITY_TIME_CRITICAL
 } SDL_ThreadPriority;
 
 /**
@@ -105,14 +106,24 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
 
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
+                 const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
+
+
 /**
  *  Create a thread.
  */
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #endif
 
 #elif defined(__OS2__)
@@ -132,15 +143,31 @@ extern DECLSPEC SDL_Thread *SDLCALL
 SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #endif
 
 #else
 
+/**
+ *  Create a thread with a default stack size.
+ *
+ *  This is equivalent to calling:
+ *  SDL_CreateThreadWithStackSize(fn, name, 0, data);
+ */
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+
 /**
  *  Create a thread.
  *
@@ -158,9 +185,17 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
  *   If a system imposes requirements, SDL will try to munge the string for
  *    it (truncate, etc), but the original string contents will be available
  *    from SDL_GetThreadName().
+ *
+ *   The size (in bytes) of the new stack can be specified. Zero means "use
+ *    the system default" which might be wildly different between platforms
+ *    (x86 Linux generally defaults to eight megabytes, an embedded device
+ *    might be a few kilobytes instead).
+ *
+ *   In SDL 2.1, stacksize will be folded into the original SDL_CreateThread
+ *    function.
  */
 extern DECLSPEC SDL_Thread *SDLCALL
-SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
 
 #endif
 
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_timer.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_timer.h
index 282625d3..5600618f 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_timer.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_timer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_touch.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_touch.h
index db9e25eb..f4075e79 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_touch.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_touch.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_types.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_types.h
index 06ee80cb..4ac248c8 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_types.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_types.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_version.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_version.h
index 5b4c4024..31443e14 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_version.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_version.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -59,7 +59,7 @@ typedef struct SDL_version
 */
 #define SDL_MAJOR_VERSION   2
 #define SDL_MINOR_VERSION   0
-#define SDL_PATCHLEVEL      7
+#define SDL_PATCHLEVEL      9
 
 /**
  *  \brief Macro to determine SDL version program was compiled against.
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_video.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_video.h
index 6f6cda8b..461f1380 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_video.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_video.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -110,7 +110,9 @@ typedef enum
     SDL_WINDOW_MOUSE_FOCUS = 0x00000400,        /**< window has mouse focus */
     SDL_WINDOW_FULLSCREEN_DESKTOP = ( SDL_WINDOW_FULLSCREEN | 0x00001000 ),
     SDL_WINDOW_FOREIGN = 0x00000800,            /**< window not created by SDL */
-    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported */
+    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported.
+                                                     On macOS NSHighResolutionCapable must be set true in the
+                                                     application's Info.plist for this to have any effect. */
     SDL_WINDOW_MOUSE_CAPTURE = 0x00004000,      /**< window has mouse captured (unrelated to INPUT_GRABBED) */
     SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000,      /**< window should always be above others */
     SDL_WINDOW_SKIP_TASKBAR  = 0x00010000,      /**< window should not be added to the taskbar */
@@ -167,6 +169,24 @@ typedef enum
     SDL_WINDOWEVENT_HIT_TEST        /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL. */
 } SDL_WindowEventID;
 
+/**
+ *  \brief Event subtype for display events
+ */
+typedef enum
+{
+    SDL_DISPLAYEVENT_NONE,          /**< Never used */
+    SDL_DISPLAYEVENT_ORIENTATION    /**< Display orientation has changed to data1 */
+} SDL_DisplayEventID;
+
+typedef enum
+{
+    SDL_ORIENTATION_UNKNOWN,            /**< The display orientation can't be determined */
+    SDL_ORIENTATION_LANDSCAPE,          /**< The display is in landscape mode, with the right side up, relative to portrait mode */
+    SDL_ORIENTATION_LANDSCAPE_FLIPPED,  /**< The display is in landscape mode, with the left side up, relative to portrait mode */
+    SDL_ORIENTATION_PORTRAIT,           /**< The display is in portrait mode */
+    SDL_ORIENTATION_PORTRAIT_FLIPPED    /**< The display is in portrait mode, upside down */
+} SDL_DisplayOrientation;
+
 /**
  *  \brief An opaque handle to an OpenGL context.
  */
@@ -314,18 +334,6 @@ extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex);
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect);
 
-/**
- *  \brief Get the dots/pixels-per-inch for a display
- *
- *  \note Diagonal, horizontal and vertical DPI can all be optionally
- *        returned if the parameter is non-NULL.
- *
- *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
- *
- *  \sa SDL_GetNumVideoDisplays()
- */
-extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
-
 /**
  *  \brief Get the usable desktop area represented by a display, with the
  *         primary display located at 0,0
@@ -345,6 +353,27 @@ extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, fl
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect);
 
+/**
+ *  \brief Get the dots/pixels-per-inch for a display
+ *
+ *  \note Diagonal, horizontal and vertical DPI can all be optionally
+ *        returned if the parameter is non-NULL.
+ *
+ *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
+
+/**
+ *  \brief Get the orientation of a display
+ *
+ *  \return The orientation of the display, or SDL_ORIENTATION_UNKNOWN if it isn't available.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC SDL_DisplayOrientation SDLCALL SDL_GetDisplayOrientation(int displayIndex);
+
 /**
  *  \brief Returns the number of available display modes.
  *
@@ -470,7 +499,7 @@ extern DECLSPEC Uint32 SDLCALL SDL_GetWindowPixelFormat(SDL_Window * window);
  *  If the window is created with any of the SDL_WINDOW_OPENGL or
  *  SDL_WINDOW_VULKAN flags, then the corresponding LoadLibrary function
  *  (SDL_GL_LoadLibrary or SDL_Vulkan_LoadLibrary) is called and the
- *  corrensponding UnloadLibrary function is called by SDL_DestroyWindow().
+ *  corresponding UnloadLibrary function is called by SDL_DestroyWindow().
  *
  *  If SDL_WINDOW_VULKAN is specified and there isn't a working Vulkan driver,
  *  SDL_CreateWindow() will fail because SDL_Vulkan_LoadLibrary() will fail.
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_vulkan.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_vulkan.h
index 803b5fee..972cca4d 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_vulkan.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_vulkan.h
@@ -69,30 +69,43 @@ typedef VkSurfaceKHR SDL_vulkanSurface; /* for compatibility with Tizen */
  *  \brief Dynamically load a Vulkan loader library.
  *
  *  \param [in] path The platform dependent Vulkan loader library name, or
- *              \c NULL to open the default Vulkan loader library.
+ *              \c NULL.
  *
  *  \return \c 0 on success, or \c -1 if the library couldn't be loaded.
  *
- *  This should be done after initializing the video driver, but before
+ *  If \a path is NULL SDL will use the value of the environment variable
+ *  \c SDL_VULKAN_LIBRARY, if set, otherwise it loads the default Vulkan
+ *  loader library.
+ *
+ *  This should be called after initializing the video driver, but before
  *  creating any Vulkan windows. If no Vulkan loader library is loaded, the
  *  default library will be loaded upon creation of the first Vulkan window.
  *
- *  \note If you specify a non-NULL \a path, you should retrieve all of the
- *        Vulkan functions used in your program from the dynamic library using
+ *  \note It is fairly common for Vulkan applications to link with \a libvulkan
+ *        instead of explicitly loading it at run time. This will work with
+ *        SDL provided the application links to a dynamic library and both it
+ *        and SDL use the same search path.
+ *
+ *  \note If you specify a non-NULL \c path, an application should retrieve all
+ *        of the Vulkan functions it uses from the dynamic library using
  *        \c SDL_Vulkan_GetVkGetInstanceProcAddr() unless you can guarantee
- *        \a path points to the same vulkan loader library that you linked to.
+ *        \c path points to the same vulkan loader library the application
+ *        linked to.
  *
  *  \note On Apple devices, if \a path is NULL, SDL will attempt to find
  *        the vkGetInstanceProcAddr address within all the mach-o images of
- *        the current process. This is because the currently (v0.17.0)
- *        recommended MoltenVK (Vulkan on Metal) usage is as a static library.
- *        If it is not found then SDL will attempt to load \c libMoltenVK.dylib.
- *        Applications using the dylib alternative therefore do not need to do
- *        anything special when calling SDL.
+ *        the current process. This is because it is fairly common for Vulkan
+ *        applications to link with libvulkan (and historically MoltenVK was
+ *        provided as a static library). If it is not found then, on macOS, SDL
+ *        will attempt to load \c vulkan.framework/vulkan, \c libvulkan.1.dylib,
+ *        \c MoltenVK.framework/MoltenVK and \c libMoltenVK.dylib in that order.
+ *        On iOS SDL will attempt to load \c libMoltenVK.dylib. Applications
+ *        using a dynamic framework or .dylib must ensure it is included in its
+ *        application bundle.
  *
- *  \note On non-Apple devices, SDL requires you to either not link to the
- *        Vulkan loader or link to a dynamic library version. This limitation
- *        may be removed in a future version of SDL.
+ *  \note On non-Apple devices, application linking with a static libvulkan is
+ *        not supported. Either do not link to the Vulkan loader or link to a
+ *        dynamic library version.
  *
  *  \note This function will fail if there are no working Vulkan drivers
  *        installed.
@@ -122,11 +135,11 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \brief Get the names of the Vulkan instance extensions needed to create
  *         a surface with \c SDL_Vulkan_CreateSurface().
  *
- *  \param [in]     window Window for which the required Vulkan instance
+ *  \param [in]     \c NULL or window Window for which the required Vulkan instance
  *                  extensions should be retrieved
- *  \param [in,out] count pointer to an \c unsigned related to the number of
+ *  \param [in,out] pCount pointer to an \c unsigned related to the number of
  *                  required Vulkan instance extensions
- *  \param [out]    names \c NULL or a pointer to an array to be filled with the
+ *  \param [out]    pNames \c NULL or a pointer to an array to be filled with the
  *                  required Vulkan instance extensions
  *
  *  \return \c SDL_TRUE on success, \c SDL_FALSE on error.
@@ -140,6 +153,10 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  is smaller than the number of required extensions, \c SDL_FALSE will be
  *  returned instead of \c SDL_TRUE, to indicate that not all the required
  *  extensions were returned.
+ * 
+ *  \note If \c window is not NULL, it will be checked against its creation
+ *        flags to ensure that the Vulkan flag is present. This parameter
+ *        will be removed in a future major release.
  *
  *  \note The returned list of extensions will contain \c VK_KHR_surface
  *        and zero or more platform specific extensions
@@ -147,12 +164,13 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \note The extension names queried here must be enabled when calling
  *        VkCreateInstance, otherwise surface creation will fail.
  *
- *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag.
+ *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag
+ *        or be \c NULL
  *
  *  \code
  *  unsigned int count;
  *  // get count of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, NULL))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, NULL))
  *      handle_error();
  *
  *  static const char *const additionalExtensions[] =
@@ -166,7 +184,7 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *      handle_error();
  *
  *  // get names of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, names))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, names))
  *      handle_error();
  *
  *  // copy additional extensions after required extensions
@@ -240,6 +258,9 @@ extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_CreateSurface(
  * platform with high-DPI support (Apple calls this "Retina"), and not disabled
  * by the \c SDL_HINT_VIDEO_HIGHDPI_DISABLED hint.
  *
+ *  \note On macOS high-DPI support must be enabled for an application by
+ *        setting NSHighResolutionCapable to true in its Info.plist.
+ *
  *  \sa SDL_GetWindowSize()
  *  \sa SDL_CreateWindow()
  */
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/begin_code.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/begin_code.h
index 5372d6f0..6c210624 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/begin_code.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/begin_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/include/SDL2/close_code.h b/libs/SDL2/i686-w64-mingw32/include/SDL2/close_code.h
index 2a352dbb..b3b70a4c 100644
--- a/libs/SDL2/i686-w64-mingw32/include/SDL2/close_code.h
+++ b/libs/SDL2/i686-w64-mingw32/include/SDL2/close_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/i686-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake b/libs/SDL2/i686-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
index 208b7c63..ee347fcb 100644
--- a/libs/SDL2/i686-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
+++ b/libs/SDL2/i686-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
@@ -1,11 +1,11 @@
 # sdl2 cmake project-config input for ./configure scripts
 
-set(prefix "/usr/local/i686-w64-mingw32") 
+set(prefix "/opt/local/i686-w64-mingw32") 
 set(exec_prefix "${prefix}")
 set(libdir "${exec_prefix}/lib")
-set(SDL2_PREFIX "/usr/local/i686-w64-mingw32")
-set(SDL2_EXEC_PREFIX "/usr/local/i686-w64-mingw32")
+set(SDL2_PREFIX "/opt/local/i686-w64-mingw32")
+set(SDL2_EXEC_PREFIX "/opt/local/i686-w64-mingw32")
 set(SDL2_LIBDIR "${exec_prefix}/lib")
 set(SDL2_INCLUDE_DIRS "${prefix}/include/SDL2")
-set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lmingw32 -lSDL2main -lSDL2  -mwindows")
+set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lmingw32 -lSDL2main -lSDL2 -mwindows")
 string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2.a b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.a
index 771ee00b..05489a95 100644
Binary files a/libs/SDL2/i686-w64-mingw32/lib/libSDL2.a and b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.a differ
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2.dll.a b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.dll.a
index 59d48073..b20371a1 100755
Binary files a/libs/SDL2/i686-w64-mingw32/lib/libSDL2.dll.a and b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.dll.a differ
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2.la b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.la
new file mode 100644
index 00000000..3848c7db
--- /dev/null
+++ b/libs/SDL2/i686-w64-mingw32/lib/libSDL2.la
@@ -0,0 +1,41 @@
+# libSDL2.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='../bin/SDL2.dll'
+
+# Names of this library.
+library_names='libSDL2.dll.a'
+
+# The name of the static archive.
+old_library='libSDL2.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2.
+current=9
+age=9
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/i686-w64-mingw32/lib'
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.a b/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.a
index 5f2cfa28..190f9e07 100644
Binary files a/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.a and b/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.a differ
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.la b/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.la
new file mode 100644
index 00000000..5f96235b
--- /dev/null
+++ b/libs/SDL2/i686-w64-mingw32/lib/libSDL2_test.la
@@ -0,0 +1,41 @@
+# libSDL2_test.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libSDL2_test.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=''
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2_test.
+current=0
+age=0
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/i686-w64-mingw32/lib'
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.a b/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.a
index 9dddabbf..df7c95b9 100644
Binary files a/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.a and b/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.a differ
diff --git a/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.la b/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.la
new file mode 100644
index 00000000..d01b8a17
--- /dev/null
+++ b/libs/SDL2/i686-w64-mingw32/lib/libSDL2main.la
@@ -0,0 +1,41 @@
+# libSDL2main.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libSDL2main.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=''
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2main.
+current=0
+age=0
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/i686-w64-mingw32/lib'
diff --git a/libs/SDL2/i686-w64-mingw32/lib/pkgconfig/sdl2.pc b/libs/SDL2/i686-w64-mingw32/lib/pkgconfig/sdl2.pc
index 407c95c4..25fc5928 100644
--- a/libs/SDL2/i686-w64-mingw32/lib/pkgconfig/sdl2.pc
+++ b/libs/SDL2/i686-w64-mingw32/lib/pkgconfig/sdl2.pc
@@ -1,15 +1,15 @@
 # sdl pkg-config source file
 
-prefix=/usr/local/i686-w64-mingw32
+prefix=/opt/local/i686-w64-mingw32
 exec_prefix=${prefix}
 libdir=${exec_prefix}/lib
 includedir=${prefix}/include
 
 Name: sdl2
 Description: Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
-Version: 2.0.7
+Version: 2.0.9
 Requires:
 Conflicts:
-Libs: -L${libdir}  -lmingw32 -lSDL2main -lSDL2  -mwindows
-Libs.private: -lmingw32 -lSDL2main -lSDL2  -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -static-libgcc
+Libs: -L${libdir}  -lmingw32 -lSDL2main -lSDL2 -mwindows
+Libs.private: -lmingw32 -lSDL2main -lSDL2 -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
 Cflags: -I${includedir}/SDL2  -Dmain=SDL_main
diff --git a/libs/SDL2/include/SDL.h b/libs/SDL2/include/SDL.h
old mode 100755
new mode 100644
index 366d50fa..fc35a419
--- a/libs/SDL2/include/SDL.h
+++ b/libs/SDL2/include/SDL.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,6 +51,7 @@
 #include "SDL_power.h"
 #include "SDL_render.h"
 #include "SDL_rwops.h"
+#include "SDL_sensor.h"
 #include "SDL_shape.h"
 #include "SDL_system.h"
 #include "SDL_thread.h"
@@ -80,10 +81,11 @@ extern "C" {
 #define SDL_INIT_HAPTIC         0x00001000u
 #define SDL_INIT_GAMECONTROLLER 0x00002000u  /**< SDL_INIT_GAMECONTROLLER implies SDL_INIT_JOYSTICK */
 #define SDL_INIT_EVENTS         0x00004000u
+#define SDL_INIT_SENSOR         0x00008000u
 #define SDL_INIT_NOPARACHUTE    0x00100000u  /**< compatibility; this flag is ignored. */
 #define SDL_INIT_EVERYTHING ( \
                 SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | \
-                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER \
+                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER | SDL_INIT_SENSOR \
             )
 /* @} */
 
diff --git a/libs/SDL2/include/SDL_assert.h b/libs/SDL2/include/SDL_assert.h
old mode 100755
new mode 100644
index 90abbe39..b38f928a
--- a/libs/SDL2/include/SDL_assert.h
+++ b/libs/SDL2/include/SDL_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_atomic.h b/libs/SDL2/include/SDL_atomic.h
old mode 100755
new mode 100644
index 36e37f3b..b2287748
--- a/libs/SDL2/include/SDL_atomic.h
+++ b/libs/SDL2/include/SDL_atomic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -158,6 +158,9 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
 #if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("lwsync" : : : "memory")
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("lwsync" : : : "memory")
+#elif defined(__GNUC__) && defined(__aarch64__)
+#define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
+#define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 #elif defined(__GNUC__) && defined(__arm__)
 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
diff --git a/libs/SDL2/include/SDL_audio.h b/libs/SDL2/include/SDL_audio.h
old mode 100755
new mode 100644
index f119c2b2..d3e1bfac
--- a/libs/SDL2/include/SDL_audio.h
+++ b/libs/SDL2/include/SDL_audio.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -140,7 +140,8 @@ typedef Uint16 SDL_AudioFormat;
 #define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE    0x00000001
 #define SDL_AUDIO_ALLOW_FORMAT_CHANGE       0x00000002
 #define SDL_AUDIO_ALLOW_CHANNELS_CHANGE     0x00000004
-#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE)
+#define SDL_AUDIO_ALLOW_SAMPLES_CHANGE      0x00000008
+#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE)
 /* @} */
 
 /* @} *//* Audio flags */
@@ -527,7 +528,7 @@ extern DECLSPEC SDL_AudioStream * SDLCALL SDL_NewAudioStream(const SDL_AudioForm
  *
  *  \param stream The stream the audio data is being added to
  *  \param buf A pointer to the audio data to add
- *  \param int The number of bytes to write to the stream
+ *  \param len The number of bytes to write to the stream
  *  \return 0 on success, or -1 on error.
  *
  *  \sa SDL_NewAudioStream
diff --git a/libs/SDL2/include/SDL_bits.h b/libs/SDL2/include/SDL_bits.h
old mode 100755
new mode 100644
index bc285729..eb8322f0
--- a/libs/SDL2/include/SDL_bits.h
+++ b/libs/SDL2/include/SDL_bits.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_blendmode.h b/libs/SDL2/include/SDL_blendmode.h
old mode 100755
new mode 100644
index 9abd0bd4..36a5ea76
--- a/libs/SDL2/include/SDL_blendmode.h
+++ b/libs/SDL2/include/SDL_blendmode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_clipboard.h b/libs/SDL2/include/SDL_clipboard.h
old mode 100755
new mode 100644
index 341f4ba4..f28751eb
--- a/libs/SDL2/include/SDL_clipboard.h
+++ b/libs/SDL2/include/SDL_clipboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_config.h b/libs/SDL2/include/SDL_config.h
old mode 100755
new mode 100644
index 1bbb8384..c58be8e7
--- a/libs/SDL2/include/SDL_config.h
+++ b/libs/SDL2/include/SDL_config.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -82,6 +82,9 @@ typedef unsigned int uintptr_t;
 #define HAVE_DSOUND_H 1
 #define HAVE_DXGI_H 1
 #define HAVE_XINPUT_H 1
+#define HAVE_MMDEVICEAPI_H 1
+#define HAVE_AUDIOCLIENT_H 1
+#define HAVE_ENDPOINTVOLUME_H 1
 
 /* This is disabled by default to avoid C runtime dependencies and manifest requirements */
 #ifdef HAVE_LIBC
@@ -109,13 +112,15 @@ typedef unsigned int uintptr_t;
 #define HAVE_MEMCMP 1
 #define HAVE_STRLEN 1
 #define HAVE__STRREV 1
-#define HAVE__STRUPR 1
-#define HAVE__STRLWR 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__STRUPR */
+/* #undef HAVE__STRLWR */
 #define HAVE_STRCHR 1
 #define HAVE_STRRCHR 1
 #define HAVE_STRSTR 1
-#define HAVE__LTOA 1
-#define HAVE__ULTOA 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__LTOA */
+/* #undef HAVE__ULTOA */
 #define HAVE_STRTOL 1
 #define HAVE_STRTOUL 1
 #define HAVE_STRTOD 1
@@ -125,30 +130,45 @@ typedef unsigned int uintptr_t;
 #define HAVE_STRNCMP 1
 #define HAVE__STRICMP 1
 #define HAVE__STRNICMP 1
-#define HAVE_ATAN 1
-#define HAVE_ATAN2 1
-#define HAVE_ACOS  1
-#define HAVE_ASIN  1
-#define HAVE_CEIL 1
-#define HAVE_COS 1
-#define HAVE_COSF 1
-#define HAVE_FABS 1
-#define HAVE_FLOOR 1
-#define HAVE_LOG 1
-#define HAVE_POW 1
-#define HAVE_SIN 1
-#define HAVE_SINF 1
-#define HAVE_SQRT 1
-#define HAVE_SQRTF 1
-#define HAVE_TAN 1
-#define HAVE_TANF 1
-#define HAVE__COPYSIGN 1
+#define HAVE_ACOS   1
+#define HAVE_ACOSF  1
+#define HAVE_ASIN   1
+#define HAVE_ASINF  1
+#define HAVE_ATAN   1
+#define HAVE_ATANF  1
+#define HAVE_ATAN2  1
+#define HAVE_ATAN2F 1
+#define HAVE_CEILF  1
+#define HAVE__COPYSIGN  1
+#define HAVE_COS    1
+#define HAVE_COSF   1
+#define HAVE_EXP    1
+#define HAVE_EXPF   1
+#define HAVE_FABS   1
+#define HAVE_FABSF  1
+#define HAVE_FLOOR  1
+#define HAVE_FLOORF 1
+#define HAVE_FMOD   1
+#define HAVE_FMODF  1
+#define HAVE_LOG    1
+#define HAVE_LOGF   1
+#define HAVE_LOG10  1
+#define HAVE_LOG10F 1
+#define HAVE_POW    1
+#define HAVE_POWF   1
+#define HAVE_SIN    1
+#define HAVE_SINF   1
+#define HAVE_SQRT   1
+#define HAVE_SQRTF  1
+#define HAVE_TAN    1
+#define HAVE_TANF   1
 #if defined(_MSC_VER)
 /* These functions were added with the VC++ 2013 C runtime library */
 #if _MSC_VER >= 1800
 #define HAVE_STRTOLL 1
 #define HAVE_VSSCANF 1
 #define HAVE_SCALBN 1
+#define HAVE_SCALBNF    1
 #endif
 /* This function is available with at least the VC++ 2008 C runtime library */
 #if _MSC_VER >= 1400
@@ -166,7 +186,6 @@ typedef unsigned int uintptr_t;
 /* Enable various audio drivers */
 #define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DSOUND 1
-#define SDL_AUDIO_DRIVER_XAUDIO2    0
 #define SDL_AUDIO_DRIVER_WINMM  1
 #define SDL_AUDIO_DRIVER_DISK   1
 #define SDL_AUDIO_DRIVER_DUMMY  1
@@ -174,9 +193,13 @@ typedef unsigned int uintptr_t;
 /* Enable various input drivers */
 #define SDL_JOYSTICK_DINPUT 1
 #define SDL_JOYSTICK_XINPUT 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_HAPTIC_DINPUT   1
 #define SDL_HAPTIC_XINPUT   1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
 
@@ -194,7 +217,7 @@ typedef unsigned int uintptr_t;
 #define SDL_VIDEO_RENDER_D3D    1
 #endif
 #ifndef SDL_VIDEO_RENDER_D3D11
-#define SDL_VIDEO_RENDER_D3D11	0
+#define SDL_VIDEO_RENDER_D3D11  0
 #endif
 
 /* Enable OpenGL support */
diff --git a/libs/SDL2/include/SDL_config.h.cmake b/libs/SDL2/include/SDL_config.h.cmake
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config.h.in b/libs/SDL2/include/SDL_config.h.in
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_android.h b/libs/SDL2/include/SDL_config_android.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_iphoneos.h b/libs/SDL2/include/SDL_config_iphoneos.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_macosx.h b/libs/SDL2/include/SDL_config_macosx.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_macosx.h.orig b/libs/SDL2/include/SDL_config_macosx.h.orig
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_minimal.h b/libs/SDL2/include/SDL_config_minimal.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_pandora.h b/libs/SDL2/include/SDL_config_pandora.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_psp.h b/libs/SDL2/include/SDL_config_psp.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_windows.h b/libs/SDL2/include/SDL_config_windows.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_winrt.h b/libs/SDL2/include/SDL_config_winrt.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_config_wiz.h b/libs/SDL2/include/SDL_config_wiz.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_copying.h b/libs/SDL2/include/SDL_copying.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_cpuinfo.h b/libs/SDL2/include/SDL_cpuinfo.h
old mode 100755
new mode 100644
index 94b64b03..ee3a47e8
--- a/libs/SDL2/include/SDL_cpuinfo.h
+++ b/libs/SDL2/include/SDL_cpuinfo.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,27 +51,35 @@
 #include <intrin.h>
 #else
 #ifdef __ALTIVEC__
-#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__)
+#if defined(HAVE_ALTIVEC_H) && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
 #include <altivec.h>
 #undef pixel
+#undef bool
 #endif
 #endif
-#ifdef __MMX__
-#include <mmintrin.h>
+#if defined(__ARM_NEON__) && !defined(SDL_DISABLE_ARM_NEON_H)
+#include <arm_neon.h>
 #endif
-#ifdef __3dNOW__
+#if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
 #include <mm3dnow.h>
 #endif
-#ifdef __SSE__
+#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
+#include <immintrin.h>
+#else
+#if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
+#include <mmintrin.h>
+#endif
+#if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H)
 #include <xmmintrin.h>
 #endif
-#ifdef __SSE2__
+#if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H)
 #include <emmintrin.h>
 #endif
-#ifdef __SSE3__
+#if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H)
 #include <pmmintrin.h>
 #endif
-#endif
+#endif /* HAVE_IMMINTRIN_H */
+#endif /* compiler version */
 
 #include "begin_code.h"
 /* Set up for C function definitions, even when using C++ */
@@ -154,6 +162,11 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
+/**
+ *  This function returns true if the CPU has AVX-512F (foundation) features.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
+
 /**
  *  This function returns true if the CPU has NEON (ARM SIMD) features.
  */
@@ -164,7 +177,6 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
  */
 extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
 
-
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/include/SDL_egl.h b/libs/SDL2/include/SDL_egl.h
old mode 100755
new mode 100644
index e47fbe86..d65ed437
--- a/libs/SDL2/include/SDL_egl.h
+++ b/libs/SDL2/include/SDL_egl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -24,7 +24,7 @@
  *
  *  This is a simple file to encapsulate the EGL API headers.
  */
-#ifndef _MSC_VER
+#if !defined(_MSC_VER) && !defined(__ANDROID__)
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
diff --git a/libs/SDL2/include/SDL_endian.h b/libs/SDL2/include/SDL_endian.h
old mode 100755
new mode 100644
index 3eda7f28..ed0bf5ba
--- a/libs/SDL2/include/SDL_endian.h
+++ b/libs/SDL2/include/SDL_endian.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_error.h b/libs/SDL2/include/SDL_error.h
old mode 100755
new mode 100644
index 49be9827..c0e46298
--- a/libs/SDL2/include/SDL_error.h
+++ b/libs/SDL2/include/SDL_error.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_events.h b/libs/SDL2/include/SDL_events.h
old mode 100755
new mode 100644
index 0fc09bc3..af22eb64
--- a/libs/SDL2/include/SDL_events.h
+++ b/libs/SDL2/include/SDL_events.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -85,6 +85,9 @@ typedef enum
                                      Called on Android in onResume()
                                 */
 
+    /* Display events */
+    SDL_DISPLAYEVENT   = 0x150,  /**< Display state change */
+
     /* Window events */
     SDL_WINDOWEVENT    = 0x200, /**< Window state change */
     SDL_SYSWMEVENT,             /**< System specific event */
@@ -144,6 +147,9 @@ typedef enum
     SDL_AUDIODEVICEADDED = 0x1100, /**< A new audio device is available */
     SDL_AUDIODEVICEREMOVED,        /**< An audio device has been removed. */
 
+    /* Sensor events */
+    SDL_SENSORUPDATE = 0x1200,     /**< A sensor was updated */
+
     /* Render events */
     SDL_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
     SDL_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
@@ -168,6 +174,21 @@ typedef struct SDL_CommonEvent
     Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
 } SDL_CommonEvent;
 
+/**
+ *  \brief Display state change event data (event.display.*)
+ */
+typedef struct SDL_DisplayEvent
+{
+    Uint32 type;        /**< ::SDL_DISPLAYEVENT */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Uint32 display;     /**< The associated display index */
+    Uint8 event;        /**< ::SDL_DisplayEventID */
+    Uint8 padding1;
+    Uint8 padding2;
+    Uint8 padding3;
+    Sint32 data1;       /**< event dependent data */
+} SDL_DisplayEvent;
+
 /**
  *  \brief Window state change event data (event.window.*)
  */
@@ -471,6 +492,17 @@ typedef struct SDL_DropEvent
 } SDL_DropEvent;
 
 
+/**
+ *  \brief Sensor event structure (event.sensor.*)
+ */
+typedef struct SDL_SensorEvent
+{
+    Uint32 type;        /**< ::SDL_SENSORUPDATE */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Sint32 which;       /**< The instance ID of the sensor */
+    float data[6];      /**< Up to 6 values from the sensor - additional values can be queried using SDL_SensorGetData() */
+} SDL_SensorEvent;
+
 /**
  *  \brief The "quit requested" event
  */
@@ -526,6 +558,7 @@ typedef union SDL_Event
 {
     Uint32 type;                    /**< Event type, shared with all events */
     SDL_CommonEvent common;         /**< Common event data */
+    SDL_DisplayEvent display;       /**< Window event data */
     SDL_WindowEvent window;         /**< Window event data */
     SDL_KeyboardEvent key;          /**< Keyboard event data */
     SDL_TextEditingEvent edit;      /**< Text editing event data */
@@ -542,6 +575,7 @@ typedef union SDL_Event
     SDL_ControllerButtonEvent cbutton;  /**< Game Controller button event data */
     SDL_ControllerDeviceEvent cdevice;  /**< Game Controller device event data */
     SDL_AudioDeviceEvent adevice;   /**< Audio device event data */
+    SDL_SensorEvent sensor;         /**< Sensor event data */
     SDL_QuitEvent quit;             /**< Quit request event data */
     SDL_UserEvent user;             /**< Custom event data */
     SDL_SysWMEvent syswm;           /**< System dependent window event data */
diff --git a/libs/SDL2/include/SDL_filesystem.h b/libs/SDL2/include/SDL_filesystem.h
old mode 100755
new mode 100644
index a1c846ad..fa6a1fa6
--- a/libs/SDL2/include/SDL_filesystem.h
+++ b/libs/SDL2/include/SDL_filesystem.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_gamecontroller.h b/libs/SDL2/include/SDL_gamecontroller.h
old mode 100755
new mode 100644
index c9215132..6ae9c954
--- a/libs/SDL2/include/SDL_gamecontroller.h
+++ b/libs/SDL2/include/SDL_gamecontroller.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -175,6 +175,14 @@ extern DECLSPEC SDL_bool SDLCALL SDL_IsGameController(int joystick_index);
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index);
 
+/**
+ *  Get the mapping of a game controller.
+ *  This can be called before any controllers are opened.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char *SDLCALL SDL_GameControllerMappingForDeviceIndex(int joystick_index);
+
 /**
  *  Open a game controller for use.
  *  The index passed as an argument refers to the N'th game controller on the system.
@@ -196,6 +204,13 @@ extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromInstanceID(SDL
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller);
 
+/**
+ *  Get the player index of an opened game controller, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller);
+
 /**
  *  Get the USB vendor ID of an opened controller, if available.
  *  If the vendor ID isn't available this function returns 0.
@@ -345,6 +360,19 @@ SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller,
 extern DECLSPEC Uint8 SDLCALL SDL_GameControllerGetButton(SDL_GameController *gamecontroller,
                                                           SDL_GameControllerButton button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param gamecontroller The controller to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a controller previously opened with SDL_GameControllerOpen().
  */
diff --git a/libs/SDL2/include/SDL_gesture.h b/libs/SDL2/include/SDL_gesture.h
old mode 100755
new mode 100644
index 2bba6a72..b223d80d
--- a/libs/SDL2/include/SDL_gesture.h
+++ b/libs/SDL2/include/SDL_gesture.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_haptic.h b/libs/SDL2/include/SDL_haptic.h
old mode 100755
new mode 100644
index 60daefaa..2ea1bfc1
--- a/libs/SDL2/include/SDL_haptic.h
+++ b/libs/SDL2/include/SDL_haptic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -117,6 +117,17 @@
 extern "C" {
 #endif /* __cplusplus */
 
+/* FIXME: For SDL 2.1, adjust all the magnitude variables to be Uint16 (0xFFFF).
+ *
+ * At the moment the magnitude variables are mixed between signed/unsigned, and
+ * it is also not made clear that ALL of those variables expect a max of 0x7FFF.
+ *
+ * Some platforms may have higher precision than that (Linux FF, Windows XInput)
+ * so we should fix the inconsistency in favor of higher possible precision,
+ * adjusting for platforms that use different scales.
+ * -flibit
+ */
+
 /**
  *  \typedef SDL_Haptic
  *
@@ -656,8 +667,8 @@ typedef struct SDL_HapticRamp
  * This struct is exclusively for the ::SDL_HAPTIC_LEFTRIGHT effect.
  *
  * The Left/Right effect is used to explicitly control the large and small
- * motors, commonly found in modern game controllers. One motor is high
- * frequency, the other is low frequency.
+ * motors, commonly found in modern game controllers. The small (right) motor
+ * is high frequency, and the large (left) motor is low frequency.
  *
  * \sa SDL_HAPTIC_LEFTRIGHT
  * \sa SDL_HapticEffect
@@ -668,7 +679,7 @@ typedef struct SDL_HapticLeftRight
     Uint16 type;            /**< ::SDL_HAPTIC_LEFTRIGHT */
 
     /* Replay */
-    Uint32 length;          /**< Duration of the effect. */
+    Uint32 length;          /**< Duration of the effect in milliseconds. */
 
     /* Rumble */
     Uint16 large_magnitude; /**< Control of the large controller motor. */
diff --git a/libs/SDL2/include/SDL_hints.h b/libs/SDL2/include/SDL_hints.h
old mode 100755
new mode 100644
index 007a4bee..4ee72e97
--- a/libs/SDL2/include/SDL_hints.h
+++ b/libs/SDL2/include/SDL_hints.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,7 @@ extern "C" {
  *    "opengl"
  *    "opengles2"
  *    "opengles"
+ *    "metal"
  *    "software"
  *
  *  The default varies by platform, but it's the first one in the list that
@@ -210,6 +211,18 @@ extern "C" {
  */
 #define SDL_HINT_VIDEO_X11_NET_WM_PING      "SDL_VIDEO_X11_NET_WM_PING"
 
+/**
+ * \brief A variable controlling whether the X11 _NET_WM_BYPASS_COMPOSITOR hint should be used.
+ * 
+ * This variable can be set to the following values:
+ * "0" - Disable _NET_WM_BYPASS_COMPOSITOR
+ * "1" - Enable _NET_WM_BYPASS_COMPOSITOR
+ * 
+ * By default SDL will use _NET_WM_BYPASS_COMPOSITOR
+ * 
+ */
+#define SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR "SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR"
+
 /**
  *  \brief  A variable controlling whether the window frame and title bar are interactive when the cursor is hidden 
  *
@@ -249,6 +262,16 @@ extern "C" {
  */
 #define SDL_HINT_GRAB_KEYBOARD              "SDL_GRAB_KEYBOARD"
 
+/**
+ *  \brief  A variable setting the double click time, in milliseconds.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME    "SDL_MOUSE_DOUBLE_CLICK_TIME"
+
+/**
+ *  \brief  A variable setting the double click radius, in pixels.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS    "SDL_MOUSE_DOUBLE_CLICK_RADIUS"
+
 /**
  *  \brief  A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in relative mode
  */
@@ -316,7 +339,7 @@ extern "C" {
 #define SDL_HINT_IDLE_TIMER_DISABLED "SDL_IOS_IDLE_TIMER_DISABLED"
 
 /**
- *  \brief  A variable controlling which orientations are allowed on iOS.
+ *  \brief  A variable controlling which orientations are allowed on iOS/Android.
  *
  *  In some circumstances it is necessary to be able to explicitly control
  *  which UI orientations are allowed.
@@ -355,16 +378,36 @@ extern "C" {
 #define SDL_HINT_APPLE_TV_REMOTE_ALLOW_ROTATION "SDL_APPLE_TV_REMOTE_ALLOW_ROTATION"
 
 /**
- *  \brief  A variable controlling whether the Android / iOS built-in
- *  accelerometer should be listed as a joystick device, rather than listing
- *  actual joysticks only.
+ * \brief  A variable controlling whether the home indicator bar on iPhone X
+ *         should be hidden.
  *
  *  This variable can be set to the following values:
- *    "0"       - List only real joysticks and accept input from them
- *    "1"       - List real joysticks along with the accelerometer as if it were a 3 axis joystick (the default).
+ *    "0"       - The indicator bar is not hidden (default for windowed applications)
+ *    "1"       - The indicator bar is hidden and is shown when the screen is touched (useful for movie playback applications)
+ *    "2"       - The indicator bar is dim and the first swipe makes it visible and the second swipe performs the "home" action (default for fullscreen applications)
+ */
+#define SDL_HINT_IOS_HIDE_HOME_INDICATOR "SDL_IOS_HIDE_HOME_INDICATOR"
+
+/**
+ *  \brief  A variable controlling whether the Android / iOS built-in
+ *  accelerometer should be listed as a joystick device.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - The accelerometer is not listed as a joystick
+ *    "1"       - The accelerometer is available as a 3 axis joystick (the default).
  */
 #define SDL_HINT_ACCELEROMETER_AS_JOYSTICK "SDL_ACCELEROMETER_AS_JOYSTICK"
 
+/**
+ *  \brief  A variable controlling whether the Android / tvOS remotes
+ *  should be listed as joystick devices, instead of sending keyboard events.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - Remotes send enter/escape/arrow key events
+ *    "1"       - Remotes are available as 2 axis, 2 button joysticks (the default).
+ */
+#define SDL_HINT_TV_REMOTE_AS_JOYSTICK "SDL_TV_REMOTE_AS_JOYSTICK"
+
 /**
  *  \brief  A variable that lets you disable the detection and use of Xinput gamepad devices
  *
@@ -432,6 +475,88 @@ extern "C" {
  */
 #define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS"
 
+/**
+ *  \brief  A variable controlling whether the HIDAPI joystick drivers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI drivers are not used
+ *    "1"       - HIDAPI drivers are used (the default)
+ *
+ *  This variable is the default for all drivers, but can be overridden by the hints for specific drivers below.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI "SDL_JOYSTICK_HIDAPI"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for PS4 controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4 "SDL_JOYSTICK_HIDAPI_PS4"
+
+/**
+ *  \brief  A variable controlling whether extended input reports should be used for PS4 controllers when using the HIDAPI driver.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - extended reports are not enabled (the default)
+ *    "1"       - extended reports
+ *
+ *  Extended input reports allow rumble on Bluetooth PS4 controllers, but
+ *  break DirectInput handling for applications that don't use SDL.
+ *
+ *  Once extended reports are enabled, they can not be disabled without
+ *  power cycling the controller.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE "SDL_JOYSTICK_HIDAPI_PS4_RUMBLE"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Steam Controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Nintendo Switch controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH "SDL_JOYSTICK_HIDAPI_SWITCH"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for XBox controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_XBOX   "SDL_JOYSTICK_HIDAPI_XBOX"
+
+/**
+ *  \brief  A variable that controls whether Steam Controllers should be exposed using the SDL joystick and game controller APIs
+ *
+ *  The variable can be set to the following values:
+ *    "0"       - Do not scan for Steam Controllers
+ *    "1"       - Scan for Steam Controllers (the default)
+ *
+ *  The default value is "1".  This hint must be set before initializing the joystick subsystem.
+ */
+#define SDL_HINT_ENABLE_STEAM_CONTROLLERS "SDL_ENABLE_STEAM_CONTROLLERS"
+
+
 /**
  *  \brief If set to "0" then never set the top most bit on a SDL Window, even if the video mode expects it.
  *      This is a debugging aid for developers and not expected to be used by end users. The default is "1"
@@ -494,6 +619,10 @@ extern "C" {
 *  This is specially useful if you build SDL against a non glibc libc library (such as musl) which
 *  provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
 *  Support for this hint is currently available only in the pthread, Windows, and PSP backend.
+*
+*  Instead of this hint, in 2.0.9 and later, you can use
+*  SDL_CreateThreadWithStackSize(). This hint only works with the classic
+*  SDL_CreateThread().
 */
 #define SDL_HINT_THREAD_STACK_SIZE              "SDL_THREAD_STACK_SIZE"
 
@@ -719,6 +848,35 @@ extern "C" {
  */
 #define SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH "SDL_ANDROID_SEPARATE_MOUSE_AND_TOUCH"
 
+ /**
+ * \brief A variable to control whether we trap the Android back button to handle it manually.
+ *        This is necessary for the right mouse button to work on some Android devices, or
+ *        to be able to trap the back button for use in your code reliably.  If set to true,
+ *        the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of 
+ *        SDL_SCANCODE_AC_BACK.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - Back button will be handled as usual for system. (default)
+ *   "1"       - Back button will be trapped, allowing you to handle the key press
+ *               manually.  (This will also let right mouse click work on systems 
+ *               where the right mouse button functions as back.)
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON"
+
+ /**
+ * \brief A variable to control whether the return key on the soft keyboard
+ *        should hide the soft keyboard on Android and iOS.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - The return key will be handled as a key event. This is the behaviour of SDL <= 2.0.3. (default)
+ *   "1"       - The return key will hide the keyboard.
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_RETURN_KEY_HIDES_IME "SDL_RETURN_KEY_HIDES_IME"
+
 /**
  *  \brief override the binding element for keyboard inputs for Emscripten builds
  *
@@ -752,7 +910,7 @@ extern "C" {
  *   "0"       - SDL will generate a window-close event when it sees Alt+F4.
  *   "1"       - SDL will only do normal key handling for Alt+F4.
  */
-#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4	"SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
+#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4 "SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
 
 /**
  *  \brief Prevent SDL from using version 4 of the bitmap header when saving BMPs.
@@ -797,6 +955,24 @@ extern "C" {
  */
 #define SDL_HINT_RPI_VIDEO_LAYER           "SDL_RPI_VIDEO_LAYER"
 
+/**
+ * \brief Tell the video driver that we only want a double buffer.
+ *
+ * By default, most lowlevel 2D APIs will use a triple buffer scheme that 
+ * wastes no CPU time on waiting for vsync after issuing a flip, but
+ * introduces a frame of latency. On the other hand, using a double buffer
+ * scheme instead is recommended for cases where low latency is an important
+ * factor because we save a whole frame of latency.
+ * We do so by waiting for vsync immediately after issuing a flip, usually just
+ * after eglSwapBuffers call in the backend's *_SwapWindow function.
+ *
+ * Since it's driver-specific, it's only supported where possible and
+ * implemented. Currently supported the following drivers:
+ * - KMSDRM (kmsdrm)
+ * - Raspberry Pi (raspberrypi)
+ */
+#define SDL_HINT_VIDEO_DOUBLE_BUFFER      "SDL_VIDEO_DOUBLE_BUFFER"
+
 /**
  *  \brief  A variable controlling what driver to use for OpenGL ES contexts.
  *
diff --git a/libs/SDL2/include/SDL_joystick.h b/libs/SDL2/include/SDL_joystick.h
old mode 100755
new mode 100644
index f598dc82..6e05a9c2
--- a/libs/SDL2/include/SDL_joystick.h
+++ b/libs/SDL2/include/SDL_joystick.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,10 +97,10 @@ typedef enum
 typedef enum
 {
     SDL_JOYSTICK_POWER_UNKNOWN = -1,
-    SDL_JOYSTICK_POWER_EMPTY,
-    SDL_JOYSTICK_POWER_LOW,
-    SDL_JOYSTICK_POWER_MEDIUM,
-    SDL_JOYSTICK_POWER_FULL,
+    SDL_JOYSTICK_POWER_EMPTY,   /* <= 5% */
+    SDL_JOYSTICK_POWER_LOW,     /* <= 20% */
+    SDL_JOYSTICK_POWER_MEDIUM,  /* <= 70% */
+    SDL_JOYSTICK_POWER_FULL,    /* <= 100% */
     SDL_JOYSTICK_POWER_WIRED,
     SDL_JOYSTICK_POWER_MAX
 } SDL_JoystickPowerLevel;
@@ -132,6 +132,12 @@ extern DECLSPEC int SDLCALL SDL_NumJoysticks(void);
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickNameForIndex(int device_index);
 
+/**
+ *  Get the player index of a joystick, or -1 if it's not available
+ *  This can be called before any joysticks are opened.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetDevicePlayerIndex(int device_index);
+
 /**
  *  Return the GUID for the joystick at this index
  *  This can be called before any joysticks are opened.
@@ -194,6 +200,13 @@ extern DECLSPEC SDL_Joystick *SDLCALL SDL_JoystickFromInstanceID(SDL_JoystickID
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickName(SDL_Joystick * joystick);
 
+/**
+ *  Get the player index of an opened joystick, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetPlayerIndex(SDL_Joystick * joystick);
+
 /**
  *  Return the GUID for this opened joystick
  */
@@ -361,6 +374,19 @@ extern DECLSPEC int SDLCALL SDL_JoystickGetBall(SDL_Joystick * joystick,
 extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetButton(SDL_Joystick * joystick,
                                                     int button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param joystick The joystick to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a joystick previously opened with SDL_JoystickOpen().
  */
diff --git a/libs/SDL2/include/SDL_keyboard.h b/libs/SDL2/include/SDL_keyboard.h
old mode 100755
new mode 100644
index e78ca469..87482317
--- a/libs/SDL2/include/SDL_keyboard.h
+++ b/libs/SDL2/include/SDL_keyboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_keycode.h b/libs/SDL2/include/SDL_keycode.h
old mode 100755
new mode 100644
index c41e45ff..d7d5b1db
--- a/libs/SDL2/include/SDL_keycode.h
+++ b/libs/SDL2/include/SDL_keycode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_loadso.h b/libs/SDL2/include/SDL_loadso.h
old mode 100755
new mode 100644
index 6ea256c6..da56fb45
--- a/libs/SDL2/include/SDL_loadso.h
+++ b/libs/SDL2/include/SDL_loadso.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_log.h b/libs/SDL2/include/SDL_log.h
old mode 100755
new mode 100644
index 356d0e1c..e12b6588
--- a/libs/SDL2/include/SDL_log.h
+++ b/libs/SDL2/include/SDL_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_main.h b/libs/SDL2/include/SDL_main.h
old mode 100755
new mode 100644
index 2af32360..98558217
--- a/libs/SDL2/include/SDL_main.h
+++ b/libs/SDL2/include/SDL_main.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -63,10 +63,13 @@
 /* On Android SDL provides a Java class in SDLActivity.java that is the
    main activity entry point.
 
-   See README-android.md for more details on extending that class.
+   See docs/README-android.md for more details on extending that class.
  */
 #define SDL_MAIN_NEEDED
 
+/* We need to export SDL_main so it can be launched from Java */
+#define SDLMAIN_DECLSPEC    DECLSPEC
+
 #elif defined(__NACL__)
 /* On NACL we use ppapi_simple to set up the application helper code,
    then wait for the first PSE_INSTANCE_DIDCHANGEVIEW event before 
@@ -85,6 +88,10 @@
 #define C_LINKAGE
 #endif /* __cplusplus */
 
+#ifndef SDLMAIN_DECLSPEC
+#define SDLMAIN_DECLSPEC
+#endif
+
 /**
  *  \file SDL_main.h
  *
@@ -107,7 +114,7 @@
 /**
  *  The prototype for the application's main() function
  */
-extern C_LINKAGE DECLSPEC int SDL_main(int argc, char *argv[]);
+extern C_LINKAGE SDLMAIN_DECLSPEC int SDL_main(int argc, char *argv[]);
 
 
 #include "begin_code.h"
diff --git a/libs/SDL2/include/SDL_messagebox.h b/libs/SDL2/include/SDL_messagebox.h
old mode 100755
new mode 100644
index c326d8f0..b7be59d8
--- a/libs/SDL2/include/SDL_messagebox.h
+++ b/libs/SDL2/include/SDL_messagebox.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_mouse.h b/libs/SDL2/include/SDL_mouse.h
old mode 100755
new mode 100644
index 6001bd46..d3c9f615
--- a/libs/SDL2/include/SDL_mouse.h
+++ b/libs/SDL2/include/SDL_mouse.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_mutex.h b/libs/SDL2/include/SDL_mutex.h
old mode 100755
new mode 100644
index 0272379e..ba4247ce
--- a/libs/SDL2/include/SDL_mutex.h
+++ b/libs/SDL2/include/SDL_mutex.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_name.h b/libs/SDL2/include/SDL_name.h
old mode 100755
new mode 100644
index 8095ed3f..ecd863f4
--- a/libs/SDL2/include/SDL_name.h
+++ b/libs/SDL2/include/SDL_name.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_opengl.h b/libs/SDL2/include/SDL_opengl.h
old mode 100755
new mode 100644
index 314dd57e..253d9c93
--- a/libs/SDL2/include/SDL_opengl.h
+++ b/libs/SDL2/include/SDL_opengl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_opengl_glext.h b/libs/SDL2/include/SDL_opengl_glext.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_opengles.h b/libs/SDL2/include/SDL_opengles.h
old mode 100755
new mode 100644
index 800c5930..18dd984b
--- a/libs/SDL2/include/SDL_opengles.h
+++ b/libs/SDL2/include/SDL_opengles.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_opengles2.h b/libs/SDL2/include/SDL_opengles2.h
old mode 100755
new mode 100644
index 102f2f3f..6ccecf21
--- a/libs/SDL2/include/SDL_opengles2.h
+++ b/libs/SDL2/include/SDL_opengles2.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_opengles2_gl2.h b/libs/SDL2/include/SDL_opengles2_gl2.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_opengles2_gl2ext.h b/libs/SDL2/include/SDL_opengles2_gl2ext.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_opengles2_gl2platform.h b/libs/SDL2/include/SDL_opengles2_gl2platform.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_opengles2_khrplatform.h b/libs/SDL2/include/SDL_opengles2_khrplatform.h
old mode 100755
new mode 100644
diff --git a/libs/SDL2/include/SDL_pixels.h b/libs/SDL2/include/SDL_pixels.h
old mode 100755
new mode 100644
index 04246689..0b4364b1
--- a/libs/SDL2/include/SDL_pixels.h
+++ b/libs/SDL2/include/SDL_pixels.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -287,7 +287,9 @@ enum
     SDL_PIXELFORMAT_NV12 =      /**< Planar mode: Y + U/V interleaved  (2 planes) */
         SDL_DEFINE_PIXELFOURCC('N', 'V', '1', '2'),
     SDL_PIXELFORMAT_NV21 =      /**< Planar mode: Y + V/U interleaved  (2 planes) */
-        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1')
+        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1'),
+    SDL_PIXELFORMAT_EXTERNAL_OES =      /**< Android video texture format */
+        SDL_DEFINE_PIXELFOURCC('O', 'E', 'S', ' ')
 };
 
 typedef struct SDL_Color
diff --git a/libs/SDL2/include/SDL_platform.h b/libs/SDL2/include/SDL_platform.h
old mode 100755
new mode 100644
index 9dde385f..7dea4ce9
--- a/libs/SDL2/include/SDL_platform.h
+++ b/libs/SDL2/include/SDL_platform.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -121,7 +121,12 @@
 #if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
 /* Try to find out if we're compiling for WinRT or non-WinRT */
 #if defined(_MSC_VER) && defined(__has_include)
-#define HAVE_WINAPIFAMILY_H __has_include(<winapifamily.h>)
+#if __has_include(<winapifamily.h>)
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
 /* If _USING_V110_SDK71_ is defined it means we are using the Windows XP toolset. */
 #elif defined(_MSC_VER) && (_MSC_VER >= 1700 && !_USING_V110_SDK71_)    /* _MSC_VER == 1700 for Visual Studio 2012 */
 #define HAVE_WINAPIFAMILY_H 1
diff --git a/libs/SDL2/include/SDL_power.h b/libs/SDL2/include/SDL_power.h
old mode 100755
new mode 100644
index d48e8a37..a4fe8a93
--- a/libs/SDL2/include/SDL_power.h
+++ b/libs/SDL2/include/SDL_power.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_quit.h b/libs/SDL2/include/SDL_quit.h
old mode 100755
new mode 100644
index 9283c381..fea56a8d
--- a/libs/SDL2/include/SDL_quit.h
+++ b/libs/SDL2/include/SDL_quit.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_rect.h b/libs/SDL2/include/SDL_rect.h
old mode 100755
new mode 100644
index c4f6d74b..543bb618
--- a/libs/SDL2/include/SDL_rect.h
+++ b/libs/SDL2/include/SDL_rect.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_render.h b/libs/SDL2/include/SDL_render.h
old mode 100755
new mode 100644
index ea6ef9ff..d3361929
--- a/libs/SDL2/include/SDL_render.h
+++ b/libs/SDL2/include/SDL_render.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -898,6 +898,27 @@ extern DECLSPEC int SDLCALL SDL_GL_BindTexture(SDL_Texture *texture, float *texw
  */
 extern DECLSPEC int SDLCALL SDL_GL_UnbindTexture(SDL_Texture *texture);
 
+/**
+ *  \brief Get the CAMetalLayer associated with the given Metal renderer
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return CAMetalLayer* on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalCommandEncoder()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalLayer(SDL_Renderer * renderer);
+
+/**
+ *  \brief Get the Metal command encoder for the current frame
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return id<MTLRenderCommandEncoder> on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalLayer()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalCommandEncoder(SDL_Renderer * renderer);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/include/SDL_revision.h b/libs/SDL2/include/SDL_revision.h
old mode 100755
new mode 100644
index 9376093e..92fbe67b
--- a/libs/SDL2/include/SDL_revision.h
+++ b/libs/SDL2/include/SDL_revision.h
@@ -1,2 +1,2 @@
-#define SDL_REVISION "hg-11645:2088cd828335"
-#define SDL_REVISION_NUMBER 11645
+#define SDL_REVISION "hg-12373:8feb5da6f2fb"
+#define SDL_REVISION_NUMBER 12373
diff --git a/libs/SDL2/include/SDL_rwops.h b/libs/SDL2/include/SDL_rwops.h
old mode 100755
new mode 100644
index 7f0cbdfd..0960699d
--- a/libs/SDL2/include/SDL_rwops.h
+++ b/libs/SDL2/include/SDL_rwops.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_scancode.h b/libs/SDL2/include/SDL_scancode.h
old mode 100755
new mode 100644
index 1d552120..63871aa3
--- a/libs/SDL2/include/SDL_scancode.h
+++ b/libs/SDL2/include/SDL_scancode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_sensor.h b/libs/SDL2/include/SDL_sensor.h
new file mode 100644
index 00000000..ac163a8c
--- /dev/null
+++ b/libs/SDL2/include/SDL_sensor.h
@@ -0,0 +1,251 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  \file SDL_sensor.h
+ *
+ *  Include file for SDL sensor event handling
+ *
+ */
+
+#ifndef _SDL_sensor_h
+#define _SDL_sensor_h
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+/**
+ *  \brief SDL_sensor.h
+ *
+ *  In order to use these functions, SDL_Init() must have been called
+ *  with the ::SDL_INIT_SENSOR flag.  This causes SDL to scan the system
+ *  for sensors, and load appropriate drivers.
+ */
+
+struct _SDL_Sensor;
+typedef struct _SDL_Sensor SDL_Sensor;
+
+/**
+ * This is a unique ID for a sensor for the time it is connected to the system,
+ * and is never reused for the lifetime of the application.
+ *
+ * The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
+ */
+typedef Sint32 SDL_SensorID;
+
+/* The different sensors defined by SDL
+ *
+ * Additional sensors may be available, using platform dependent semantics.
+ *
+ * Hare are the additional Android sensors:
+ * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
+ */
+typedef enum
+{
+    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
+    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
+    SDL_SENSOR_ACCEL,           /**< Accelerometer */
+    SDL_SENSOR_GYRO             /**< Gyroscope */
+} SDL_SensorType;
+
+/**
+ * Accelerometer sensor
+ *
+ * The accelerometer returns the current acceleration in SI meters per
+ * second squared. This includes gravity, so a device at rest will have
+ * an acceleration of SDL_STANDARD_GRAVITY straight down.
+ *
+ * values[0]: Acceleration on the x axis
+ * values[1]: Acceleration on the y axis
+ * values[2]: Acceleration on the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+#define SDL_STANDARD_GRAVITY    9.80665f
+
+/**
+ * Gyroscope sensor
+ *
+ * The gyroscope returns the current rate of rotation in radians per second.
+ * The rotation is positive in the counter-clockwise direction. That is,
+ * an observer looking from a positive location on one of the axes would
+ * see positive rotation on that axis when it appeared to be rotating
+ * counter-clockwise.
+ *
+ * values[0]: Angular speed around the x axis
+ * values[1]: Angular speed around the y axis
+ * values[2]: Angular speed around the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+
+/* Function prototypes */
+
+/**
+ *  \brief Count the number of sensors attached to the system right now
+ */
+extern DECLSPEC int SDLCALL SDL_NumSensors(void);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ * 
+ *  \return The sensor name, or NULL if device_index is out of range.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if device_index is out of range.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index);
+
+/**
+ *  \brief Open a sensor for use.
+ *
+ *  The index passed as an argument refers to the N'th sensor on the system.
+ *
+ *  \return A sensor identifier, or NULL if an error occurred.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index);
+
+/**
+ * Return the SDL_Sensor associated with an instance id.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  \return The sensor name, or NULL if the sensor is NULL.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor);
+
+/**
+ *  Get the current state of an opened sensor.
+ *
+ *  The number of values and interpretation of the data is sensor dependent.
+ *
+ *  \param sensor The sensor to query
+ *  \param data A pointer filled with the current sensor state
+ *  \param num_values The number of values to write to data
+ *
+ *  \return 0 or -1 if an error occurred.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor * sensor, float *data, int num_values);
+
+/**
+ *  Close a sensor previously opened with SDL_SensorOpen()
+ */
+extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor * sensor);
+
+/**
+ *  Update the current state of the open sensors.
+ *
+ *  This is called automatically by the event loop if sensor events are enabled.
+ *
+ *  This needs to be called from the thread that initialized the sensor subsystem.
+ */
+extern DECLSPEC void SDLCALL SDL_SensorUpdate(void);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_sensor_h */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/include/SDL_shape.h b/libs/SDL2/include/SDL_shape.h
old mode 100755
new mode 100644
index 9e492d93..40a6baaa
--- a/libs/SDL2/include/SDL_shape.h
+++ b/libs/SDL2/include/SDL_shape.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_stdinc.h b/libs/SDL2/include/SDL_stdinc.h
old mode 100755
new mode 100644
index 72402299..e373bc38
--- a/libs/SDL2/include/SDL_stdinc.h
+++ b/libs/SDL2/include/SDL_stdinc.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -86,6 +86,28 @@
 #ifdef HAVE_FLOAT_H
 # include <float.h>
 #endif
+#if defined(HAVE_ALLOCA) && !defined(alloca)
+# if defined(HAVE_ALLOCA_H)
+#  include <alloca.h>
+# elif defined(__GNUC__)
+#  define alloca __builtin_alloca
+# elif defined(_MSC_VER)
+#  include <malloc.h>
+#  define alloca _alloca
+# elif defined(__WATCOMC__)
+#  include <malloc.h>
+# elif defined(__BORLANDC__)
+#  include <malloc.h>
+# elif defined(__DMC__)
+#  include <stdlib.h>
+# elif defined(__AIX__)
+#pragma alloca
+# elif defined(__MRC__)
+void *alloca(unsigned);
+# else
+char *alloca();
+# endif
+#endif
 
 /**
  *  The number of elements in an array.
@@ -328,28 +350,6 @@ SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
 extern "C" {
 #endif
 
-#if defined(HAVE_ALLOCA) && !defined(alloca)
-# if defined(HAVE_ALLOCA_H)
-#  include <alloca.h>
-# elif defined(__GNUC__)
-#  define alloca __builtin_alloca
-# elif defined(_MSC_VER)
-#  include <malloc.h>
-#  define alloca _alloca
-# elif defined(__WATCOMC__)
-#  include <malloc.h>
-# elif defined(__BORLANDC__)
-#  include <malloc.h>
-# elif defined(__DMC__)
-#  include <stdlib.h>
-# elif defined(__AIX__)
-#pragma alloca
-# elif defined(__MRC__)
-void *alloca(unsigned);
-# else
-char *alloca();
-# endif
-#endif
 #ifdef HAVE_ALLOCA
 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
 #define SDL_stack_free(data)
@@ -445,12 +445,12 @@ SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
 #endif
 }
 
-
 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 
 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
 
+extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
@@ -501,18 +501,35 @@ extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size
 #endif
 
 extern DECLSPEC double SDLCALL SDL_acos(double x);
+extern DECLSPEC float SDLCALL SDL_acosf(float x);
 extern DECLSPEC double SDLCALL SDL_asin(double x);
+extern DECLSPEC float SDLCALL SDL_asinf(float x);
 extern DECLSPEC double SDLCALL SDL_atan(double x);
+extern DECLSPEC float SDLCALL SDL_atanf(float x);
 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
+extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
 extern DECLSPEC double SDLCALL SDL_ceil(double x);
+extern DECLSPEC float SDLCALL SDL_ceilf(float x);
 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
+extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_cos(double x);
 extern DECLSPEC float SDLCALL SDL_cosf(float x);
+extern DECLSPEC double SDLCALL SDL_exp(double x);
+extern DECLSPEC float SDLCALL SDL_expf(float x);
 extern DECLSPEC double SDLCALL SDL_fabs(double x);
+extern DECLSPEC float SDLCALL SDL_fabsf(float x);
 extern DECLSPEC double SDLCALL SDL_floor(double x);
+extern DECLSPEC float SDLCALL SDL_floorf(float x);
+extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
+extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_log(double x);
+extern DECLSPEC float SDLCALL SDL_logf(float x);
+extern DECLSPEC double SDLCALL SDL_log10(double x);
+extern DECLSPEC float SDLCALL SDL_log10f(float x);
 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
+extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
+extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
 extern DECLSPEC double SDLCALL SDL_sin(double x);
 extern DECLSPEC float SDLCALL SDL_sinf(float x);
 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
diff --git a/libs/SDL2/include/SDL_surface.h b/libs/SDL2/include/SDL_surface.h
old mode 100755
new mode 100644
index 510690c9..730d49fc
--- a/libs/SDL2/include/SDL_surface.h
+++ b/libs/SDL2/include/SDL_surface.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,6 +97,17 @@ typedef struct SDL_Surface
 typedef int (SDLCALL *SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
                                  struct SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ * \brief The formula used for converting between YUV and RGB
+ */
+typedef enum
+{
+    SDL_YUV_CONVERSION_JPEG,        /**< Full range JPEG */
+    SDL_YUV_CONVERSION_BT601,       /**< BT.601 (the default) */
+    SDL_YUV_CONVERSION_BT709,       /**< BT.709 */
+    SDL_YUV_CONVERSION_AUTOMATIC    /**< BT.601 for SD content, BT.709 for HD content */
+} SDL_YUV_CONVERSION_MODE;
+
 /**
  *  Allocate and free an RGB surface.
  *
@@ -237,6 +248,13 @@ extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
                                             int flag, Uint32 key);
 
+/**
+ *  \brief Returns whether the surface has a color key
+ *
+ *  \return SDL_TRUE if the surface has a color key, or SDL_FALSE if the surface is NULL or has no color key
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasColorKey(SDL_Surface * surface);
+
 /**
  *  \brief Gets the color key (transparent pixel) in a blittable surface.
  *
@@ -509,6 +527,20 @@ extern DECLSPEC int SDLCALL SDL_LowerBlitScaled
     (SDL_Surface * src, SDL_Rect * srcrect,
     SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ *  \brief Set the YUV conversion mode
+ */
+extern DECLSPEC void SDLCALL SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_MODE mode);
+
+/**
+ *  \brief Get the YUV conversion mode
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionMode(void);
+
+/**
+ *  \brief Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionModeForResolution(int width, int height);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/include/SDL_system.h b/libs/SDL2/include/SDL_system.h
old mode 100755
new mode 100644
index eb069b33..4dc372d6
--- a/libs/SDL2/include/SDL_system.h
+++ b/libs/SDL2/include/SDL_system.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,18 @@ extern DECLSPEC SDL_bool SDLCALL SDL_DXGIGetOutputInfo( int displayIndex, int *a
 #endif /* __WIN32__ */
 
 
+/* Platform specific functions for Linux */
+#ifdef __LINUX__
+
+/**
+   \brief Sets the UNIX nice value for a thread, using setpriority() if possible, and RealtimeKit if available.
+
+   \return 0 on success, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int priority);
+ 
+#endif /* __LINUX__ */
+	
 /* Platform specific functions for iOS */
 #if defined(__IPHONEOS__) && __IPHONEOS__
 
@@ -108,6 +120,26 @@ extern DECLSPEC void * SDLCALL SDL_AndroidGetJNIEnv(void);
  */
 extern DECLSPEC void * SDLCALL SDL_AndroidGetActivity(void);
 
+/**
+   \brief Return true if the application is running on Android TV
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsAndroidTV(void);
+
+/**
+   \brief Return true if the application is running on a Chromebook
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsChromebook(void);
+
+/**
+  \brief Return true is the application is running on a Samsung DeX docking station
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsDeXMode(void);
+
+/**
+ \brief Trigger the Android system back button behavior.
+ */
+extern DECLSPEC void SDLCALL SDL_AndroidBackButton(void);
+
 /**
    See the official Android developer guide for more information:
    http://developer.android.com/guide/topics/data/data-storage.html
@@ -169,6 +201,25 @@ typedef enum
 } SDL_WinRT_Path;
 
 
+/**
+ *  \brief WinRT Device Family
+ */
+typedef enum
+{
+    /** \brief Unknown family  */
+    SDL_WINRT_DEVICEFAMILY_UNKNOWN,
+
+    /** \brief Desktop family*/
+    SDL_WINRT_DEVICEFAMILY_DESKTOP,
+
+    /** \brief Mobile family (for example smartphone) */
+    SDL_WINRT_DEVICEFAMILY_MOBILE,
+
+    /** \brief XBox family */
+    SDL_WINRT_DEVICEFAMILY_XBOX,
+} SDL_WinRT_DeviceFamily;
+
+
 /**
  *  \brief Retrieves a WinRT defined path on the local file system
  *
@@ -203,8 +254,20 @@ extern DECLSPEC const wchar_t * SDLCALL SDL_WinRTGetFSPathUNICODE(SDL_WinRT_Path
  */
 extern DECLSPEC const char * SDLCALL SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathType);
 
+/**
+ *  \brief Detects the device family of WinRT plattform on runtime
+ *
+ *  \return Device family
+ */
+extern DECLSPEC SDL_WinRT_DeviceFamily SDLCALL SDL_WinRTGetDeviceFamily();
+
 #endif /* __WINRT__ */
 
+/**
+ \brief Return true if the current device is a tablet.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsTablet(void);
+
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/include/SDL_syswm.h b/libs/SDL2/include/SDL_syswm.h
old mode 100755
new mode 100644
index 2d18afb6..f1c4021c
--- a/libs/SDL2/include/SDL_syswm.h
+++ b/libs/SDL2/include/SDL_syswm.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -33,12 +33,6 @@
 #include "SDL_video.h"
 #include "SDL_version.h"
 
-#include "begin_code.h"
-/* Set up for C function definitions, even when using C++ */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /**
  *  \file SDL_syswm.h
  *
@@ -110,6 +104,12 @@ typedef void *EGLSurface;
 #include "SDL_egl.h"
 #endif
 
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  *  These are the various supported windowing subsystems
  */
diff --git a/libs/SDL2/include/SDL_test.h b/libs/SDL2/include/SDL_test.h
old mode 100755
new mode 100644
index f55afcb0..6cc373bf
--- a/libs/SDL2/include/SDL_test.h
+++ b/libs/SDL2/include/SDL_test.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_assert.h b/libs/SDL2/include/SDL_test_assert.h
old mode 100755
new mode 100644
index 11d83639..1788d7a2
--- a/libs/SDL2/include/SDL_test_assert.h
+++ b/libs/SDL2/include/SDL_test_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_common.h b/libs/SDL2/include/SDL_test_common.h
old mode 100755
new mode 100644
index 24eeb32a..be2e6b2a
--- a/libs/SDL2/include/SDL_test_common.h
+++ b/libs/SDL2/include/SDL_test_common.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_compare.h b/libs/SDL2/include/SDL_test_compare.h
old mode 100755
new mode 100644
index 9f4c4587..c22e447d
--- a/libs/SDL2/include/SDL_test_compare.h
+++ b/libs/SDL2/include/SDL_test_compare.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_crc32.h b/libs/SDL2/include/SDL_test_crc32.h
old mode 100755
new mode 100644
index add480c3..3d235d07
--- a/libs/SDL2/include/SDL_test_crc32.h
+++ b/libs/SDL2/include/SDL_test_crc32.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_font.h b/libs/SDL2/include/SDL_test_font.h
old mode 100755
new mode 100644
index 58c9f9d5..59cbdcad
--- a/libs/SDL2/include/SDL_test_font.h
+++ b/libs/SDL2/include/SDL_test_font.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_fuzzer.h b/libs/SDL2/include/SDL_test_fuzzer.h
old mode 100755
new mode 100644
index 6cf05747..8fcb9ebb
--- a/libs/SDL2/include/SDL_test_fuzzer.h
+++ b/libs/SDL2/include/SDL_test_fuzzer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_harness.h b/libs/SDL2/include/SDL_test_harness.h
old mode 100755
new mode 100644
index 68c4bcb7..8641e0a7
--- a/libs/SDL2/include/SDL_test_harness.h
+++ b/libs/SDL2/include/SDL_test_harness.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_images.h b/libs/SDL2/include/SDL_test_images.h
old mode 100755
new mode 100644
index 683d2f8a..9c4dd5b8
--- a/libs/SDL2/include/SDL_test_images.h
+++ b/libs/SDL2/include/SDL_test_images.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_log.h b/libs/SDL2/include/SDL_test_log.h
old mode 100755
new mode 100644
index 9f993fbb..ebd44fb5
--- a/libs/SDL2/include/SDL_test_log.h
+++ b/libs/SDL2/include/SDL_test_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_md5.h b/libs/SDL2/include/SDL_test_md5.h
old mode 100755
new mode 100644
index 67ca7d1d..0e410576
--- a/libs/SDL2/include/SDL_test_md5.h
+++ b/libs/SDL2/include/SDL_test_md5.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_memory.h b/libs/SDL2/include/SDL_test_memory.h
old mode 100755
new mode 100644
index 43b67f52..4827ae6f
--- a/libs/SDL2/include/SDL_test_memory.h
+++ b/libs/SDL2/include/SDL_test_memory.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_test_random.h b/libs/SDL2/include/SDL_test_random.h
old mode 100755
new mode 100644
index 2b01922c..0eb414ff
--- a/libs/SDL2/include/SDL_test_random.h
+++ b/libs/SDL2/include/SDL_test_random.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_thread.h b/libs/SDL2/include/SDL_thread.h
old mode 100755
new mode 100644
index d0f6575c..554dd0b6
--- a/libs/SDL2/include/SDL_thread.h
+++ b/libs/SDL2/include/SDL_thread.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -54,12 +54,13 @@ typedef unsigned int SDL_TLSID;
 /**
  *  The SDL thread priority.
  *
- *  \note On many systems you require special privileges to set high priority.
+ *  \note On many systems you require special privileges to set high or time critical priority.
  */
 typedef enum {
     SDL_THREAD_PRIORITY_LOW,
     SDL_THREAD_PRIORITY_NORMAL,
-    SDL_THREAD_PRIORITY_HIGH
+    SDL_THREAD_PRIORITY_HIGH,
+    SDL_THREAD_PRIORITY_TIME_CRITICAL
 } SDL_ThreadPriority;
 
 /**
@@ -105,14 +106,24 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
 
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
+                 const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
+
+
 /**
  *  Create a thread.
  */
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #endif
 
 #elif defined(__OS2__)
@@ -132,15 +143,31 @@ extern DECLSPEC SDL_Thread *SDLCALL
 SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #endif
 
 #else
 
+/**
+ *  Create a thread with a default stack size.
+ *
+ *  This is equivalent to calling:
+ *  SDL_CreateThreadWithStackSize(fn, name, 0, data);
+ */
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+
 /**
  *  Create a thread.
  *
@@ -158,9 +185,17 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
  *   If a system imposes requirements, SDL will try to munge the string for
  *    it (truncate, etc), but the original string contents will be available
  *    from SDL_GetThreadName().
+ *
+ *   The size (in bytes) of the new stack can be specified. Zero means "use
+ *    the system default" which might be wildly different between platforms
+ *    (x86 Linux generally defaults to eight megabytes, an embedded device
+ *    might be a few kilobytes instead).
+ *
+ *   In SDL 2.1, stacksize will be folded into the original SDL_CreateThread
+ *    function.
  */
 extern DECLSPEC SDL_Thread *SDLCALL
-SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
 
 #endif
 
diff --git a/libs/SDL2/include/SDL_timer.h b/libs/SDL2/include/SDL_timer.h
old mode 100755
new mode 100644
index 282625d3..5600618f
--- a/libs/SDL2/include/SDL_timer.h
+++ b/libs/SDL2/include/SDL_timer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_touch.h b/libs/SDL2/include/SDL_touch.h
old mode 100755
new mode 100644
index db9e25eb..f4075e79
--- a/libs/SDL2/include/SDL_touch.h
+++ b/libs/SDL2/include/SDL_touch.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_types.h b/libs/SDL2/include/SDL_types.h
old mode 100755
new mode 100644
index 06ee80cb..4ac248c8
--- a/libs/SDL2/include/SDL_types.h
+++ b/libs/SDL2/include/SDL_types.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/SDL_version.h b/libs/SDL2/include/SDL_version.h
old mode 100755
new mode 100644
index 5b4c4024..31443e14
--- a/libs/SDL2/include/SDL_version.h
+++ b/libs/SDL2/include/SDL_version.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -59,7 +59,7 @@ typedef struct SDL_version
 */
 #define SDL_MAJOR_VERSION   2
 #define SDL_MINOR_VERSION   0
-#define SDL_PATCHLEVEL      7
+#define SDL_PATCHLEVEL      9
 
 /**
  *  \brief Macro to determine SDL version program was compiled against.
diff --git a/libs/SDL2/include/SDL_video.h b/libs/SDL2/include/SDL_video.h
old mode 100755
new mode 100644
index 6f6cda8b..461f1380
--- a/libs/SDL2/include/SDL_video.h
+++ b/libs/SDL2/include/SDL_video.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -110,7 +110,9 @@ typedef enum
     SDL_WINDOW_MOUSE_FOCUS = 0x00000400,        /**< window has mouse focus */
     SDL_WINDOW_FULLSCREEN_DESKTOP = ( SDL_WINDOW_FULLSCREEN | 0x00001000 ),
     SDL_WINDOW_FOREIGN = 0x00000800,            /**< window not created by SDL */
-    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported */
+    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported.
+                                                     On macOS NSHighResolutionCapable must be set true in the
+                                                     application's Info.plist for this to have any effect. */
     SDL_WINDOW_MOUSE_CAPTURE = 0x00004000,      /**< window has mouse captured (unrelated to INPUT_GRABBED) */
     SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000,      /**< window should always be above others */
     SDL_WINDOW_SKIP_TASKBAR  = 0x00010000,      /**< window should not be added to the taskbar */
@@ -167,6 +169,24 @@ typedef enum
     SDL_WINDOWEVENT_HIT_TEST        /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL. */
 } SDL_WindowEventID;
 
+/**
+ *  \brief Event subtype for display events
+ */
+typedef enum
+{
+    SDL_DISPLAYEVENT_NONE,          /**< Never used */
+    SDL_DISPLAYEVENT_ORIENTATION    /**< Display orientation has changed to data1 */
+} SDL_DisplayEventID;
+
+typedef enum
+{
+    SDL_ORIENTATION_UNKNOWN,            /**< The display orientation can't be determined */
+    SDL_ORIENTATION_LANDSCAPE,          /**< The display is in landscape mode, with the right side up, relative to portrait mode */
+    SDL_ORIENTATION_LANDSCAPE_FLIPPED,  /**< The display is in landscape mode, with the left side up, relative to portrait mode */
+    SDL_ORIENTATION_PORTRAIT,           /**< The display is in portrait mode */
+    SDL_ORIENTATION_PORTRAIT_FLIPPED    /**< The display is in portrait mode, upside down */
+} SDL_DisplayOrientation;
+
 /**
  *  \brief An opaque handle to an OpenGL context.
  */
@@ -314,18 +334,6 @@ extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex);
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect);
 
-/**
- *  \brief Get the dots/pixels-per-inch for a display
- *
- *  \note Diagonal, horizontal and vertical DPI can all be optionally
- *        returned if the parameter is non-NULL.
- *
- *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
- *
- *  \sa SDL_GetNumVideoDisplays()
- */
-extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
-
 /**
  *  \brief Get the usable desktop area represented by a display, with the
  *         primary display located at 0,0
@@ -345,6 +353,27 @@ extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, fl
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect);
 
+/**
+ *  \brief Get the dots/pixels-per-inch for a display
+ *
+ *  \note Diagonal, horizontal and vertical DPI can all be optionally
+ *        returned if the parameter is non-NULL.
+ *
+ *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
+
+/**
+ *  \brief Get the orientation of a display
+ *
+ *  \return The orientation of the display, or SDL_ORIENTATION_UNKNOWN if it isn't available.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC SDL_DisplayOrientation SDLCALL SDL_GetDisplayOrientation(int displayIndex);
+
 /**
  *  \brief Returns the number of available display modes.
  *
@@ -470,7 +499,7 @@ extern DECLSPEC Uint32 SDLCALL SDL_GetWindowPixelFormat(SDL_Window * window);
  *  If the window is created with any of the SDL_WINDOW_OPENGL or
  *  SDL_WINDOW_VULKAN flags, then the corresponding LoadLibrary function
  *  (SDL_GL_LoadLibrary or SDL_Vulkan_LoadLibrary) is called and the
- *  corrensponding UnloadLibrary function is called by SDL_DestroyWindow().
+ *  corresponding UnloadLibrary function is called by SDL_DestroyWindow().
  *
  *  If SDL_WINDOW_VULKAN is specified and there isn't a working Vulkan driver,
  *  SDL_CreateWindow() will fail because SDL_Vulkan_LoadLibrary() will fail.
diff --git a/libs/SDL2/include/SDL_vulkan.h b/libs/SDL2/include/SDL_vulkan.h
old mode 100755
new mode 100644
index 803b5fee..972cca4d
--- a/libs/SDL2/include/SDL_vulkan.h
+++ b/libs/SDL2/include/SDL_vulkan.h
@@ -69,30 +69,43 @@ typedef VkSurfaceKHR SDL_vulkanSurface; /* for compatibility with Tizen */
  *  \brief Dynamically load a Vulkan loader library.
  *
  *  \param [in] path The platform dependent Vulkan loader library name, or
- *              \c NULL to open the default Vulkan loader library.
+ *              \c NULL.
  *
  *  \return \c 0 on success, or \c -1 if the library couldn't be loaded.
  *
- *  This should be done after initializing the video driver, but before
+ *  If \a path is NULL SDL will use the value of the environment variable
+ *  \c SDL_VULKAN_LIBRARY, if set, otherwise it loads the default Vulkan
+ *  loader library.
+ *
+ *  This should be called after initializing the video driver, but before
  *  creating any Vulkan windows. If no Vulkan loader library is loaded, the
  *  default library will be loaded upon creation of the first Vulkan window.
  *
- *  \note If you specify a non-NULL \a path, you should retrieve all of the
- *        Vulkan functions used in your program from the dynamic library using
+ *  \note It is fairly common for Vulkan applications to link with \a libvulkan
+ *        instead of explicitly loading it at run time. This will work with
+ *        SDL provided the application links to a dynamic library and both it
+ *        and SDL use the same search path.
+ *
+ *  \note If you specify a non-NULL \c path, an application should retrieve all
+ *        of the Vulkan functions it uses from the dynamic library using
  *        \c SDL_Vulkan_GetVkGetInstanceProcAddr() unless you can guarantee
- *        \a path points to the same vulkan loader library that you linked to.
+ *        \c path points to the same vulkan loader library the application
+ *        linked to.
  *
  *  \note On Apple devices, if \a path is NULL, SDL will attempt to find
  *        the vkGetInstanceProcAddr address within all the mach-o images of
- *        the current process. This is because the currently (v0.17.0)
- *        recommended MoltenVK (Vulkan on Metal) usage is as a static library.
- *        If it is not found then SDL will attempt to load \c libMoltenVK.dylib.
- *        Applications using the dylib alternative therefore do not need to do
- *        anything special when calling SDL.
+ *        the current process. This is because it is fairly common for Vulkan
+ *        applications to link with libvulkan (and historically MoltenVK was
+ *        provided as a static library). If it is not found then, on macOS, SDL
+ *        will attempt to load \c vulkan.framework/vulkan, \c libvulkan.1.dylib,
+ *        \c MoltenVK.framework/MoltenVK and \c libMoltenVK.dylib in that order.
+ *        On iOS SDL will attempt to load \c libMoltenVK.dylib. Applications
+ *        using a dynamic framework or .dylib must ensure it is included in its
+ *        application bundle.
  *
- *  \note On non-Apple devices, SDL requires you to either not link to the
- *        Vulkan loader or link to a dynamic library version. This limitation
- *        may be removed in a future version of SDL.
+ *  \note On non-Apple devices, application linking with a static libvulkan is
+ *        not supported. Either do not link to the Vulkan loader or link to a
+ *        dynamic library version.
  *
  *  \note This function will fail if there are no working Vulkan drivers
  *        installed.
@@ -122,11 +135,11 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \brief Get the names of the Vulkan instance extensions needed to create
  *         a surface with \c SDL_Vulkan_CreateSurface().
  *
- *  \param [in]     window Window for which the required Vulkan instance
+ *  \param [in]     \c NULL or window Window for which the required Vulkan instance
  *                  extensions should be retrieved
- *  \param [in,out] count pointer to an \c unsigned related to the number of
+ *  \param [in,out] pCount pointer to an \c unsigned related to the number of
  *                  required Vulkan instance extensions
- *  \param [out]    names \c NULL or a pointer to an array to be filled with the
+ *  \param [out]    pNames \c NULL or a pointer to an array to be filled with the
  *                  required Vulkan instance extensions
  *
  *  \return \c SDL_TRUE on success, \c SDL_FALSE on error.
@@ -140,6 +153,10 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  is smaller than the number of required extensions, \c SDL_FALSE will be
  *  returned instead of \c SDL_TRUE, to indicate that not all the required
  *  extensions were returned.
+ * 
+ *  \note If \c window is not NULL, it will be checked against its creation
+ *        flags to ensure that the Vulkan flag is present. This parameter
+ *        will be removed in a future major release.
  *
  *  \note The returned list of extensions will contain \c VK_KHR_surface
  *        and zero or more platform specific extensions
@@ -147,12 +164,13 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \note The extension names queried here must be enabled when calling
  *        VkCreateInstance, otherwise surface creation will fail.
  *
- *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag.
+ *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag
+ *        or be \c NULL
  *
  *  \code
  *  unsigned int count;
  *  // get count of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, NULL))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, NULL))
  *      handle_error();
  *
  *  static const char *const additionalExtensions[] =
@@ -166,7 +184,7 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *      handle_error();
  *
  *  // get names of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, names))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, names))
  *      handle_error();
  *
  *  // copy additional extensions after required extensions
@@ -240,6 +258,9 @@ extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_CreateSurface(
  * platform with high-DPI support (Apple calls this "Retina"), and not disabled
  * by the \c SDL_HINT_VIDEO_HIGHDPI_DISABLED hint.
  *
+ *  \note On macOS high-DPI support must be enabled for an application by
+ *        setting NSHighResolutionCapable to true in its Info.plist.
+ *
  *  \sa SDL_GetWindowSize()
  *  \sa SDL_CreateWindow()
  */
diff --git a/libs/SDL2/include/begin_code.h b/libs/SDL2/include/begin_code.h
old mode 100755
new mode 100644
index 5372d6f0..6c210624
--- a/libs/SDL2/include/begin_code.h
+++ b/libs/SDL2/include/begin_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/include/close_code.h b/libs/SDL2/include/close_code.h
old mode 100755
new mode 100644
index 2a352dbb..b3b70a4c
--- a/libs/SDL2/include/close_code.h
+++ b/libs/SDL2/include/close_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/lib/x64/SDL2.dll b/libs/SDL2/lib/x64/SDL2.dll
old mode 100755
new mode 100644
index 6776cdd8..934f8091
Binary files a/libs/SDL2/lib/x64/SDL2.dll and b/libs/SDL2/lib/x64/SDL2.dll differ
diff --git a/libs/SDL2/lib/x64/SDL2.lib b/libs/SDL2/lib/x64/SDL2.lib
old mode 100755
new mode 100644
index 42e5ee7d..f4941ae0
Binary files a/libs/SDL2/lib/x64/SDL2.lib and b/libs/SDL2/lib/x64/SDL2.lib differ
diff --git a/libs/SDL2/lib/x64/SDL2main.lib b/libs/SDL2/lib/x64/SDL2main.lib
old mode 100755
new mode 100644
index 1f409a24..61299465
Binary files a/libs/SDL2/lib/x64/SDL2main.lib and b/libs/SDL2/lib/x64/SDL2main.lib differ
diff --git a/libs/SDL2/lib/x64/SDL2test.lib b/libs/SDL2/lib/x64/SDL2test.lib
old mode 100755
new mode 100644
index b54347dd..5b032828
Binary files a/libs/SDL2/lib/x64/SDL2test.lib and b/libs/SDL2/lib/x64/SDL2test.lib differ
diff --git a/libs/SDL2/lib/x86/SDL2.dll b/libs/SDL2/lib/x86/SDL2.dll
old mode 100755
new mode 100644
index c21f747c..70177904
Binary files a/libs/SDL2/lib/x86/SDL2.dll and b/libs/SDL2/lib/x86/SDL2.dll differ
diff --git a/libs/SDL2/lib/x86/SDL2.lib b/libs/SDL2/lib/x86/SDL2.lib
old mode 100755
new mode 100644
index a36fab5a..cef79017
Binary files a/libs/SDL2/lib/x86/SDL2.lib and b/libs/SDL2/lib/x86/SDL2.lib differ
diff --git a/libs/SDL2/lib/x86/SDL2main.lib b/libs/SDL2/lib/x86/SDL2main.lib
old mode 100755
new mode 100644
index 2080d5db..55c40c7a
Binary files a/libs/SDL2/lib/x86/SDL2main.lib and b/libs/SDL2/lib/x86/SDL2main.lib differ
diff --git a/libs/SDL2/lib/x86/SDL2test.lib b/libs/SDL2/lib/x86/SDL2test.lib
old mode 100755
new mode 100644
index c26c50f6..d7a395ff
Binary files a/libs/SDL2/lib/x86/SDL2test.lib and b/libs/SDL2/lib/x86/SDL2test.lib differ
diff --git a/libs/SDL2/test/CMakeLists.txt b/libs/SDL2/test/CMakeLists.txt
new file mode 100644
index 00000000..3c25c5c7
--- /dev/null
+++ b/libs/SDL2/test/CMakeLists.txt
@@ -0,0 +1,122 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(SDL2 C)
+
+# Global settings for all of the test targets
+# FIXME: is this wrong?
+remove_definitions(-DUSING_GENERATED_CONFIG_H)
+link_libraries(SDL2_test SDL2-static)
+
+# FIXME: Parent directory CMakeLists.txt only sets these for mingw/cygwin,
+# but we need them for VS as well.
+if(WINDOWS)
+    link_libraries(SDL2main)
+    add_definitions(-Dmain=SDL_main)
+endif()
+
+add_executable(checkkeys checkkeys.c)
+add_executable(loopwave loopwave.c)
+add_executable(loopwavequeue loopwavequeue.c)
+add_executable(testresample testresample.c)
+add_executable(testaudioinfo testaudioinfo.c)
+
+file(GLOB TESTAUTOMATION_SOURCE_FILES testautomation*.c)
+add_executable(testautomation ${TESTAUTOMATION_SOURCE_FILES})
+
+add_executable(testmultiaudio testmultiaudio.c)
+add_executable(testaudiohotplug testaudiohotplug.c)
+add_executable(testaudiocapture testaudiocapture.c)
+add_executable(testatomic testatomic.c)
+add_executable(testintersections testintersections.c)
+add_executable(testrelative testrelative.c)
+add_executable(testhittesting testhittesting.c)
+add_executable(testdraw2 testdraw2.c)
+add_executable(testdrawchessboard testdrawchessboard.c)
+add_executable(testdropfile testdropfile.c)
+add_executable(testerror testerror.c)
+add_executable(testfile testfile.c)
+add_executable(testgamecontroller testgamecontroller.c)
+add_executable(testgesture testgesture.c)
+add_executable(testgl2 testgl2.c)
+add_executable(testgles testgles.c)
+add_executable(testgles2 testgles2.c)
+add_executable(testhaptic testhaptic.c)
+add_executable(testhotplug testhotplug.c)
+add_executable(testrumble testrumble.c)
+add_executable(testthread testthread.c)
+add_executable(testiconv testiconv.c)
+add_executable(testime testime.c)
+add_executable(testjoystick testjoystick.c)
+add_executable(testkeys testkeys.c)
+add_executable(testloadso testloadso.c)
+add_executable(testlock testlock.c)
+
+if(APPLE)
+    add_executable(testnative testnative.c
+                              testnativecocoa.m
+                              testnativex11.c)
+elseif(WINDOWS)
+    add_executable(testnative testnative.c testnativew32.c)
+elseif(UNIX)
+    add_executable(testnative testnative.c testnativex11.c)
+endif()
+
+add_executable(testoverlay2 testoverlay2.c testyuv_cvt.c)
+add_executable(testplatform testplatform.c)
+add_executable(testpower testpower.c)
+add_executable(testfilesystem testfilesystem.c)
+add_executable(testrendertarget testrendertarget.c)
+add_executable(testscale testscale.c)
+add_executable(testsem testsem.c)
+add_executable(testshader testshader.c)
+add_executable(testshape testshape.c)
+add_executable(testsprite2 testsprite2.c)
+add_executable(testspriteminimal testspriteminimal.c)
+add_executable(teststreaming teststreaming.c)
+add_executable(testtimer testtimer.c)
+add_executable(testver testver.c)
+add_executable(testviewport testviewport.c)
+add_executable(testwm2 testwm2.c)
+add_executable(testyuv testyuv.c testyuv_cvt.c)
+add_executable(torturethread torturethread.c)
+add_executable(testrendercopyex testrendercopyex.c)
+add_executable(testmessage testmessage.c)
+add_executable(testdisplayinfo testdisplayinfo.c)
+add_executable(testqsort testqsort.c)
+add_executable(testbounds testbounds.c)
+add_executable(testcustomcursor testcustomcursor.c)
+add_executable(controllermap controllermap.c)
+add_executable(testvulkan testvulkan.c)
+
+# HACK: Dummy target to cause the resource files to be copied to the build directory.
+# Need to make it an executable so we can use the TARGET_FILE_DIR generator expression.
+# This is needed so they get copied to the correct Debug/Release subdirectory in Xcode.
+file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/resources_dummy.c "int main(int argc, const char **argv){ return 1; }\n")
+add_executable(SDL2_test_resoureces ${CMAKE_CURRENT_BINARY_DIR}/resources_dummy.c)
+
+file(GLOB RESOURCE_FILES *.bmp *.wav)
+foreach(RESOURCE_FILE ${RESOURCE_FILES})
+    add_custom_command(TARGET SDL2_test_resoureces POST_BUILD COMMAND ${CMAKE_COMMAND} ARGS -E copy_if_different ${RESOURCE_FILE} $<TARGET_FILE_DIR:SDL2_test_resoureces>)
+endforeach(RESOURCE_FILE)
+
+file(COPY ${RESOURCE_FILES} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
+
+# TODO: Might be easier to make all targets depend on the resources...?
+add_dependencies(testscale SDL2_test_resoureces)
+add_dependencies(testrendercopyex SDL2_test_resoureces)
+add_dependencies(controllermap SDL2_test_resoureces)
+add_dependencies(testyuv SDL2_test_resoureces)
+add_dependencies(testgamecontroller SDL2_test_resoureces)
+add_dependencies(testshape SDL2_test_resoureces)
+add_dependencies(testshader SDL2_test_resoureces)
+add_dependencies(testnative SDL2_test_resoureces)
+add_dependencies(testspriteminimal SDL2_test_resoureces)
+add_dependencies(testautomation SDL2_test_resoureces)
+add_dependencies(testcustomcursor SDL2_test_resoureces)
+add_dependencies(testrendertarget SDL2_test_resoureces)
+add_dependencies(testsprite2 SDL2_test_resoureces)
+
+add_dependencies(loopwave SDL2_test_resoureces)
+add_dependencies(loopwavequeue SDL2_test_resoureces)
+add_dependencies(testresample SDL2_test_resoureces)
+add_dependencies(testaudiohotplug SDL2_test_resoureces)
+add_dependencies(testmultiaudio SDL2_test_resoureces)
diff --git a/libs/SDL2/test/Makefile.in b/libs/SDL2/test/Makefile.in
index 0ac70e92..9ddd6ffe 100644
--- a/libs/SDL2/test/Makefile.in
+++ b/libs/SDL2/test/Makefile.in
@@ -9,19 +9,23 @@ LIBS	= @LIBS@
 
 TARGETS = \
 	checkkeys$(EXE) \
+	controllermap$(EXE) \
 	loopwave$(EXE) \
 	loopwavequeue$(EXE) \
 	testatomic$(EXE) \
-	testaudioinfo$(EXE) \
 	testaudiocapture$(EXE) \
+	testaudiohotplug$(EXE) \
+	testaudioinfo$(EXE) \
 	testautomation$(EXE) \
 	testbounds$(EXE) \
 	testcustomcursor$(EXE) \
+	testdisplayinfo$(EXE) \
 	testdraw2$(EXE) \
 	testdrawchessboard$(EXE) \
 	testdropfile$(EXE) \
 	testerror$(EXE) \
 	testfile$(EXE) \
+	testfilesystem$(EXE) \
 	testgamecontroller$(EXE) \
 	testgesture$(EXE) \
 	testgl2$(EXE) \
@@ -29,44 +33,42 @@ TARGETS = \
 	testgles2$(EXE) \
 	testhaptic$(EXE) \
 	testhittesting$(EXE) \
-	testrumble$(EXE) \
 	testhotplug$(EXE) \
-	testthread$(EXE) \
 	testiconv$(EXE) \
 	testime$(EXE) \
 	testintersections$(EXE) \
-	testrelative$(EXE) \
 	testjoystick$(EXE) \
 	testkeys$(EXE) \
 	testloadso$(EXE) \
 	testlock$(EXE) \
+	testmessage$(EXE) \
 	testmultiaudio$(EXE) \
-	testaudiohotplug$(EXE) \
 	testnative$(EXE) \
 	testoverlay2$(EXE) \
 	testplatform$(EXE) \
 	testpower$(EXE) \
-	testfilesystem$(EXE) \
+	testqsort$(EXE) \
+	testrelative$(EXE) \
+	testrendercopyex$(EXE) \
 	testrendertarget$(EXE) \
 	testresample$(EXE) \
+	testrumble$(EXE) \
 	testscale$(EXE) \
 	testsem$(EXE) \
+	testsensor$(EXE) \
 	testshader$(EXE) \
 	testshape$(EXE) \
 	testsprite2$(EXE) \
 	testspriteminimal$(EXE) \
 	teststreaming$(EXE) \
+	testthread$(EXE) \
 	testtimer$(EXE) \
 	testver$(EXE) \
 	testviewport$(EXE) \
-	testwm2$(EXE) \
-	torturethread$(EXE) \
-	testrendercopyex$(EXE) \
-	testmessage$(EXE) \
-	testdisplayinfo$(EXE) \
-	testqsort$(EXE) \
-	controllermap$(EXE) \
 	testvulkan$(EXE) \
+	testwm2$(EXE) \
+	testyuv$(EXE) \
+	torturethread$(EXE) \
 	
 all: Makefile $(TARGETS) copydatafiles
 
@@ -218,7 +220,7 @@ endif
 endif
 endif
 
-testoverlay2$(EXE): $(srcdir)/testoverlay2.c
+testoverlay2$(EXE): $(srcdir)/testoverlay2.c $(srcdir)/testyuv_cvt.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
 testplatform$(EXE): $(srcdir)/testplatform.c
@@ -239,6 +241,9 @@ testscale$(EXE): $(srcdir)/testscale.c
 testsem$(EXE): $(srcdir)/testsem.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
+testsensor$(EXE): $(srcdir)/testsensor.c
+	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
+
 testshader$(EXE): $(srcdir)/testshader.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS) @GLLIB@ @MATHLIB@
 
@@ -266,6 +271,9 @@ testviewport$(EXE): $(srcdir)/testviewport.c
 testwm2$(EXE): $(srcdir)/testwm2.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
+testyuv$(EXE): $(srcdir)/testyuv.c $(srcdir)/testyuv_cvt.c
+	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
+
 torturethread$(EXE): $(srcdir)/torturethread.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
@@ -309,7 +317,10 @@ distclean: clean
 %.wav: $(srcdir)/%.wav
 	cp $< $@
 
-copydatafiles: copybmpfiles copywavfiles
+%.dat: $(srcdir)/%.dat
+	cp $< $@
+
+copydatafiles: copybmpfiles copywavfiles copydatfiles
 .PHONY : copydatafiles
 
 copybmpfiles: $(foreach bmp,$(wildcard $(srcdir)/*.bmp),$(notdir $(bmp)))
@@ -318,3 +329,6 @@ copybmpfiles: $(foreach bmp,$(wildcard $(srcdir)/*.bmp),$(notdir $(bmp)))
 copywavfiles: $(foreach wav,$(wildcard $(srcdir)/*.wav),$(notdir $(wav)))
 .PHONY : copywavfiles
 
+copydatfiles: $(foreach dat,$(wildcard $(srcdir)/*.dat),$(notdir $(dat)))
+.PHONY : copydatfiles
+
diff --git a/libs/SDL2/test/checkkeys.c b/libs/SDL2/test/checkkeys.c
index 066c786d..4452acab 100644
--- a/libs/SDL2/test/checkkeys.c
+++ b/libs/SDL2/test/checkkeys.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/controllermap.c b/libs/SDL2/test/controllermap.c
index c4fe5929..2ca53518 100644
--- a/libs/SDL2/test/controllermap.c
+++ b/libs/SDL2/test/controllermap.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/loopwave.c b/libs/SDL2/test/loopwave.c
index 63e19961..88d8fc87 100644
--- a/libs/SDL2/test/loopwave.c
+++ b/libs/SDL2/test/loopwave.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/loopwavequeue.c b/libs/SDL2/test/loopwavequeue.c
index 3dc7792f..3f0a69e1 100644
--- a/libs/SDL2/test/loopwavequeue.c
+++ b/libs/SDL2/test/loopwavequeue.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testatomic.c b/libs/SDL2/test/testatomic.c
index f8dca917..6af9d4bf 100644
--- a/libs/SDL2/test/testatomic.c
+++ b/libs/SDL2/test/testatomic.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testaudiocapture.c b/libs/SDL2/test/testaudiocapture.c
index 3b7ea0b7..a418d123 100644
--- a/libs/SDL2/test/testaudiocapture.c
+++ b/libs/SDL2/test/testaudiocapture.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testaudiohotplug.c b/libs/SDL2/test/testaudiohotplug.c
index a72f9174..374cbb27 100644
--- a/libs/SDL2/test/testaudiohotplug.c
+++ b/libs/SDL2/test/testaudiohotplug.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testaudioinfo.c b/libs/SDL2/test/testaudioinfo.c
index c70b86b5..adecce9b 100644
--- a/libs/SDL2/test/testaudioinfo.c
+++ b/libs/SDL2/test/testaudioinfo.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testautomation.c b/libs/SDL2/test/testautomation.c
index 9fd22be0..bb799ea4 100644
--- a/libs/SDL2/test/testautomation.c
+++ b/libs/SDL2/test/testautomation.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testbounds.c b/libs/SDL2/test/testbounds.c
index bc46cb82..76480944 100644
--- a/libs/SDL2/test/testbounds.c
+++ b/libs/SDL2/test/testbounds.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testcustomcursor.c b/libs/SDL2/test/testcustomcursor.c
index 59c6409d..46944981 100644
--- a/libs/SDL2/test/testcustomcursor.c
+++ b/libs/SDL2/test/testcustomcursor.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -73,6 +73,24 @@ init_color_cursor(const char *file)
     SDL_Cursor *cursor = NULL;
     SDL_Surface *surface = SDL_LoadBMP(file);
     if (surface) {
+        if (surface->format->palette) {
+            SDL_SetColorKey(surface, 1, *(Uint8 *) surface->pixels);
+        } else {
+            switch (surface->format->BitsPerPixel) {
+            case 15:
+                SDL_SetColorKey(surface, 1, (*(Uint16 *)surface->pixels) & 0x00007FFF);
+                break;
+            case 16:
+                SDL_SetColorKey(surface, 1, *(Uint16 *)surface->pixels);
+                break;
+            case 24:
+                SDL_SetColorKey(surface, 1, (*(Uint32 *)surface->pixels) & 0x00FFFFFF);
+                break;
+            case 32:
+                SDL_SetColorKey(surface, 1, *(Uint32 *)surface->pixels);
+                break;
+            }
+        }
         cursor = SDL_CreateColorCursor(surface, 0, 0);
         SDL_FreeSurface(surface);
     }
@@ -116,7 +134,9 @@ init_system_cursor(const char *image[])
 
 static SDLTest_CommonState *state;
 int done;
-SDL_Cursor *cursor = NULL;
+static SDL_Cursor *cursors[1+SDL_NUM_SYSTEM_CURSORS];
+static int current_cursor;
+static int show_cursor;
 
 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
 static void
@@ -134,6 +154,18 @@ loop()
     /* Check for events */
     while (SDL_PollEvent(&event)) {
         SDLTest_CommonEvent(state, &event, &done);
+        if (event.type == SDL_MOUSEBUTTONDOWN) {
+            if (event.button.button == SDL_BUTTON_LEFT) {
+                ++current_cursor;
+                if (current_cursor == SDL_arraysize(cursors)) {
+                    current_cursor = 0;
+                }
+                SDL_SetCursor(cursors[current_cursor]);
+            } else {
+                show_cursor = !show_cursor;
+                SDL_ShowCursor(show_cursor);
+            }
+        }
     }
     
     for (i = 0; i < state->num_windows; ++i) {
@@ -188,15 +220,22 @@ main(int argc, char *argv[])
     }
 
     if (color_cursor) {
-        cursor = init_color_cursor(color_cursor);
+        cursors[0] = init_color_cursor(color_cursor);
     } else {
-        cursor = init_system_cursor(arrow);
+        cursors[0] = init_system_cursor(arrow);
     }
-    if (!cursor) {
+    if (!cursors[0]) {
         SDL_Log("Error, couldn't create cursor\n");
         quit(2);
     }
-    SDL_SetCursor(cursor);
+    for (i = 0; i < SDL_NUM_SYSTEM_CURSORS; ++i) {
+        cursors[1+i] = SDL_CreateSystemCursor((SDL_SystemCursor)i);
+        if (!cursors[1+i]) {
+            SDL_Log("Error, couldn't create system cursor %d\n", i);
+            quit(2);
+        }
+    }
+    SDL_SetCursor(cursors[0]);
 
     /* Main render loop */
     done = 0;
@@ -208,9 +247,13 @@ main(int argc, char *argv[])
     }
 #endif
 
-    SDL_FreeCursor(cursor);
+    for (i = 0; i < SDL_arraysize(cursors); ++i) {
+        SDL_FreeCursor(cursors[i]);
+    }
     quit(0);
 
     /* keep the compiler happy ... */
     return(0);
 }
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/test/testdisplayinfo.c b/libs/SDL2/test/testdisplayinfo.c
index 51c19b01..0cc5fbdd 100644
--- a/libs/SDL2/test/testdisplayinfo.c
+++ b/libs/SDL2/test/testdisplayinfo.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testdraw2.c b/libs/SDL2/test/testdraw2.c
index 1472a386..91ee7eea 100644
--- a/libs/SDL2/test/testdraw2.c
+++ b/libs/SDL2/test/testdraw2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testdrawchessboard.c b/libs/SDL2/test/testdrawchessboard.c
index cef8621f..3dd78e1a 100644
--- a/libs/SDL2/test/testdrawchessboard.c
+++ b/libs/SDL2/test/testdrawchessboard.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+   Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testdropfile.c b/libs/SDL2/test/testdropfile.c
index b3cb17d9..1c2a3f0e 100644
--- a/libs/SDL2/test/testdropfile.c
+++ b/libs/SDL2/test/testdropfile.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testerror.c b/libs/SDL2/test/testerror.c
index 468f8a7f..87fcab21 100644
--- a/libs/SDL2/test/testerror.c
+++ b/libs/SDL2/test/testerror.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testfile.c b/libs/SDL2/test/testfile.c
index 23215ea2..e563d77b 100644
--- a/libs/SDL2/test/testfile.c
+++ b/libs/SDL2/test/testfile.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testfilesystem.c b/libs/SDL2/test/testfilesystem.c
index e8a3b3c3..ada4e864 100644
--- a/libs/SDL2/test/testfilesystem.c
+++ b/libs/SDL2/test/testfilesystem.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testgamecontroller.c b/libs/SDL2/test/testgamecontroller.c
index f586bfe2..c8616d7c 100644
--- a/libs/SDL2/test/testgamecontroller.c
+++ b/libs/SDL2/test/testgamecontroller.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -114,6 +114,11 @@ loop(void *arg)
         case SDL_CONTROLLERBUTTONDOWN:
         case SDL_CONTROLLERBUTTONUP:
             SDL_Log("Controller button %s %s\n", SDL_GameControllerGetStringForButton((SDL_GameControllerButton)event.cbutton.button), event.cbutton.state ? "pressed" : "released");
+            /* First button triggers a 0.5 second full strength rumble */
+            if (event.type == SDL_CONTROLLERBUTTONDOWN &&
+                event.cbutton.button == SDL_CONTROLLER_BUTTON_A) {
+                SDL_GameControllerRumble(gamecontroller, 0xFFFF, 0xFFFF, 500);
+            }
             break;
         case SDL_KEYDOWN:
             if (event.key.keysym.sym != SDLK_ESCAPE) {
diff --git a/libs/SDL2/test/testgesture.c b/libs/SDL2/test/testgesture.c
index f7db94fb..f4b254a6 100644
--- a/libs/SDL2/test/testgesture.c
+++ b/libs/SDL2/test/testgesture.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testgl2.c b/libs/SDL2/test/testgl2.c
index 114c1410..dd01d0e2 100644
--- a/libs/SDL2/test/testgl2.c
+++ b/libs/SDL2/test/testgl2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testgles.c b/libs/SDL2/test/testgles.c
index cb1da140..96895da0 100644
--- a/libs/SDL2/test/testgles.c
+++ b/libs/SDL2/test/testgles.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testgles2.c b/libs/SDL2/test/testgles2.c
index 282e0b61..c4578a5c 100644
--- a/libs/SDL2/test/testgles2.c
+++ b/libs/SDL2/test/testgles2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testhotplug.c b/libs/SDL2/test/testhotplug.c
index 765ce263..72c90e8d 100644
--- a/libs/SDL2/test/testhotplug.c
+++ b/libs/SDL2/test/testhotplug.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testiconv.c b/libs/SDL2/test/testiconv.c
index ff3b28c9..47e8c377 100644
--- a/libs/SDL2/test/testiconv.c
+++ b/libs/SDL2/test/testiconv.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testime.c b/libs/SDL2/test/testime.c
index 32f80cd6..77bb8696 100644
--- a/libs/SDL2/test/testime.c
+++ b/libs/SDL2/test/testime.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testintersections.c b/libs/SDL2/test/testintersections.c
index dcf1bc17..619df064 100644
--- a/libs/SDL2/test/testintersections.c
+++ b/libs/SDL2/test/testintersections.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testjoystick.c b/libs/SDL2/test/testjoystick.c
index 50e5cc96..bca74924 100644
--- a/libs/SDL2/test/testjoystick.c
+++ b/libs/SDL2/test/testjoystick.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -90,6 +90,10 @@ loop(void *arg)
             case SDL_JOYBUTTONDOWN:
                 SDL_Log("Joystick %d button %d down\n",
                        event.jbutton.which, event.jbutton.button);
+                /* First button triggers a 0.5 second full strength rumble */
+                if (event.jbutton.button == 0) {
+                    SDL_JoystickRumble(joystick, 0xFFFF, 0xFFFF, 500);
+                }
                 break;
             case SDL_JOYBUTTONUP:
                 SDL_Log("Joystick %d button %d up\n",
diff --git a/libs/SDL2/test/testkeys.c b/libs/SDL2/test/testkeys.c
index 33649d22..73f880e1 100644
--- a/libs/SDL2/test/testkeys.c
+++ b/libs/SDL2/test/testkeys.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testloadso.c b/libs/SDL2/test/testloadso.c
index 2dce11d6..c6fa3310 100644
--- a/libs/SDL2/test/testloadso.c
+++ b/libs/SDL2/test/testloadso.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testlock.c b/libs/SDL2/test/testlock.c
index e79fcda9..8299a9a6 100644
--- a/libs/SDL2/test/testlock.c
+++ b/libs/SDL2/test/testlock.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testmessage.c b/libs/SDL2/test/testmessage.c
index 07d0b030..8488d8ed 100644
--- a/libs/SDL2/test/testmessage.c
+++ b/libs/SDL2/test/testmessage.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testmultiaudio.c b/libs/SDL2/test/testmultiaudio.c
index 4bae3859..52a4cac7 100644
--- a/libs/SDL2/test/testmultiaudio.c
+++ b/libs/SDL2/test/testmultiaudio.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testnative.c b/libs/SDL2/test/testnative.c
index 83bc495d..674d9d3b 100644
--- a/libs/SDL2/test/testnative.c
+++ b/libs/SDL2/test/testnative.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testnative.h b/libs/SDL2/test/testnative.h
index b2ee5fa4..29d85fb3 100644
--- a/libs/SDL2/test/testnative.h
+++ b/libs/SDL2/test/testnative.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testnativew32.c b/libs/SDL2/test/testnativew32.c
index 7a27b127..7e96bc69 100644
--- a/libs/SDL2/test/testnativew32.c
+++ b/libs/SDL2/test/testnativew32.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testnativex11.c b/libs/SDL2/test/testnativex11.c
index 8908d22f..386c25e9 100644
--- a/libs/SDL2/test/testnativex11.c
+++ b/libs/SDL2/test/testnativex11.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testoverlay2.c b/libs/SDL2/test/testoverlay2.c
index 2145c4d3..daf07d3e 100644
--- a/libs/SDL2/test/testoverlay2.c
+++ b/libs/SDL2/test/testoverlay2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -16,16 +16,14 @@
  *                                                                              *
  ********************************************************************************/
 
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
 #ifdef __EMSCRIPTEN__
 #include <emscripten/emscripten.h>
 #endif
 
 #include "SDL.h"
 
+#include "testyuv_cvt.h"
+
 #define MOOSEPIC_W 64
 #define MOOSEPIC_H 88
 
@@ -149,7 +147,6 @@ SDL_Renderer *renderer;
 int paused = 0;
 int i;
 SDL_bool done = SDL_FALSE;
-Uint32 pixel_format = SDL_PIXELFORMAT_YV12;
 static int fpsdelay;
 
 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
@@ -160,91 +157,6 @@ quit(int rc)
     exit(rc);
 }
 
-/* All RGB2YUV conversion code and some other parts of code has been taken from testoverlay.c */
-
-/* NOTE: These RGB conversion functions are not intended for speed,
-         only as examples.
-*/
-
-void
-RGBtoYUV(Uint8 * rgb, int *yuv, int monochrome, int luminance)
-{
-    if (monochrome) {
-#if 1                           /* these are the two formulas that I found on the FourCC site... */
-        yuv[0] = (int)(0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]);
-        yuv[1] = 128;
-        yuv[2] = 128;
-#else
-        yuv[0] = (int)(0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
-        yuv[1] = 128;
-        yuv[2] = 128;
-#endif
-    } else {
-#if 1                           /* these are the two formulas that I found on the FourCC site... */
-        yuv[0] = (int)(0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]);
-        yuv[1] = (int)((rgb[2] - yuv[0]) * 0.565 + 128);
-        yuv[2] = (int)((rgb[0] - yuv[0]) * 0.713 + 128);
-#else
-        yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
-        yuv[1] = 128 - (0.148 * rgb[0]) - (0.291 * rgb[1]) + (0.439 * rgb[2]);
-        yuv[2] = 128 + (0.439 * rgb[0]) - (0.368 * rgb[1]) - (0.071 * rgb[2]);
-#endif
-    }
-
-    if (luminance != 100) {
-        yuv[0] = yuv[0] * luminance / 100;
-        if (yuv[0] > 255)
-            yuv[0] = 255;
-    }
-}
-
-void
-ConvertRGBtoYV12(Uint8 *rgb, Uint8 *out, int w, int h,
-                 int monochrome, int luminance)
-{
-    int x, y;
-    int yuv[3];
-    Uint8 *op[3];
-
-    op[0] = out;
-    op[1] = op[0] + w*h;
-    op[2] = op[1] + w*h/4;
-    for (y = 0; y < h; ++y) {
-        for (x = 0; x < w; ++x) {
-            RGBtoYUV(rgb, yuv, monochrome, luminance);
-            *(op[0]++) = yuv[0];
-            if (x % 2 == 0 && y % 2 == 0) {
-                *(op[1]++) = yuv[2];
-                *(op[2]++) = yuv[1];
-            }
-            rgb += 3;
-        }
-    }
-}
-
-void
-ConvertRGBtoNV12(Uint8 *rgb, Uint8 *out, int w, int h,
-                 int monochrome, int luminance)
-{
-    int x, y;
-    int yuv[3];
-    Uint8 *op[2];
-
-    op[0] = out;
-    op[1] = op[0] + w*h;
-    for (y = 0; y < h; ++y) {
-        for (x = 0; x < w; ++x) {
-            RGBtoYUV(rgb, yuv, monochrome, luminance);
-            *(op[0]++) = yuv[0];
-            if (x % 2 == 0 && y % 2 == 0) {
-                *(op[1]++) = yuv[1];
-                *(op[1]++) = yuv[2];
-            }
-            rgb += 3;
-        }
-    }
-}
-
 static void
 PrintUsage(char *argv0)
 {
@@ -307,7 +219,7 @@ loop()
     if (!paused) {
         i = (i + 1) % MOOSEFRAMES_COUNT;
 
-        SDL_UpdateTexture(MooseTexture, NULL, MooseFrame[i], MOOSEPIC_W*SDL_BYTESPERPIXEL(pixel_format));
+        SDL_UpdateTexture(MooseTexture, NULL, MooseFrame[i], MOOSEPIC_W);
     }
     SDL_RenderClear(renderer);
     SDL_RenderCopy(renderer, MooseTexture, NULL, &displayrect);
@@ -329,11 +241,6 @@ main(int argc, char **argv)
     int j;
     int fps = 12;
     int nodelay = 0;
-#ifdef TEST_NV12
-    Uint32 pixel_format = SDL_PIXELFORMAT_NV12;
-#else
-    Uint32 pixel_format = SDL_PIXELFORMAT_YV12;
-#endif
     int scale = 5;
 
     /* Enable standard application logging */
@@ -347,7 +254,7 @@ main(int argc, char **argv)
     while (argc > 1) {
         if (strcmp(argv[1], "-fps") == 0) {
             if (argv[2]) {
-                fps = atoi(argv[2]);
+                fps = SDL_atoi(argv[2]);
                 if (fps == 0) {
                     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                             "The -fps option requires an argument [from 1 to 1000], default is 12.\n");
@@ -371,7 +278,7 @@ main(int argc, char **argv)
             argc -= 1;
         } else if (strcmp(argv[1], "-scale") == 0) {
             if (argv[2]) {
-                scale = atoi(argv[2]);
+                scale = SDL_atoi(argv[2]);
                 if (scale == 0) {
                     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                             "The -scale option requires an argument [from 1 to 50], default is 5.\n");
@@ -439,7 +346,7 @@ main(int argc, char **argv)
         quit(4);
     }
 
-    MooseTexture = SDL_CreateTexture(renderer, pixel_format, SDL_TEXTUREACCESS_STREAMING, MOOSEPIC_W, MOOSEPIC_H);
+    MooseTexture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING, MOOSEPIC_W, MOOSEPIC_H);
     if (!MooseTexture) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
         free(RawMooseData);
@@ -461,17 +368,9 @@ main(int argc, char **argv)
             rgb[2] = MooseColors[frame[j]].b;
             rgb += 3;
         }
-        switch (pixel_format) {
-        case SDL_PIXELFORMAT_YV12:
-            ConvertRGBtoYV12(MooseFrameRGB, MooseFrame[i], MOOSEPIC_W, MOOSEPIC_H, 0, 100);
-            break;
-        case SDL_PIXELFORMAT_NV12:
-            ConvertRGBtoNV12(MooseFrameRGB, MooseFrame[i], MOOSEPIC_W, MOOSEPIC_H, 0, 100);
-            break;
-        default:
-            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unsupported pixel format\n");
-            break;
-        }
+        ConvertRGBtoYUV(SDL_PIXELFORMAT_YV12, MooseFrameRGB, MOOSEPIC_W*3, MooseFrame[i], MOOSEPIC_W, MOOSEPIC_H,
+            SDL_GetYUVConversionModeForResolution(MOOSEPIC_W, MOOSEPIC_H),
+            0, 100);
     }
 
     free(RawMooseData);
diff --git a/libs/SDL2/test/testplatform.c b/libs/SDL2/test/testplatform.c
index 0cba8fe7..1c1d2dcd 100644
--- a/libs/SDL2/test/testplatform.c
+++ b/libs/SDL2/test/testplatform.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -380,6 +380,7 @@ TestCPUInfo(SDL_bool verbose)
         SDL_Log("SSE4.2 %s\n", SDL_HasSSE42()? "detected" : "not detected");
         SDL_Log("AVX %s\n", SDL_HasAVX()? "detected" : "not detected");
         SDL_Log("AVX2 %s\n", SDL_HasAVX2()? "detected" : "not detected");
+        SDL_Log("AVX-512F %s\n", SDL_HasAVX512F()? "detected" : "not detected");
         SDL_Log("NEON %s\n", SDL_HasNEON()? "detected" : "not detected");
         SDL_Log("System RAM %d MB\n", SDL_GetSystemRAM());
     }
diff --git a/libs/SDL2/test/testpower.c b/libs/SDL2/test/testpower.c
index 48d64f09..adb58832 100644
--- a/libs/SDL2/test/testpower.c
+++ b/libs/SDL2/test/testpower.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testqsort.c b/libs/SDL2/test/testqsort.c
index 88675393..e83b0731 100644
--- a/libs/SDL2/test/testqsort.c
+++ b/libs/SDL2/test/testqsort.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testrelative.c b/libs/SDL2/test/testrelative.c
index 5d2ab5d9..816329ff 100644
--- a/libs/SDL2/test/testrelative.c
+++ b/libs/SDL2/test/testrelative.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testrendercopyex.c b/libs/SDL2/test/testrendercopyex.c
index 72a54e64..209a3515 100644
--- a/libs/SDL2/test/testrendercopyex.c
+++ b/libs/SDL2/test/testrendercopyex.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testrendertarget.c b/libs/SDL2/test/testrendertarget.c
index ec21f2e4..7d24d8ae 100644
--- a/libs/SDL2/test/testrendertarget.c
+++ b/libs/SDL2/test/testrendertarget.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testresample.c b/libs/SDL2/test/testresample.c
index a54a47dc..4234d9e4 100644
--- a/libs/SDL2/test/testresample.c
+++ b/libs/SDL2/test/testresample.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -93,7 +93,7 @@ main(int argc, char **argv)
     SDL_WriteLE32(io, 0x45564157);      /* WAVE */
     SDL_WriteLE32(io, 0x20746D66);      /* fmt */
     SDL_WriteLE32(io, 16);      /* chunk size */
-    SDL_WriteLE16(io, 1);       /* uncompressed */
+    SDL_WriteLE16(io, SDL_AUDIO_ISFLOAT(spec.format) ? 3 : 1);       /* uncompressed */
     SDL_WriteLE16(io, cvtchans);   /* channels */
     SDL_WriteLE32(io, cvtfreq); /* sample rate */
     SDL_WriteLE32(io, avgbytes);        /* average bytes per second */
diff --git a/libs/SDL2/test/testrumble.c b/libs/SDL2/test/testrumble.c
index a22c52ec..908a6aaf 100644
--- a/libs/SDL2/test/testrumble.c
+++ b/libs/SDL2/test/testrumble.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testscale.c b/libs/SDL2/test/testscale.c
index 34451d6f..e1b46fcc 100644
--- a/libs/SDL2/test/testscale.c
+++ b/libs/SDL2/test/testscale.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testsem.c b/libs/SDL2/test/testsem.c
index 13438b1b..884763e6 100644
--- a/libs/SDL2/test/testsem.c
+++ b/libs/SDL2/test/testsem.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testsensor.c b/libs/SDL2/test/testsensor.c
new file mode 100644
index 00000000..00bfd137
--- /dev/null
+++ b/libs/SDL2/test/testsensor.c
@@ -0,0 +1,117 @@
+/*
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+/* Simple test of the SDL sensor code */
+
+#include "SDL.h"
+
+static const char *GetSensorTypeString(SDL_SensorType type)
+{
+    static char unknown_type[64];
+
+    switch (type)
+    {
+    case SDL_SENSOR_INVALID:
+        return "SDL_SENSOR_INVALID";
+    case SDL_SENSOR_UNKNOWN:
+        return "SDL_SENSOR_UNKNOWN";
+    case SDL_SENSOR_ACCEL:
+        return "SDL_SENSOR_ACCEL";
+    case SDL_SENSOR_GYRO:
+        return "SDL_SENSOR_GYRO";
+    default:
+        SDL_snprintf(unknown_type, sizeof(unknown_type), "UNKNOWN (%d)", type);
+        return unknown_type;
+    }
+}
+
+static void HandleSensorEvent(SDL_SensorEvent *event)
+{
+    SDL_Sensor *sensor = SDL_SensorFromInstanceID(event->which);
+    if (!sensor) {
+        SDL_Log("Couldn't get sensor for sensor event\n");
+        return;
+    }
+
+    switch (SDL_SensorGetType(sensor)) {
+    case SDL_SENSOR_ACCEL:
+        SDL_Log("Accelerometer update: %.2f, %.2f, %.2f\n", event->data[0], event->data[1], event->data[2]);
+        break;
+    case SDL_SENSOR_GYRO:
+        SDL_Log("Gyro update: %.2f, %.2f, %.2f\n", event->data[0], event->data[1], event->data[2]);
+        break;
+    default:
+        SDL_Log("Sensor update for sensor type %s\n", GetSensorTypeString(SDL_SensorGetType(sensor)));
+        break;
+    }
+}
+
+int
+main(int argc, char **argv)
+{
+    int i;
+    int num_sensors, num_opened;
+
+    /* Load the SDL library */
+    if (SDL_Init(SDL_INIT_SENSOR) < 0) {
+        SDL_Log("Couldn't initialize SDL: %s\n", SDL_GetError());
+        return (1);
+    }
+
+    num_sensors = SDL_NumSensors();
+    num_opened = 0;
+
+    SDL_Log("There are %d sensors available\n", num_sensors);
+    for (i = 0; i < num_sensors; ++i) {
+        SDL_Log("Sensor %d: %s, type %s, platform type %d\n",
+            SDL_SensorGetDeviceInstanceID(i),
+            SDL_SensorGetDeviceName(i),
+            GetSensorTypeString(SDL_SensorGetDeviceType(i)),
+            SDL_SensorGetDeviceNonPortableType(i));
+
+        if (SDL_SensorGetDeviceType(i) != SDL_SENSOR_UNKNOWN) {
+            SDL_Sensor *sensor = SDL_SensorOpen(i);
+            if (sensor == NULL) {
+                SDL_Log("Couldn't open sensor %d: %s\n", SDL_SensorGetDeviceInstanceID(i), SDL_GetError());
+            } else {
+                ++num_opened;
+            }
+        }
+    }
+    SDL_Log("Opened %d sensors\n", num_opened);
+
+    if (num_opened > 0) {
+        SDL_bool done = SDL_FALSE;
+        SDL_Event event;
+
+        SDL_CreateWindow("Sensor Test", 0, 0, 0, 0, SDL_WINDOW_FULLSCREEN_DESKTOP);
+        while (!done) {
+            while (SDL_PollEvent(&event) > 0) {
+                switch (event.type) {
+                case SDL_SENSORUPDATE:
+                    HandleSensorEvent(&event.sensor);
+                    break;
+                case SDL_MOUSEBUTTONUP:
+                case SDL_KEYUP:
+                case SDL_QUIT:
+                    done = SDL_TRUE;
+                    break;
+                default:
+                    break;
+                }
+            }
+        }
+    }
+
+    SDL_Quit();
+    return (0);
+}
diff --git a/libs/SDL2/test/testshader.c b/libs/SDL2/test/testshader.c
index 1700da1c..ee0ccdad 100644
--- a/libs/SDL2/test/testshader.c
+++ b/libs/SDL2/test/testshader.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testshape.c b/libs/SDL2/test/testshape.c
index d54cc226..7e451e66 100644
--- a/libs/SDL2/test/testshape.c
+++ b/libs/SDL2/test/testshape.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testsprite2.c b/libs/SDL2/test/testsprite2.c
index 14258f74..b0348f85 100644
--- a/libs/SDL2/test/testsprite2.c
+++ b/libs/SDL2/test/testsprite2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testspriteminimal.c b/libs/SDL2/test/testspriteminimal.c
index 478c5849..92560002 100644
--- a/libs/SDL2/test/testspriteminimal.c
+++ b/libs/SDL2/test/testspriteminimal.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/teststreaming.c b/libs/SDL2/test/teststreaming.c
index 76a9fed1..7ec68910 100644
--- a/libs/SDL2/test/teststreaming.c
+++ b/libs/SDL2/test/teststreaming.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testthread.c b/libs/SDL2/test/testthread.c
index 6557b2fc..4555a1e9 100644
--- a/libs/SDL2/test/testthread.c
+++ b/libs/SDL2/test/testthread.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -20,6 +20,7 @@
 
 static SDL_TLSID tls;
 static int alive = 0;
+static int testprio = 0;
 
 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
 static void
@@ -29,14 +30,37 @@ quit(int rc)
     exit(rc);
 }
 
+static const char *
+getprioritystr(SDL_ThreadPriority priority)
+{
+    switch(priority)
+    {
+    case SDL_THREAD_PRIORITY_LOW: return "SDL_THREAD_PRIORITY_LOW";
+    case SDL_THREAD_PRIORITY_NORMAL: return "SDL_THREAD_PRIORITY_NORMAL";
+    case SDL_THREAD_PRIORITY_HIGH: return "SDL_THREAD_PRIORITY_HIGH";
+    case SDL_THREAD_PRIORITY_TIME_CRITICAL: return "SDL_THREAD_PRIORITY_TIME_CRITICAL";
+    }
+
+    return "???";
+}
+
 int SDLCALL
 ThreadFunc(void *data)
 {
+    SDL_ThreadPriority prio = SDL_THREAD_PRIORITY_NORMAL;
+
     SDL_TLSSet(tls, "baby thread", NULL);
     SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
            (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
     while (alive) {
         SDL_Log("Thread '%s' is alive!\n", (char *) data);
+
+        if (testprio) {
+            SDL_Log("SDL_SetThreadPriority(%s):%d\n", getprioritystr(prio), SDL_SetThreadPriority(prio));
+            if (++prio > SDL_THREAD_PRIORITY_TIME_CRITICAL)
+                prio = SDL_THREAD_PRIORITY_LOW;
+        }
+
         SDL_Delay(1 * 1000);
     }
     SDL_Log("Thread '%s' exiting!\n", (char *) data);
@@ -55,6 +79,7 @@ killed(int sig)
 int
 main(int argc, char *argv[])
 {
+    int arg = 1;
     SDL_Thread *thread;
 
     /* Enable standard application logging */
@@ -66,6 +91,13 @@ main(int argc, char *argv[])
         return (1);
     }
 
+    while (argv[arg] && *argv[arg] == '-') {
+        if (SDL_strcmp(argv[arg], "--prio") == 0) {
+            testprio = 1;
+        }
+        ++arg;
+    }
+
     tls = SDL_TLSCreate();
     SDL_assert(tls);
     SDL_TLSSet(tls, "main thread", NULL);
diff --git a/libs/SDL2/test/testtimer.c b/libs/SDL2/test/testtimer.c
index 261497be..34764c1c 100644
--- a/libs/SDL2/test/testtimer.c
+++ b/libs/SDL2/test/testtimer.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testver.c b/libs/SDL2/test/testver.c
index 04a7a901..1ae00834 100644
--- a/libs/SDL2/test/testver.c
+++ b/libs/SDL2/test/testver.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testviewport.c b/libs/SDL2/test/testviewport.c
index f9d0bd5a..4b8d20e7 100644
--- a/libs/SDL2/test/testviewport.c
+++ b/libs/SDL2/test/testviewport.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/test/testvulkan.c b/libs/SDL2/test/testvulkan.c
index 95cbec80..cd682af1 100644
--- a/libs/SDL2/test/testvulkan.c
+++ b/libs/SDL2/test/testvulkan.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -255,7 +255,7 @@ static void createInstance(void)
     appInfo.apiVersion = VK_API_VERSION_1_0;
     instanceCreateInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
     instanceCreateInfo.pApplicationInfo = &appInfo;
-    if(!SDL_Vulkan_GetInstanceExtensions(state->windows[0], &extensionCount, NULL))
+    if(!SDL_Vulkan_GetInstanceExtensions(NULL, &extensionCount, NULL))
     {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                      "SDL_Vulkan_GetInstanceExtensions(): %s\n",
@@ -268,7 +268,7 @@ static void createInstance(void)
         SDL_OutOfMemory();
         quit(2);
     }
-    if(!SDL_Vulkan_GetInstanceExtensions(state->windows[0], &extensionCount, extensions))
+    if(!SDL_Vulkan_GetInstanceExtensions(NULL, &extensionCount, extensions))
     {
         SDL_free((void*)extensions);
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
diff --git a/libs/SDL2/test/testwm2.c b/libs/SDL2/test/testwm2.c
index ab3eea2f..5da38730 100644
--- a/libs/SDL2/test/testwm2.c
+++ b/libs/SDL2/test/testwm2.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -146,6 +146,9 @@ main(int argc, char *argv[])
         quit(2);
     }
 
+    SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
+    SDL_EventState(SDL_DROPTEXT, SDL_ENABLE);
+
     for (i = 0; i < state->num_windows; ++i) {
         SDL_Renderer *renderer = state->renderers[i];
         SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
diff --git a/libs/SDL2/test/testyuv.bmp b/libs/SDL2/test/testyuv.bmp
new file mode 100644
index 00000000..af32034b
Binary files /dev/null and b/libs/SDL2/test/testyuv.bmp differ
diff --git a/libs/SDL2/test/testyuv.c b/libs/SDL2/test/testyuv.c
new file mode 100644
index 00000000..f52ab9f7
--- /dev/null
+++ b/libs/SDL2/test/testyuv.c
@@ -0,0 +1,455 @@
+/*
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "SDL.h"
+#include "SDL_test_font.h"
+#include "testyuv_cvt.h"
+
+
+/* 422 (YUY2, etc) formats are the largest */
+#define MAX_YUV_SURFACE_SIZE(W, H, P)  (H*4*(W+P+1)/2)
+
+
+/* Return true if the YUV format is packed pixels */
+static SDL_bool is_packed_yuv_format(Uint32 format)
+{
+    return (format == SDL_PIXELFORMAT_YUY2 ||
+            format == SDL_PIXELFORMAT_UYVY ||
+            format == SDL_PIXELFORMAT_YVYU);
+}
+
+/* Create a surface with a good pattern for verifying YUV conversion */
+static SDL_Surface *generate_test_pattern(int pattern_size)
+{
+    SDL_Surface *pattern = SDL_CreateRGBSurfaceWithFormat(0, pattern_size, pattern_size, 0, SDL_PIXELFORMAT_RGB24);
+
+    if (pattern) {
+        int i, x, y;
+        Uint8 *p, c;
+        const int thickness = 2;    /* Important so 2x2 blocks of color are the same, to avoid Cr/Cb interpolation over pixels */
+
+        /* R, G, B in alternating horizontal bands */
+        for (y = 0; y < pattern->h; y += thickness) {
+            for (i = 0; i < thickness; ++i) {
+                p = (Uint8 *)pattern->pixels + (y + i) * pattern->pitch + ((y/thickness) % 3);
+                for (x = 0; x < pattern->w; ++x) {
+                    *p = 0xFF;
+                    p += 3;
+                }
+            }
+        }
+
+        /* Black and white in alternating vertical bands */
+        c = 0xFF;
+        for (x = 1*thickness; x < pattern->w; x += 2*thickness) {
+            for (i = 0; i < thickness; ++i) {
+                p = (Uint8 *)pattern->pixels + (x + i)*3;
+                for (y = 0; y < pattern->h; ++y) {
+                    SDL_memset(p, c, 3);
+                    p += pattern->pitch;
+                }
+            }
+            if (c) {
+                c = 0x00;
+            } else {
+                c = 0xFF;
+            }
+        }
+    }
+    return pattern;
+}
+
+static SDL_bool verify_yuv_data(Uint32 format, const Uint8 *yuv, int yuv_pitch, SDL_Surface *surface)
+{
+    const int tolerance = 20;
+    const int size = (surface->h * surface->pitch);
+    Uint8 *rgb;
+    SDL_bool result = SDL_FALSE;
+
+    rgb = (Uint8 *)SDL_malloc(size);
+    if (!rgb) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory");
+        return SDL_FALSE;
+    }
+
+    if (SDL_ConvertPixels(surface->w, surface->h, format, yuv, yuv_pitch, surface->format->format, rgb, surface->pitch) == 0) {
+        int x, y;
+        result = SDL_TRUE;
+        for (y = 0; y < surface->h; ++y) {
+            const Uint8 *actual = rgb + y * surface->pitch;
+            const Uint8 *expected = (const Uint8 *)surface->pixels + y * surface->pitch;
+            for (x = 0; x < surface->w; ++x) {
+                int deltaR = (int)actual[0] - expected[0];
+                int deltaG = (int)actual[1] - expected[1];
+                int deltaB = (int)actual[2] - expected[2];
+                int distance = (deltaR * deltaR + deltaG * deltaG + deltaB * deltaB);
+                if (distance > tolerance) {
+                    SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Pixel at %d,%d was 0x%.2x,0x%.2x,0x%.2x, expected 0x%.2x,0x%.2x,0x%.2x, distance = %d\n", x, y, actual[0], actual[1], actual[2], expected[0], expected[1], expected[2], distance);
+                    result = SDL_FALSE;
+                }
+                actual += 3;
+                expected += 3;
+            }
+        }
+    } else {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(format), SDL_GetPixelFormatName(surface->format->format), SDL_GetError());
+    }
+    SDL_free(rgb);
+
+    return result;
+}
+
+static int run_automated_tests(int pattern_size, int extra_pitch)
+{
+    const Uint32 formats[] = {
+        SDL_PIXELFORMAT_YV12,
+        SDL_PIXELFORMAT_IYUV,
+        SDL_PIXELFORMAT_NV12,
+        SDL_PIXELFORMAT_NV21,
+        SDL_PIXELFORMAT_YUY2,
+        SDL_PIXELFORMAT_UYVY,
+        SDL_PIXELFORMAT_YVYU
+    };
+    int i, j;
+    SDL_Surface *pattern = generate_test_pattern(pattern_size);
+    const int yuv_len = MAX_YUV_SURFACE_SIZE(pattern->w, pattern->h, extra_pitch);
+    Uint8 *yuv1 = (Uint8 *)SDL_malloc(yuv_len);
+    Uint8 *yuv2 = (Uint8 *)SDL_malloc(yuv_len);
+    int yuv1_pitch, yuv2_pitch;
+    int result = -1;
+    
+    if (!pattern || !yuv1 || !yuv2) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't allocate test surfaces");
+        goto done;
+    }
+
+    /* Verify conversion from YUV formats */
+    for (i = 0; i < SDL_arraysize(formats); ++i) {
+        if (!ConvertRGBtoYUV(formats[i], pattern->pixels, pattern->pitch, yuv1, pattern->w, pattern->h, SDL_GetYUVConversionModeForResolution(pattern->w, pattern->h), 0, 100)) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "ConvertRGBtoYUV() doesn't support converting to %s\n", SDL_GetPixelFormatName(formats[i]));
+            goto done;
+        }
+        yuv1_pitch = CalculateYUVPitch(formats[i], pattern->w);
+        if (!verify_yuv_data(formats[i], yuv1, yuv1_pitch, pattern)) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed conversion from %s to RGB\n", SDL_GetPixelFormatName(formats[i]));
+            goto done;
+        }
+    }
+
+    /* Verify conversion to YUV formats */
+    for (i = 0; i < SDL_arraysize(formats); ++i) {
+        yuv1_pitch = CalculateYUVPitch(formats[i], pattern->w) + extra_pitch;
+        if (SDL_ConvertPixels(pattern->w, pattern->h, pattern->format->format, pattern->pixels, pattern->pitch, formats[i], yuv1, yuv1_pitch) < 0) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(pattern->format->format), SDL_GetPixelFormatName(formats[i]), SDL_GetError());
+            goto done;
+        }
+        if (!verify_yuv_data(formats[i], yuv1, yuv1_pitch, pattern)) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed conversion from RGB to %s\n", SDL_GetPixelFormatName(formats[i]));
+            goto done;
+        }
+    }
+
+    /* Verify conversion between YUV formats */
+    for (i = 0; i < SDL_arraysize(formats); ++i) {
+        for (j = 0; j < SDL_arraysize(formats); ++j) {
+            yuv1_pitch = CalculateYUVPitch(formats[i], pattern->w) + extra_pitch;
+            yuv2_pitch = CalculateYUVPitch(formats[j], pattern->w) + extra_pitch;
+            if (SDL_ConvertPixels(pattern->w, pattern->h, pattern->format->format, pattern->pixels, pattern->pitch, formats[i], yuv1, yuv1_pitch) < 0) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(pattern->format->format), SDL_GetPixelFormatName(formats[i]), SDL_GetError());
+                goto done;
+            }
+            if (SDL_ConvertPixels(pattern->w, pattern->h, formats[i], yuv1, yuv1_pitch, formats[j], yuv2, yuv2_pitch) < 0) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(formats[i]), SDL_GetPixelFormatName(formats[j]), SDL_GetError());
+                goto done;
+            }
+            if (!verify_yuv_data(formats[j], yuv2, yuv2_pitch, pattern)) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed conversion from %s to %s\n", SDL_GetPixelFormatName(formats[i]), SDL_GetPixelFormatName(formats[j]));
+                goto done;
+            }
+        }
+    }
+
+    /* Verify conversion between YUV formats in-place */
+    for (i = 0; i < SDL_arraysize(formats); ++i) {
+        for (j = 0; j < SDL_arraysize(formats); ++j) {
+            if (is_packed_yuv_format(formats[i]) != is_packed_yuv_format(formats[j])) {
+                /* Can't change plane vs packed pixel layout in-place */
+                continue;
+            }
+
+            yuv1_pitch = CalculateYUVPitch(formats[i], pattern->w) + extra_pitch;
+            yuv2_pitch = CalculateYUVPitch(formats[j], pattern->w) + extra_pitch;
+            if (SDL_ConvertPixels(pattern->w, pattern->h, pattern->format->format, pattern->pixels, pattern->pitch, formats[i], yuv1, yuv1_pitch) < 0) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(pattern->format->format), SDL_GetPixelFormatName(formats[i]), SDL_GetError());
+                goto done;
+            }
+            if (SDL_ConvertPixels(pattern->w, pattern->h, formats[i], yuv1, yuv1_pitch, formats[j], yuv1, yuv2_pitch) < 0) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't convert %s to %s: %s\n", SDL_GetPixelFormatName(formats[i]), SDL_GetPixelFormatName(formats[j]), SDL_GetError());
+                goto done;
+            }
+            if (!verify_yuv_data(formats[j], yuv1, yuv2_pitch, pattern)) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed conversion from %s to %s\n", SDL_GetPixelFormatName(formats[i]), SDL_GetPixelFormatName(formats[j]));
+                goto done;
+            }
+        }
+    }
+
+
+    result = 0;
+
+done:
+    SDL_free(yuv1);
+    SDL_free(yuv2);
+    SDL_FreeSurface(pattern);
+    return result;
+}
+
+int
+main(int argc, char **argv)
+{
+    struct {
+        SDL_bool enable_intrinsics;
+        int pattern_size;
+        int extra_pitch;
+    } automated_test_params[] = {
+        /* Test: even width and height */
+        { SDL_FALSE, 2, 0 },
+        { SDL_FALSE, 4, 0 },
+        /* Test: odd width and height */
+        { SDL_FALSE, 1, 0 },
+        { SDL_FALSE, 3, 0 },
+        /* Test: even width and height, extra pitch */
+        { SDL_FALSE, 2, 3 },
+        { SDL_FALSE, 4, 3 },
+        /* Test: odd width and height, extra pitch */
+        { SDL_FALSE, 1, 3 },
+        { SDL_FALSE, 3, 3 },
+        /* Test: even width and height with intrinsics */
+        { SDL_TRUE, 32, 0 },
+        /* Test: odd width and height with intrinsics */
+        { SDL_TRUE, 33, 0 },
+        { SDL_TRUE, 37, 0 },
+        /* Test: even width and height with intrinsics, extra pitch */
+        { SDL_TRUE, 32, 3 },
+        /* Test: odd width and height with intrinsics, extra pitch */
+        { SDL_TRUE, 33, 3 },
+        { SDL_TRUE, 37, 3 },
+    };
+    int arg = 1;
+    const char *filename;
+    SDL_Surface *original;
+    SDL_Surface *converted;
+    SDL_Window *window;
+    SDL_Renderer *renderer;
+    SDL_Texture *output[3];
+    const char *titles[3] = { "ORIGINAL", "SOFTWARE", "HARDWARE" };
+    char title[128];
+    const char *yuv_name;
+    const char *yuv_mode;
+    Uint32 rgb_format = SDL_PIXELFORMAT_RGBX8888;
+    Uint32 yuv_format = SDL_PIXELFORMAT_YV12;
+    int current = 0;
+    int pitch;
+    Uint8 *raw_yuv;
+    Uint32 then, now, i, iterations = 100;
+    SDL_bool should_run_automated_tests = SDL_FALSE;
+
+    while (argv[arg] && *argv[arg] == '-') {
+        if (SDL_strcmp(argv[arg], "--jpeg") == 0) {
+            SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_JPEG);
+        } else if (SDL_strcmp(argv[arg], "--bt601") == 0) {
+            SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_BT601);
+        } else if (SDL_strcmp(argv[arg], "--bt709") == 0) {
+            SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_BT709);
+        } else if (SDL_strcmp(argv[arg], "--auto") == 0) {
+            SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_AUTOMATIC);
+        } else if (SDL_strcmp(argv[arg], "--yv12") == 0) {
+            yuv_format = SDL_PIXELFORMAT_YV12;
+        } else if (SDL_strcmp(argv[arg], "--iyuv") == 0) {
+            yuv_format = SDL_PIXELFORMAT_IYUV;
+        } else if (SDL_strcmp(argv[arg], "--yuy2") == 0) {
+            yuv_format = SDL_PIXELFORMAT_YUY2;
+        } else if (SDL_strcmp(argv[arg], "--uyvy") == 0) {
+            yuv_format = SDL_PIXELFORMAT_UYVY;
+        } else if (SDL_strcmp(argv[arg], "--yvyu") == 0) {
+            yuv_format = SDL_PIXELFORMAT_YVYU;
+        } else if (SDL_strcmp(argv[arg], "--nv12") == 0) {
+            yuv_format = SDL_PIXELFORMAT_NV12;
+        } else if (SDL_strcmp(argv[arg], "--nv21") == 0) {
+            yuv_format = SDL_PIXELFORMAT_NV21;
+        } else if (SDL_strcmp(argv[arg], "--rgb555") == 0) {
+            rgb_format = SDL_PIXELFORMAT_RGB555;
+        } else if (SDL_strcmp(argv[arg], "--rgb565") == 0) {
+            rgb_format = SDL_PIXELFORMAT_RGB565;
+        } else if (SDL_strcmp(argv[arg], "--rgb24") == 0) {
+            rgb_format = SDL_PIXELFORMAT_RGB24;
+        } else if (SDL_strcmp(argv[arg], "--argb") == 0) {
+            rgb_format = SDL_PIXELFORMAT_ARGB8888;
+        } else if (SDL_strcmp(argv[arg], "--abgr") == 0) {
+            rgb_format = SDL_PIXELFORMAT_ABGR8888;
+        } else if (SDL_strcmp(argv[arg], "--rgba") == 0) {
+            rgb_format = SDL_PIXELFORMAT_RGBA8888;
+        } else if (SDL_strcmp(argv[arg], "--bgra") == 0) {
+            rgb_format = SDL_PIXELFORMAT_BGRA8888;
+        } else if (SDL_strcmp(argv[arg], "--automated") == 0) {
+            should_run_automated_tests = SDL_TRUE;
+        } else {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Usage: %s [--jpeg|--bt601|-bt709|--auto] [--yv12|--iyuv|--yuy2|--uyvy|--yvyu|--nv12|--nv21] [--rgb555|--rgb565|--rgb24|--argb|--abgr|--rgba|--bgra] [image_filename]\n", argv[0]);
+            return 1;
+        }
+        ++arg;
+    }
+
+    /* Run automated tests */
+    if (should_run_automated_tests) {
+        for (i = 0; i < SDL_arraysize(automated_test_params); ++i) {
+            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Running automated test, pattern size %d, extra pitch %d, intrinsics %s\n", 
+                automated_test_params[i].pattern_size,
+                automated_test_params[i].extra_pitch,
+                automated_test_params[i].enable_intrinsics ? "enabled" : "disabled");
+            if (run_automated_tests(automated_test_params[i].pattern_size, automated_test_params[i].extra_pitch) < 0) {
+                return 2;
+            }
+        }
+        return 0;
+    }
+
+    if (argv[arg]) {
+        filename = argv[arg];
+    } else {
+        filename = "testyuv.bmp";
+    }
+    original = SDL_ConvertSurfaceFormat(SDL_LoadBMP(filename), SDL_PIXELFORMAT_RGB24, 0);
+    if (!original) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
+        return 3;
+    }
+
+    raw_yuv = SDL_calloc(1, MAX_YUV_SURFACE_SIZE(original->w, original->h, 0));
+    ConvertRGBtoYUV(yuv_format, original->pixels, original->pitch, raw_yuv, original->w, original->h,
+        SDL_GetYUVConversionModeForResolution(original->w, original->h),
+        0, 100);
+    pitch = CalculateYUVPitch(yuv_format, original->w);
+
+    converted = SDL_CreateRGBSurfaceWithFormat(0, original->w, original->h, 0, rgb_format);
+    if (!converted) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create converted surface: %s\n", SDL_GetError());
+        return 3;
+    }
+
+    then = SDL_GetTicks();
+    for ( i = 0; i < iterations; ++i ) {
+        SDL_ConvertPixels(original->w, original->h, yuv_format, raw_yuv, pitch, rgb_format, converted->pixels, converted->pitch);
+    }
+    now = SDL_GetTicks();
+    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "%d iterations in %d ms, %.2fms each\n", iterations, (now - then), (float)(now - then)/iterations);
+
+    window = SDL_CreateWindow("YUV test",
+                              SDL_WINDOWPOS_UNDEFINED,
+                              SDL_WINDOWPOS_UNDEFINED,
+                              original->w, original->h,
+                              0);
+    if (!window) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create window: %s\n", SDL_GetError());
+        return 4;
+    }
+
+    renderer = SDL_CreateRenderer(window, -1, 0);
+    if (!renderer) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());
+        return 4;
+    }
+
+    output[0] = SDL_CreateTextureFromSurface(renderer, original);
+    output[1] = SDL_CreateTextureFromSurface(renderer, converted);
+    output[2] = SDL_CreateTexture(renderer, yuv_format, SDL_TEXTUREACCESS_STREAMING, original->w, original->h);
+    if (!output[0] || !output[1] || !output[2]) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
+        return 5;
+    }
+    SDL_UpdateTexture(output[2], NULL, raw_yuv, pitch);
+    
+    yuv_name = SDL_GetPixelFormatName(yuv_format);
+    if (SDL_strncmp(yuv_name, "SDL_PIXELFORMAT_", 16) == 0) {
+        yuv_name += 16;
+    }
+
+    switch (SDL_GetYUVConversionModeForResolution(original->w, original->h)) {
+    case SDL_YUV_CONVERSION_JPEG:
+        yuv_mode = "JPEG";
+        break;
+    case SDL_YUV_CONVERSION_BT601:
+        yuv_mode = "BT.601";
+        break;
+    case SDL_YUV_CONVERSION_BT709:
+        yuv_mode = "BT.709";
+        break;
+    default:
+        yuv_mode = "UNKNOWN";
+        break;
+    }
+
+    { int done = 0;
+        while ( !done )
+        {
+            SDL_Event event;
+            while (SDL_PollEvent(&event) > 0) {
+                if (event.type == SDL_QUIT) {
+                    done = 1;
+                }
+                if (event.type == SDL_KEYDOWN) {
+                    if (event.key.keysym.sym == SDLK_ESCAPE) {
+                        done = 1;
+                    } else if (event.key.keysym.sym == SDLK_LEFT) {
+                        --current;
+                    } else if (event.key.keysym.sym == SDLK_RIGHT) {
+                        ++current;
+                    }
+                }
+                if (event.type == SDL_MOUSEBUTTONDOWN) {
+                    if (event.button.x < (original->w/2)) {
+                        --current;
+                    } else {
+                        ++current;
+                    }
+                }
+            }
+
+            /* Handle wrapping */
+            if (current < 0) {
+                current += SDL_arraysize(output);
+            }
+            if (current >= SDL_arraysize(output)) {
+                current -= SDL_arraysize(output);
+            }
+
+            SDL_RenderClear(renderer);
+            SDL_RenderCopy(renderer, output[current], NULL, NULL);
+            SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+            if (current == 0) {
+                SDLTest_DrawString(renderer, 4, 4, titles[current]);
+            } else {
+                SDL_snprintf(title, sizeof(title), "%s %s %s", titles[current], yuv_name, yuv_mode);
+                SDLTest_DrawString(renderer, 4, 4, title);
+            }
+            SDL_RenderPresent(renderer);
+            SDL_Delay(10);
+        }
+    }
+    SDL_Quit();
+    return 0;
+}
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/test/testyuv_cvt.c b/libs/SDL2/test/testyuv_cvt.c
new file mode 100644
index 00000000..553a3fa1
--- /dev/null
+++ b/libs/SDL2/test/testyuv_cvt.c
@@ -0,0 +1,300 @@
+/*
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+#include "SDL.h"
+
+#include "testyuv_cvt.h"
+
+
+static float clip3(float x, float y, float z)
+{
+    return ((z < x) ? x : ((z > y) ? y : z));
+}
+
+static void RGBtoYUV(Uint8 * rgb, int *yuv, SDL_YUV_CONVERSION_MODE mode, int monochrome, int luminance)
+{
+    if (mode == SDL_YUV_CONVERSION_JPEG) {
+        /* Full range YUV */
+        yuv[0] = (int)(0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]);
+        yuv[1] = (int)((rgb[2] - yuv[0]) * 0.565 + 128);
+        yuv[2] = (int)((rgb[0] - yuv[0]) * 0.713 + 128);
+    } else {
+        // This formula is from Microsoft's documentation:
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/dd206750(v=vs.85).aspx
+        // L = Kr * R + Kb * B + (1 - Kr - Kb) * G
+        // Y =                   floor(2^(M-8) * (219*(L-Z)/S + 16) + 0.5);
+        // U = clip3(0, (2^M)-1, floor(2^(M-8) * (112*(B-L) / ((1-Kb)*S) + 128) + 0.5));
+        // V = clip3(0, (2^M)-1, floor(2^(M-8) * (112*(R-L) / ((1-Kr)*S) + 128) + 0.5));
+        float S, Z, R, G, B, L, Kr, Kb, Y, U, V;
+
+        if (mode == SDL_YUV_CONVERSION_BT709) {
+            /* BT.709 */
+            Kr = 0.2126f;
+            Kb = 0.0722f;
+        } else {
+            /* BT.601 */
+            Kr = 0.299f;
+            Kb = 0.114f;
+        }
+
+        S = 255.0f;
+        Z = 0.0f;
+        R = rgb[0];
+        G = rgb[1];
+        B = rgb[2];
+        L = Kr * R + Kb * B + (1 - Kr - Kb) * G;
+        Y = (Uint8)SDL_floorf((219*(L-Z)/S + 16) + 0.5f);
+        U = (Uint8)clip3(0, 255, SDL_floorf((112.0f*(B-L) / ((1.0f-Kb)*S) + 128) + 0.5f));
+        V = (Uint8)clip3(0, 255, SDL_floorf((112.0f*(R-L) / ((1.0f-Kr)*S) + 128) + 0.5f));
+
+        yuv[0] = (Uint8)Y;
+        yuv[1] = (Uint8)U;
+        yuv[2] = (Uint8)V;
+    }
+
+    if (monochrome) {
+        yuv[1] = 128;
+        yuv[2] = 128;
+    }
+
+    if (luminance != 100) {
+        yuv[0] = yuv[0] * luminance / 100;
+        if (yuv[0] > 255)
+            yuv[0] = 255;
+    }
+}
+
+static void ConvertRGBtoPlanar2x2(Uint32 format, Uint8 *src, int pitch, Uint8 *out, int w, int h, SDL_YUV_CONVERSION_MODE mode, int monochrome, int luminance)
+{
+    int x, y;
+    int yuv[4][3];
+    Uint8 *Y1, *Y2, *U, *V;
+    Uint8 *rgb1, *rgb2;
+    int rgb_row_advance = (pitch - w*3) + pitch;
+    int UV_advance;
+
+    rgb1 = src;
+    rgb2 = src + pitch;
+
+    Y1 = out;
+    Y2 = Y1 + w;
+    switch (format) {
+    case SDL_PIXELFORMAT_YV12:
+        V = (Y1 + h * w);
+        U = V + ((h + 1)/2)*((w + 1)/2);
+        UV_advance = 1;
+        break;
+    case SDL_PIXELFORMAT_IYUV:
+        U = (Y1 + h * w);
+        V = U + ((h + 1)/2)*((w + 1)/2);
+        UV_advance = 1;
+        break;
+    case SDL_PIXELFORMAT_NV12:
+        U = (Y1 + h * w);
+        V = U + 1;
+        UV_advance = 2;
+        break;
+    case SDL_PIXELFORMAT_NV21:
+        V = (Y1 + h * w);
+        U = V + 1;
+        UV_advance = 2;
+        break;
+    default:
+        SDL_assert(!"Unsupported planar YUV format");
+        return;
+    }
+
+    for (y = 0; y < (h - 1); y += 2) {
+        for (x = 0; x < (w - 1); x += 2) {
+            RGBtoYUV(rgb1, yuv[0], mode, monochrome, luminance);
+            rgb1 += 3;
+            *Y1++ = (Uint8)yuv[0][0];
+
+            RGBtoYUV(rgb1, yuv[1], mode, monochrome, luminance);
+            rgb1 += 3;
+            *Y1++ = (Uint8)yuv[1][0];
+
+            RGBtoYUV(rgb2, yuv[2], mode, monochrome, luminance);
+            rgb2 += 3;
+            *Y2++ = (Uint8)yuv[2][0];
+
+            RGBtoYUV(rgb2, yuv[3], mode, monochrome, luminance);
+            rgb2 += 3;
+            *Y2++ = (Uint8)yuv[3][0];
+
+            *U = (Uint8)SDL_floorf((yuv[0][1] + yuv[1][1] + yuv[2][1] + yuv[3][1])/4.0f + 0.5f);
+            U += UV_advance;
+
+            *V = (Uint8)SDL_floorf((yuv[0][2] + yuv[1][2] + yuv[2][2] + yuv[3][2])/4.0f + 0.5f);
+            V += UV_advance;
+        }
+        /* Last column */
+        if (x == (w - 1)) {
+            RGBtoYUV(rgb1, yuv[0], mode, monochrome, luminance);
+            rgb1 += 3;
+            *Y1++ = (Uint8)yuv[0][0];
+
+            RGBtoYUV(rgb2, yuv[2], mode, monochrome, luminance);
+            rgb2 += 3;
+            *Y2++ = (Uint8)yuv[2][0];
+
+            *U = (Uint8)SDL_floorf((yuv[0][1] + yuv[2][1])/2.0f + 0.5f);
+            U += UV_advance;
+
+            *V = (Uint8)SDL_floorf((yuv[0][2] + yuv[2][2])/2.0f + 0.5f);
+            V += UV_advance;
+        }
+        Y1 += w;
+        Y2 += w;
+        rgb1 += rgb_row_advance;
+        rgb2 += rgb_row_advance;
+    }
+    /* Last row */
+    if (y == (h - 1)) {
+        for (x = 0; x < (w - 1); x += 2) {
+            RGBtoYUV(rgb1, yuv[0], mode, monochrome, luminance);
+            rgb1 += 3;
+            *Y1++ = (Uint8)yuv[0][0];
+
+            RGBtoYUV(rgb1, yuv[1], mode, monochrome, luminance);
+            rgb1 += 3;
+            *Y1++ = (Uint8)yuv[1][0];
+
+            *U = (Uint8)SDL_floorf((yuv[0][1] + yuv[1][1])/2.0f + 0.5f);
+            U += UV_advance;
+
+            *V = (Uint8)SDL_floorf((yuv[0][2] + yuv[1][2])/2.0f + 0.5f);
+            V += UV_advance;
+        }
+        /* Last column */
+        if (x == (w - 1)) {
+            RGBtoYUV(rgb1, yuv[0], mode, monochrome, luminance);
+            *Y1++ = (Uint8)yuv[0][0];
+
+            *U = (Uint8)yuv[0][1];
+            U += UV_advance;
+
+            *V = (Uint8)yuv[0][2];
+            V += UV_advance;
+        }
+    }
+}
+
+static void ConvertRGBtoPacked4(Uint32 format, Uint8 *src, int pitch, Uint8 *out, int w, int h, SDL_YUV_CONVERSION_MODE mode, int monochrome, int luminance)
+{
+    int x, y;
+    int yuv[2][3];
+    Uint8 *Y1, *Y2, *U, *V;
+    Uint8 *rgb;
+    int rgb_row_advance = (pitch - w*3);
+
+    rgb = src;
+
+    switch (format) {
+    case SDL_PIXELFORMAT_YUY2:
+        Y1 = out;
+        U = out+1;
+        Y2 = out+2;
+        V = out+3;
+        break;
+    case SDL_PIXELFORMAT_UYVY:
+        U = out;
+        Y1 = out+1;
+        V = out+2;
+        Y2 = out+3;
+        break;
+    case SDL_PIXELFORMAT_YVYU:
+        Y1 = out;
+        V = out+1;
+        Y2 = out+2;
+        U = out+3;
+        break;
+    default:
+        SDL_assert(!"Unsupported packed YUV format");
+        return;
+    }
+
+    for (y = 0; y < h; ++y) {
+        for (x = 0; x < (w - 1); x += 2) {
+            RGBtoYUV(rgb, yuv[0], mode, monochrome, luminance);
+            rgb += 3;
+            *Y1 = (Uint8)yuv[0][0];
+            Y1 += 4;
+
+            RGBtoYUV(rgb, yuv[1], mode, monochrome, luminance);
+            rgb += 3;
+            *Y2 = (Uint8)yuv[1][0];
+            Y2 += 4;
+
+            *U = (Uint8)SDL_floorf((yuv[0][1] + yuv[1][1])/2.0f + 0.5f);
+            U += 4;
+
+            *V = (Uint8)SDL_floorf((yuv[0][2] + yuv[1][2])/2.0f + 0.5f);
+            V += 4;
+        }
+        /* Last column */
+        if (x == (w - 1)) {
+            RGBtoYUV(rgb, yuv[0], mode, monochrome, luminance);
+            rgb += 3;
+            *Y2 = *Y1 = (Uint8)yuv[0][0];
+            Y1 += 4;
+            Y2 += 4;
+
+            *U = (Uint8)yuv[0][1];
+            U += 4;
+
+            *V = (Uint8)yuv[0][2];
+            V += 4;
+        }
+        rgb += rgb_row_advance;
+    }
+}
+
+SDL_bool ConvertRGBtoYUV(Uint32 format, Uint8 *src, int pitch, Uint8 *out, int w, int h, SDL_YUV_CONVERSION_MODE mode, int monochrome, int luminance)
+{
+    switch (format)
+    {
+    case SDL_PIXELFORMAT_YV12:
+    case SDL_PIXELFORMAT_IYUV:
+    case SDL_PIXELFORMAT_NV12:
+    case SDL_PIXELFORMAT_NV21:
+        ConvertRGBtoPlanar2x2(format, src, pitch, out, w, h, mode, monochrome, luminance);
+        return SDL_TRUE;
+    case SDL_PIXELFORMAT_YUY2:
+    case SDL_PIXELFORMAT_UYVY:
+    case SDL_PIXELFORMAT_YVYU:
+        ConvertRGBtoPacked4(format, src, pitch, out, w, h, mode, monochrome, luminance);
+        return SDL_TRUE;
+    default:
+        return SDL_FALSE;
+    }
+}
+
+int CalculateYUVPitch(Uint32 format, int width)
+{
+    switch (format)
+    {
+    case SDL_PIXELFORMAT_YV12:
+    case SDL_PIXELFORMAT_IYUV:
+    case SDL_PIXELFORMAT_NV12:
+    case SDL_PIXELFORMAT_NV21:
+        return width;
+    case SDL_PIXELFORMAT_YUY2:
+    case SDL_PIXELFORMAT_UYVY:
+    case SDL_PIXELFORMAT_YVYU:
+        return 4*((width + 1)/2);
+    default:
+        return 0;
+    }
+}
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/test/testyuv_cvt.h b/libs/SDL2/test/testyuv_cvt.h
new file mode 100644
index 00000000..bd845878
--- /dev/null
+++ b/libs/SDL2/test/testyuv_cvt.h
@@ -0,0 +1,16 @@
+/*
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+/* These functions are designed for testing correctness, not for speed */
+
+extern SDL_bool ConvertRGBtoYUV(Uint32 format, Uint8 *src, int pitch, Uint8 *out, int w, int h, SDL_YUV_CONVERSION_MODE mode, int monochrome, int luminance);
+extern int CalculateYUVPitch(Uint32 format, int width);
diff --git a/libs/SDL2/test/torturethread.c b/libs/SDL2/test/torturethread.c
index 4c2679b8..9b1a407e 100644
--- a/libs/SDL2/test/torturethread.c
+++ b/libs/SDL2/test/torturethread.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/bin/SDL2.dll b/libs/SDL2/x86_64-w64-mingw32/bin/SDL2.dll
index 6776cdd8..934f8091 100755
Binary files a/libs/SDL2/x86_64-w64-mingw32/bin/SDL2.dll and b/libs/SDL2/x86_64-w64-mingw32/bin/SDL2.dll differ
diff --git a/libs/SDL2/x86_64-w64-mingw32/bin/sdl2-config b/libs/SDL2/x86_64-w64-mingw32/bin/sdl2-config
index 34d3cb87..9809f600 100755
--- a/libs/SDL2/x86_64-w64-mingw32/bin/sdl2-config
+++ b/libs/SDL2/x86_64-w64-mingw32/bin/sdl2-config
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-prefix=/usr/local/x86_64-w64-mingw32
+prefix=/opt/local/x86_64-w64-mingw32
 exec_prefix=${prefix}
 exec_prefix_set=no
 libdir=${exec_prefix}/lib
@@ -39,17 +39,17 @@ while test $# -gt 0; do
       echo $exec_prefix
       ;;
     --version)
-      echo 2.0.7
+      echo 2.0.9
       ;;
     --cflags)
       echo -I${prefix}/include/SDL2  -Dmain=SDL_main
       ;;
     --libs)
-      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2  -mwindows
+      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2 -mwindows
       ;;
     --static-libs)
 #    --libs|--static-libs)
-      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2  -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -static-libgcc
+      echo -L${exec_prefix}/lib  -lmingw32 -lSDL2main -lSDL2 -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
       ;;
     *)
       echo "${usage}" 1>&2
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL.h
index 366d50fa..fc35a419 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,6 +51,7 @@
 #include "SDL_power.h"
 #include "SDL_render.h"
 #include "SDL_rwops.h"
+#include "SDL_sensor.h"
 #include "SDL_shape.h"
 #include "SDL_system.h"
 #include "SDL_thread.h"
@@ -80,10 +81,11 @@ extern "C" {
 #define SDL_INIT_HAPTIC         0x00001000u
 #define SDL_INIT_GAMECONTROLLER 0x00002000u  /**< SDL_INIT_GAMECONTROLLER implies SDL_INIT_JOYSTICK */
 #define SDL_INIT_EVENTS         0x00004000u
+#define SDL_INIT_SENSOR         0x00008000u
 #define SDL_INIT_NOPARACHUTE    0x00100000u  /**< compatibility; this flag is ignored. */
 #define SDL_INIT_EVERYTHING ( \
                 SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | \
-                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER \
+                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER | SDL_INIT_SENSOR \
             )
 /* @} */
 
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_assert.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_assert.h
index 90abbe39..b38f928a 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_assert.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_atomic.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_atomic.h
index 36e37f3b..b2287748 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_atomic.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_atomic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -158,6 +158,9 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
 #if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("lwsync" : : : "memory")
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("lwsync" : : : "memory")
+#elif defined(__GNUC__) && defined(__aarch64__)
+#define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
+#define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 #elif defined(__GNUC__) && defined(__arm__)
 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_audio.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_audio.h
index f119c2b2..d3e1bfac 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_audio.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_audio.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -140,7 +140,8 @@ typedef Uint16 SDL_AudioFormat;
 #define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE    0x00000001
 #define SDL_AUDIO_ALLOW_FORMAT_CHANGE       0x00000002
 #define SDL_AUDIO_ALLOW_CHANNELS_CHANGE     0x00000004
-#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE)
+#define SDL_AUDIO_ALLOW_SAMPLES_CHANGE      0x00000008
+#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE)
 /* @} */
 
 /* @} *//* Audio flags */
@@ -527,7 +528,7 @@ extern DECLSPEC SDL_AudioStream * SDLCALL SDL_NewAudioStream(const SDL_AudioForm
  *
  *  \param stream The stream the audio data is being added to
  *  \param buf A pointer to the audio data to add
- *  \param int The number of bytes to write to the stream
+ *  \param len The number of bytes to write to the stream
  *  \return 0 on success, or -1 on error.
  *
  *  \sa SDL_NewAudioStream
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_bits.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_bits.h
index bc285729..eb8322f0 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_bits.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_bits.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_blendmode.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_blendmode.h
index 9abd0bd4..36a5ea76 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_blendmode.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_blendmode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_clipboard.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_clipboard.h
index 341f4ba4..f28751eb 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_clipboard.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_clipboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_config.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_config.h
index 1bbb8384..c58be8e7 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_config.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_config.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -82,6 +82,9 @@ typedef unsigned int uintptr_t;
 #define HAVE_DSOUND_H 1
 #define HAVE_DXGI_H 1
 #define HAVE_XINPUT_H 1
+#define HAVE_MMDEVICEAPI_H 1
+#define HAVE_AUDIOCLIENT_H 1
+#define HAVE_ENDPOINTVOLUME_H 1
 
 /* This is disabled by default to avoid C runtime dependencies and manifest requirements */
 #ifdef HAVE_LIBC
@@ -109,13 +112,15 @@ typedef unsigned int uintptr_t;
 #define HAVE_MEMCMP 1
 #define HAVE_STRLEN 1
 #define HAVE__STRREV 1
-#define HAVE__STRUPR 1
-#define HAVE__STRLWR 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__STRUPR */
+/* #undef HAVE__STRLWR */
 #define HAVE_STRCHR 1
 #define HAVE_STRRCHR 1
 #define HAVE_STRSTR 1
-#define HAVE__LTOA 1
-#define HAVE__ULTOA 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__LTOA */
+/* #undef HAVE__ULTOA */
 #define HAVE_STRTOL 1
 #define HAVE_STRTOUL 1
 #define HAVE_STRTOD 1
@@ -125,30 +130,45 @@ typedef unsigned int uintptr_t;
 #define HAVE_STRNCMP 1
 #define HAVE__STRICMP 1
 #define HAVE__STRNICMP 1
-#define HAVE_ATAN 1
-#define HAVE_ATAN2 1
-#define HAVE_ACOS  1
-#define HAVE_ASIN  1
-#define HAVE_CEIL 1
-#define HAVE_COS 1
-#define HAVE_COSF 1
-#define HAVE_FABS 1
-#define HAVE_FLOOR 1
-#define HAVE_LOG 1
-#define HAVE_POW 1
-#define HAVE_SIN 1
-#define HAVE_SINF 1
-#define HAVE_SQRT 1
-#define HAVE_SQRTF 1
-#define HAVE_TAN 1
-#define HAVE_TANF 1
-#define HAVE__COPYSIGN 1
+#define HAVE_ACOS   1
+#define HAVE_ACOSF  1
+#define HAVE_ASIN   1
+#define HAVE_ASINF  1
+#define HAVE_ATAN   1
+#define HAVE_ATANF  1
+#define HAVE_ATAN2  1
+#define HAVE_ATAN2F 1
+#define HAVE_CEILF  1
+#define HAVE__COPYSIGN  1
+#define HAVE_COS    1
+#define HAVE_COSF   1
+#define HAVE_EXP    1
+#define HAVE_EXPF   1
+#define HAVE_FABS   1
+#define HAVE_FABSF  1
+#define HAVE_FLOOR  1
+#define HAVE_FLOORF 1
+#define HAVE_FMOD   1
+#define HAVE_FMODF  1
+#define HAVE_LOG    1
+#define HAVE_LOGF   1
+#define HAVE_LOG10  1
+#define HAVE_LOG10F 1
+#define HAVE_POW    1
+#define HAVE_POWF   1
+#define HAVE_SIN    1
+#define HAVE_SINF   1
+#define HAVE_SQRT   1
+#define HAVE_SQRTF  1
+#define HAVE_TAN    1
+#define HAVE_TANF   1
 #if defined(_MSC_VER)
 /* These functions were added with the VC++ 2013 C runtime library */
 #if _MSC_VER >= 1800
 #define HAVE_STRTOLL 1
 #define HAVE_VSSCANF 1
 #define HAVE_SCALBN 1
+#define HAVE_SCALBNF    1
 #endif
 /* This function is available with at least the VC++ 2008 C runtime library */
 #if _MSC_VER >= 1400
@@ -166,7 +186,6 @@ typedef unsigned int uintptr_t;
 /* Enable various audio drivers */
 #define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DSOUND 1
-#define SDL_AUDIO_DRIVER_XAUDIO2    0
 #define SDL_AUDIO_DRIVER_WINMM  1
 #define SDL_AUDIO_DRIVER_DISK   1
 #define SDL_AUDIO_DRIVER_DUMMY  1
@@ -174,9 +193,13 @@ typedef unsigned int uintptr_t;
 /* Enable various input drivers */
 #define SDL_JOYSTICK_DINPUT 1
 #define SDL_JOYSTICK_XINPUT 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_HAPTIC_DINPUT   1
 #define SDL_HAPTIC_XINPUT   1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
 
@@ -194,7 +217,7 @@ typedef unsigned int uintptr_t;
 #define SDL_VIDEO_RENDER_D3D    1
 #endif
 #ifndef SDL_VIDEO_RENDER_D3D11
-#define SDL_VIDEO_RENDER_D3D11	0
+#define SDL_VIDEO_RENDER_D3D11  0
 #endif
 
 /* Enable OpenGL support */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_cpuinfo.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_cpuinfo.h
index 94b64b03..ee3a47e8 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_cpuinfo.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_cpuinfo.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -51,27 +51,35 @@
 #include <intrin.h>
 #else
 #ifdef __ALTIVEC__
-#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__)
+#if defined(HAVE_ALTIVEC_H) && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
 #include <altivec.h>
 #undef pixel
+#undef bool
 #endif
 #endif
-#ifdef __MMX__
-#include <mmintrin.h>
+#if defined(__ARM_NEON__) && !defined(SDL_DISABLE_ARM_NEON_H)
+#include <arm_neon.h>
 #endif
-#ifdef __3dNOW__
+#if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
 #include <mm3dnow.h>
 #endif
-#ifdef __SSE__
+#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
+#include <immintrin.h>
+#else
+#if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
+#include <mmintrin.h>
+#endif
+#if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H)
 #include <xmmintrin.h>
 #endif
-#ifdef __SSE2__
+#if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H)
 #include <emmintrin.h>
 #endif
-#ifdef __SSE3__
+#if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H)
 #include <pmmintrin.h>
 #endif
-#endif
+#endif /* HAVE_IMMINTRIN_H */
+#endif /* compiler version */
 
 #include "begin_code.h"
 /* Set up for C function definitions, even when using C++ */
@@ -154,6 +162,11 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
+/**
+ *  This function returns true if the CPU has AVX-512F (foundation) features.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
+
 /**
  *  This function returns true if the CPU has NEON (ARM SIMD) features.
  */
@@ -164,7 +177,6 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
  */
 extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
 
-
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_egl.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_egl.h
index e47fbe86..d65ed437 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_egl.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_egl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -24,7 +24,7 @@
  *
  *  This is a simple file to encapsulate the EGL API headers.
  */
-#ifndef _MSC_VER
+#if !defined(_MSC_VER) && !defined(__ANDROID__)
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_endian.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_endian.h
index 3eda7f28..ed0bf5ba 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_endian.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_endian.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_error.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_error.h
index 49be9827..c0e46298 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_error.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_error.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_events.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_events.h
index 0fc09bc3..af22eb64 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_events.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_events.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -85,6 +85,9 @@ typedef enum
                                      Called on Android in onResume()
                                 */
 
+    /* Display events */
+    SDL_DISPLAYEVENT   = 0x150,  /**< Display state change */
+
     /* Window events */
     SDL_WINDOWEVENT    = 0x200, /**< Window state change */
     SDL_SYSWMEVENT,             /**< System specific event */
@@ -144,6 +147,9 @@ typedef enum
     SDL_AUDIODEVICEADDED = 0x1100, /**< A new audio device is available */
     SDL_AUDIODEVICEREMOVED,        /**< An audio device has been removed. */
 
+    /* Sensor events */
+    SDL_SENSORUPDATE = 0x1200,     /**< A sensor was updated */
+
     /* Render events */
     SDL_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
     SDL_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
@@ -168,6 +174,21 @@ typedef struct SDL_CommonEvent
     Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
 } SDL_CommonEvent;
 
+/**
+ *  \brief Display state change event data (event.display.*)
+ */
+typedef struct SDL_DisplayEvent
+{
+    Uint32 type;        /**< ::SDL_DISPLAYEVENT */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Uint32 display;     /**< The associated display index */
+    Uint8 event;        /**< ::SDL_DisplayEventID */
+    Uint8 padding1;
+    Uint8 padding2;
+    Uint8 padding3;
+    Sint32 data1;       /**< event dependent data */
+} SDL_DisplayEvent;
+
 /**
  *  \brief Window state change event data (event.window.*)
  */
@@ -471,6 +492,17 @@ typedef struct SDL_DropEvent
 } SDL_DropEvent;
 
 
+/**
+ *  \brief Sensor event structure (event.sensor.*)
+ */
+typedef struct SDL_SensorEvent
+{
+    Uint32 type;        /**< ::SDL_SENSORUPDATE */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Sint32 which;       /**< The instance ID of the sensor */
+    float data[6];      /**< Up to 6 values from the sensor - additional values can be queried using SDL_SensorGetData() */
+} SDL_SensorEvent;
+
 /**
  *  \brief The "quit requested" event
  */
@@ -526,6 +558,7 @@ typedef union SDL_Event
 {
     Uint32 type;                    /**< Event type, shared with all events */
     SDL_CommonEvent common;         /**< Common event data */
+    SDL_DisplayEvent display;       /**< Window event data */
     SDL_WindowEvent window;         /**< Window event data */
     SDL_KeyboardEvent key;          /**< Keyboard event data */
     SDL_TextEditingEvent edit;      /**< Text editing event data */
@@ -542,6 +575,7 @@ typedef union SDL_Event
     SDL_ControllerButtonEvent cbutton;  /**< Game Controller button event data */
     SDL_ControllerDeviceEvent cdevice;  /**< Game Controller device event data */
     SDL_AudioDeviceEvent adevice;   /**< Audio device event data */
+    SDL_SensorEvent sensor;         /**< Sensor event data */
     SDL_QuitEvent quit;             /**< Quit request event data */
     SDL_UserEvent user;             /**< Custom event data */
     SDL_SysWMEvent syswm;           /**< System dependent window event data */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_filesystem.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_filesystem.h
index a1c846ad..fa6a1fa6 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_filesystem.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_filesystem.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gamecontroller.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gamecontroller.h
index c9215132..6ae9c954 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gamecontroller.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gamecontroller.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -175,6 +175,14 @@ extern DECLSPEC SDL_bool SDLCALL SDL_IsGameController(int joystick_index);
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index);
 
+/**
+ *  Get the mapping of a game controller.
+ *  This can be called before any controllers are opened.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char *SDLCALL SDL_GameControllerMappingForDeviceIndex(int joystick_index);
+
 /**
  *  Open a game controller for use.
  *  The index passed as an argument refers to the N'th game controller on the system.
@@ -196,6 +204,13 @@ extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromInstanceID(SDL
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller);
 
+/**
+ *  Get the player index of an opened game controller, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller);
+
 /**
  *  Get the USB vendor ID of an opened controller, if available.
  *  If the vendor ID isn't available this function returns 0.
@@ -345,6 +360,19 @@ SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller,
 extern DECLSPEC Uint8 SDLCALL SDL_GameControllerGetButton(SDL_GameController *gamecontroller,
                                                           SDL_GameControllerButton button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param gamecontroller The controller to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a controller previously opened with SDL_GameControllerOpen().
  */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gesture.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gesture.h
index 2bba6a72..b223d80d 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gesture.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_gesture.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_haptic.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_haptic.h
index 60daefaa..2ea1bfc1 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_haptic.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_haptic.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -117,6 +117,17 @@
 extern "C" {
 #endif /* __cplusplus */
 
+/* FIXME: For SDL 2.1, adjust all the magnitude variables to be Uint16 (0xFFFF).
+ *
+ * At the moment the magnitude variables are mixed between signed/unsigned, and
+ * it is also not made clear that ALL of those variables expect a max of 0x7FFF.
+ *
+ * Some platforms may have higher precision than that (Linux FF, Windows XInput)
+ * so we should fix the inconsistency in favor of higher possible precision,
+ * adjusting for platforms that use different scales.
+ * -flibit
+ */
+
 /**
  *  \typedef SDL_Haptic
  *
@@ -656,8 +667,8 @@ typedef struct SDL_HapticRamp
  * This struct is exclusively for the ::SDL_HAPTIC_LEFTRIGHT effect.
  *
  * The Left/Right effect is used to explicitly control the large and small
- * motors, commonly found in modern game controllers. One motor is high
- * frequency, the other is low frequency.
+ * motors, commonly found in modern game controllers. The small (right) motor
+ * is high frequency, and the large (left) motor is low frequency.
  *
  * \sa SDL_HAPTIC_LEFTRIGHT
  * \sa SDL_HapticEffect
@@ -668,7 +679,7 @@ typedef struct SDL_HapticLeftRight
     Uint16 type;            /**< ::SDL_HAPTIC_LEFTRIGHT */
 
     /* Replay */
-    Uint32 length;          /**< Duration of the effect. */
+    Uint32 length;          /**< Duration of the effect in milliseconds. */
 
     /* Rumble */
     Uint16 large_magnitude; /**< Control of the large controller motor. */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_hints.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_hints.h
index 007a4bee..4ee72e97 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_hints.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_hints.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,7 @@ extern "C" {
  *    "opengl"
  *    "opengles2"
  *    "opengles"
+ *    "metal"
  *    "software"
  *
  *  The default varies by platform, but it's the first one in the list that
@@ -210,6 +211,18 @@ extern "C" {
  */
 #define SDL_HINT_VIDEO_X11_NET_WM_PING      "SDL_VIDEO_X11_NET_WM_PING"
 
+/**
+ * \brief A variable controlling whether the X11 _NET_WM_BYPASS_COMPOSITOR hint should be used.
+ * 
+ * This variable can be set to the following values:
+ * "0" - Disable _NET_WM_BYPASS_COMPOSITOR
+ * "1" - Enable _NET_WM_BYPASS_COMPOSITOR
+ * 
+ * By default SDL will use _NET_WM_BYPASS_COMPOSITOR
+ * 
+ */
+#define SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR "SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR"
+
 /**
  *  \brief  A variable controlling whether the window frame and title bar are interactive when the cursor is hidden 
  *
@@ -249,6 +262,16 @@ extern "C" {
  */
 #define SDL_HINT_GRAB_KEYBOARD              "SDL_GRAB_KEYBOARD"
 
+/**
+ *  \brief  A variable setting the double click time, in milliseconds.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME    "SDL_MOUSE_DOUBLE_CLICK_TIME"
+
+/**
+ *  \brief  A variable setting the double click radius, in pixels.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS    "SDL_MOUSE_DOUBLE_CLICK_RADIUS"
+
 /**
  *  \brief  A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in relative mode
  */
@@ -316,7 +339,7 @@ extern "C" {
 #define SDL_HINT_IDLE_TIMER_DISABLED "SDL_IOS_IDLE_TIMER_DISABLED"
 
 /**
- *  \brief  A variable controlling which orientations are allowed on iOS.
+ *  \brief  A variable controlling which orientations are allowed on iOS/Android.
  *
  *  In some circumstances it is necessary to be able to explicitly control
  *  which UI orientations are allowed.
@@ -355,16 +378,36 @@ extern "C" {
 #define SDL_HINT_APPLE_TV_REMOTE_ALLOW_ROTATION "SDL_APPLE_TV_REMOTE_ALLOW_ROTATION"
 
 /**
- *  \brief  A variable controlling whether the Android / iOS built-in
- *  accelerometer should be listed as a joystick device, rather than listing
- *  actual joysticks only.
+ * \brief  A variable controlling whether the home indicator bar on iPhone X
+ *         should be hidden.
  *
  *  This variable can be set to the following values:
- *    "0"       - List only real joysticks and accept input from them
- *    "1"       - List real joysticks along with the accelerometer as if it were a 3 axis joystick (the default).
+ *    "0"       - The indicator bar is not hidden (default for windowed applications)
+ *    "1"       - The indicator bar is hidden and is shown when the screen is touched (useful for movie playback applications)
+ *    "2"       - The indicator bar is dim and the first swipe makes it visible and the second swipe performs the "home" action (default for fullscreen applications)
+ */
+#define SDL_HINT_IOS_HIDE_HOME_INDICATOR "SDL_IOS_HIDE_HOME_INDICATOR"
+
+/**
+ *  \brief  A variable controlling whether the Android / iOS built-in
+ *  accelerometer should be listed as a joystick device.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - The accelerometer is not listed as a joystick
+ *    "1"       - The accelerometer is available as a 3 axis joystick (the default).
  */
 #define SDL_HINT_ACCELEROMETER_AS_JOYSTICK "SDL_ACCELEROMETER_AS_JOYSTICK"
 
+/**
+ *  \brief  A variable controlling whether the Android / tvOS remotes
+ *  should be listed as joystick devices, instead of sending keyboard events.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - Remotes send enter/escape/arrow key events
+ *    "1"       - Remotes are available as 2 axis, 2 button joysticks (the default).
+ */
+#define SDL_HINT_TV_REMOTE_AS_JOYSTICK "SDL_TV_REMOTE_AS_JOYSTICK"
+
 /**
  *  \brief  A variable that lets you disable the detection and use of Xinput gamepad devices
  *
@@ -432,6 +475,88 @@ extern "C" {
  */
 #define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS"
 
+/**
+ *  \brief  A variable controlling whether the HIDAPI joystick drivers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI drivers are not used
+ *    "1"       - HIDAPI drivers are used (the default)
+ *
+ *  This variable is the default for all drivers, but can be overridden by the hints for specific drivers below.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI "SDL_JOYSTICK_HIDAPI"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for PS4 controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4 "SDL_JOYSTICK_HIDAPI_PS4"
+
+/**
+ *  \brief  A variable controlling whether extended input reports should be used for PS4 controllers when using the HIDAPI driver.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - extended reports are not enabled (the default)
+ *    "1"       - extended reports
+ *
+ *  Extended input reports allow rumble on Bluetooth PS4 controllers, but
+ *  break DirectInput handling for applications that don't use SDL.
+ *
+ *  Once extended reports are enabled, they can not be disabled without
+ *  power cycling the controller.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE "SDL_JOYSTICK_HIDAPI_PS4_RUMBLE"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Steam Controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Nintendo Switch controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH "SDL_JOYSTICK_HIDAPI_SWITCH"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for XBox controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_XBOX   "SDL_JOYSTICK_HIDAPI_XBOX"
+
+/**
+ *  \brief  A variable that controls whether Steam Controllers should be exposed using the SDL joystick and game controller APIs
+ *
+ *  The variable can be set to the following values:
+ *    "0"       - Do not scan for Steam Controllers
+ *    "1"       - Scan for Steam Controllers (the default)
+ *
+ *  The default value is "1".  This hint must be set before initializing the joystick subsystem.
+ */
+#define SDL_HINT_ENABLE_STEAM_CONTROLLERS "SDL_ENABLE_STEAM_CONTROLLERS"
+
+
 /**
  *  \brief If set to "0" then never set the top most bit on a SDL Window, even if the video mode expects it.
  *      This is a debugging aid for developers and not expected to be used by end users. The default is "1"
@@ -494,6 +619,10 @@ extern "C" {
 *  This is specially useful if you build SDL against a non glibc libc library (such as musl) which
 *  provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
 *  Support for this hint is currently available only in the pthread, Windows, and PSP backend.
+*
+*  Instead of this hint, in 2.0.9 and later, you can use
+*  SDL_CreateThreadWithStackSize(). This hint only works with the classic
+*  SDL_CreateThread().
 */
 #define SDL_HINT_THREAD_STACK_SIZE              "SDL_THREAD_STACK_SIZE"
 
@@ -719,6 +848,35 @@ extern "C" {
  */
 #define SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH "SDL_ANDROID_SEPARATE_MOUSE_AND_TOUCH"
 
+ /**
+ * \brief A variable to control whether we trap the Android back button to handle it manually.
+ *        This is necessary for the right mouse button to work on some Android devices, or
+ *        to be able to trap the back button for use in your code reliably.  If set to true,
+ *        the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of 
+ *        SDL_SCANCODE_AC_BACK.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - Back button will be handled as usual for system. (default)
+ *   "1"       - Back button will be trapped, allowing you to handle the key press
+ *               manually.  (This will also let right mouse click work on systems 
+ *               where the right mouse button functions as back.)
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON"
+
+ /**
+ * \brief A variable to control whether the return key on the soft keyboard
+ *        should hide the soft keyboard on Android and iOS.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - The return key will be handled as a key event. This is the behaviour of SDL <= 2.0.3. (default)
+ *   "1"       - The return key will hide the keyboard.
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_RETURN_KEY_HIDES_IME "SDL_RETURN_KEY_HIDES_IME"
+
 /**
  *  \brief override the binding element for keyboard inputs for Emscripten builds
  *
@@ -752,7 +910,7 @@ extern "C" {
  *   "0"       - SDL will generate a window-close event when it sees Alt+F4.
  *   "1"       - SDL will only do normal key handling for Alt+F4.
  */
-#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4	"SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
+#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4 "SDL_WINDOWS_NO_CLOSE_ON_ALT_F4"
 
 /**
  *  \brief Prevent SDL from using version 4 of the bitmap header when saving BMPs.
@@ -797,6 +955,24 @@ extern "C" {
  */
 #define SDL_HINT_RPI_VIDEO_LAYER           "SDL_RPI_VIDEO_LAYER"
 
+/**
+ * \brief Tell the video driver that we only want a double buffer.
+ *
+ * By default, most lowlevel 2D APIs will use a triple buffer scheme that 
+ * wastes no CPU time on waiting for vsync after issuing a flip, but
+ * introduces a frame of latency. On the other hand, using a double buffer
+ * scheme instead is recommended for cases where low latency is an important
+ * factor because we save a whole frame of latency.
+ * We do so by waiting for vsync immediately after issuing a flip, usually just
+ * after eglSwapBuffers call in the backend's *_SwapWindow function.
+ *
+ * Since it's driver-specific, it's only supported where possible and
+ * implemented. Currently supported the following drivers:
+ * - KMSDRM (kmsdrm)
+ * - Raspberry Pi (raspberrypi)
+ */
+#define SDL_HINT_VIDEO_DOUBLE_BUFFER      "SDL_VIDEO_DOUBLE_BUFFER"
+
 /**
  *  \brief  A variable controlling what driver to use for OpenGL ES contexts.
  *
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_joystick.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_joystick.h
index f598dc82..6e05a9c2 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_joystick.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_joystick.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,10 +97,10 @@ typedef enum
 typedef enum
 {
     SDL_JOYSTICK_POWER_UNKNOWN = -1,
-    SDL_JOYSTICK_POWER_EMPTY,
-    SDL_JOYSTICK_POWER_LOW,
-    SDL_JOYSTICK_POWER_MEDIUM,
-    SDL_JOYSTICK_POWER_FULL,
+    SDL_JOYSTICK_POWER_EMPTY,   /* <= 5% */
+    SDL_JOYSTICK_POWER_LOW,     /* <= 20% */
+    SDL_JOYSTICK_POWER_MEDIUM,  /* <= 70% */
+    SDL_JOYSTICK_POWER_FULL,    /* <= 100% */
     SDL_JOYSTICK_POWER_WIRED,
     SDL_JOYSTICK_POWER_MAX
 } SDL_JoystickPowerLevel;
@@ -132,6 +132,12 @@ extern DECLSPEC int SDLCALL SDL_NumJoysticks(void);
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickNameForIndex(int device_index);
 
+/**
+ *  Get the player index of a joystick, or -1 if it's not available
+ *  This can be called before any joysticks are opened.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetDevicePlayerIndex(int device_index);
+
 /**
  *  Return the GUID for the joystick at this index
  *  This can be called before any joysticks are opened.
@@ -194,6 +200,13 @@ extern DECLSPEC SDL_Joystick *SDLCALL SDL_JoystickFromInstanceID(SDL_JoystickID
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickName(SDL_Joystick * joystick);
 
+/**
+ *  Get the player index of an opened joystick, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetPlayerIndex(SDL_Joystick * joystick);
+
 /**
  *  Return the GUID for this opened joystick
  */
@@ -361,6 +374,19 @@ extern DECLSPEC int SDLCALL SDL_JoystickGetBall(SDL_Joystick * joystick,
 extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetButton(SDL_Joystick * joystick,
                                                     int button);
 
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param joystick The joystick to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
 /**
  *  Close a joystick previously opened with SDL_JoystickOpen().
  */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keyboard.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keyboard.h
index e78ca469..87482317 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keyboard.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keyboard.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keycode.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keycode.h
index c41e45ff..d7d5b1db 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keycode.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_keycode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_loadso.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_loadso.h
index 6ea256c6..da56fb45 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_loadso.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_loadso.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_log.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_log.h
index 356d0e1c..e12b6588 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_log.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_main.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_main.h
index 2af32360..98558217 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_main.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_main.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -63,10 +63,13 @@
 /* On Android SDL provides a Java class in SDLActivity.java that is the
    main activity entry point.
 
-   See README-android.md for more details on extending that class.
+   See docs/README-android.md for more details on extending that class.
  */
 #define SDL_MAIN_NEEDED
 
+/* We need to export SDL_main so it can be launched from Java */
+#define SDLMAIN_DECLSPEC    DECLSPEC
+
 #elif defined(__NACL__)
 /* On NACL we use ppapi_simple to set up the application helper code,
    then wait for the first PSE_INSTANCE_DIDCHANGEVIEW event before 
@@ -85,6 +88,10 @@
 #define C_LINKAGE
 #endif /* __cplusplus */
 
+#ifndef SDLMAIN_DECLSPEC
+#define SDLMAIN_DECLSPEC
+#endif
+
 /**
  *  \file SDL_main.h
  *
@@ -107,7 +114,7 @@
 /**
  *  The prototype for the application's main() function
  */
-extern C_LINKAGE DECLSPEC int SDL_main(int argc, char *argv[]);
+extern C_LINKAGE SDLMAIN_DECLSPEC int SDL_main(int argc, char *argv[]);
 
 
 #include "begin_code.h"
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_messagebox.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_messagebox.h
index c326d8f0..b7be59d8 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_messagebox.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_messagebox.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mouse.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mouse.h
index 6001bd46..d3c9f615 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mouse.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mouse.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mutex.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mutex.h
index 0272379e..ba4247ce 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mutex.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_mutex.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_name.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_name.h
index 8095ed3f..ecd863f4 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_name.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_name.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengl.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengl.h
index 314dd57e..253d9c93 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengl.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengl.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles.h
index 800c5930..18dd984b 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles2.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles2.h
index 102f2f3f..6ccecf21 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles2.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_opengles2.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_pixels.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_pixels.h
index 04246689..0b4364b1 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_pixels.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_pixels.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -287,7 +287,9 @@ enum
     SDL_PIXELFORMAT_NV12 =      /**< Planar mode: Y + U/V interleaved  (2 planes) */
         SDL_DEFINE_PIXELFOURCC('N', 'V', '1', '2'),
     SDL_PIXELFORMAT_NV21 =      /**< Planar mode: Y + V/U interleaved  (2 planes) */
-        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1')
+        SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1'),
+    SDL_PIXELFORMAT_EXTERNAL_OES =      /**< Android video texture format */
+        SDL_DEFINE_PIXELFOURCC('O', 'E', 'S', ' ')
 };
 
 typedef struct SDL_Color
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_platform.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_platform.h
index 9dde385f..7dea4ce9 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_platform.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_platform.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -121,7 +121,12 @@
 #if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
 /* Try to find out if we're compiling for WinRT or non-WinRT */
 #if defined(_MSC_VER) && defined(__has_include)
-#define HAVE_WINAPIFAMILY_H __has_include(<winapifamily.h>)
+#if __has_include(<winapifamily.h>)
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
 /* If _USING_V110_SDK71_ is defined it means we are using the Windows XP toolset. */
 #elif defined(_MSC_VER) && (_MSC_VER >= 1700 && !_USING_V110_SDK71_)    /* _MSC_VER == 1700 for Visual Studio 2012 */
 #define HAVE_WINAPIFAMILY_H 1
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_power.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_power.h
index d48e8a37..a4fe8a93 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_power.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_power.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_quit.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_quit.h
index 9283c381..fea56a8d 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_quit.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_quit.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rect.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rect.h
index c4f6d74b..543bb618 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rect.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rect.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_render.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_render.h
index ea6ef9ff..d3361929 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_render.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_render.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -898,6 +898,27 @@ extern DECLSPEC int SDLCALL SDL_GL_BindTexture(SDL_Texture *texture, float *texw
  */
 extern DECLSPEC int SDLCALL SDL_GL_UnbindTexture(SDL_Texture *texture);
 
+/**
+ *  \brief Get the CAMetalLayer associated with the given Metal renderer
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return CAMetalLayer* on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalCommandEncoder()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalLayer(SDL_Renderer * renderer);
+
+/**
+ *  \brief Get the Metal command encoder for the current frame
+ *
+ *  \param renderer The renderer to query
+ *
+ *  \return id<MTLRenderCommandEncoder> on success, or NULL if the renderer isn't a Metal renderer
+ *
+ *  \sa SDL_RenderGetMetalLayer()
+ */
+extern DECLSPEC void *SDLCALL SDL_RenderGetMetalCommandEncoder(SDL_Renderer * renderer);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_revision.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_revision.h
index 9376093e..92fbe67b 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_revision.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_revision.h
@@ -1,2 +1,2 @@
-#define SDL_REVISION "hg-11645:2088cd828335"
-#define SDL_REVISION_NUMBER 11645
+#define SDL_REVISION "hg-12373:8feb5da6f2fb"
+#define SDL_REVISION_NUMBER 12373
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rwops.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rwops.h
index 7f0cbdfd..0960699d 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rwops.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_rwops.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_scancode.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_scancode.h
index 1d552120..63871aa3 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_scancode.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_scancode.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_sensor.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_sensor.h
new file mode 100644
index 00000000..ac163a8c
--- /dev/null
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_sensor.h
@@ -0,0 +1,251 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  \file SDL_sensor.h
+ *
+ *  Include file for SDL sensor event handling
+ *
+ */
+
+#ifndef _SDL_sensor_h
+#define _SDL_sensor_h
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+/**
+ *  \brief SDL_sensor.h
+ *
+ *  In order to use these functions, SDL_Init() must have been called
+ *  with the ::SDL_INIT_SENSOR flag.  This causes SDL to scan the system
+ *  for sensors, and load appropriate drivers.
+ */
+
+struct _SDL_Sensor;
+typedef struct _SDL_Sensor SDL_Sensor;
+
+/**
+ * This is a unique ID for a sensor for the time it is connected to the system,
+ * and is never reused for the lifetime of the application.
+ *
+ * The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
+ */
+typedef Sint32 SDL_SensorID;
+
+/* The different sensors defined by SDL
+ *
+ * Additional sensors may be available, using platform dependent semantics.
+ *
+ * Hare are the additional Android sensors:
+ * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
+ */
+typedef enum
+{
+    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
+    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
+    SDL_SENSOR_ACCEL,           /**< Accelerometer */
+    SDL_SENSOR_GYRO             /**< Gyroscope */
+} SDL_SensorType;
+
+/**
+ * Accelerometer sensor
+ *
+ * The accelerometer returns the current acceleration in SI meters per
+ * second squared. This includes gravity, so a device at rest will have
+ * an acceleration of SDL_STANDARD_GRAVITY straight down.
+ *
+ * values[0]: Acceleration on the x axis
+ * values[1]: Acceleration on the y axis
+ * values[2]: Acceleration on the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+#define SDL_STANDARD_GRAVITY    9.80665f
+
+/**
+ * Gyroscope sensor
+ *
+ * The gyroscope returns the current rate of rotation in radians per second.
+ * The rotation is positive in the counter-clockwise direction. That is,
+ * an observer looking from a positive location on one of the axes would
+ * see positive rotation on that axis when it appeared to be rotating
+ * counter-clockwise.
+ *
+ * values[0]: Angular speed around the x axis
+ * values[1]: Angular speed around the y axis
+ * values[2]: Angular speed around the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+
+/* Function prototypes */
+
+/**
+ *  \brief Count the number of sensors attached to the system right now
+ */
+extern DECLSPEC int SDLCALL SDL_NumSensors(void);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ * 
+ *  \return The sensor name, or NULL if device_index is out of range.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if device_index is out of range.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index);
+
+/**
+ *  \brief Open a sensor for use.
+ *
+ *  The index passed as an argument refers to the N'th sensor on the system.
+ *
+ *  \return A sensor identifier, or NULL if an error occurred.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index);
+
+/**
+ * Return the SDL_Sensor associated with an instance id.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  \return The sensor name, or NULL if the sensor is NULL.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor);
+
+/**
+ *  Get the current state of an opened sensor.
+ *
+ *  The number of values and interpretation of the data is sensor dependent.
+ *
+ *  \param sensor The sensor to query
+ *  \param data A pointer filled with the current sensor state
+ *  \param num_values The number of values to write to data
+ *
+ *  \return 0 or -1 if an error occurred.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor * sensor, float *data, int num_values);
+
+/**
+ *  Close a sensor previously opened with SDL_SensorOpen()
+ */
+extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor * sensor);
+
+/**
+ *  Update the current state of the open sensors.
+ *
+ *  This is called automatically by the event loop if sensor events are enabled.
+ *
+ *  This needs to be called from the thread that initialized the sensor subsystem.
+ */
+extern DECLSPEC void SDLCALL SDL_SensorUpdate(void);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_sensor_h */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_shape.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_shape.h
index 9e492d93..40a6baaa 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_shape.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_shape.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_stdinc.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_stdinc.h
index 72402299..e373bc38 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_stdinc.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_stdinc.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -86,6 +86,28 @@
 #ifdef HAVE_FLOAT_H
 # include <float.h>
 #endif
+#if defined(HAVE_ALLOCA) && !defined(alloca)
+# if defined(HAVE_ALLOCA_H)
+#  include <alloca.h>
+# elif defined(__GNUC__)
+#  define alloca __builtin_alloca
+# elif defined(_MSC_VER)
+#  include <malloc.h>
+#  define alloca _alloca
+# elif defined(__WATCOMC__)
+#  include <malloc.h>
+# elif defined(__BORLANDC__)
+#  include <malloc.h>
+# elif defined(__DMC__)
+#  include <stdlib.h>
+# elif defined(__AIX__)
+#pragma alloca
+# elif defined(__MRC__)
+void *alloca(unsigned);
+# else
+char *alloca();
+# endif
+#endif
 
 /**
  *  The number of elements in an array.
@@ -328,28 +350,6 @@ SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
 extern "C" {
 #endif
 
-#if defined(HAVE_ALLOCA) && !defined(alloca)
-# if defined(HAVE_ALLOCA_H)
-#  include <alloca.h>
-# elif defined(__GNUC__)
-#  define alloca __builtin_alloca
-# elif defined(_MSC_VER)
-#  include <malloc.h>
-#  define alloca _alloca
-# elif defined(__WATCOMC__)
-#  include <malloc.h>
-# elif defined(__BORLANDC__)
-#  include <malloc.h>
-# elif defined(__DMC__)
-#  include <stdlib.h>
-# elif defined(__AIX__)
-#pragma alloca
-# elif defined(__MRC__)
-void *alloca(unsigned);
-# else
-char *alloca();
-# endif
-#endif
 #ifdef HAVE_ALLOCA
 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
 #define SDL_stack_free(data)
@@ -445,12 +445,12 @@ SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
 #endif
 }
 
-
 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 
 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
 
+extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
@@ -501,18 +501,35 @@ extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size
 #endif
 
 extern DECLSPEC double SDLCALL SDL_acos(double x);
+extern DECLSPEC float SDLCALL SDL_acosf(float x);
 extern DECLSPEC double SDLCALL SDL_asin(double x);
+extern DECLSPEC float SDLCALL SDL_asinf(float x);
 extern DECLSPEC double SDLCALL SDL_atan(double x);
+extern DECLSPEC float SDLCALL SDL_atanf(float x);
 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
+extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
 extern DECLSPEC double SDLCALL SDL_ceil(double x);
+extern DECLSPEC float SDLCALL SDL_ceilf(float x);
 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
+extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_cos(double x);
 extern DECLSPEC float SDLCALL SDL_cosf(float x);
+extern DECLSPEC double SDLCALL SDL_exp(double x);
+extern DECLSPEC float SDLCALL SDL_expf(float x);
 extern DECLSPEC double SDLCALL SDL_fabs(double x);
+extern DECLSPEC float SDLCALL SDL_fabsf(float x);
 extern DECLSPEC double SDLCALL SDL_floor(double x);
+extern DECLSPEC float SDLCALL SDL_floorf(float x);
+extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
+extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_log(double x);
+extern DECLSPEC float SDLCALL SDL_logf(float x);
+extern DECLSPEC double SDLCALL SDL_log10(double x);
+extern DECLSPEC float SDLCALL SDL_log10f(float x);
 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
+extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
+extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
 extern DECLSPEC double SDLCALL SDL_sin(double x);
 extern DECLSPEC float SDLCALL SDL_sinf(float x);
 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_surface.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_surface.h
index 510690c9..730d49fc 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_surface.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_surface.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -97,6 +97,17 @@ typedef struct SDL_Surface
 typedef int (SDLCALL *SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
                                  struct SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ * \brief The formula used for converting between YUV and RGB
+ */
+typedef enum
+{
+    SDL_YUV_CONVERSION_JPEG,        /**< Full range JPEG */
+    SDL_YUV_CONVERSION_BT601,       /**< BT.601 (the default) */
+    SDL_YUV_CONVERSION_BT709,       /**< BT.709 */
+    SDL_YUV_CONVERSION_AUTOMATIC    /**< BT.601 for SD content, BT.709 for HD content */
+} SDL_YUV_CONVERSION_MODE;
+
 /**
  *  Allocate and free an RGB surface.
  *
@@ -237,6 +248,13 @@ extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
                                             int flag, Uint32 key);
 
+/**
+ *  \brief Returns whether the surface has a color key
+ *
+ *  \return SDL_TRUE if the surface has a color key, or SDL_FALSE if the surface is NULL or has no color key
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasColorKey(SDL_Surface * surface);
+
 /**
  *  \brief Gets the color key (transparent pixel) in a blittable surface.
  *
@@ -509,6 +527,20 @@ extern DECLSPEC int SDLCALL SDL_LowerBlitScaled
     (SDL_Surface * src, SDL_Rect * srcrect,
     SDL_Surface * dst, SDL_Rect * dstrect);
 
+/**
+ *  \brief Set the YUV conversion mode
+ */
+extern DECLSPEC void SDLCALL SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_MODE mode);
+
+/**
+ *  \brief Get the YUV conversion mode
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionMode(void);
+
+/**
+ *  \brief Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC
+ */
+extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionModeForResolution(int width, int height);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_system.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_system.h
index eb069b33..4dc372d6 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_system.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_system.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -76,6 +76,18 @@ extern DECLSPEC SDL_bool SDLCALL SDL_DXGIGetOutputInfo( int displayIndex, int *a
 #endif /* __WIN32__ */
 
 
+/* Platform specific functions for Linux */
+#ifdef __LINUX__
+
+/**
+   \brief Sets the UNIX nice value for a thread, using setpriority() if possible, and RealtimeKit if available.
+
+   \return 0 on success, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int priority);
+ 
+#endif /* __LINUX__ */
+	
 /* Platform specific functions for iOS */
 #if defined(__IPHONEOS__) && __IPHONEOS__
 
@@ -108,6 +120,26 @@ extern DECLSPEC void * SDLCALL SDL_AndroidGetJNIEnv(void);
  */
 extern DECLSPEC void * SDLCALL SDL_AndroidGetActivity(void);
 
+/**
+   \brief Return true if the application is running on Android TV
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsAndroidTV(void);
+
+/**
+   \brief Return true if the application is running on a Chromebook
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsChromebook(void);
+
+/**
+  \brief Return true is the application is running on a Samsung DeX docking station
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsDeXMode(void);
+
+/**
+ \brief Trigger the Android system back button behavior.
+ */
+extern DECLSPEC void SDLCALL SDL_AndroidBackButton(void);
+
 /**
    See the official Android developer guide for more information:
    http://developer.android.com/guide/topics/data/data-storage.html
@@ -169,6 +201,25 @@ typedef enum
 } SDL_WinRT_Path;
 
 
+/**
+ *  \brief WinRT Device Family
+ */
+typedef enum
+{
+    /** \brief Unknown family  */
+    SDL_WINRT_DEVICEFAMILY_UNKNOWN,
+
+    /** \brief Desktop family*/
+    SDL_WINRT_DEVICEFAMILY_DESKTOP,
+
+    /** \brief Mobile family (for example smartphone) */
+    SDL_WINRT_DEVICEFAMILY_MOBILE,
+
+    /** \brief XBox family */
+    SDL_WINRT_DEVICEFAMILY_XBOX,
+} SDL_WinRT_DeviceFamily;
+
+
 /**
  *  \brief Retrieves a WinRT defined path on the local file system
  *
@@ -203,8 +254,20 @@ extern DECLSPEC const wchar_t * SDLCALL SDL_WinRTGetFSPathUNICODE(SDL_WinRT_Path
  */
 extern DECLSPEC const char * SDLCALL SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathType);
 
+/**
+ *  \brief Detects the device family of WinRT plattform on runtime
+ *
+ *  \return Device family
+ */
+extern DECLSPEC SDL_WinRT_DeviceFamily SDLCALL SDL_WinRTGetDeviceFamily();
+
 #endif /* __WINRT__ */
 
+/**
+ \brief Return true if the current device is a tablet.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsTablet(void);
+
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_syswm.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_syswm.h
index 2d18afb6..f1c4021c 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_syswm.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_syswm.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -33,12 +33,6 @@
 #include "SDL_video.h"
 #include "SDL_version.h"
 
-#include "begin_code.h"
-/* Set up for C function definitions, even when using C++ */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /**
  *  \file SDL_syswm.h
  *
@@ -110,6 +104,12 @@ typedef void *EGLSurface;
 #include "SDL_egl.h"
 #endif
 
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  *  These are the various supported windowing subsystems
  */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test.h
index f55afcb0..6cc373bf 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_assert.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_assert.h
index 11d83639..1788d7a2 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_assert.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_assert.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_common.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_common.h
index 24eeb32a..be2e6b2a 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_common.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_common.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_compare.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_compare.h
index 9f4c4587..c22e447d 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_compare.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_compare.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_crc32.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_crc32.h
index add480c3..3d235d07 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_crc32.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_crc32.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_font.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_font.h
index 58c9f9d5..59cbdcad 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_font.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_font.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_fuzzer.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
index 6cf05747..8fcb9ebb 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_fuzzer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_harness.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_harness.h
index 68c4bcb7..8641e0a7 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_harness.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_harness.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_images.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_images.h
index 683d2f8a..9c4dd5b8 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_images.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_images.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_log.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_log.h
index 9f993fbb..ebd44fb5 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_log.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_log.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_md5.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_md5.h
index 67ca7d1d..0e410576 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_md5.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_md5.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_memory.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_memory.h
index 43b67f52..4827ae6f 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_memory.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_memory.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_random.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_random.h
index 2b01922c..0eb414ff 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_random.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_test_random.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_thread.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_thread.h
index d0f6575c..554dd0b6 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_thread.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_thread.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -54,12 +54,13 @@ typedef unsigned int SDL_TLSID;
 /**
  *  The SDL thread priority.
  *
- *  \note On many systems you require special privileges to set high priority.
+ *  \note On many systems you require special privileges to set high or time critical priority.
  */
 typedef enum {
     SDL_THREAD_PRIORITY_LOW,
     SDL_THREAD_PRIORITY_NORMAL,
-    SDL_THREAD_PRIORITY_HIGH
+    SDL_THREAD_PRIORITY_HIGH,
+    SDL_THREAD_PRIORITY_TIME_CRITICAL
 } SDL_ThreadPriority;
 
 /**
@@ -105,14 +106,24 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
 
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
+                 const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
+
+
 /**
  *  Create a thread.
  */
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #endif
 
 #elif defined(__OS2__)
@@ -132,15 +143,31 @@ extern DECLSPEC SDL_Thread *SDLCALL
 SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #endif
 
 #else
 
+/**
+ *  Create a thread with a default stack size.
+ *
+ *  This is equivalent to calling:
+ *  SDL_CreateThreadWithStackSize(fn, name, 0, data);
+ */
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+
 /**
  *  Create a thread.
  *
@@ -158,9 +185,17 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
  *   If a system imposes requirements, SDL will try to munge the string for
  *    it (truncate, etc), but the original string contents will be available
  *    from SDL_GetThreadName().
+ *
+ *   The size (in bytes) of the new stack can be specified. Zero means "use
+ *    the system default" which might be wildly different between platforms
+ *    (x86 Linux generally defaults to eight megabytes, an embedded device
+ *    might be a few kilobytes instead).
+ *
+ *   In SDL 2.1, stacksize will be folded into the original SDL_CreateThread
+ *    function.
  */
 extern DECLSPEC SDL_Thread *SDLCALL
-SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
 
 #endif
 
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_timer.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_timer.h
index 282625d3..5600618f 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_timer.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_timer.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_touch.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_touch.h
index db9e25eb..f4075e79 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_touch.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_touch.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_types.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_types.h
index 06ee80cb..4ac248c8 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_types.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_types.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_version.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_version.h
index 5b4c4024..31443e14 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_version.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_version.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -59,7 +59,7 @@ typedef struct SDL_version
 */
 #define SDL_MAJOR_VERSION   2
 #define SDL_MINOR_VERSION   0
-#define SDL_PATCHLEVEL      7
+#define SDL_PATCHLEVEL      9
 
 /**
  *  \brief Macro to determine SDL version program was compiled against.
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_video.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_video.h
index 6f6cda8b..461f1380 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_video.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_video.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -110,7 +110,9 @@ typedef enum
     SDL_WINDOW_MOUSE_FOCUS = 0x00000400,        /**< window has mouse focus */
     SDL_WINDOW_FULLSCREEN_DESKTOP = ( SDL_WINDOW_FULLSCREEN | 0x00001000 ),
     SDL_WINDOW_FOREIGN = 0x00000800,            /**< window not created by SDL */
-    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported */
+    SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000,      /**< window should be created in high-DPI mode if supported.
+                                                     On macOS NSHighResolutionCapable must be set true in the
+                                                     application's Info.plist for this to have any effect. */
     SDL_WINDOW_MOUSE_CAPTURE = 0x00004000,      /**< window has mouse captured (unrelated to INPUT_GRABBED) */
     SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000,      /**< window should always be above others */
     SDL_WINDOW_SKIP_TASKBAR  = 0x00010000,      /**< window should not be added to the taskbar */
@@ -167,6 +169,24 @@ typedef enum
     SDL_WINDOWEVENT_HIT_TEST        /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL. */
 } SDL_WindowEventID;
 
+/**
+ *  \brief Event subtype for display events
+ */
+typedef enum
+{
+    SDL_DISPLAYEVENT_NONE,          /**< Never used */
+    SDL_DISPLAYEVENT_ORIENTATION    /**< Display orientation has changed to data1 */
+} SDL_DisplayEventID;
+
+typedef enum
+{
+    SDL_ORIENTATION_UNKNOWN,            /**< The display orientation can't be determined */
+    SDL_ORIENTATION_LANDSCAPE,          /**< The display is in landscape mode, with the right side up, relative to portrait mode */
+    SDL_ORIENTATION_LANDSCAPE_FLIPPED,  /**< The display is in landscape mode, with the left side up, relative to portrait mode */
+    SDL_ORIENTATION_PORTRAIT,           /**< The display is in portrait mode */
+    SDL_ORIENTATION_PORTRAIT_FLIPPED    /**< The display is in portrait mode, upside down */
+} SDL_DisplayOrientation;
+
 /**
  *  \brief An opaque handle to an OpenGL context.
  */
@@ -314,18 +334,6 @@ extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex);
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect);
 
-/**
- *  \brief Get the dots/pixels-per-inch for a display
- *
- *  \note Diagonal, horizontal and vertical DPI can all be optionally
- *        returned if the parameter is non-NULL.
- *
- *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
- *
- *  \sa SDL_GetNumVideoDisplays()
- */
-extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
-
 /**
  *  \brief Get the usable desktop area represented by a display, with the
  *         primary display located at 0,0
@@ -345,6 +353,27 @@ extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, fl
  */
 extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect);
 
+/**
+ *  \brief Get the dots/pixels-per-inch for a display
+ *
+ *  \note Diagonal, horizontal and vertical DPI can all be optionally
+ *        returned if the parameter is non-NULL.
+ *
+ *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
+
+/**
+ *  \brief Get the orientation of a display
+ *
+ *  \return The orientation of the display, or SDL_ORIENTATION_UNKNOWN if it isn't available.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC SDL_DisplayOrientation SDLCALL SDL_GetDisplayOrientation(int displayIndex);
+
 /**
  *  \brief Returns the number of available display modes.
  *
@@ -470,7 +499,7 @@ extern DECLSPEC Uint32 SDLCALL SDL_GetWindowPixelFormat(SDL_Window * window);
  *  If the window is created with any of the SDL_WINDOW_OPENGL or
  *  SDL_WINDOW_VULKAN flags, then the corresponding LoadLibrary function
  *  (SDL_GL_LoadLibrary or SDL_Vulkan_LoadLibrary) is called and the
- *  corrensponding UnloadLibrary function is called by SDL_DestroyWindow().
+ *  corresponding UnloadLibrary function is called by SDL_DestroyWindow().
  *
  *  If SDL_WINDOW_VULKAN is specified and there isn't a working Vulkan driver,
  *  SDL_CreateWindow() will fail because SDL_Vulkan_LoadLibrary() will fail.
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_vulkan.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_vulkan.h
index 803b5fee..972cca4d 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_vulkan.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/SDL_vulkan.h
@@ -69,30 +69,43 @@ typedef VkSurfaceKHR SDL_vulkanSurface; /* for compatibility with Tizen */
  *  \brief Dynamically load a Vulkan loader library.
  *
  *  \param [in] path The platform dependent Vulkan loader library name, or
- *              \c NULL to open the default Vulkan loader library.
+ *              \c NULL.
  *
  *  \return \c 0 on success, or \c -1 if the library couldn't be loaded.
  *
- *  This should be done after initializing the video driver, but before
+ *  If \a path is NULL SDL will use the value of the environment variable
+ *  \c SDL_VULKAN_LIBRARY, if set, otherwise it loads the default Vulkan
+ *  loader library.
+ *
+ *  This should be called after initializing the video driver, but before
  *  creating any Vulkan windows. If no Vulkan loader library is loaded, the
  *  default library will be loaded upon creation of the first Vulkan window.
  *
- *  \note If you specify a non-NULL \a path, you should retrieve all of the
- *        Vulkan functions used in your program from the dynamic library using
+ *  \note It is fairly common for Vulkan applications to link with \a libvulkan
+ *        instead of explicitly loading it at run time. This will work with
+ *        SDL provided the application links to a dynamic library and both it
+ *        and SDL use the same search path.
+ *
+ *  \note If you specify a non-NULL \c path, an application should retrieve all
+ *        of the Vulkan functions it uses from the dynamic library using
  *        \c SDL_Vulkan_GetVkGetInstanceProcAddr() unless you can guarantee
- *        \a path points to the same vulkan loader library that you linked to.
+ *        \c path points to the same vulkan loader library the application
+ *        linked to.
  *
  *  \note On Apple devices, if \a path is NULL, SDL will attempt to find
  *        the vkGetInstanceProcAddr address within all the mach-o images of
- *        the current process. This is because the currently (v0.17.0)
- *        recommended MoltenVK (Vulkan on Metal) usage is as a static library.
- *        If it is not found then SDL will attempt to load \c libMoltenVK.dylib.
- *        Applications using the dylib alternative therefore do not need to do
- *        anything special when calling SDL.
+ *        the current process. This is because it is fairly common for Vulkan
+ *        applications to link with libvulkan (and historically MoltenVK was
+ *        provided as a static library). If it is not found then, on macOS, SDL
+ *        will attempt to load \c vulkan.framework/vulkan, \c libvulkan.1.dylib,
+ *        \c MoltenVK.framework/MoltenVK and \c libMoltenVK.dylib in that order.
+ *        On iOS SDL will attempt to load \c libMoltenVK.dylib. Applications
+ *        using a dynamic framework or .dylib must ensure it is included in its
+ *        application bundle.
  *
- *  \note On non-Apple devices, SDL requires you to either not link to the
- *        Vulkan loader or link to a dynamic library version. This limitation
- *        may be removed in a future version of SDL.
+ *  \note On non-Apple devices, application linking with a static libvulkan is
+ *        not supported. Either do not link to the Vulkan loader or link to a
+ *        dynamic library version.
  *
  *  \note This function will fail if there are no working Vulkan drivers
  *        installed.
@@ -122,11 +135,11 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \brief Get the names of the Vulkan instance extensions needed to create
  *         a surface with \c SDL_Vulkan_CreateSurface().
  *
- *  \param [in]     window Window for which the required Vulkan instance
+ *  \param [in]     \c NULL or window Window for which the required Vulkan instance
  *                  extensions should be retrieved
- *  \param [in,out] count pointer to an \c unsigned related to the number of
+ *  \param [in,out] pCount pointer to an \c unsigned related to the number of
  *                  required Vulkan instance extensions
- *  \param [out]    names \c NULL or a pointer to an array to be filled with the
+ *  \param [out]    pNames \c NULL or a pointer to an array to be filled with the
  *                  required Vulkan instance extensions
  *
  *  \return \c SDL_TRUE on success, \c SDL_FALSE on error.
@@ -140,6 +153,10 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  is smaller than the number of required extensions, \c SDL_FALSE will be
  *  returned instead of \c SDL_TRUE, to indicate that not all the required
  *  extensions were returned.
+ * 
+ *  \note If \c window is not NULL, it will be checked against its creation
+ *        flags to ensure that the Vulkan flag is present. This parameter
+ *        will be removed in a future major release.
  *
  *  \note The returned list of extensions will contain \c VK_KHR_surface
  *        and zero or more platform specific extensions
@@ -147,12 +164,13 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *  \note The extension names queried here must be enabled when calling
  *        VkCreateInstance, otherwise surface creation will fail.
  *
- *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag.
+ *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag
+ *        or be \c NULL
  *
  *  \code
  *  unsigned int count;
  *  // get count of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, NULL))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, NULL))
  *      handle_error();
  *
  *  static const char *const additionalExtensions[] =
@@ -166,7 +184,7 @@ extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
  *      handle_error();
  *
  *  // get names of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, names))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, names))
  *      handle_error();
  *
  *  // copy additional extensions after required extensions
@@ -240,6 +258,9 @@ extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_CreateSurface(
  * platform with high-DPI support (Apple calls this "Retina"), and not disabled
  * by the \c SDL_HINT_VIDEO_HIGHDPI_DISABLED hint.
  *
+ *  \note On macOS high-DPI support must be enabled for an application by
+ *        setting NSHighResolutionCapable to true in its Info.plist.
+ *
  *  \sa SDL_GetWindowSize()
  *  \sa SDL_CreateWindow()
  */
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/begin_code.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/begin_code.h
index 5372d6f0..6c210624 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/begin_code.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/begin_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/close_code.h b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/close_code.h
index 2a352dbb..b3b70a4c 100644
--- a/libs/SDL2/x86_64-w64-mingw32/include/SDL2/close_code.h
+++ b/libs/SDL2/x86_64-w64-mingw32/include/SDL2/close_code.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake b/libs/SDL2/x86_64-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
index f5bfc3b7..455d8ed5 100644
--- a/libs/SDL2/x86_64-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
+++ b/libs/SDL2/x86_64-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
@@ -1,11 +1,11 @@
 # sdl2 cmake project-config input for ./configure scripts
 
-set(prefix "/usr/local/x86_64-w64-mingw32") 
+set(prefix "/opt/local/x86_64-w64-mingw32") 
 set(exec_prefix "${prefix}")
 set(libdir "${exec_prefix}/lib")
-set(SDL2_PREFIX "/usr/local/x86_64-w64-mingw32")
-set(SDL2_EXEC_PREFIX "/usr/local/x86_64-w64-mingw32")
+set(SDL2_PREFIX "/opt/local/x86_64-w64-mingw32")
+set(SDL2_EXEC_PREFIX "/opt/local/x86_64-w64-mingw32")
 set(SDL2_LIBDIR "${exec_prefix}/lib")
 set(SDL2_INCLUDE_DIRS "${prefix}/include/SDL2")
-set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lmingw32 -lSDL2main -lSDL2  -mwindows")
+set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lmingw32 -lSDL2main -lSDL2 -mwindows")
 string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.a b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.a
index d81a9cbc..82795068 100644
Binary files a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.a and b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.a differ
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.dll.a b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.dll.a
index 65648749..669b6a63 100755
Binary files a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.dll.a and b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.dll.a differ
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.la b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.la
new file mode 100644
index 00000000..d5295eec
--- /dev/null
+++ b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2.la
@@ -0,0 +1,41 @@
+# libSDL2.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='../bin/SDL2.dll'
+
+# Names of this library.
+library_names='libSDL2.dll.a'
+
+# The name of the static archive.
+old_library='libSDL2.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2.
+current=9
+age=9
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/x86_64-w64-mingw32/lib'
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.a b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.a
index af32f868..fcbdbbf7 100644
Binary files a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.a and b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.a differ
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.la b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.la
new file mode 100644
index 00000000..76ad43f0
--- /dev/null
+++ b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2_test.la
@@ -0,0 +1,41 @@
+# libSDL2_test.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libSDL2_test.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=''
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2_test.
+current=0
+age=0
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/x86_64-w64-mingw32/lib'
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.a b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.a
index decdd5a0..3a26e430 100644
Binary files a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.a and b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.a differ
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.la b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.la
new file mode 100644
index 00000000..5aa46933
--- /dev/null
+++ b/libs/SDL2/x86_64-w64-mingw32/lib/libSDL2main.la
@@ -0,0 +1,41 @@
+# libSDL2main.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libSDL2main.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=''
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2main.
+current=0
+age=0
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL/SDL2-2.0.9/x86_64-w64-mingw32/lib'
diff --git a/libs/SDL2/x86_64-w64-mingw32/lib/pkgconfig/sdl2.pc b/libs/SDL2/x86_64-w64-mingw32/lib/pkgconfig/sdl2.pc
index d06fc29c..ae83be16 100644
--- a/libs/SDL2/x86_64-w64-mingw32/lib/pkgconfig/sdl2.pc
+++ b/libs/SDL2/x86_64-w64-mingw32/lib/pkgconfig/sdl2.pc
@@ -1,15 +1,15 @@
 # sdl pkg-config source file
 
-prefix=/usr/local/x86_64-w64-mingw32
+prefix=/opt/local/x86_64-w64-mingw32
 exec_prefix=${prefix}
 libdir=${exec_prefix}/lib
 includedir=${prefix}/include
 
 Name: sdl2
 Description: Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
-Version: 2.0.7
+Version: 2.0.9
 Requires:
 Conflicts:
-Libs: -L${libdir}  -lmingw32 -lSDL2main -lSDL2  -mwindows
-Libs.private: -lmingw32 -lSDL2main -lSDL2  -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -static-libgcc
+Libs: -L${libdir}  -lmingw32 -lSDL2main -lSDL2 -mwindows
+Libs.private: -lmingw32 -lSDL2main -lSDL2 -mwindows  -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
 Cflags: -I${includedir}/SDL2  -Dmain=SDL_main
diff --git a/libs/SDL2_mixer/CHANGES.txt b/libs/SDL2_mixer/CHANGES.txt
index 1c99deb8..7760ddfe 100644
--- a/libs/SDL2_mixer/CHANGES.txt
+++ b/libs/SDL2_mixer/CHANGES.txt
@@ -1,3 +1,15 @@
+2.0.4:
+Ozkan Sezer - Wed, 10 Oct 2018 14:56:10
+ * Removed smpeg support for mp3 music, now that it's replaced by libmpg123
+Ozkan Sezer - Sun, 07 Oct 2018 08:50:02
+ * Fixed mp3 mad decoder to skip tags, which otherwise would lead to crashes
+Ozkan Sezer - Fri, 15 Jun 2018 05:32:56
+ * Added support for Opus music playback using opusfile library
+
+2.0.3:
+Sam Lantinga - Thu, Mar  1, 2018  9:06:58 AM
+ * Fixed regression where Mix_Init() would return 0 for available music formats
+
 2.0.2:
 Sam Lantinga - Fri Oct 20 22:04:50 PDT 2017
  * Implemented 24-bit and surround sound support for FLAC audio files
diff --git a/libs/SDL2_mixer/COPYING.txt b/libs/SDL2_mixer/COPYING.txt
index 056d0f35..234a5a5e 100644
--- a/libs/SDL2_mixer/COPYING.txt
+++ b/libs/SDL2_mixer/COPYING.txt
@@ -1,6 +1,6 @@
 /*
   SDL_mixer:  An audio mixer library based on the SDL library
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/libs/SDL2_mixer/README.txt b/libs/SDL2_mixer/README.txt
index 14de6e00..a639c37b 100644
--- a/libs/SDL2_mixer/README.txt
+++ b/libs/SDL2_mixer/README.txt
@@ -14,7 +14,7 @@ for documentation on this mixer library.
 The mixer can currently load Microsoft WAVE files and Creative Labs VOC
 files as audio samples, it can load FLAC files with libFLAC, it can load
 Ogg Vorbis files with Ogg Vorbis or Tremor libraries, it can load MP3 files
-using mpg123, SMPEG or libmad, and it can load MIDI files with Timidity,
+using mpg123 or libmad, and it can load MIDI files with Timidity,
 FluidSynth, and natively on Windows, Mac OSX, and Linux, and finally it can
 load the following file formats via ModPlug or MikMod: .MOD .S3M .IT .XM.
 
diff --git a/libs/SDL2_mixer/SRB2NOTE.txt b/libs/SDL2_mixer/SRB2NOTE.txt
new file mode 100644
index 00000000..7053c44f
--- /dev/null
+++ b/libs/SDL2_mixer/SRB2NOTE.txt
@@ -0,0 +1,15 @@
+# SDL Mixer Development Libaries
+
+Download both the VC and MinGW packages and extract them here.
+
+https://www.libsdl.org/projects/SDL_mixer/
+
+## VC Package
+
+* include
+* lib
+
+## MinGW Package
+
+* i686-w64-mingw32
+* x86_64-w64-mingw32
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.FLAC.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.FLAC.txt
index 94fd3aa6..2e67b77c 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.FLAC.txt
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.FLAC.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_mixer/file/default/external
 ---
 
 Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.modplug.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.modplug.txt
index 59fbf826..a89532db 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.modplug.txt
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.modplug.txt
@@ -1 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.mpg123.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.mpg123.txt
index d7bb85fc..2111cd79 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.mpg123.txt
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.mpg123.txt
@@ -1,3 +1,7 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
 
 Main message, to include in "About ..." boxes, etc:
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
index c2cb6d56..6456dc4e 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_image/file/default/external
 ---
 
 Copyright (c) 2002-2008 Xiph.org Foundation
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opus.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opus.txt
new file mode 100644
index 00000000..adb56a85
--- /dev/null
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+                    Jean-Marc Valin, Timothy B. Terriberry,
+                    CSIRO, Gregory Maxwell, Mark Borgerding,
+                    Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the 
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opusfile.txt b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opusfile.txt
new file mode 100644
index 00000000..dfc9681f
--- /dev/null
+++ b/libs/SDL2_mixer/i686-w64-mingw32/bin/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/SDL2_mixer.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/SDL2_mixer.dll
index 54ebbb1d..96abfa1a 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/SDL2_mixer.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/SDL2_mixer.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libFLAC-8.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libFLAC-8.dll
index 1c55ad49..b56ea2a8 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libFLAC-8.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libFLAC-8.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libmodplug-1.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libmodplug-1.dll
index a2cba0d6..d66a317d 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libmodplug-1.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libmodplug-1.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libmpg123-0.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libmpg123-0.dll
index ca7de300..240298bb 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libmpg123-0.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libmpg123-0.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libogg-0.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libogg-0.dll
index 3abe6ebf..233c0f42 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libogg-0.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libogg-0.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libopus-0.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libopus-0.dll
new file mode 100644
index 00000000..94ea541d
Binary files /dev/null and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libopus-0.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libopusfile-0.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libopusfile-0.dll
new file mode 100644
index 00000000..260796b6
Binary files /dev/null and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libopusfile-0.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbis-0.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbis-0.dll
index 4e44ef08..4e4aaa54 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbis-0.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbis-0.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbisfile-3.dll b/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbisfile-3.dll
index e757eb6d..5d90a235 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbisfile-3.dll and b/libs/SDL2_mixer/i686-w64-mingw32/bin/libvorbisfile-3.dll differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/include/SDL2/SDL_mixer.h b/libs/SDL2_mixer/i686-w64-mingw32/include/SDL2/SDL_mixer.h
index cbb8ae6b..009d8a2d 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/include/SDL2/SDL_mixer.h
+++ b/libs/SDL2_mixer/i686-w64-mingw32/include/SDL2/SDL_mixer.h
@@ -1,6 +1,6 @@
 /*
   SDL_mixer:  An audio mixer library based on the SDL library
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -38,7 +38,7 @@ extern "C" {
 */
 #define SDL_MIXER_MAJOR_VERSION 2
 #define SDL_MIXER_MINOR_VERSION 0
-#define SDL_MIXER_PATCHLEVEL    2
+#define SDL_MIXER_PATCHLEVEL    4
 
 /* This macro can be used to fill a version structure with the compile-time
  * version of the SDL_mixer library.
@@ -80,7 +80,8 @@ typedef enum
     MIX_INIT_MOD    = 0x00000002,
     MIX_INIT_MP3    = 0x00000008,
     MIX_INIT_OGG    = 0x00000010,
-    MIX_INIT_MID    = 0x00000020
+    MIX_INIT_MID    = 0x00000020,
+    MIX_INIT_OPUS   = 0x00000040
 } MIX_InitFlags;
 
 /* Loads dynamic libraries and prepares them for use.  Flags should be
@@ -134,7 +135,8 @@ typedef enum {
     MUS_MP3,
     MUS_MP3_MAD_UNUSED,
     MUS_FLAC,
-    MUS_MODPLUG_UNUSED
+    MUS_MODPLUG_UNUSED,
+    MUS_OPUS
 } Mix_MusicType;
 
 /* The internal format for a music chunk interpreted via mikmod */
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.a b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.a
index 9cc3ed19..5c780be5 100644
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.a and b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.a differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.dll.a b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.dll.a
index 6b63de0e..ac90388f 100755
Binary files a/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.dll.a and b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.dll.a differ
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.la b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.la
new file mode 100644
index 00000000..f8179ea8
--- /dev/null
+++ b/libs/SDL2_mixer/i686-w64-mingw32/lib/libSDL2_mixer.la
@@ -0,0 +1,41 @@
+# libSDL2_mixer.la - a libtool library file
+# Generated by ltmain.sh (GNU libtool) 2.2.6
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='../bin/SDL2_mixer.dll'
+
+# Names of this library.
+library_names='libSDL2_mixer.dll.a'
+
+# The name of the static archive.
+old_library='libSDL2_mixer.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -L/opt/local/i686-w64-mingw32/lib -lmingw32 /opt/local/i686-w64-mingw32/lib/libSDL2.la -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -lwinmm'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2_mixer.
+current=2
+age=2
+revision=2
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL_mixer/SDL2_mixer-2.0.4/i686-w64-mingw32/lib'
diff --git a/libs/SDL2_mixer/i686-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc b/libs/SDL2_mixer/i686-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
index 76ba57fa..0b841099 100644
--- a/libs/SDL2_mixer/i686-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
+++ b/libs/SDL2_mixer/i686-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
@@ -1,11 +1,11 @@
-prefix=/usr/local/i686-w64-mingw32
+prefix=/opt/local/i686-w64-mingw32
 exec_prefix=${prefix}
 libdir=${exec_prefix}/lib
 includedir=${prefix}/include
 
 Name: SDL2_mixer
 Description: mixer library for Simple DirectMedia Layer
-Version: 2.0.2
+Version: 2.0.4
 Requires: sdl2 >= 2.0.7
 Libs: -L${libdir} -lSDL2_mixer
 Cflags: -I${includedir}/SDL2
diff --git a/libs/SDL2_mixer/include/SDL_mixer.h b/libs/SDL2_mixer/include/SDL_mixer.h
index cbb8ae6b..009d8a2d 100644
--- a/libs/SDL2_mixer/include/SDL_mixer.h
+++ b/libs/SDL2_mixer/include/SDL_mixer.h
@@ -1,6 +1,6 @@
 /*
   SDL_mixer:  An audio mixer library based on the SDL library
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -38,7 +38,7 @@ extern "C" {
 */
 #define SDL_MIXER_MAJOR_VERSION 2
 #define SDL_MIXER_MINOR_VERSION 0
-#define SDL_MIXER_PATCHLEVEL    2
+#define SDL_MIXER_PATCHLEVEL    4
 
 /* This macro can be used to fill a version structure with the compile-time
  * version of the SDL_mixer library.
@@ -80,7 +80,8 @@ typedef enum
     MIX_INIT_MOD    = 0x00000002,
     MIX_INIT_MP3    = 0x00000008,
     MIX_INIT_OGG    = 0x00000010,
-    MIX_INIT_MID    = 0x00000020
+    MIX_INIT_MID    = 0x00000020,
+    MIX_INIT_OPUS   = 0x00000040
 } MIX_InitFlags;
 
 /* Loads dynamic libraries and prepares them for use.  Flags should be
@@ -134,7 +135,8 @@ typedef enum {
     MUS_MP3,
     MUS_MP3_MAD_UNUSED,
     MUS_FLAC,
-    MUS_MODPLUG_UNUSED
+    MUS_MODPLUG_UNUSED,
+    MUS_OPUS
 } Mix_MusicType;
 
 /* The internal format for a music chunk interpreted via mikmod */
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt b/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt
index 94fd3aa6..2e67b77c 100644
--- a/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_mixer/file/default/external
 ---
 
 Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt b/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt
index 59fbf826..a89532db 100644
--- a/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt
@@ -1 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt b/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt
index d7bb85fc..2111cd79 100644
--- a/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt
@@ -1,3 +1,7 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
 
 Main message, to include in "About ..." boxes, etc:
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt
index c2cb6d56..6456dc4e 100644
--- a/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_image/file/default/external
 ---
 
 Copyright (c) 2002-2008 Xiph.org Foundation
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt b/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt
new file mode 100644
index 00000000..adb56a85
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+                    Jean-Marc Valin, Timothy B. Terriberry,
+                    CSIRO, Gregory Maxwell, Mark Borgerding,
+                    Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the 
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt b/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt
new file mode 100644
index 00000000..dfc9681f
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x64/SDL2_mixer.dll b/libs/SDL2_mixer/lib/x64/SDL2_mixer.dll
old mode 100755
new mode 100644
index 116bb1df..40bb1c14
Binary files a/libs/SDL2_mixer/lib/x64/SDL2_mixer.dll and b/libs/SDL2_mixer/lib/x64/SDL2_mixer.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/SDL2_mixer.lib b/libs/SDL2_mixer/lib/x64/SDL2_mixer.lib
old mode 100755
new mode 100644
diff --git a/libs/SDL2_mixer/lib/x64/libFLAC-8.dll b/libs/SDL2_mixer/lib/x64/libFLAC-8.dll
old mode 100755
new mode 100644
index b5603902..71f2e19d
Binary files a/libs/SDL2_mixer/lib/x64/libFLAC-8.dll and b/libs/SDL2_mixer/lib/x64/libFLAC-8.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libmodplug-1.dll b/libs/SDL2_mixer/lib/x64/libmodplug-1.dll
old mode 100755
new mode 100644
index 31509378..7c051267
Binary files a/libs/SDL2_mixer/lib/x64/libmodplug-1.dll and b/libs/SDL2_mixer/lib/x64/libmodplug-1.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libmpg123-0.dll b/libs/SDL2_mixer/lib/x64/libmpg123-0.dll
old mode 100755
new mode 100644
index d222d2dc..c7809b16
Binary files a/libs/SDL2_mixer/lib/x64/libmpg123-0.dll and b/libs/SDL2_mixer/lib/x64/libmpg123-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libogg-0.dll b/libs/SDL2_mixer/lib/x64/libogg-0.dll
old mode 100755
new mode 100644
index 7b94e603..51334815
Binary files a/libs/SDL2_mixer/lib/x64/libogg-0.dll and b/libs/SDL2_mixer/lib/x64/libogg-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libopus-0.dll b/libs/SDL2_mixer/lib/x64/libopus-0.dll
new file mode 100644
index 00000000..9ba6c386
Binary files /dev/null and b/libs/SDL2_mixer/lib/x64/libopus-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libopusfile-0.dll b/libs/SDL2_mixer/lib/x64/libopusfile-0.dll
new file mode 100644
index 00000000..97a88b61
Binary files /dev/null and b/libs/SDL2_mixer/lib/x64/libopusfile-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libvorbis-0.dll b/libs/SDL2_mixer/lib/x64/libvorbis-0.dll
old mode 100755
new mode 100644
index 8d8d6537..f5ae1bf7
Binary files a/libs/SDL2_mixer/lib/x64/libvorbis-0.dll and b/libs/SDL2_mixer/lib/x64/libvorbis-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x64/libvorbisfile-3.dll b/libs/SDL2_mixer/lib/x64/libvorbisfile-3.dll
old mode 100755
new mode 100644
index 08f8f7aa..d0787368
Binary files a/libs/SDL2_mixer/lib/x64/libvorbisfile-3.dll and b/libs/SDL2_mixer/lib/x64/libvorbisfile-3.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt b/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt
index 94fd3aa6..2e67b77c 100644
--- a/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_mixer/file/default/external
 ---
 
 Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt b/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt
index 59fbf826..a89532db 100644
--- a/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt
@@ -1 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt b/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt
index d7bb85fc..2111cd79 100644
--- a/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt
@@ -1,3 +1,7 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
 
 Main message, to include in "About ..." boxes, etc:
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt
index c2cb6d56..6456dc4e 100644
--- a/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_image/file/default/external
 ---
 
 Copyright (c) 2002-2008 Xiph.org Foundation
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt b/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt
new file mode 100644
index 00000000..adb56a85
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+                    Jean-Marc Valin, Timothy B. Terriberry,
+                    CSIRO, Gregory Maxwell, Mark Borgerding,
+                    Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the 
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt b/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt
new file mode 100644
index 00000000..dfc9681f
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x86/SDL2_mixer.dll b/libs/SDL2_mixer/lib/x86/SDL2_mixer.dll
old mode 100755
new mode 100644
index 54ebbb1d..96abfa1a
Binary files a/libs/SDL2_mixer/lib/x86/SDL2_mixer.dll and b/libs/SDL2_mixer/lib/x86/SDL2_mixer.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/SDL2_mixer.lib b/libs/SDL2_mixer/lib/x86/SDL2_mixer.lib
old mode 100755
new mode 100644
diff --git a/libs/SDL2_mixer/lib/x86/libFLAC-8.dll b/libs/SDL2_mixer/lib/x86/libFLAC-8.dll
old mode 100755
new mode 100644
index 1c55ad49..b56ea2a8
Binary files a/libs/SDL2_mixer/lib/x86/libFLAC-8.dll and b/libs/SDL2_mixer/lib/x86/libFLAC-8.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libmodplug-1.dll b/libs/SDL2_mixer/lib/x86/libmodplug-1.dll
old mode 100755
new mode 100644
index a2cba0d6..d66a317d
Binary files a/libs/SDL2_mixer/lib/x86/libmodplug-1.dll and b/libs/SDL2_mixer/lib/x86/libmodplug-1.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libmpg123-0.dll b/libs/SDL2_mixer/lib/x86/libmpg123-0.dll
old mode 100755
new mode 100644
index ca7de300..240298bb
Binary files a/libs/SDL2_mixer/lib/x86/libmpg123-0.dll and b/libs/SDL2_mixer/lib/x86/libmpg123-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libogg-0.dll b/libs/SDL2_mixer/lib/x86/libogg-0.dll
old mode 100755
new mode 100644
index 3abe6ebf..233c0f42
Binary files a/libs/SDL2_mixer/lib/x86/libogg-0.dll and b/libs/SDL2_mixer/lib/x86/libogg-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libopus-0.dll b/libs/SDL2_mixer/lib/x86/libopus-0.dll
new file mode 100644
index 00000000..94ea541d
Binary files /dev/null and b/libs/SDL2_mixer/lib/x86/libopus-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libopusfile-0.dll b/libs/SDL2_mixer/lib/x86/libopusfile-0.dll
new file mode 100644
index 00000000..260796b6
Binary files /dev/null and b/libs/SDL2_mixer/lib/x86/libopusfile-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libvorbis-0.dll b/libs/SDL2_mixer/lib/x86/libvorbis-0.dll
old mode 100755
new mode 100644
index 4e44ef08..4e4aaa54
Binary files a/libs/SDL2_mixer/lib/x86/libvorbis-0.dll and b/libs/SDL2_mixer/lib/x86/libvorbis-0.dll differ
diff --git a/libs/SDL2_mixer/lib/x86/libvorbisfile-3.dll b/libs/SDL2_mixer/lib/x86/libvorbisfile-3.dll
old mode 100755
new mode 100644
index e757eb6d..5d90a235
Binary files a/libs/SDL2_mixer/lib/x86/libvorbisfile-3.dll and b/libs/SDL2_mixer/lib/x86/libvorbisfile-3.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.FLAC.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.FLAC.txt
index 94fd3aa6..2e67b77c 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.FLAC.txt
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.FLAC.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_mixer/file/default/external
 ---
 
 Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.modplug.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.modplug.txt
index 59fbf826..a89532db 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.modplug.txt
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.modplug.txt
@@ -1 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.mpg123.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.mpg123.txt
index d7bb85fc..2111cd79 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.mpg123.txt
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.mpg123.txt
@@ -1,3 +1,7 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
 This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
 
 Main message, to include in "About ..." boxes, etc:
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
index c2cb6d56..6456dc4e 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.ogg-vorbis.txt
@@ -1,5 +1,5 @@
 The source code to this library used with SDL_mixer can be found here:
-http://www.libsdl.org/projects/SDL_mixer/libs/
+https://hg.libsdl.org/SDL_image/file/default/external
 ---
 
 Copyright (c) 2002-2008 Xiph.org Foundation
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opus.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opus.txt
new file mode 100644
index 00000000..adb56a85
--- /dev/null
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+                    Jean-Marc Valin, Timothy B. Terriberry,
+                    CSIRO, Gregory Maxwell, Mark Borgerding,
+                    Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the 
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opusfile.txt b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opusfile.txt
new file mode 100644
index 00000000..dfc9681f
--- /dev/null
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/SDL2_mixer.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/SDL2_mixer.dll
index 116bb1df..40bb1c14 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/SDL2_mixer.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/SDL2_mixer.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libFLAC-8.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libFLAC-8.dll
index b5603902..71f2e19d 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libFLAC-8.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libFLAC-8.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmodplug-1.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmodplug-1.dll
index 31509378..7c051267 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmodplug-1.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmodplug-1.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmpg123-0.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmpg123-0.dll
index d222d2dc..c7809b16 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmpg123-0.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libmpg123-0.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libogg-0.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libogg-0.dll
index 7b94e603..51334815 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libogg-0.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libogg-0.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopus-0.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopus-0.dll
new file mode 100644
index 00000000..9ba6c386
Binary files /dev/null and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopus-0.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopusfile-0.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopusfile-0.dll
new file mode 100644
index 00000000..97a88b61
Binary files /dev/null and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libopusfile-0.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbis-0.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbis-0.dll
index 8d8d6537..f5ae1bf7 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbis-0.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbis-0.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbisfile-3.dll b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbisfile-3.dll
index 08f8f7aa..d0787368 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbisfile-3.dll and b/libs/SDL2_mixer/x86_64-w64-mingw32/bin/libvorbisfile-3.dll differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/include/SDL2/SDL_mixer.h b/libs/SDL2_mixer/x86_64-w64-mingw32/include/SDL2/SDL_mixer.h
index cbb8ae6b..009d8a2d 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/include/SDL2/SDL_mixer.h
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/include/SDL2/SDL_mixer.h
@@ -1,6 +1,6 @@
 /*
   SDL_mixer:  An audio mixer library based on the SDL library
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -38,7 +38,7 @@ extern "C" {
 */
 #define SDL_MIXER_MAJOR_VERSION 2
 #define SDL_MIXER_MINOR_VERSION 0
-#define SDL_MIXER_PATCHLEVEL    2
+#define SDL_MIXER_PATCHLEVEL    4
 
 /* This macro can be used to fill a version structure with the compile-time
  * version of the SDL_mixer library.
@@ -80,7 +80,8 @@ typedef enum
     MIX_INIT_MOD    = 0x00000002,
     MIX_INIT_MP3    = 0x00000008,
     MIX_INIT_OGG    = 0x00000010,
-    MIX_INIT_MID    = 0x00000020
+    MIX_INIT_MID    = 0x00000020,
+    MIX_INIT_OPUS   = 0x00000040
 } MIX_InitFlags;
 
 /* Loads dynamic libraries and prepares them for use.  Flags should be
@@ -134,7 +135,8 @@ typedef enum {
     MUS_MP3,
     MUS_MP3_MAD_UNUSED,
     MUS_FLAC,
-    MUS_MODPLUG_UNUSED
+    MUS_MODPLUG_UNUSED,
+    MUS_OPUS
 } Mix_MusicType;
 
 /* The internal format for a music chunk interpreted via mikmod */
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.a b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.a
index 7d39a1f6..b6483716 100644
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.a and b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.a differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.dll.a b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.dll.a
index d812f5c8..82a4bef0 100755
Binary files a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.dll.a and b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.dll.a differ
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.la b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.la
new file mode 100644
index 00000000..dba212c5
--- /dev/null
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/libSDL2_mixer.la
@@ -0,0 +1,41 @@
+# libSDL2_mixer.la - a libtool library file
+# Generated by ltmain.sh (GNU libtool) 2.2.6
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='../bin/SDL2_mixer.dll'
+
+# Names of this library.
+library_names='libSDL2_mixer.dll.a'
+
+# The name of the static archive.
+old_library='libSDL2_mixer.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -L/opt/local/x86_64-w64-mingw32/lib -lmingw32 /opt/local/x86_64-w64-mingw32/lib/libSDL2.la -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -lwinmm'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2_mixer.
+current=2
+age=2
+revision=2
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL_mixer/SDL2_mixer-2.0.4/x86_64-w64-mingw32/lib'
diff --git a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
index 56c30ccf..b7984169 100644
--- a/libs/SDL2_mixer/x86_64-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
+++ b/libs/SDL2_mixer/x86_64-w64-mingw32/lib/pkgconfig/SDL2_mixer.pc
@@ -1,11 +1,11 @@
-prefix=/usr/local/x86_64-w64-mingw32
+prefix=/opt/local/x86_64-w64-mingw32
 exec_prefix=${prefix}
 libdir=${exec_prefix}/lib
 includedir=${prefix}/include
 
 Name: SDL2_mixer
 Description: mixer library for Simple DirectMedia Layer
-Version: 2.0.2
+Version: 2.0.4
 Requires: sdl2 >= 2.0.7
 Libs: -L${libdir} -lSDL2_mixer
 Cflags: -I${includedir}/SDL2
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 46a42a92..0602de9d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -350,6 +350,7 @@ if(${SRB2_CONFIG_HWRENDER})
 	set(SRB2_HWRENDER_SOURCES
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_bsp.c
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_cache.c
+		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_clip.c
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_draw.c
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_light.c
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_main.c
@@ -358,6 +359,7 @@ if(${SRB2_CONFIG_HWRENDER})
 	)
 
 	set (SRB2_HWRENDER_HEADERS
+		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_clip.h
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_data.h
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_defs.h
 		${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_dll.h
diff --git a/src/Makefile b/src/Makefile
index 7a67c3f0..b159de3b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -269,7 +269,7 @@ ifndef DC
 endif
 	OPTS+=-DHWRENDER
 	OBJS+=$(OBJDIR)/hw_bsp.o $(OBJDIR)/hw_draw.o $(OBJDIR)/hw_light.o \
-		 $(OBJDIR)/hw_main.o $(OBJDIR)/hw_md2.o $(OBJDIR)/hw_cache.o $(OBJDIR)/hw_trick.o
+		 $(OBJDIR)/hw_main.o $(OBJDIR)/hw_clip.o $(OBJDIR)/hw_md2.o $(OBJDIR)/hw_cache.o $(OBJDIR)/hw_trick.o
 endif
 
 ifdef NOHS
@@ -719,7 +719,7 @@ ifdef MINGW
 $(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
  doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
  command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
- hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
+ hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
  d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
  p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
 	$(CC) $(CFLAGS) $(WFLAGS) -c $< -o $@
@@ -727,7 +727,7 @@ else
 $(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
  doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
  command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
- hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
+ hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
  d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
  p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
 	$(CC) $(CFLAGS) $(WFLAGS) -I/usr/X11R6/include -c $< -o $@
@@ -880,7 +880,7 @@ ifndef NOHW
 $(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
  doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
  command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
- hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
+ hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
  d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
  p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
 	$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@
@@ -888,7 +888,7 @@ $(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h
 $(OBJDIR)/ogl_win.o: hardware/r_opengl/ogl_win.c hardware/r_opengl/r_opengl.h \
  doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
  command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
- hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
+ hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
  d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
  p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
 	$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@
@@ -896,7 +896,7 @@ $(OBJDIR)/ogl_win.o: hardware/r_opengl/ogl_win.c hardware/r_opengl/r_opengl.h \
 $(OBJDIR)/r_minigl.o: hardware/r_minigl/r_minigl.c hardware/r_opengl/r_opengl.h \
  doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
  command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
- hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
+ hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
  d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
  p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
 	$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@
diff --git a/src/byteptr.h b/src/byteptr.h
index 410d7c00..364e6520 100644
--- a/src/byteptr.h
+++ b/src/byteptr.h
@@ -15,7 +15,9 @@
 #define DEALIGNED
 #endif
 
-#ifndef _BIG_ENDIAN
+#include "endian.h"
+
+#ifndef SRB2_BIG_ENDIAN
 //
 // Little-endian machines
 //
@@ -75,7 +77,7 @@
 #define READANGLE(p)        *((angle_t *)p)++
 #endif
 
-#else //_BIG_ENDIAN
+#else //SRB2_BIG_ENDIAN
 //
 // definitions for big-endian machines with alignment constraints.
 //
@@ -144,7 +146,7 @@ FUNCINLINE static ATTRINLINE UINT32 readulong(void *ptr)
 #define READCHAR(p)         ({    char *p_tmp = (   char *)p;    char b =        *p_tmp; p_tmp++; p = (void *)p_tmp; b; })
 #define READFIXED(p)        ({ fixed_t *p_tmp = (fixed_t *)p; fixed_t b =   readlong(p); p_tmp++; p = (void *)p_tmp; b; })
 #define READANGLE(p)        ({ angle_t *p_tmp = (angle_t *)p; angle_t b =  readulong(p); p_tmp++; p = (void *)p_tmp; b; })
-#endif //_BIG_ENDIAN
+#endif //SRB2_BIG_ENDIAN
 
 #undef DEALIGNED
 
diff --git a/src/d_main.c b/src/d_main.c
index 17053267..b03c0941 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -170,7 +170,7 @@ void D_PostEvent(const event_t *ev)
 	eventhead = (eventhead+1) & (MAXEVENTS-1);
 }
 // just for lock this function
-#ifndef DOXYGEN
+#if defined (PC_DOS) && !defined (DOXYGEN)
 void D_PostEvent_end(void) {};
 #endif
 
@@ -417,10 +417,13 @@ static void D_Display(void)
 			}
 
 			// Image postprocessing effect
-			if (postimgtype)
-				V_DoPostProcessor(0, postimgtype, postimgparam);
-			if (postimgtype2)
-				V_DoPostProcessor(1, postimgtype2, postimgparam2);
+			if (rendermode == render_soft)
+			{
+				if (postimgtype)
+					V_DoPostProcessor(0, postimgtype, postimgparam);
+				if (postimgtype2)
+					V_DoPostProcessor(1, postimgtype2, postimgparam2);
+			}
 		}
 
 		if (lastdraw)
@@ -761,10 +764,6 @@ static inline void D_CleanFile(void)
 	}
 }
 
-#ifndef _MAX_PATH
-#define _MAX_PATH MAX_WADPATH
-#endif
-
 // ==========================================================================
 // Identify the SRB2 version, and IWAD file to use.
 // ==========================================================================
diff --git a/src/d_main.h b/src/d_main.h
index d73b19d1..4c9c99ea 100644
--- a/src/d_main.h
+++ b/src/d_main.h
@@ -40,8 +40,8 @@ void D_SRB2Main(void);
 
 // Called by IO functions when input is detected.
 void D_PostEvent(const event_t *ev);
-#ifndef DOXYGEN
-FUNCMATH void D_PostEvent_end(void);    // delimiter for locking memory
+#if defined (PC_DOS) && !defined (DOXYGEN)
+void D_PostEvent_end(void);    // delimiter for locking memory
 #endif
 
 void D_ProcessEvents(void);
diff --git a/src/d_netcmd.c b/src/d_netcmd.c
index 885c811d..3a7c5499 100644
--- a/src/d_netcmd.c
+++ b/src/d_netcmd.c
@@ -128,8 +128,6 @@ FUNCNORETURN static ATTRNORETURN void Command_Quit_f(void);
 static void Command_Playintro_f(void);
 
 static void Command_Displayplayer_f(void);
-static void Command_Tunes_f(void);
-static void Command_RestartAudio_f(void);
 
 static void Command_ExitLevel_f(void);
 static void Command_Showmap_f(void);
@@ -319,7 +317,6 @@ consvar_t cv_overtime = {"overtime", "Yes", CV_NETVAR, CV_YesNo, NULL, 0, NULL,
 consvar_t cv_rollingdemos = {"rollingdemos", "On", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
 
 consvar_t cv_timetic = {"timerres", "Normal", CV_SAVE, timetic_cons_t, NULL, 0, NULL, NULL, 0, 0, NULL}; // use tics in display
-consvar_t cv_resetmusic = {"resetmusic", "No", CV_SAVE, CV_YesNo, NULL, 0, NULL, NULL, 0, 0, NULL};
 
 static CV_PossibleValue_t pointlimit_cons_t[] = {{0, "MIN"}, {999999990, "MAX"}, {0, NULL}};
 consvar_t cv_pointlimit = {"pointlimit", "0", CV_NETVAR|CV_CALL|CV_NOINIT, pointlimit_cons_t,
@@ -668,9 +665,6 @@ void D_RegisterClientCommands(void)
 	CV_RegisterVar(&cv_ghost_guest);
 
 	COM_AddCommand("displayplayer", Command_Displayplayer_f);
-	COM_AddCommand("tunes", Command_Tunes_f);
-	COM_AddCommand("restartaudio", Command_RestartAudio_f);
-	CV_RegisterVar(&cv_resetmusic);
 
 	// FIXME: not to be here.. but needs be done for config loading
 	CV_RegisterVar(&cv_usegamma);
@@ -3881,94 +3875,6 @@ static void Command_Displayplayer_f(void)
 	CONS_Printf(M_GetText("Displayplayer is %d\n"), displayplayer);
 }
 
-static void Command_Tunes_f(void)
-{
-	const char *tunearg;
-	UINT16 tunenum, track = 0;
-	const size_t argc = COM_Argc();
-
-	if (argc < 2) //tunes slot ...
-	{
-		CONS_Printf("tunes <name/num> [track] [speed] / <-show> / <-default> / <-none>:\n");
-		CONS_Printf(M_GetText("Play an arbitrary music lump. If a map number is used, 'MAP##M' is played.\n"));
-		CONS_Printf(M_GetText("If the format supports multiple songs, you can specify which one to play.\n\n"));
-		CONS_Printf(M_GetText("* With \"-show\", shows the currently playing tune and track.\n"));
-		CONS_Printf(M_GetText("* With \"-default\", returns to the default music for the map.\n"));
-		CONS_Printf(M_GetText("* With \"-none\", any music playing will be stopped.\n"));
-		return;
-	}
-
-	tunearg = COM_Argv(1);
-	tunenum = (UINT16)atoi(tunearg);
-	track = 0;
-
-	if (!strcasecmp(tunearg, "-show"))
-	{
-		CONS_Printf(M_GetText("The current tune is: %s [track %d]\n"),
-			mapmusname, (mapmusflags & MUSIC_TRACKMASK));
-		return;
-	}
-	if (!strcasecmp(tunearg, "-none"))
-	{
-		S_StopMusic();
-		return;
-	}
-	else if (!strcasecmp(tunearg, "-default"))
-	{
-		tunearg = mapheaderinfo[gamemap-1]->musname;
-		track = mapheaderinfo[gamemap-1]->mustrack;
-	}
-	else if (!tunearg[2] && toupper(tunearg[0]) >= 'A' && toupper(tunearg[0]) <= 'Z')
-		tunenum = (UINT16)M_MapNumber(tunearg[0], tunearg[1]);
-
-	if (tunenum && tunenum >= 1036)
-	{
-		CONS_Alert(CONS_NOTICE, M_GetText("Valid music slots are 1 to 1035.\n"));
-		return;
-	}
-	if (!tunenum && strlen(tunearg) > 6) // This is automatic -- just show the error just in case
-		CONS_Alert(CONS_NOTICE, M_GetText("Music name too long - truncated to six characters.\n"));
-
-	if (argc > 2)
-		track = (UINT16)atoi(COM_Argv(2))-1;
-
-	if (tunenum)
-		snprintf(mapmusname, 7, "%sM", G_BuildMapName(tunenum));
-	else
-		strncpy(mapmusname, tunearg, 7);
-	mapmusname[6] = 0;
-	mapmusflags = (track & MUSIC_TRACKMASK);
-
-	S_ChangeMusic(mapmusname, mapmusflags, true);
-
-	if (argc > 3)
-	{
-		float speed = (float)atof(COM_Argv(3));
-		if (speed > 0.0f)
-			S_SpeedMusic(speed);
-	}
-}
-
-static void Command_RestartAudio_f(void)
-{
-	if (dedicated)  // No point in doing anything if game is a dedicated server.
-		return;
-
-	S_StopMusic();
-	S_StopSounds();
-	I_ShutdownMusic();
-	I_ShutdownSound();
-	I_StartupSound();
-	I_InitMusic();
-
-// These must be called or no sound and music until manually set.
-
-	I_SetSfxVolume(cv_soundvolume.value);
-	S_SetMusicVolume(cv_digmusicvolume.value, cv_midimusicvolume.value);
-	if (Playing()) // Gotta make sure the player is in a level
-		P_RestoreMusic(&players[consoleplayer]);
-}
-
 /** Quits a game and returns to the title screen.
   *
   */
diff --git a/src/d_netcmd.h b/src/d_netcmd.h
index 023bbd09..d0bac3d5 100644
--- a/src/d_netcmd.h
+++ b/src/d_netcmd.h
@@ -20,6 +20,12 @@
 // console vars
 extern consvar_t cv_playername;
 extern consvar_t cv_playercolor;
+extern consvar_t cv_skin;
+// secondary splitscreen player
+extern consvar_t cv_playername2;
+extern consvar_t cv_playercolor2;
+extern consvar_t cv_skin2;
+
 #ifdef SEENAMES
 extern consvar_t cv_seenames, cv_allowseenames;
 #endif
@@ -32,7 +38,6 @@ extern consvar_t cv_joyport2;
 #endif
 extern consvar_t cv_joyscale;
 extern consvar_t cv_joyscale2;
-extern consvar_t cv_controlperkey;
 
 // splitscreen with second mouse
 extern consvar_t cv_mouse2port;
@@ -40,11 +45,6 @@ extern consvar_t cv_usemouse2;
 #if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON)
 extern consvar_t cv_mouse2opt;
 #endif
-extern consvar_t cv_invertmouse2;
-extern consvar_t cv_alwaysfreelook2;
-extern consvar_t cv_mousemove2;
-extern consvar_t cv_mousesens2;
-extern consvar_t cv_mouseysens2;
 
 // normally in p_mobj but the .h is not read
 extern consvar_t cv_itemrespawntime;
@@ -53,13 +53,6 @@ extern consvar_t cv_itemrespawn;
 extern consvar_t cv_flagtime;
 extern consvar_t cv_suddendeath;
 
-extern consvar_t cv_skin;
-
-// secondary splitscreen player
-extern consvar_t cv_playername2;
-extern consvar_t cv_playercolor2;
-extern consvar_t cv_skin2;
-
 extern consvar_t cv_touchtag;
 extern consvar_t cv_hidetime;
 
@@ -77,9 +70,6 @@ extern consvar_t cv_autobalance;
 extern consvar_t cv_teamscramble;
 extern consvar_t cv_scrambleonchange;
 
-extern consvar_t cv_useranalog, cv_useranalog2;
-extern consvar_t cv_analog, cv_analog2;
-
 extern consvar_t cv_netstat;
 #ifdef WALLSPLATS
 extern consvar_t cv_splats;
@@ -109,8 +99,6 @@ extern consvar_t cv_startinglives;
 // for F_finale.c
 extern consvar_t cv_rollingdemos;
 
-extern consvar_t cv_resetmusic;
-
 extern consvar_t cv_ringslinger, cv_soundtest;
 
 extern consvar_t cv_specialrings, cv_powerstones, cv_matchboxes, cv_competitionboxes;
@@ -121,17 +109,7 @@ extern consvar_t cv_maxping;
 
 extern consvar_t cv_skipmapcheck;
 
-extern consvar_t cv_sleep, cv_screenshot_option, cv_screenshot_folder;
-
-extern consvar_t cv_moviemode;
-
-extern consvar_t cv_zlib_level, cv_zlib_memory, cv_zlib_strategy;
-
-extern consvar_t cv_zlib_window_bits, cv_zlib_levela, cv_zlib_memorya;
-
-extern consvar_t cv_zlib_strategya, cv_zlib_window_bitsa;
-
-extern consvar_t cv_apng_delay;
+extern consvar_t cv_sleep;
 
 typedef enum
 {
@@ -219,5 +197,3 @@ void D_SetPassword(const char *pw);
 UINT8 CanChangeSkin(INT32 playernum);
 
 #endif
-
-
diff --git a/src/dehacked.c b/src/dehacked.c
index b7e874b1..2fed963f 100644
--- a/src/dehacked.c
+++ b/src/dehacked.c
@@ -7769,7 +7769,7 @@ fixed_t get_number(const char *word)
 #endif
 }
 
-void FUNCMATH DEH_Check(void)
+void DEH_Check(void)
 {
 #if defined(_DEBUG) || defined(PARANOIA)
 	const size_t dehstates = sizeof(STATE_LIST)/sizeof(const char*);
diff --git a/src/doomdef.h b/src/doomdef.h
index 7f641558..ff09144e 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -502,4 +502,11 @@ extern const char *compdate, *comptime, *comprevision, *compbranch;
 /// \note   Required for proper collision with moving sloped surfaces that have sector specials on them.
 //#define SECTORSPECIALSAFTERTHINK
 
+/// FINALLY some real clipping that doesn't make walls dissappear AND speeds the game up
+/// (that was the original comment from SRB2CB, sadly it is a lie and actually slows game down)
+/// on the bright side it fixes some weird issues with translucent walls
+/// \note	SRB2CB port.
+///      	SRB2CB itself ported this from PrBoom+
+#define NEWCLIP
+
 #endif // __DOOMDEF__
diff --git a/src/doomtype.h b/src/doomtype.h
index a711b466..67c279aa 100644
--- a/src/doomtype.h
+++ b/src/doomtype.h
@@ -44,12 +44,13 @@
 typedef long ssize_t;
 
 /* Older Visual C++ headers don't have the Win64-compatible typedefs... */
-#if ((_MSC_VER <= 1200) && (!defined(DWORD_PTR)))
-#define DWORD_PTR DWORD
-#endif
-
-#if ((_MSC_VER <= 1200) && (!defined(PDWORD_PTR)))
-#define PDWORD_PTR PDWORD
+#if (_MSC_VER <= 1200)
+	#ifndef DWORD_PTR
+		#define DWORD_PTR DWORD
+	#endif
+	#ifndef PDWORD_PTR
+		#define PDWORD_PTR PDWORD
+	#endif
 #endif
 #elif defined (_arch_dreamcast) // KOS Dreamcast
 #include <arch/types.h>
@@ -97,12 +98,14 @@ typedef long ssize_t;
 #define NOIPX
 #endif
 
+/* Strings and some misc platform specific stuff */
+
 #if defined (_MSC_VER) || defined (__OS2__)
 	// Microsoft VisualC++
 #ifdef _MSC_VER
 #if (_MSC_VER <= 1800) // MSVC 2013 and back
 	#define snprintf                _snprintf
-#if (_MSC_VER <= 1200) // MSVC 2012 and back
+#if (_MSC_VER <= 1200) // MSVC 6.0 and back
 	#define vsnprintf               _vsnprintf
 #endif
 #endif
@@ -178,6 +181,8 @@ size_t strlcpy(char *dst, const char *src, size_t siz);
 // not the number of bytes in the buffer.
 #define STRBUFCPY(dst,src) strlcpy(dst, src, sizeof dst)
 
+/* Boolean type definition */
+
 // \note __BYTEBOOL__ used to be set above if "macintosh" was defined,
 // if macintosh's version of boolean type isn't needed anymore, then isn't this macro pointless now?
 #ifndef __BYTEBOOL__
@@ -185,7 +190,7 @@ size_t strlcpy(char *dst, const char *src, size_t siz);
 
 	//faB: clean that up !!
 	#if defined( _MSC_VER)  && (_MSC_VER >= 1800) // MSVC 2013 and forward
-	#include "stdbool.h"
+		#include "stdbool.h"
 	#elif (defined (_WIN32) || (defined (_WIN32_WCE) && !defined (__GNUC__))) && !defined (_XBOX)
 		#define false   FALSE           // use windows types
 		#define true    TRUE
@@ -240,93 +245,71 @@ size_t strlcpy(char *dst, const char *src, size_t siz);
 #define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */
 #endif
 
-union FColorRGBA
-{
-	UINT32 rgba;
-	struct
-	{
-		UINT8 red;
-		UINT8 green;
-		UINT8 blue;
-		UINT8 alpha;
-	} s;
-} ATTRPACK;
-typedef union FColorRGBA RGBA_t;
-
-typedef enum
-{
-	postimg_none,
-	postimg_water,
-	postimg_motion,
-	postimg_flip,
-	postimg_heat
-} postimg_t;
-
-typedef UINT32 lumpnum_t; // 16 : 16 unsigned long (wad num: lump num)
-#define LUMPERROR UINT32_MAX
-
-typedef UINT32 tic_t;
-#define INFTICS UINT32_MAX
-
-#ifdef _BIG_ENDIAN
-#define UINT2RGBA(a) a
-#else
-#define UINT2RGBA(a) (UINT32)((a&0xff)<<24)|((a&0xff00)<<8)|((a&0xff0000)>>8)|(((UINT32)a&0xff000000)>>24)
-#endif
+/* Compiler-specific attributes and other macros */
 
 #ifdef __GNUC__ // __attribute__ ((X))
-#define FUNCNORETURN __attribute__ ((noreturn))
-#if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) && defined (__MINGW32__)
-#include "inttypes.h"
-#if 0 //defined  (__USE_MINGW_ANSI_STDIO) && __USE_MINGW_ANSI_STDIO > 0
-#define FUNCPRINTF __attribute__ ((format(gnu_printf, 1, 2)))
-#define FUNCDEBUG  __attribute__ ((format(gnu_printf, 2, 3)))
-#define FUNCIERROR __attribute__ ((format(gnu_printf, 1, 2),noreturn))
-#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
-#define FUNCPRINTF __attribute__ ((format(ms_printf, 1, 2)))
-#define FUNCDEBUG  __attribute__ ((format(ms_printf, 2, 3)))
-#define FUNCIERROR __attribute__ ((format(ms_printf, 1, 2),noreturn))
-#else
-#define FUNCPRINTF __attribute__ ((format(printf, 1, 2)))
-#define FUNCDEBUG  __attribute__ ((format(printf, 2, 3)))
-#define FUNCIERROR __attribute__ ((format(printf, 1, 2),noreturn))
-#endif
-#else
-#define FUNCPRINTF __attribute__ ((format(printf, 1, 2)))
-#define FUNCDEBUG  __attribute__ ((format(printf, 2, 3)))
-#define FUNCIERROR __attribute__ ((format(printf, 1, 2),noreturn))
-#endif
-#ifndef FUNCIERROR
-#define FUNCIERROR __attribute__ ((noreturn))
-#endif
-#define FUNCMATH __attribute__((const))
-#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
-#define FUNCDEAD __attribute__ ((deprecated))
-#define FUNCINLINE __attribute__((always_inline))
-#define FUNCNONNULL __attribute__((nonnull))
-#endif
-#define FUNCNOINLINE __attribute__((noinline))
-#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
-#ifdef __i386__ // i386 only
-#define FUNCTARGET(X)  __attribute__ ((__target__ (X)))
-#endif
-#endif
-#if defined (__MINGW32__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
-#define ATTRPACK __attribute__((packed, gcc_struct))
-#else
-#define ATTRPACK __attribute__((packed))
-#endif
-#define ATTRUNUSED __attribute__((unused))
-#ifdef _XBOX
-#define FILESTAMP I_OutputMsg("%s:%d\n",__FILE__,__LINE__);
-#define XBOXSTATIC static
-#endif
+	#define FUNCNORETURN __attribute__ ((noreturn))
+
+	#if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) && defined (__MINGW32__) // MinGW, >= GCC 4.1
+		#include "inttypes.h"
+		#if 0 //defined  (__USE_MINGW_ANSI_STDIO) && __USE_MINGW_ANSI_STDIO > 0
+			#define FUNCPRINTF __attribute__ ((format(gnu_printf, 1, 2)))
+			#define FUNCDEBUG  __attribute__ ((format(gnu_printf, 2, 3)))
+			#define FUNCIERROR __attribute__ ((format(gnu_printf, 1, 2),noreturn))
+		#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) // >= GCC 4.4
+			#define FUNCPRINTF __attribute__ ((format(ms_printf, 1, 2)))
+			#define FUNCDEBUG  __attribute__ ((format(ms_printf, 2, 3)))
+			#define FUNCIERROR __attribute__ ((format(ms_printf, 1, 2),noreturn))
+		#else
+			#define FUNCPRINTF __attribute__ ((format(printf, 1, 2)))
+			#define FUNCDEBUG  __attribute__ ((format(printf, 2, 3)))
+			#define FUNCIERROR __attribute__ ((format(printf, 1, 2),noreturn))
+		#endif
+	#else
+		#define FUNCPRINTF __attribute__ ((format(printf, 1, 2)))
+		#define FUNCDEBUG  __attribute__ ((format(printf, 2, 3)))
+		#define FUNCIERROR __attribute__ ((format(printf, 1, 2),noreturn))
+	#endif
+
+	#ifndef FUNCIERROR
+		#define FUNCIERROR __attribute__ ((noreturn))
+	#endif
+
+	#define FUNCMATH __attribute__((const))
+
+	#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) // >= GCC 3.1
+		#define FUNCDEAD __attribute__ ((deprecated))
+		#define FUNCINLINE __attribute__((always_inline))
+		#define FUNCNONNULL __attribute__((nonnull))
+	#endif
+
+	#define FUNCNOINLINE __attribute__((noinline))
+
+	#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) // >= GCC 4.4
+		#ifdef __i386__ // i386 only
+			#define FUNCTARGET(X)  __attribute__ ((__target__ (X)))
+		#endif
+	#endif
+
+	#if defined (__MINGW32__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) // MinGW, >= GCC 3.4
+		#define ATTRPACK __attribute__((packed, gcc_struct))
+	#else
+		#define ATTRPACK __attribute__((packed))
+	#endif
+
+	#define ATTRUNUSED __attribute__((unused))
+
+	// Xbox-only macros
+	#ifdef _XBOX
+		#define FILESTAMP I_OutputMsg("%s:%d\n",__FILE__,__LINE__);
+		#define XBOXSTATIC static
+	#endif
 #elif defined (_MSC_VER)
-#define ATTRNORETURN __declspec(noreturn)
-#define ATTRINLINE __forceinline
-#if _MSC_VER > 1200
-#define ATTRNOINLINE __declspec(noinline)
-#endif
+	#define ATTRNORETURN __declspec(noreturn)
+	#define ATTRINLINE __forceinline
+	#if _MSC_VER > 1200 // >= MSVC 6.0
+		#define ATTRNOINLINE __declspec(noinline)
+	#endif
 #endif
 
 #ifndef FUNCPRINTF
@@ -380,4 +363,43 @@ typedef UINT32 tic_t;
 #ifndef FILESTAMP
 #define FILESTAMP
 #endif
+
+/* Miscellaneous types that don't fit anywhere else (Can this be changed?) */
+
+union FColorRGBA
+{
+	UINT32 rgba;
+	struct
+	{
+		UINT8 red;
+		UINT8 green;
+		UINT8 blue;
+		UINT8 alpha;
+	} s;
+} ATTRPACK;
+typedef union FColorRGBA RGBA_t;
+
+typedef enum
+{
+	postimg_none,
+	postimg_water,
+	postimg_motion,
+	postimg_flip,
+	postimg_heat
+} postimg_t;
+
+typedef UINT32 lumpnum_t; // 16 : 16 unsigned long (wad num: lump num)
+#define LUMPERROR UINT32_MAX
+
+typedef UINT32 tic_t;
+#define INFTICS UINT32_MAX
+
+#include "endian.h" // This is needed to make sure the below macro acts correctly in big endian builds
+
+#ifdef SRB2_BIG_ENDIAN
+#define UINT2RGBA(a) a
+#else
+#define UINT2RGBA(a) (UINT32)((a&0xff)<<24)|((a&0xff00)<<8)|((a&0xff0000)>>8)|(((UINT32)a&0xff000000)>>24)
+#endif
+
 #endif //__DOOMTYPE__
diff --git a/src/f_finale.c b/src/f_finale.c
index fb1387c1..a50e4a5b 100644
--- a/src/f_finale.c
+++ b/src/f_finale.c
@@ -1401,6 +1401,7 @@ void F_StartGameEnd(void)
 //
 void F_GameEndDrawer(void)
 {
+	// this function does nothing
 }
 
 //
diff --git a/src/f_finale.h b/src/f_finale.h
index 1f23643b..8ee02bdf 100644
--- a/src/f_finale.h
+++ b/src/f_finale.h
@@ -35,7 +35,7 @@ void F_CutsceneTicker(void);
 void F_TitleDemoTicker(void);
 
 // Called by main loop.
-FUNCMATH void F_GameEndDrawer(void);
+void F_GameEndDrawer(void);
 void F_IntroDrawer(void);
 void F_TitleScreenDrawer(void);
 
diff --git a/src/g_game.h b/src/g_game.h
index ada82404..ba414269 100644
--- a/src/g_game.h
+++ b/src/g_game.h
@@ -56,6 +56,9 @@ extern INT16 rw_maximums[NUM_WEAPONS];
 // used in game menu
 extern consvar_t cv_crosshair, cv_crosshair2;
 extern consvar_t cv_invertmouse, cv_alwaysfreelook, cv_mousemove;
+extern consvar_t cv_invertmouse2, cv_alwaysfreelook2, cv_mousemove2;
+extern consvar_t cv_useranalog, cv_useranalog2;
+extern consvar_t cv_analog, cv_analog2;
 extern consvar_t cv_sideaxis,cv_turnaxis,cv_moveaxis,cv_lookaxis,cv_fireaxis,cv_firenaxis;
 extern consvar_t cv_sideaxis2,cv_turnaxis2,cv_moveaxis2,cv_lookaxis2,cv_fireaxis2,cv_firenaxis2;
 extern consvar_t cv_ghost_bestscore, cv_ghost_besttime, cv_ghost_bestrings, cv_ghost_last, cv_ghost_guest;
diff --git a/src/g_input.h b/src/g_input.h
index d6533932..f42ad89d 100644
--- a/src/g_input.h
+++ b/src/g_input.h
@@ -126,6 +126,8 @@ typedef enum
 
 // mouse values are used once
 extern consvar_t cv_mousesens, cv_mouseysens;
+extern consvar_t cv_mousesens2, cv_mouseysens2;
+extern consvar_t cv_controlperkey;
 
 extern INT32 mousex, mousey;
 extern INT32 mlooky; //mousey with mlookSensitivity
diff --git a/src/hardware/hw_bsp.c b/src/hardware/hw_bsp.c
index a32609fc..fa5bce30 100644
--- a/src/hardware/hw_bsp.c
+++ b/src/hardware/hw_bsp.c
@@ -878,8 +878,8 @@ static void AdjustSegs(void)
 		count = subsectors[i].numlines;
 		lseg = &segs[subsectors[i].firstline];
 		p = extrasubsectors[i].planepoly;
-		if (!p)
-			continue;
+		//if (!p)
+			//continue;
 		for (; count--; lseg++)
 		{
 			float distv1,distv2,tmp;
@@ -892,29 +892,31 @@ static void AdjustSegs(void)
 				continue;
 #endif
 
-			for (j = 0; j < p->numpts; j++)
-			{
-				distv1 = p->pts[j].x - FIXED_TO_FLOAT(lseg->v1->x);
-				tmp    = p->pts[j].y - FIXED_TO_FLOAT(lseg->v1->y);
-				distv1 = distv1*distv1+tmp*tmp;
-				if (distv1 <= nearv1)
+			if (p) {
+				for (j = 0; j < p->numpts; j++)
 				{
-					v1found = j;
-					nearv1 = distv1;
-				}
-				// the same with v2
-				distv2 = p->pts[j].x - FIXED_TO_FLOAT(lseg->v2->x);
-				tmp    = p->pts[j].y - FIXED_TO_FLOAT(lseg->v2->y);
-				distv2 = distv2*distv2+tmp*tmp;
-				if (distv2 <= nearv2)
-				{
-					v2found = j;
-					nearv2 = distv2;
+					distv1 = p->pts[j].x - FIXED_TO_FLOAT(lseg->v1->x);
+					tmp    = p->pts[j].y - FIXED_TO_FLOAT(lseg->v1->y);
+					distv1 = distv1*distv1+tmp*tmp;
+					if (distv1 <= nearv1)
+					{
+						v1found = j;
+						nearv1 = distv1;
+					}
+					// the same with v2
+					distv2 = p->pts[j].x - FIXED_TO_FLOAT(lseg->v2->x);
+					tmp    = p->pts[j].y - FIXED_TO_FLOAT(lseg->v2->y);
+					distv2 = distv2*distv2+tmp*tmp;
+					if (distv2 <= nearv2)
+					{
+						v2found = j;
+						nearv2 = distv2;
+					}
 				}
 			}
-			if (nearv1 <= NEARDIST*NEARDIST)
+			if (p && nearv1 <= NEARDIST*NEARDIST)
 				// share vertice with segs
-				lseg->v1 = (vertex_t *)&(p->pts[v1found]);
+				lseg->pv1 = &(p->pts[v1found]);
 			else
 			{
 				// BP: here we can do better, using PointInSeg and compute
@@ -925,24 +927,24 @@ static void AdjustSegs(void)
 				polyvertex_t *pv = HWR_AllocVertex();
 				pv->x = FIXED_TO_FLOAT(lseg->v1->x);
 				pv->y = FIXED_TO_FLOAT(lseg->v1->y);
-				lseg->v1 = (vertex_t *)pv;
+				lseg->pv1 = pv;
 			}
-			if (nearv2 <= NEARDIST*NEARDIST)
-				lseg->v2 = (vertex_t *)&(p->pts[v2found]);
+			if (p && nearv2 <= NEARDIST*NEARDIST)
+				lseg->pv2 = &(p->pts[v2found]);
 			else
 			{
 				polyvertex_t *pv = HWR_AllocVertex();
 				pv->x = FIXED_TO_FLOAT(lseg->v2->x);
 				pv->y = FIXED_TO_FLOAT(lseg->v2->y);
-				lseg->v2 = (vertex_t *)pv;
+				lseg->pv2 = pv;
 			}
 
 			// recompute length
 			{
 				float x,y;
-				x = ((polyvertex_t *)lseg->v2)->x - ((polyvertex_t *)lseg->v1)->x
+				x = ((polyvertex_t *)lseg->pv2)->x - ((polyvertex_t *)lseg->pv1)->x
 					+ FIXED_TO_FLOAT(FRACUNIT/2);
-				y = ((polyvertex_t *)lseg->v2)->y - ((polyvertex_t *)lseg->v1)->y
+				y = ((polyvertex_t *)lseg->pv2)->y - ((polyvertex_t *)lseg->pv1)->y
 					+ FIXED_TO_FLOAT(FRACUNIT/2);
 				lseg->flength = (float)hypot(x, y);
 				// BP: debug see this kind of segs
diff --git a/src/hardware/hw_clip.c b/src/hardware/hw_clip.c
new file mode 100644
index 00000000..6d120efe
--- /dev/null
+++ b/src/hardware/hw_clip.c
@@ -0,0 +1,465 @@
+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ *
+ * DESCRIPTION:
+ *
+ *---------------------------------------------------------------------
+ */
+
+/*
+ *
+ ** gl_clipper.cpp
+ **
+ ** Handles visibility checks.
+ ** Loosely based on the JDoom clipper.
+ **
+ **---------------------------------------------------------------------------
+ ** Copyright 2003 Tim Stump
+ ** All rights reserved.
+ **
+ ** Redistribution and use in source and binary forms, with or without
+ ** modification, are permitted provided that the following conditions
+ ** are met:
+ **
+ ** 1. Redistributions of source code must retain the above copyright
+ **    notice, this list of conditions and the following disclaimer.
+ ** 2. Redistributions in binary form must reproduce the above copyright
+ **    notice, this list of conditions and the following disclaimer in the
+ **    documentation and/or other materials provided with the distribution.
+ ** 3. The name of the author may not be used to endorse or promote products
+ **    derived from this software without specific prior written permission.
+ **
+ ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ **---------------------------------------------------------------------------
+ **
+ */
+
+#include <math.h>
+#include "../v_video.h"
+#include "hw_clip.h"
+#include "hw_glob.h"
+#include "../r_state.h"
+#include "../tables.h"
+#include "r_opengl/r_opengl.h"
+
+#ifdef HAVE_SPHEREFRUSTRUM
+static GLdouble viewMatrix[16];
+static GLdouble projMatrix[16];
+float frustum[6][4];
+#endif
+
+typedef struct clipnode_s
+	{
+		struct clipnode_s *prev, *next;
+		angle_t start, end;
+	} clipnode_t;
+
+clipnode_t *freelist;
+clipnode_t *clipnodes;
+clipnode_t *cliphead;
+
+static clipnode_t * gld_clipnode_GetNew(void);
+static clipnode_t * gld_clipnode_NewRange(angle_t start, angle_t end);
+static boolean gld_clipper_IsRangeVisible(angle_t startAngle, angle_t endAngle);
+static void gld_clipper_AddClipRange(angle_t start, angle_t end);
+static void gld_clipper_RemoveRange(clipnode_t * range);
+static void gld_clipnode_Free(clipnode_t *node);
+
+static clipnode_t * gld_clipnode_GetNew(void)
+{
+	if (freelist)
+	{
+		clipnode_t * p = freelist;
+		freelist = p->next;
+		return p;
+	}
+	else
+	{
+		return (clipnode_t*)malloc(sizeof(clipnode_t));
+	}
+}
+
+static clipnode_t * gld_clipnode_NewRange(angle_t start, angle_t end)
+{
+	clipnode_t * c = gld_clipnode_GetNew();
+	c->start = start;
+	c->end = end;
+	c->next = c->prev=NULL;
+	return c;
+}
+
+boolean gld_clipper_SafeCheckRange(angle_t startAngle, angle_t endAngle)
+{
+	if(startAngle > endAngle)
+	{
+		return (gld_clipper_IsRangeVisible(startAngle, ANGLE_MAX) || gld_clipper_IsRangeVisible(0, endAngle));
+	}
+
+	return gld_clipper_IsRangeVisible(startAngle, endAngle);
+}
+
+static boolean gld_clipper_IsRangeVisible(angle_t startAngle, angle_t endAngle)
+{
+	clipnode_t *ci;
+	ci = cliphead;
+
+	if (endAngle == 0 && ci && ci->start == 0)
+		return false;
+
+	while (ci != NULL && ci->start < endAngle)
+	{
+		if (startAngle >= ci->start && endAngle <= ci->end)
+		{
+			return false;
+		}
+		ci = ci->next;
+	}
+
+	return true;
+}
+
+static void gld_clipnode_Free(clipnode_t *node)
+{
+	node->next = freelist;
+	freelist = node;
+}
+
+static void gld_clipper_RemoveRange(clipnode_t *range)
+{
+	if (range == cliphead)
+	{
+		cliphead = cliphead->next;
+	}
+	else
+	{
+		if (range->prev)
+		{
+			range->prev->next = range->next;
+		}
+		if (range->next)
+		{
+			range->next->prev = range->prev;
+		}
+	}
+
+	gld_clipnode_Free(range);
+}
+
+void gld_clipper_SafeAddClipRange(angle_t startangle, angle_t endangle)
+{
+	if(startangle > endangle)
+	{
+		// The range has to added in two parts.
+		gld_clipper_AddClipRange(startangle, ANGLE_MAX);
+		gld_clipper_AddClipRange(0, endangle);
+	}
+	else
+	{
+		// Add the range as usual.
+		gld_clipper_AddClipRange(startangle, endangle);
+	}
+}
+
+static void gld_clipper_AddClipRange(angle_t start, angle_t end)
+{
+	clipnode_t *node, *temp, *prevNode, *node2, *delnode;
+
+	if (cliphead)
+	{
+		//check to see if range contains any old ranges
+		node = cliphead;
+		while (node != NULL && node->start < end)
+		{
+			if (node->start >= start && node->end <= end)
+			{
+				temp = node;
+				node = node->next;
+				gld_clipper_RemoveRange(temp);
+			}
+			else
+			{
+				if (node->start <= start && node->end >= end)
+				{
+					return;
+				}
+				else
+				{
+					node = node->next;
+				}
+			}
+		}
+
+		//check to see if range overlaps a range (or possibly 2)
+		node = cliphead;
+		while (node != NULL && node->start <= end)
+		{
+			if (node->end >= start)
+			{
+				// we found the first overlapping node
+				if (node->start > start)
+				{
+					// the new range overlaps with this node's start point
+					node->start = start;
+				}
+				if (node->end < end)
+				{
+					node->end = end;
+				}
+
+				node2 = node->next;
+				while (node2 && node2->start <= node->end)
+				{
+					if (node2->end > node->end)
+					{
+						node->end = node2->end;
+					}
+
+					delnode = node2;
+					node2 = node2->next;
+					gld_clipper_RemoveRange(delnode);
+				}
+				return;
+			}
+			node = node->next;
+		}
+
+		//just add range
+		node = cliphead;
+		prevNode = NULL;
+		temp = gld_clipnode_NewRange(start, end);
+		while (node != NULL && node->start < end)
+		{
+			prevNode = node;
+			node = node->next;
+		}
+		temp->next = node;
+		if (node == NULL)
+		{
+			temp->prev = prevNode;
+			if (prevNode)
+			{
+				prevNode->next = temp;
+			}
+			if (!cliphead)
+			{
+				cliphead = temp;
+			}
+		}
+		else
+		{
+			if (node == cliphead)
+			{
+				cliphead->prev = temp;
+				cliphead = temp;
+			}
+			else
+			{
+				temp->prev = prevNode;
+				prevNode->next = temp;
+				node->prev = temp;
+			}
+		}
+	}
+	else
+	{
+		temp = gld_clipnode_NewRange(start, end);
+		cliphead = temp;
+		return;
+	}
+}
+
+void gld_clipper_Clear(void)
+{
+	clipnode_t *node = cliphead;
+	clipnode_t *temp;
+
+	while (node != NULL)
+	{
+		temp = node;
+		node = node->next;
+		gld_clipnode_Free(temp);
+	}
+
+	cliphead = NULL;
+}
+
+#define RMUL (1.6f/1.333333f)
+
+angle_t gld_FrustumAngle(void)
+{
+	double floatangle;
+	angle_t a1;
+
+	float tilt = (float)fabs(((double)(int)aimingangle) / ANG1);
+
+	// NEWCLIP TODO: SRB2CBTODO: make a global render_fov for this function
+
+	float render_fov = FIXED_TO_FLOAT(cv_grfov.value);
+	float render_fovratio = (float)BASEVIDWIDTH / (float)BASEVIDHEIGHT; // SRB2CBTODO: NEWCLIPTODO: Is this right?
+	float render_multiplier = 64.0f / render_fovratio / RMUL;
+
+	if (tilt > 90.0f)
+	{
+		tilt = 90.0f;
+	}
+
+	// If the pitch is larger than this you can look all around at a FOV of 90
+	if (abs((signed)aimingangle) > 46 * ANG1)
+		return 0xffffffff;
+
+	// ok, this is a gross hack that barely works...
+	// but at least it doesn't overestimate too much...
+	floatangle = 2.0f + (45.0f + (tilt / 1.9f)) * (float)render_fov * 48.0f / render_multiplier / 90.0f;
+	a1 = ANG1 * (int)floatangle;
+	if (a1 >= ANGLE_180)
+		return 0xffffffff;
+	return a1;
+}
+
+// SRB2CB I don't think used any of this stuff, let's disable for now since SRB2 probably doesn't want it either
+// compiler complains about (p)glGetDoublev anyway, in case anyone wants this
+// only r_opengl.c can use the base gl funcs as it turns out, that's a problem for whoever wants sphere frustum checks
+// btw to renable define HAVE_SPHEREFRUSTRUM in hw_clip.h
+#ifdef HAVE_SPHEREFRUSTRUM
+//
+// gld_FrustrumSetup
+//
+
+#define CALCMATRIX(a, b, c, d, e, f, g, h)\
+(float)(viewMatrix[a] * projMatrix[b] + \
+viewMatrix[c] * projMatrix[d] + \
+viewMatrix[e] * projMatrix[f] + \
+viewMatrix[g] * projMatrix[h])
+
+#define NORMALIZE_PLANE(i)\
+t = (float)sqrt(\
+frustum[i][0] * frustum[i][0] + \
+frustum[i][1] * frustum[i][1] + \
+frustum[i][2] * frustum[i][2]); \
+frustum[i][0] /= t; \
+frustum[i][1] /= t; \
+frustum[i][2] /= t; \
+frustum[i][3] /= t
+
+void gld_FrustrumSetup(void)
+{
+	float t;
+	float clip[16];
+
+	pglGetDoublev(GL_PROJECTION_MATRIX, projMatrix);
+	pglGetDoublev(GL_MODELVIEW_MATRIX, viewMatrix);
+
+	clip[0]  = CALCMATRIX(0, 0, 1, 4, 2, 8, 3, 12);
+	clip[1]  = CALCMATRIX(0, 1, 1, 5, 2, 9, 3, 13);
+	clip[2]  = CALCMATRIX(0, 2, 1, 6, 2, 10, 3, 14);
+	clip[3]  = CALCMATRIX(0, 3, 1, 7, 2, 11, 3, 15);
+
+	clip[4]  = CALCMATRIX(4, 0, 5, 4, 6, 8, 7, 12);
+	clip[5]  = CALCMATRIX(4, 1, 5, 5, 6, 9, 7, 13);
+	clip[6]  = CALCMATRIX(4, 2, 5, 6, 6, 10, 7, 14);
+	clip[7]  = CALCMATRIX(4, 3, 5, 7, 6, 11, 7, 15);
+
+	clip[8]  = CALCMATRIX(8, 0, 9, 4, 10, 8, 11, 12);
+	clip[9]  = CALCMATRIX(8, 1, 9, 5, 10, 9, 11, 13);
+	clip[10] = CALCMATRIX(8, 2, 9, 6, 10, 10, 11, 14);
+	clip[11] = CALCMATRIX(8, 3, 9, 7, 10, 11, 11, 15);
+
+	clip[12] = CALCMATRIX(12, 0, 13, 4, 14, 8, 15, 12);
+	clip[13] = CALCMATRIX(12, 1, 13, 5, 14, 9, 15, 13);
+	clip[14] = CALCMATRIX(12, 2, 13, 6, 14, 10, 15, 14);
+	clip[15] = CALCMATRIX(12, 3, 13, 7, 14, 11, 15, 15);
+
+	// Right plane
+	frustum[0][0] = clip[ 3] - clip[ 0];
+	frustum[0][1] = clip[ 7] - clip[ 4];
+	frustum[0][2] = clip[11] - clip[ 8];
+	frustum[0][3] = clip[15] - clip[12];
+	NORMALIZE_PLANE(0);
+
+	// Left plane
+	frustum[1][0] = clip[ 3] + clip[ 0];
+	frustum[1][1] = clip[ 7] + clip[ 4];
+	frustum[1][2] = clip[11] + clip[ 8];
+	frustum[1][3] = clip[15] + clip[12];
+	NORMALIZE_PLANE(1);
+
+	// Bottom plane
+	frustum[2][0] = clip[ 3] + clip[ 1];
+	frustum[2][1] = clip[ 7] + clip[ 5];
+	frustum[2][2] = clip[11] + clip[ 9];
+	frustum[2][3] = clip[15] + clip[13];
+	NORMALIZE_PLANE(2);
+
+	// Top plane
+	frustum[3][0] = clip[ 3] - clip[ 1];
+	frustum[3][1] = clip[ 7] - clip[ 5];
+	frustum[3][2] = clip[11] - clip[ 9];
+	frustum[3][3] = clip[15] - clip[13];
+	NORMALIZE_PLANE(3);
+
+	// Far plane
+	frustum[4][0] = clip[ 3] - clip[ 2];
+	frustum[4][1] = clip[ 7] - clip[ 6];
+	frustum[4][2] = clip[11] - clip[10];
+	frustum[4][3] = clip[15] - clip[14];
+	NORMALIZE_PLANE(4);
+
+	// Near plane
+	frustum[5][0] = clip[ 3] + clip[ 2];
+	frustum[5][1] = clip[ 7] + clip[ 6];
+	frustum[5][2] = clip[11] + clip[10];
+	frustum[5][3] = clip[15] + clip[14];
+	NORMALIZE_PLANE(5);
+}
+
+boolean gld_SphereInFrustum(float x, float y, float z, float radius)
+{
+	int p;
+
+	for (p = 0; p < 4; p++)
+	{
+		if (frustum[p][0] * x +
+			frustum[p][1] * y +
+			frustum[p][2] * z +
+			frustum[p][3] <= -radius)
+		{
+			return false;
+		}
+	}
+	return true;
+}
+#endif
diff --git a/src/hardware/hw_clip.h b/src/hardware/hw_clip.h
new file mode 100644
index 00000000..3ba26e5e
--- /dev/null
+++ b/src/hardware/hw_clip.h
@@ -0,0 +1,24 @@
+/*
+ *  hw_clip.h
+ *  SRB2CB
+ *
+ *  PrBoom's OpenGL clipping
+ *
+ *
+ */
+
+// OpenGL BSP clipping
+#include "../doomdef.h"
+#include "../tables.h"
+#include "../doomtype.h"
+
+//#define HAVE_SPHEREFRUSTRUM // enable if you want gld_SphereInFrustum and related code
+
+boolean gld_clipper_SafeCheckRange(angle_t startAngle, angle_t endAngle);
+void gld_clipper_SafeAddClipRange(angle_t startangle, angle_t endangle);
+void gld_clipper_Clear(void);
+angle_t gld_FrustumAngle(void);
+#ifdef HAVE_SPHEREFRUSTRUM
+void gld_FrustrumSetup(void);
+boolean gld_SphereInFrustum(float x, float y, float z, float radius);
+#endif
diff --git a/src/hardware/hw_data.h b/src/hardware/hw_data.h
index d76fcc1c..4bbc578e 100644
--- a/src/hardware/hw_data.h
+++ b/src/hardware/hw_data.h
@@ -26,10 +26,6 @@
 #include <windows.h>
 #endif
 
-#if defined (VID_X11) && !defined (HAVE_SDL)
-#include <GL/glx.h>
-#endif
-
 #include "../doomdef.h"
 //THIS MUST DISAPPEAR!!!
 #include "hw_glide.h"
diff --git a/src/hardware/hw_draw.c b/src/hardware/hw_draw.c
index 84081dd2..33f5e031 100644
--- a/src/hardware/hw_draw.c
+++ b/src/hardware/hw_draw.c
@@ -112,10 +112,10 @@ void HWR_DrawPatch(GLPatch_t *gpatch, INT32 x, INT32 y, INT32 option)
 	if (option & V_NOSCALESTART)
 		sdupx = sdupy = 2.0f;
 
-	v[0].x = v[3].x = (x*sdupx-gpatch->leftoffset*pdupx)/vid.width - 1;
-	v[2].x = v[1].x = (x*sdupx+(gpatch->width-gpatch->leftoffset)*pdupx)/vid.width - 1;
-	v[0].y = v[1].y = 1-(y*sdupy-gpatch->topoffset*pdupy)/vid.height;
-	v[2].y = v[3].y = 1-(y*sdupy+(gpatch->height-gpatch->topoffset)*pdupy)/vid.height;
+	v[0].x = v[3].x = (x*sdupx-SHORT(gpatch->leftoffset)*pdupx)/vid.width - 1;
+	v[2].x = v[1].x = (x*sdupx+(SHORT(gpatch->width)-SHORT(gpatch->leftoffset))*pdupx)/vid.width - 1;
+	v[0].y = v[1].y = 1-(y*sdupy-SHORT(gpatch->topoffset)*pdupy)/vid.height;
+	v[2].y = v[3].y = 1-(y*sdupy+(SHORT(gpatch->height)-SHORT(gpatch->topoffset))*pdupy)/vid.height;
 
 	v[0].z = v[1].z = v[2].z = v[3].z = 1.0f;
 
@@ -179,18 +179,29 @@ void HWR_DrawFixedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
 	dupx = dupy = (dupx < dupy ? dupx : dupy);
 	fscale = FIXED_TO_FLOAT(pscale);
 
-	if (option & V_OFFSET)
+	// See my comments in v_video.c's V_DrawFixedPatch
+	// -- Monster Iestyn 29/10/18
 	{
-		cx -= (float)gpatch->leftoffset * dupx * fscale;
-		cy -= (float)gpatch->topoffset * dupy * fscale;
-	}
-	else
-	{
-		cy -= (float)gpatch->topoffset * fscale;
+		float offsetx = 0.0f, offsety = 0.0f;
+
+		// left offset
 		if (option & V_FLIP)
-			cx -= ((float)gpatch->width - (float)gpatch->leftoffset) * fscale;
+			offsetx = (float)(SHORT(gpatch->width) - SHORT(gpatch->leftoffset)) * fscale;
 		else
-			cx -= (float)gpatch->leftoffset * fscale;
+			offsetx = (float)SHORT(gpatch->leftoffset) * fscale;
+
+		// top offset
+		// TODO: make some kind of vertical version of V_FLIP, maybe by deprecating V_OFFSET in future?!?
+		offsety = (float)SHORT(gpatch->topoffset) * fscale;
+
+		if ((option & (V_NOSCALESTART|V_OFFSET)) == (V_NOSCALESTART|V_OFFSET)) // Multiply by dupx/dupy for crosshairs
+		{
+			offsetx *= dupx;
+			offsety *= dupy;
+		}
+
+		cx -= offsetx;
+		cy -= offsety;
 	}
 
 	if (option & V_SPLITSCREEN)
@@ -237,13 +248,13 @@ void HWR_DrawFixedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
 
 	if (pscale != FRACUNIT)
 	{
-		fwidth = (float)gpatch->width * fscale * dupx;
-		fheight = (float)gpatch->height * fscale * dupy;
+		fwidth = (float)SHORT(gpatch->width) * fscale * dupx;
+		fheight = (float)SHORT(gpatch->height) * fscale * dupy;
 	}
 	else
 	{
-		fwidth = (float)gpatch->width * dupx;
-		fheight = (float)gpatch->height * dupy;
+		fwidth = (float)SHORT(gpatch->width) * dupx;
+		fheight = (float)SHORT(gpatch->height) * dupy;
 	}
 
 	// positions of the cx, cy, are between 0 and vid.width/vid.height now, we need them to be between -1 and 1
@@ -341,8 +352,8 @@ void HWR_DrawCroppedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscal
 	dupx = dupy = (dupx < dupy ? dupx : dupy);
 	fscale = FIXED_TO_FLOAT(pscale);
 
-	cy -= (float)gpatch->topoffset * fscale;
-	cx -= (float)gpatch->leftoffset * fscale;
+	cy -= (float)SHORT(gpatch->topoffset) * fscale;
+	cx -= (float)SHORT(gpatch->leftoffset) * fscale;
 
 	if (!(option & V_NOSCALESTART))
 	{
@@ -392,11 +403,11 @@ void HWR_DrawCroppedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscal
 	if (fheight > h - sy)
 		fheight = h - sy;
 
-	if (fwidth > gpatch->width)
-		fwidth = gpatch->width;
+	if (fwidth > SHORT(gpatch->width))
+		fwidth = SHORT(gpatch->width);
 
-	if (fheight > gpatch->height)
-		fheight = gpatch->height;
+	if (fheight > SHORT(gpatch->height))
+		fheight = SHORT(gpatch->height);
 
 	if (pscale != FRACUNIT)
 	{
@@ -426,10 +437,10 @@ void HWR_DrawCroppedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscal
 
 	v[0].z = v[1].z = v[2].z = v[3].z = 1.0f;
 
-	v[0].sow = v[3].sow = ((sx)/(float)gpatch->width )*gpatch->max_s;
-	v[2].sow = v[1].sow = ((w )/(float)gpatch->width )*gpatch->max_s;
-	v[0].tow = v[1].tow = ((sy)/(float)gpatch->height)*gpatch->max_t;
-	v[2].tow = v[3].tow = ((h )/(float)gpatch->height)*gpatch->max_t;
+	v[0].sow = v[3].sow = ((sx)/(float)SHORT(gpatch->width) )*gpatch->max_s;
+	v[2].sow = v[1].sow = ((w )/(float)SHORT(gpatch->width) )*gpatch->max_s;
+	v[0].tow = v[1].tow = ((sy)/(float)SHORT(gpatch->height))*gpatch->max_t;
+	v[2].tow = v[3].tow = ((h )/(float)SHORT(gpatch->height))*gpatch->max_t;
 
 	flags = BLENDMODE|PF_Clip|PF_NoZClip|PF_NoDepthTest;
 
diff --git a/src/hardware/hw_drv.h b/src/hardware/hw_drv.h
index a5ac8200..e2fa90eb 100644
--- a/src/hardware/hw_drv.h
+++ b/src/hardware/hw_drv.h
@@ -32,10 +32,6 @@
 //                                                       STANDARD DLL EXPORTS
 // ==========================================================================
 
-#ifdef HAVE_SDL
-#undef VID_X11
-#endif
-
 EXPORT boolean HWRAPI(Init) (I_Error_t ErrorFunction);
 #ifndef HAVE_SDL
 EXPORT void HWRAPI(Shutdown) (void);
@@ -43,9 +39,6 @@ EXPORT void HWRAPI(Shutdown) (void);
 #ifdef _WINDOWS
 EXPORT void HWRAPI(GetModeList) (vmode_t **pvidmodes, INT32 *numvidmodes);
 #endif
-#ifdef VID_X11
-EXPORT Window HWRAPI(HookXwin) (Display *, INT32, INT32, boolean);
-#endif
 #if defined (PURESDL) || defined (macintosh)
 EXPORT void HWRAPI(SetPalette) (INT32 *, RGBA_t *gamma);
 #else
@@ -71,10 +64,6 @@ EXPORT void HWRAPI(SetTransform) (FTransform *ptransform);
 EXPORT INT32 HWRAPI(GetTextureUsed) (void);
 EXPORT INT32 HWRAPI(GetRenderVersion) (void);
 
-#ifdef VID_X11 // ifdef to be removed as soon as windoze supports that as well
-// metzgermeister: added for Voodoo detection
-EXPORT char *HWRAPI(GetRenderer) (void);
-#endif
 #ifdef SHUFFLE
 #define SCREENVERTS 10
 EXPORT void HWRAPI(PostImgRedraw) (float points[SCREENVERTS][SCREENVERTS][2]);
@@ -115,10 +104,6 @@ struct hwdriver_s
 #ifdef _WINDOWS
 	GetModeList         pfnGetModeList;
 #endif
-#ifdef VID_X11
-	HookXwin            pfnHookXwin;
-	GetRenderer         pfnGetRenderer;
-#endif
 #ifndef HAVE_SDL
 	Shutdown            pfnShutdown;
 #endif
diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index ecb70a0f..64df1a2e 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -44,6 +44,10 @@
 #endif
 #include "hw_md2.h"
 
+#ifdef NEWCLIP
+#include "hw_clip.h"
+#endif
+
 #define R_FAKEFLOORS
 #define HWPRECIP
 #define SORTING
@@ -99,8 +103,9 @@ CV_PossibleValue_t granisotropicmode_cons_t[] = {{1, "MIN"}, {16, "MAX"}, {0, NU
 boolean drawsky = true;
 
 // needs fix: walls are incorrectly clipped one column less
+#ifndef NEWCLIP
 static consvar_t cv_grclipwalls = {"gr_clipwalls", "Off", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
-
+#endif
 //development variables for diverse uses
 static consvar_t cv_gralpha = {"gr_alpha", "160", 0, CV_Unsigned, NULL, 0, NULL, NULL, 0, 0, NULL};
 static consvar_t cv_grbeta = {"gr_beta", "0", 0, CV_Unsigned, NULL, 0, NULL, NULL, 0, 0, NULL};
@@ -323,9 +328,6 @@ static angle_t gr_xtoviewangle[MAXVIDWIDTH+1];
 // test change fov when looking up/down but bsp projection messup :(
 //#define NOCRAPPYMLOOK
 
-/// \note crappy
-#define drawtextured true
-
 // base values set at SetViewSize
 static float gr_basecentery;
 
@@ -856,11 +858,11 @@ static void HWR_DrawSegsSplats(FSurfaceInfo * pSurf)
 
 	M_ClearBox(segbbox);
 	M_AddToBox(segbbox,
-		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->x),
-		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->y));
+		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->x),
+		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->y));
 	M_AddToBox(segbbox,
-		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->x),
-		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->y));
+		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->x),
+		FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->y));
 
 	splat = (wallsplat_t *)gr_curline->linedef->splats;
 	for (; splat; splat = splat->next)
@@ -1033,6 +1035,7 @@ static void HWR_ProjectWall(wallVert3D   * wallVerts,
 // (in fact a clipping plane that has a constant, so can clip with simple 2d)
 // with the wall segment
 //
+#ifndef NEWCLIP
 static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
 {
 	float num, den;
@@ -1061,11 +1064,12 @@ static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
 
 	return num / den;
 }
+#endif
 
 //
 // HWR_SplitWall
 //
-static void HWR_SplitWall(sector_t *sector, wallVert3D *wallVerts, INT32 texnum, FSurfaceInfo* Surf, UINT32 cutflag, ffloor_t *pfloor)
+static void HWR_SplitWall(sector_t *sector, wallVert3D *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor)
 {
 	/* SoM: split up and light walls according to the
 	 lightlist. This may also include leaving out parts
@@ -1336,7 +1340,11 @@ static void HWR_DrawSkyWall(wallVert3D *wallVerts, FSurfaceInfo *Surf, fixed_t b
 // Anything between means the wall segment has been clipped with solidsegs,
 //  reducing wall overdraw to a minimum
 //
+#ifdef NEWCLIP
+static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
+#else
 static void HWR_StoreWallRange(double startfrac, double endfrac)
+#endif
 {
 	wallVert3D wallVerts[4];
 	v2d_t vs, ve; // start, end vertices of 2d line (view from above)
@@ -1361,16 +1369,18 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 	extracolormap_t *colormap;
 	FSurfaceInfo Surf;
 
+#ifndef NEWCLIP
 	if (startfrac > endfrac)
 		return;
+#endif
 
 	gr_sidedef = gr_curline->sidedef;
 	gr_linedef = gr_curline->linedef;
 
-	vs.x = ((polyvertex_t *)gr_curline->v1)->x;
-	vs.y = ((polyvertex_t *)gr_curline->v1)->y;
-	ve.x = ((polyvertex_t *)gr_curline->v2)->x;
-	ve.y = ((polyvertex_t *)gr_curline->v2)->y;
+	vs.x = ((polyvertex_t *)gr_curline->pv1)->x;
+	vs.y = ((polyvertex_t *)gr_curline->pv1)->y;
+	ve.x = ((polyvertex_t *)gr_curline->pv2)->x;
+	ve.y = ((polyvertex_t *)gr_curline->pv2)->y;
 
 #ifdef ESLOPE
 	v1x = FLOAT_TO_FIXED(vs.x);
@@ -1378,44 +1388,21 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 	v2x = FLOAT_TO_FIXED(ve.x);
 	v2y = FLOAT_TO_FIXED(ve.y);
 #endif
-
-	if (gr_frontsector->heightsec != -1)
-	{
 #ifdef ESLOPE
-		worldtop = worldtopslope = sectors[gr_frontsector->heightsec].ceilingheight;
-		worldbottom = worldbottomslope = sectors[gr_frontsector->heightsec].floorheight;
-#else
-		worldtop = sectors[gr_frontsector->heightsec].ceilingheight;
-		worldbottom = sectors[gr_frontsector->heightsec].floorheight;
-#endif
-	}
-	else
-	{
-#ifdef ESLOPE
-		if (gr_frontsector->c_slope)
-		{
-			worldtop      = P_GetZAt(gr_frontsector->c_slope, v1x, v1y);
-			worldtopslope = P_GetZAt(gr_frontsector->c_slope, v2x, v2y);
-		}
-		else
-		{
-			worldtop = worldtopslope = gr_frontsector->ceilingheight;
-		}
 
-		if (gr_frontsector->f_slope)
-		{
-			worldbottom      = P_GetZAt(gr_frontsector->f_slope, v1x, v1y);
-			worldbottomslope = P_GetZAt(gr_frontsector->f_slope, v2x, v2y);
-		}
-		else
-		{
-			worldbottom = worldbottomslope = gr_frontsector->floorheight;
-		}
+#define SLOPEPARAMS(slope, end1, end2, normalheight) \
+	if (slope) { \
+		end1 = P_GetZAt(slope, v1x, v1y); \
+		end2 = P_GetZAt(slope, v2x, v2y); \
+	} else \
+		end1 = end2 = normalheight;
+
+	SLOPEPARAMS(gr_frontsector->c_slope, worldtop,    worldtopslope,    gr_frontsector->ceilingheight)
+	SLOPEPARAMS(gr_frontsector->f_slope, worldbottom, worldbottomslope, gr_frontsector->floorheight)
 #else
-		worldtop    = gr_frontsector->ceilingheight;
-		worldbottom = gr_frontsector->floorheight;
+	worldtop    = gr_frontsector->ceilingheight;
+	worldbottom = gr_frontsector->floorheight;
 #endif
-	}
 
 	// remember vertices ordering
 	//  3--2
@@ -1430,20 +1417,23 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 	wallVerts[2].z = wallVerts[1].z = ve.y;
 	wallVerts[0].w = wallVerts[1].w = wallVerts[2].w = wallVerts[3].w = 1.0f;
 
-	if (drawtextured)
 	{
 		// x offset the texture
 		fixed_t texturehpeg = gr_sidedef->textureoffset + gr_curline->offset;
 
+#ifndef NEWCLIP
 		// clip texture s start/end coords with solidsegs
 		if (startfrac > 0.0f && startfrac < 1.0f)
 			cliplow = (float)(texturehpeg + (gr_curline->flength*FRACUNIT) * startfrac);
 		else
+#endif
 			cliplow = (float)texturehpeg;
 
+#ifndef NEWCLIP
 		if (endfrac > 0.0f && endfrac < 1.0f)
 			cliphigh = (float)(texturehpeg + (gr_curline->flength*FRACUNIT) * endfrac);
 		else
+#endif
 			cliphigh = (float)(texturehpeg + (gr_curline->flength*FRACUNIT));
 	}
 
@@ -1459,43 +1449,15 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 	{
 		INT32 gr_toptexture, gr_bottomtexture;
 		// two sided line
-		if (gr_backsector->heightsec != -1)
-		{
-#ifdef ESLOPE
-			worldhigh = worldhighslope = sectors[gr_backsector->heightsec].ceilingheight;
-			worldlow = worldlowslope = sectors[gr_backsector->heightsec].floorheight;
-#else
-			worldhigh = sectors[gr_backsector->heightsec].ceilingheight;
-			worldlow = sectors[gr_backsector->heightsec].floorheight;
-#endif
-		}
-		else
-		{
-#ifdef ESLOPE
-			if (gr_backsector->c_slope)
-			{
-				worldhigh      = P_GetZAt(gr_backsector->c_slope, v1x, v1y);
-				worldhighslope = P_GetZAt(gr_backsector->c_slope, v2x, v2y);
-			}
-			else
-			{
-				worldhigh = worldhighslope = gr_backsector->ceilingheight;
-			}
 
-			if (gr_backsector->f_slope)
-			{
-				worldlow      = P_GetZAt(gr_backsector->f_slope, v1x, v1y);
-				worldlowslope = P_GetZAt(gr_backsector->f_slope, v2x, v2y);
-			}
-			else
-			{
-				worldlow = worldlowslope = gr_backsector->floorheight;
-			}
+#ifdef ESLOPE
+		SLOPEPARAMS(gr_backsector->c_slope, worldhigh, worldhighslope, gr_backsector->ceilingheight)
+		SLOPEPARAMS(gr_backsector->f_slope, worldlow,  worldlowslope,  gr_backsector->floorheight)
+#undef SLOPEPARAMS
 #else
-			worldhigh = gr_backsector->ceilingheight;
-			worldlow  = gr_backsector->floorheight;
+		worldhigh = gr_backsector->ceilingheight;
+		worldlow  = gr_backsector->floorheight;
 #endif
-		}
 
 		// hack to allow height changes in outdoor areas
 		// This is what gets rid of the upper textures if there should be sky
@@ -1519,7 +1481,6 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
             worldhigh < worldtop
             ) && gr_toptexture)
 		{
-			if (drawtextured)
 			{
 				fixed_t texturevpegtop; // top
 
@@ -1600,7 +1561,6 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 #endif
             worldlow > worldbottom) && gr_bottomtexture) //only if VISIBLE!!!
 		{
-			if (drawtextured)
 			{
 				fixed_t texturevpegbottom = 0; // bottom
 
@@ -1792,7 +1752,6 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 			h = min(highcut, polytop);
 			l = max(polybottom, lowcut);
 
-			if (drawtextured)
 			{
 				// PEGGING
 #ifdef ESLOPE
@@ -1848,7 +1807,6 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 				h = min(highcut, polytop);
 				l = max(polybottom, lowcut);
 
-				if (drawtextured)
 				{
 					// PEGGING
 					if (!!(gr_linedef->flags & ML_DONTPEGBOTTOM) ^ !!(gr_linedef->flags & ML_EFFECT3))
@@ -2039,7 +1997,6 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 		gr_midtexture = R_GetTextureNum(gr_sidedef->midtexture);
 		if (gr_midtexture)
 		{
-			if (drawtextured)
 			{
 				fixed_t     texturevpeg;
 				// PEGGING
@@ -2180,7 +2137,7 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 					wallVerts[0].s = wallVerts[3].s = 0;
 					wallVerts[2].s = wallVerts[1].s = 0;
 				}
-				else if (drawtextured)
+				else
 				{
 					fixed_t texturevpeg;
 
@@ -2316,7 +2273,7 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 					wallVerts[0].s = wallVerts[3].s = 0;
 					wallVerts[2].s = wallVerts[1].s = 0;
 				}
-				else if (drawtextured)
+				else
 				{
 					grTex = HWR_GetTexture(texnum);
 
@@ -2385,6 +2342,110 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
 //Hurdler: end of 3d-floors test
 }
 
+// From PrBoom:
+//
+// e6y: Check whether the player can look beyond this line
+//
+#ifdef NEWCLIP
+boolean checkforemptylines = true;
+// Don't modify anything here, just check
+// Kalaron: Modified for sloped linedefs
+static boolean CheckClip(seg_t * seg, sector_t * afrontsector, sector_t * abacksector)
+{
+	fixed_t frontf1,frontf2, frontc1, frontc2; // front floor/ceiling ends
+	fixed_t backf1, backf2, backc1, backc2; // back floor ceiling ends
+
+	// GZDoom method of sloped line clipping
+
+#ifdef ESLOPE
+	if (afrontsector->f_slope || afrontsector->c_slope || abacksector->f_slope || abacksector->c_slope)
+	{
+		fixed_t v1x, v1y, v2x, v2y; // the seg's vertexes as fixed_t
+		v1x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->x);
+		v1y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->y);
+		v2x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->x);
+		v2y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->y);
+#define SLOPEPARAMS(slope, end1, end2, normalheight) \
+		if (slope) { \
+			end1 = P_GetZAt(slope, v1x, v1y); \
+			end2 = P_GetZAt(slope, v2x, v2y); \
+		} else \
+			end1 = end2 = normalheight;
+
+		SLOPEPARAMS(afrontsector->f_slope, frontf1, frontf2, afrontsector->floorheight)
+		SLOPEPARAMS(afrontsector->c_slope, frontc1, frontc2, afrontsector->ceilingheight)
+		SLOPEPARAMS( abacksector->f_slope, backf1,  backf2,  abacksector->floorheight)
+		SLOPEPARAMS( abacksector->c_slope, backc1,  backc2,  abacksector->ceilingheight)
+#undef SLOPEPARAMS
+	}
+	else
+#endif
+	{
+		frontf1 = frontf2 = afrontsector->floorheight;
+		frontc1 = frontc2 = afrontsector->ceilingheight;
+		backf1 = backf2 = abacksector->floorheight;
+		backc1 = backc2 = abacksector->ceilingheight;
+	}
+
+	// now check for closed sectors!
+	if (backc1 <= frontf1 && backc2 <= frontf2)
+	{
+		checkforemptylines = false;
+		if (!seg->sidedef->toptexture)
+			return false;
+
+		if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
+			return false;
+
+		return true;
+	}
+
+	if (backf1 >= frontc1 && backf2 >= frontc2)
+	{
+		checkforemptylines = false;
+		if (!seg->sidedef->bottomtexture)
+			return false;
+
+		// properly render skies (consider door "open" if both floors are sky):
+		if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
+			return false;
+
+		return true;
+	}
+
+	if (backc1 <= backf1 && backc2 <= backf2)
+	{
+		checkforemptylines = false;
+		// preserve a kind of transparent door/lift special effect:
+		if (backc1 < frontc1 || backc2 < frontc2)
+		{
+			if (!seg->sidedef->toptexture)
+				return false;
+		}
+		if (backf1 > frontf1 || backf2 > frontf2)
+		{
+			if (!seg->sidedef->bottomtexture)
+				return false;
+		}
+		if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
+			return false;
+
+		if (abacksector->floorpic == skyflatnum && afrontsector->floorpic == skyflatnum)
+			return false;
+
+		return true;
+	}
+
+	if (backc1 != frontc1 || backc2 != frontc2
+		|| backf1 != frontf1 || backf2 != frontf2)
+		{
+			checkforemptylines = false;
+			return false;
+		}
+
+	return false;
+}
+#else
 //Hurdler: just like in r_bsp.c
 #if 1
 #define MAXSEGS         MAXVIDWIDTH/2+1
@@ -2456,7 +2517,7 @@ static void HWR_ClipSolidWallSegment(INT32 first, INT32 last)
 		}
 		else
 		{
-			highfrac = HWR_ClipViewSegment(start->first+1, (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
+			highfrac = HWR_ClipViewSegment(start->first+1, (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(0, highfrac);
 		}
 		// Now adjust the clip size.
@@ -2480,8 +2541,8 @@ static void HWR_ClipSolidWallSegment(INT32 first, INT32 last)
 		}
 		else
 		{
-			lowfrac  = HWR_ClipViewSegment(next->last-1, (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
-			highfrac = HWR_ClipViewSegment((next+1)->first+1, (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
+			lowfrac  = HWR_ClipViewSegment(next->last-1, (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
+			highfrac = HWR_ClipViewSegment((next+1)->first+1, (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(lowfrac, highfrac);
 		}
 		next++;
@@ -2515,7 +2576,7 @@ static void HWR_ClipSolidWallSegment(INT32 first, INT32 last)
 		}
 		else
 		{
-			lowfrac  = HWR_ClipViewSegment(next->last-1, (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
+			lowfrac  = HWR_ClipViewSegment(next->last-1, (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(lowfrac, 1);
 		}
 	}
@@ -2578,8 +2639,8 @@ static void HWR_ClipPassWallSegment(INT32 first, INT32 last)
 		else
 		{
 			highfrac = HWR_ClipViewSegment(min(start->first + 1,
-				start->last), (polyvertex_t *)gr_curline->v1,
-				(polyvertex_t *)gr_curline->v2);
+				start->last), (polyvertex_t *)gr_curline->pv1,
+				(polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(0, highfrac);
 		}
 	}
@@ -2598,8 +2659,8 @@ static void HWR_ClipPassWallSegment(INT32 first, INT32 last)
 		}
 		else
 		{
-			lowfrac  = HWR_ClipViewSegment(max(start->last-1,start->first), (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
-			highfrac = HWR_ClipViewSegment(min((start+1)->first+1,(start+1)->last), (polyvertex_t *)gr_curline->v1, (polyvertex_t *)gr_curline->v2);
+			lowfrac  = HWR_ClipViewSegment(max(start->last-1,start->first), (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
+			highfrac = HWR_ClipViewSegment(min((start+1)->first+1,(start+1)->last), (polyvertex_t *)gr_curline->pv1, (polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(lowfrac, highfrac);
 		}
 		start++;
@@ -2629,8 +2690,8 @@ static void HWR_ClipPassWallSegment(INT32 first, INT32 last)
 		else
 		{
 			lowfrac = HWR_ClipViewSegment(max(start->last - 1,
-				start->first), (polyvertex_t *)gr_curline->v1,
-				(polyvertex_t *)gr_curline->v2);
+				start->first), (polyvertex_t *)gr_curline->pv1,
+				(polyvertex_t *)gr_curline->pv2);
 			HWR_StoreWallRange(lowfrac, 1);
 		}
 	}
@@ -2670,6 +2731,7 @@ static void HWR_ClearClipSegs(void)
 	gr_solidsegs[1].last = 0x7fffffff;
 	hw_newend = gr_solidsegs+2;
 }
+#endif // NEWCLIP
 
 // -----------------+
 // HWR_AddLine      : Clips the given segment and adds any visible pieces to the line list.
@@ -2678,24 +2740,46 @@ static void HWR_ClearClipSegs(void)
 // -----------------+
 static void HWR_AddLine(seg_t * line)
 {
-	INT32 x1, x2;
 	angle_t angle1, angle2;
+#ifndef NEWCLIP
+	INT32 x1, x2;
 	angle_t span, tspan;
+#endif
 
 	// SoM: Backsector needs to be run through R_FakeFlat
 	static sector_t tempsec;
 
+	fixed_t v1x, v1y, v2x, v2y; // the seg's vertexes as fixed_t
+#ifdef POLYOBJECTS
 	if (line->polyseg && !(line->polyseg->flags & POF_RENDERSIDES))
 		return;
+#endif
 
 	gr_curline = line;
 
-	// OPTIMIZE: quickly reject orthogonal back sides.
-	angle1 = R_PointToAngle(FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->x),
-	                        FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->y));
-	angle2 = R_PointToAngle(FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->x),
-	                        FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->y));
+	v1x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->x);
+	v1y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->y);
+	v2x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->x);
+	v2y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->y);
 
+	// OPTIMIZE: quickly reject orthogonal back sides.
+	angle1 = R_PointToAngle(v1x, v1y);
+	angle2 = R_PointToAngle(v2x, v2y);
+
+#ifdef NEWCLIP
+	 // PrBoom: Back side, i.e. backface culling - read: endAngle >= startAngle!
+	if (angle2 - angle1 < ANGLE_180)
+		return;
+
+	// PrBoom: use REAL clipping math YAYYYYYYY!!!
+
+	if (!gld_clipper_SafeCheckRange(angle2, angle1))
+    {
+		return;
+    }
+
+	checkforemptylines = true;
+#else
 	// Clip to view edges.
 	span = angle1 - angle2;
 
@@ -2736,8 +2820,8 @@ static void HWR_AddLine(seg_t * line)
 		float fx1,fx2,fy1,fy2;
 		//BP: test with a better projection than viewangletox[R_PointToAngle(angle)]
 		// do not enable this at release 4 mul and 2 div
-		fx1 = ((polyvertex_t *)(line->v1))->x-gr_viewx;
-		fy1 = ((polyvertex_t *)(line->v1))->y-gr_viewy;
+		fx1 = ((polyvertex_t *)(line->pv1))->x-gr_viewx;
+		fy1 = ((polyvertex_t *)(line->pv1))->y-gr_viewy;
 		fy2 = (fx1 * gr_viewcos + fy1 * gr_viewsin);
 		if (fy2 < 0)
 			// the point is back
@@ -2745,8 +2829,8 @@ static void HWR_AddLine(seg_t * line)
 		else
 			fx1 = gr_windowcenterx + (fx1 * gr_viewsin - fy1 * gr_viewcos) * gr_centerx / fy2;
 
-		fx2 = ((polyvertex_t *)(line->v2))->x-gr_viewx;
-		fy2 = ((polyvertex_t *)(line->v2))->y-gr_viewy;
+		fx2 = ((polyvertex_t *)(line->pv2))->x-gr_viewx;
+		fy2 = ((polyvertex_t *)(line->pv2))->y-gr_viewy;
 		fy1 = (fx2 * gr_viewcos + fy2 * gr_viewsin);
 		if (fy1 < 0)
 			// the point is back
@@ -2774,8 +2858,34 @@ static void HWR_AddLine(seg_t * line)
 		return;
 	}
 */
+#endif
+
 	gr_backsector = line->backsector;
 
+#ifdef NEWCLIP
+	if (!line->backsector)
+    {
+		gld_clipper_SafeAddClipRange(angle2, angle1);
+    }
+    else
+    {
+		gr_backsector = R_FakeFlat(gr_backsector, &tempsec, NULL, NULL, true);
+		if (CheckClip(line, gr_frontsector, gr_backsector))
+		{
+			gld_clipper_SafeAddClipRange(angle2, angle1);
+			checkforemptylines = false;
+		}
+		// Reject empty lines used for triggers and special events.
+		// Identical floor and ceiling on both sides,
+		//  identical light levels on both sides,
+		//  and no middle texture.
+		if (checkforemptylines && R_IsEmptyLine(line, gr_frontsector, gr_backsector))
+			return;
+    }
+
+	HWR_ProcessSeg(); // Doesn't need arguments because they're defined globally :D
+	return;
+#else
 	// Single sided line?
 	if (!gr_backsector)
 		goto clipsolid;
@@ -2785,14 +2895,9 @@ static void HWR_AddLine(seg_t * line)
 #ifdef ESLOPE
 	if (gr_frontsector->f_slope || gr_frontsector->c_slope || gr_backsector->f_slope || gr_backsector->c_slope)
 	{
-		fixed_t v1x, v1y, v2x, v2y; // the seg's vertexes as fixed_t
 		fixed_t frontf1,frontf2, frontc1, frontc2; // front floor/ceiling ends
 		fixed_t backf1, backf2, backc1, backc2; // back floor ceiling ends
 
-		v1x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->x);
-		v1y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v1)->y);
-		v2x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->x);
-		v2y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->v2)->y);
 #define SLOPEPARAMS(slope, end1, end2, normalheight) \
 		if (slope) { \
 			end1 = P_GetZAt(slope, v1x, v1y); \
@@ -2813,6 +2918,13 @@ static void HWR_AddLine(seg_t * line)
 			goto clipsolid;
 		}
 
+		// Check for automap fix.
+		if (backc1 <= backf1 && backc2 <= backf2
+		&& ((backc1 >= frontc1 && backc2 >= frontc2) || gr_curline->sidedef->toptexture)
+		&& ((backf1 <= frontf1 && backf2 >= frontf2) || gr_curline->sidedef->bottomtexture)
+		&& (gr_backsector->ceilingpic != skyflatnum || gr_frontsector->ceilingpic != skyflatnum))
+			goto clipsolid;
+
 		// Window.
 		if (backc1 != frontc1 || backc2 != frontc2
 			|| backf1 != frontf1 || backf2 != frontf2)
@@ -2828,6 +2940,13 @@ static void HWR_AddLine(seg_t * line)
 			gr_backsector->floorheight >= gr_frontsector->ceilingheight)
 			goto clipsolid;
 
+		// Check for automap fix.
+		if (gr_backsector->ceilingheight <= gr_backsector->floorheight
+		&& ((gr_backsector->ceilingheight >= gr_frontsector->ceilingheight) || gr_curline->sidedef->toptexture)
+		&& ((gr_backsector->floorheight <= gr_backsector->floorheight) || gr_curline->sidedef->bottomtexture)
+		&& (gr_backsector->ceilingpic != skyflatnum || gr_frontsector->ceilingpic != skyflatnum))
+			goto clipsolid;
+
 		// Window.
 		if (gr_backsector->ceilingheight != gr_frontsector->ceilingheight ||
 			gr_backsector->floorheight != gr_frontsector->floorheight)
@@ -2838,25 +2957,8 @@ static void HWR_AddLine(seg_t * line)
 	// Identical floor and ceiling on both sides,
 	//  identical light levels on both sides,
 	//  and no middle texture.
-	if (
-#ifdef POLYOBJECTS
-		!line->polyseg &&
-#endif
-		gr_backsector->ceilingpic == gr_frontsector->ceilingpic
-		&& gr_backsector->floorpic == gr_frontsector->floorpic
-#ifdef ESLOPE
-		&& gr_backsector->f_slope == gr_frontsector->f_slope
-		&& gr_backsector->c_slope == gr_frontsector->c_slope
-#endif
-	    && gr_backsector->lightlevel == gr_frontsector->lightlevel
-		&& gr_curline->sidedef->midtexture == 0
-		&& !gr_backsector->ffloors && !gr_frontsector->ffloors)
-		// SoM: For 3D sides... Boris, would you like to take a
-		// crack at rendering 3D sides? You would need to add the
-		// above check and add code to HWR_StoreWallRange...
-	{
+	if (R_IsEmptyLine(gr_curline, gr_frontsector, gr_backsector))
 		return;
-	}
 
 clippass:
 	if (x1 == x2)
@@ -2868,6 +2970,7 @@ clipsolid:
 	if (x1 == x2)
 		goto clippass;
 	HWR_ClipSolidWallSegment(x1, x2-1);
+#endif
 }
 
 // HWR_CheckBBox
@@ -2879,9 +2982,13 @@ clipsolid:
 
 static boolean HWR_CheckBBox(fixed_t *bspcoord)
 {
-	INT32 boxpos, sx1, sx2;
+	INT32 boxpos;
 	fixed_t px1, py1, px2, py2;
-	angle_t angle1, angle2, span, tspan;
+	angle_t angle1, angle2;
+#ifndef NEWCLIP
+	INT32 sx1, sx2;
+	angle_t span, tspan;
+#endif
 
 	// Find the corners of the box
 	// that define the edges from current viewpoint.
@@ -2907,6 +3014,11 @@ static boolean HWR_CheckBBox(fixed_t *bspcoord)
 	px2 = bspcoord[checkcoord[boxpos][2]];
 	py2 = bspcoord[checkcoord[boxpos][3]];
 
+#ifdef NEWCLIP
+	angle1 = R_PointToAngle(px1, py1);
+	angle2 = R_PointToAngle(px2, py2);
+	return gld_clipper_SafeCheckRange(angle2, angle1);
+#else
 	// check clip list for an open space
 	angle1 = R_PointToAngle2(dup_viewx>>1, dup_viewy>>1, px1>>1, py1>>1) - dup_viewangle;
 	angle2 = R_PointToAngle2(dup_viewx>>1, dup_viewy>>1, px2>>1, py2>>1) - dup_viewangle;
@@ -2954,6 +3066,7 @@ static boolean HWR_CheckBBox(fixed_t *bspcoord)
 		return false;
 
 	return HWR_ClipToSolidSegs(sx1, sx2 - 1);
+#endif
 }
 
 #ifdef POLYOBJECTS
@@ -2987,8 +3100,8 @@ static inline void HWR_AddPolyObjectSegs(void)
 			pv2->x = FIXED_TO_FLOAT(gr_fakeline->v2->x);
 			pv2->y = FIXED_TO_FLOAT(gr_fakeline->v2->y);
 
-			gr_fakeline->v1 = (vertex_t *)pv1;
-			gr_fakeline->v2 = (vertex_t *)pv2;
+			gr_fakeline->pv1 = pv1;
+			gr_fakeline->pv2 = pv2;
 
 			HWR_AddLine(gr_fakeline);
 		}
@@ -5727,7 +5840,19 @@ if (0)
 #ifdef SORTING
 	drawcount = 0;
 #endif
+#ifdef NEWCLIP
+	if (rendermode == render_opengl)
+	{
+		angle_t a1 = gld_FrustumAngle();
+		gld_clipper_Clear();
+		gld_clipper_SafeAddClipRange(viewangle + a1, viewangle - a1);
+#ifdef HAVE_SPHEREFRUSTRUM
+		gld_FrustrumSetup();
+#endif
+	}
+#else
 	HWR_ClearClipSegs();
+#endif
 
 	//04/01/2000: Hurdler: added for T&L
 	//                     Actually it only works on Walls and Planes
@@ -5737,6 +5862,7 @@ if (0)
 
 	HWR_RenderBSPNode((INT32)numnodes-1);
 
+#ifndef NEWCLIP
 	// Make a viewangle int so we can render things based on mouselook
 	if (player == &players[consoleplayer])
 		viewangle = localaiming;
@@ -5763,6 +5889,7 @@ if (0)
 
 		dup_viewangle += ANGLE_90;
 	}
+#endif
 
 	// Check for new console commands.
 	NetUpdate();
@@ -5934,7 +6061,19 @@ if (0)
 #ifdef SORTING
 	drawcount = 0;
 #endif
+#ifdef NEWCLIP
+	if (rendermode == render_opengl)
+	{
+		angle_t a1 = gld_FrustumAngle();
+		gld_clipper_Clear();
+		gld_clipper_SafeAddClipRange(viewangle + a1, viewangle - a1);
+#ifdef HAVE_SPHEREFRUSTRUM
+		gld_FrustrumSetup();
+#endif
+	}
+#else
 	HWR_ClearClipSegs();
+#endif
 
 	//04/01/2000: Hurdler: added for T&L
 	//                     Actually it only works on Walls and Planes
@@ -5944,6 +6083,7 @@ if (0)
 
 	HWR_RenderBSPNode((INT32)numnodes-1);
 
+#ifndef NEWCLIP
 	// Make a viewangle int so we can render things based on mouselook
 	if (player == &players[consoleplayer])
 		viewangle = localaiming;
@@ -5970,6 +6110,7 @@ if (0)
 
 		dup_viewangle += ANGLE_90;
 	}
+#endif
 
 	// Check for new console commands.
 	NetUpdate();
@@ -6112,7 +6253,9 @@ static inline void HWR_AddEngineCommands(void)
 {
 	// engine state variables
 	//CV_RegisterVar(&cv_grzbuffer);
+#ifndef NEWCLIP
 	CV_RegisterVar(&cv_grclipwalls);
+#endif
 
 	// engine development mode variables
 	// - usage may vary from version to version..
diff --git a/src/hardware/hw_md2.c b/src/hardware/hw_md2.c
index 756d5a09..cb33562d 100644
--- a/src/hardware/hw_md2.c
+++ b/src/hardware/hw_md2.c
@@ -304,8 +304,8 @@ static md2_model_t *md2_readModel(const char *filename)
 	// initialize model and read header
 
 	if (fread(&model->header, sizeof (model->header), 1, file) != 1
-		|| model->header.magic !=
-		(INT32)(('2' << 24) + ('P' << 16) + ('D' << 8) + 'I'))
+		|| model->header.magic != MD2_IDENT
+		|| model->header.version != MD2_VERSION)
 	{
 		fclose(file);
 		free(model);
@@ -319,6 +319,7 @@ static md2_model_t *md2_readModel(const char *filename)
 	{ \
 		CONS_Alert(CONS_ERROR, "md2_readModel: %s has too many " msgname " (# found: %d, maximum: %d)\n", filename, field, max); \
 		md2_freeModel (model); \
+		fclose(file); \
 		return 0; \
 	}
 
@@ -340,6 +341,7 @@ static md2_model_t *md2_readModel(const char *filename)
 			fread(model->skins, sizeof (md2_skin_t), model->header.numSkins, file))
 		{
 			md2_freeModel (model);
+			fclose(file);
 			return 0;
 		}
 	}
@@ -353,6 +355,7 @@ static md2_model_t *md2_readModel(const char *filename)
 			fread(model->texCoords, sizeof (md2_textureCoordinate_t), model->header.numTexCoords, file))
 		{
 			md2_freeModel (model);
+			fclose(file);
 			return 0;
 		}
 	}
@@ -366,6 +369,7 @@ static md2_model_t *md2_readModel(const char *filename)
 			fread(model->triangles, sizeof (md2_triangle_t), model->header.numTriangles, file))
 		{
 			md2_freeModel (model);
+			fclose(file);
 			return 0;
 		}
 	}
@@ -378,6 +382,7 @@ static md2_model_t *md2_readModel(const char *filename)
 		if (!model->frames)
 		{
 			md2_freeModel (model);
+			fclose(file);
 			return 0;
 		}
 
@@ -391,6 +396,7 @@ static md2_model_t *md2_readModel(const char *filename)
 				fread(frame, 1, model->header.frameSize, file))
 			{
 				md2_freeModel (model);
+				fclose(file);
 				return 0;
 			}
 
@@ -416,6 +422,7 @@ static md2_model_t *md2_readModel(const char *filename)
 			fread(model->glCommandBuffer, sizeof (INT32), model->header.numGlCommands, file))
 		{
 			md2_freeModel (model);
+			fclose(file);
 			return 0;
 		}
 	}
diff --git a/src/hardware/hw_md2.h b/src/hardware/hw_md2.h
index 5a7e6d2b..299d1240 100644
--- a/src/hardware/hw_md2.h
+++ b/src/hardware/hw_md2.h
@@ -23,6 +23,11 @@
 
 #include "hw_glob.h"
 
+// magic number "IDP2" or 844121161
+#define MD2_IDENT                       (INT32)(('2' << 24) + ('P' << 16) + ('D' << 8) + 'I')
+// model version
+#define MD2_VERSION                     8
+
 #define MD2_MAX_TRIANGLES               8192
 #define MD2_MAX_VERTICES                4096
 #define MD2_MAX_TEXCOORDS               4096
diff --git a/src/hardware/hw_trick.c b/src/hardware/hw_trick.c
index e9ba19ef..97d86b94 100644
--- a/src/hardware/hw_trick.c
+++ b/src/hardware/hw_trick.c
@@ -107,17 +107,17 @@ static void releaseLineChains(void)
 
 	for (i = 0; i < numsectors; i++)
 	{
-	sector = &sectors[i];
-	nextElem = sector->sectorLines;
+		sector = &sectors[i];
+		nextElem = sector->sectorLines;
 
-	while (nextElem)
-	{
-		thisElem = nextElem;
-		nextElem = thisElem->next;
-		free(thisElem);
-	}
+		while (nextElem)
+		{
+			thisElem = nextElem;
+			nextElem = thisElem->next;
+			free(thisElem);
+		}
 
-	sector->sectorLines = NULL;
+		sector->sectorLines = NULL;
 	}
 }
 
@@ -397,7 +397,7 @@ static void sortStacklist(sector_t *sector)
 		i = 0;
 		finished = true;
 
-		while (NULL != *(list+i+1))
+		while (*(list+i+1))
 		{
 			sec1 = *(list+i);
 			sec2 = *(list+i+1);
@@ -438,7 +438,7 @@ static double calcLineoutLength(sector_t *sector)
 	double length = 0.0L;
 	chain = sector->sectorLines;
 
-	while (NULL != chain) // sum up lengths of all lines
+	while (chain) // sum up lengths of all lines
 	{
 		length += lineLength(chain->line);
 		chain = chain->next;
@@ -454,7 +454,7 @@ static void calcLineouts(sector_t *sector)
 	size_t secCount = 0;
 	sector_t *encSector = *(sector->stackList);
 
-	while (NULL != encSector)
+	while (encSector)
 	{
 		if (encSector->lineoutLength < 0.0L) // if length has not yet been calculated
 		{
@@ -552,7 +552,7 @@ static boolean areBottomtexturesMissing(sector_t *thisSector)
 		if (frontSector == backSector) // skip damn renderer tricks here
 			continue;
 
-		if (frontSector == NULL || backSector == NULL)
+		if (!frontSector || !backSector)
 			continue;
 
 		sider = &sides[thisElem->line->sidenum[0]];
@@ -587,73 +587,12 @@ static boolean areBottomtexturesMissing(sector_t *thisSector)
 static boolean isCeilingFloating(sector_t *thisSector)
 {
 	sector_t *adjSector, *refSector = NULL, *frontSector, *backSector;
-	boolean floating = true;
 	linechain_t *thisElem, *nextElem;
 
 	if (!thisSector)
 		return false;
 
-	nextElem  = thisSector->sectorLines;
-
-	while (NULL != nextElem) // walk through chain
-	{
-		thisElem = nextElem;
-		nextElem = thisElem->next;
-
-		frontSector = thisElem->line->frontsector;
-		backSector  = thisElem->line->backsector;
-
-		if (frontSector == thisSector)
-			adjSector = backSector;
-		else
-			adjSector = frontSector;
-
-		if (!adjSector) // assume floating sectors have surrounding sectors
-		{
-			floating = false;
-			break;
-		}
-
-		if (!refSector)
-		{
-			refSector = adjSector;
-			continue;
-		}
-
-		// if adjacent sector has same height or more than one adjacent sector exists -> stop
-		if (thisSector->ceilingheight == adjSector->ceilingheight ||
-		   refSector != adjSector)
-		{
-			floating = false;
-			break;
-		}
-	}
-
-	// now check for walltextures
-	if (floating)
-	{
-		if (!areToptexturesMissing(thisSector))
-		{
-			floating = false;
-		}
-	}
-	return floating;
-}
-
-//
-// check if no adjacent sector has same ceiling height
-// FIXME: throw that together with isCeilingFloating??
-//
-static boolean isFloorFloating(sector_t *thisSector)
-{
-	sector_t *adjSector, *refSector = NULL, *frontSector, *backSector;
-	boolean floating = true;
-	linechain_t *thisElem, *nextElem;
-
-	if (!thisSector)
-		return false;
-
-	nextElem  = thisSector->sectorLines;
+	nextElem = thisSector->sectorLines;
 
 	while (nextElem) // walk through chain
 	{
@@ -668,36 +607,83 @@ static boolean isFloorFloating(sector_t *thisSector)
 		else
 			adjSector = frontSector;
 
-		if (NULL == adjSector) // assume floating sectors have surrounding sectors
-		{
-			floating = false;
-			break;
-		}
+		if (!adjSector) // assume floating sectors have surrounding sectors
+			return false;
 
-		if (NULL == refSector)
+#ifdef ESLOPE
+		if (adjSector->c_slope) // Don't bother with slopes
+			return false;
+#endif
+
+		if (!refSector)
 		{
 			refSector = adjSector;
 			continue;
 		}
 
 		// if adjacent sector has same height or more than one adjacent sector exists -> stop
-		if (thisSector->floorheight == adjSector->floorheight ||
-		   refSector != adjSector)
-		{
-			floating = false;
-			break;
-		}
+		if (thisSector->ceilingheight == adjSector->ceilingheight || refSector != adjSector)
+			return false;
 	}
 
 	// now check for walltextures
-	if (floating)
+	if (!areToptexturesMissing(thisSector))
+		return false;
+
+	return true;
+}
+
+//
+// check if no adjacent sector has same ceiling height
+// FIXME: throw that together with isCeilingFloating??
+//
+static boolean isFloorFloating(sector_t *thisSector)
+{
+	sector_t *adjSector, *refSector = NULL, *frontSector, *backSector;
+	linechain_t *thisElem, *nextElem;
+
+	if (!thisSector)
+		return false;
+
+	nextElem = thisSector->sectorLines;
+
+	while (nextElem) // walk through chain
 	{
-		if (!areBottomtexturesMissing(thisSector))
+		thisElem = nextElem;
+		nextElem = thisElem->next;
+
+		frontSector = thisElem->line->frontsector;
+		backSector  = thisElem->line->backsector;
+
+		if (frontSector == thisSector)
+			adjSector = backSector;
+		else
+			adjSector = frontSector;
+
+		if (!adjSector) // assume floating sectors have surrounding sectors
+			return false;
+
+#ifdef ESLOPE
+		if (adjSector->f_slope) // Don't bother with slopes
+			return false;
+#endif
+
+		if (!refSector)
 		{
-			floating = false;
+			refSector = adjSector;
+			continue;
 		}
+
+		// if adjacent sector has same height or more than one adjacent sector exists -> stop
+		if (thisSector->floorheight == adjSector->floorheight || refSector != adjSector)
+			return false;
 	}
-	return floating;
+
+	// now check for walltextures
+	if (!areBottomtexturesMissing(thisSector))
+		return false;
+
+	return true;
 }
 
 //
@@ -707,14 +693,12 @@ static fixed_t estimateCeilHeight(sector_t *thisSector)
 {
 	sector_t *adjSector;
 
-	if (!thisSector ||
-	 !thisSector->sectorLines ||
-	  !thisSector->sectorLines->line)
+	if (!thisSector || !thisSector->sectorLines || !thisSector->sectorLines->line)
 		return 0;
 
 	adjSector = thisSector->sectorLines->line->frontsector;
 	if (adjSector == thisSector)
-	adjSector = thisSector->sectorLines->line->backsector;
+		adjSector = thisSector->sectorLines->line->backsector;
 
 	if (!adjSector)
 		return 0;
@@ -729,17 +713,15 @@ static fixed_t estimateFloorHeight(sector_t *thisSector)
 {
 	sector_t *adjSector;
 
-	if (!thisSector ||
-	 !thisSector->sectorLines ||
-	  !thisSector->sectorLines->line)
-	return 0;
+	if (!thisSector || !thisSector->sectorLines || !thisSector->sectorLines->line)
+		return 0;
 
 	adjSector = thisSector->sectorLines->line->frontsector;
 	if (adjSector == thisSector)
-	adjSector = thisSector->sectorLines->line->backsector;
+		adjSector = thisSector->sectorLines->line->backsector;
 
-	if (NULL == adjSector)
-	return 0;
+	if (!adjSector)
+		return 0;
 
 	return adjSector->floorheight;
 }
@@ -845,18 +827,12 @@ void HWR_CorrectSWTricks(void)
 		// correct height of floating sectors
 		if (isCeilingFloating(floatSector))
 		{
-			fixed_t corrheight;
-
-			corrheight = estimateCeilHeight(floatSector);
-			floatSector->virtualCeilingheight = corrheight;
+			floatSector->virtualCeilingheight = estimateCeilHeight(floatSector);
 			floatSector->virtualCeiling = true;
 		}
 		if (isFloorFloating(floatSector))
 		{
-			fixed_t corrheight;
-
-			corrheight = estimateFloorHeight(floatSector);
-			floatSector->virtualFloorheight = corrheight;
+			floatSector->virtualFloorheight = estimateFloorHeight(floatSector);
 			floatSector->virtualFloor = true;
 		}
 	}
diff --git a/src/hu_stuff.h b/src/hu_stuff.h
index 5356ba8a..a5c81e6e 100644
--- a/src/hu_stuff.h
+++ b/src/hu_stuff.h
@@ -84,7 +84,7 @@ void HU_Init(void);
 void HU_LoadGraphics(void);
 
 // reset heads up when consoleplayer respawns.
-FUNCMATH void HU_Start(void);
+void HU_Start(void);
 
 boolean HU_Responder(event_t *ev);
 
diff --git a/src/i_sound.h b/src/i_sound.h
index 2f73017d..bc9829fd 100644
--- a/src/i_sound.h
+++ b/src/i_sound.h
@@ -265,4 +265,4 @@ void I_PlayCD(UINT8 track, UINT8 looping);
 */
 boolean I_SetVolumeCD(INT32 volume);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/i_tcp.c b/src/i_tcp.c
index 6488e984..0728c7aa 100644
--- a/src/i_tcp.c
+++ b/src/i_tcp.c
@@ -262,6 +262,33 @@ static void wattcp_outch(char s)
 }
 #endif
 
+#ifdef USE_WINSOCK
+// stupid microsoft makes things complicated
+static char *get_WSAErrorStr(int e)
+{
+	static char buf[256]; // allow up to 255 bytes
+
+	buf[0] = '\0';
+
+	FormatMessageA(
+		FORMAT_MESSAGE_FROM_SYSTEM |
+		FORMAT_MESSAGE_IGNORE_INSERTS,
+		NULL,
+		(DWORD)e,
+		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+		(LPTSTR)buf,
+		sizeof (buf),
+		NULL);
+
+	if (!buf[0]) // provide a fallback error message if no message is available for some reason
+		sprintf(buf, "Unknown error");
+
+	return buf;
+}
+#undef strerror
+#define strerror get_WSAErrorStr
+#endif
+
 #ifdef USE_WINSOCK2
 #define inet_ntop inet_ntopA
 #define HAVE_NTOP
@@ -759,9 +786,13 @@ static void SOCK_Send(void)
 			&clientaddress[doomcom->remotenode].any, d);
 	}
 
-	if (c == ERRSOCKET && errno != ECONNREFUSED && errno != EWOULDBLOCK)
-		I_Error("SOCK_Send, error sending to node %d (%s) #%u: %s", doomcom->remotenode,
-			SOCK_GetNodeAddress(doomcom->remotenode), errno, strerror(errno));
+	if (c == ERRSOCKET)
+	{
+		int e = errno; // save error code so it can't be modified later
+		if (e != ECONNREFUSED && e != EWOULDBLOCK)
+			I_Error("SOCK_Send, error sending to node %d (%s) #%u: %s", doomcom->remotenode,
+				SOCK_GetNodeAddress(doomcom->remotenode), e, strerror(e));
+	}
 }
 #endif
 
diff --git a/src/m_misc.c b/src/m_misc.c
index 5c4e7f2f..37d734ec 100644
--- a/src/m_misc.c
+++ b/src/m_misc.c
@@ -58,7 +58,7 @@ typedef off_t off64_t;
 
 #if defined(__MINGW32__) && ((__GNUC__ > 7) || (__GNUC__ == 6 && __GNUC_MINOR__ >= 3))
 #define PRIdS "u"
-#elif defined (_WIN32) 
+#elif defined (_WIN32)
 #define PRIdS "Iu"
 #elif defined (_PSP) || defined (_arch_dreamcast) || defined (DJGPP) || defined (_WII) || defined (_NDS) || defined (_PS3)
 #define PRIdS "u"
@@ -646,11 +646,11 @@ static void M_PNGhdr(png_structp png_ptr, png_infop png_info_ptr, PNG_CONST png_
 static void M_PNGText(png_structp png_ptr, png_infop png_info_ptr, PNG_CONST png_byte movie)
 {
 #ifdef PNG_TEXT_SUPPORTED
-#define SRB2PNGTXT 10 //PNG_KEYWORD_MAX_LENGTH(79) is the max
+#define SRB2PNGTXT 11 //PNG_KEYWORD_MAX_LENGTH(79) is the max
 	png_text png_infotext[SRB2PNGTXT];
 	char keytxt[SRB2PNGTXT][12] = {
 	"Title", "Description", "Playername", "Mapnum", "Mapname",
-	"Location", "Interface", "Revision", "Build Date", "Build Time"};
+	"Location", "Interface", "Render Mode", "Revision", "Build Date", "Build Time"};
 	char titletxt[] = "Sonic Robo Blast 2 " VERSIONSTRING;
 	png_charp playertxt =  cv_playername.zstring;
 	char desctxt[] = "SRB2 Screenshot";
@@ -666,6 +666,7 @@ static void M_PNGText(png_structp png_ptr, png_infop png_info_ptr, PNG_CONST png
 #else
 	 "Unknown";
 #endif
+	char rendermodetxt[9];
 	char maptext[8];
 	char lvlttltext[48];
 	char locationtxt[40];
@@ -673,6 +674,19 @@ static void M_PNGText(png_structp png_ptr, png_infop png_info_ptr, PNG_CONST png
 	char ctdate[40];
 	char cttime[40];
 
+	switch (rendermode)
+	{
+		case render_soft:
+			strcpy(rendermodetxt, "Software");
+			break;
+		case render_opengl:
+			strcpy(rendermodetxt, "OpenGL");
+			break;
+		default: // Just in case
+			strcpy(rendermodetxt, "None");
+			break;
+	}
+
 	if (gamestate == GS_LEVEL)
 		snprintf(maptext, 8, "%s", G_BuildMapName(gamemap));
 	else
@@ -710,9 +724,10 @@ static void M_PNGText(png_structp png_ptr, png_infop png_info_ptr, PNG_CONST png
 	png_infotext[4].text = lvlttltext;
 	png_infotext[5].text = locationtxt;
 	png_infotext[6].text = interfacetxt;
-	png_infotext[7].text = strncpy(ctrevision, comprevision, sizeof(ctrevision)-1);
-	png_infotext[8].text = strncpy(ctdate, compdate, sizeof(ctdate)-1);
-	png_infotext[9].text = strncpy(cttime, comptime, sizeof(cttime)-1);
+	png_infotext[7].text = rendermodetxt;
+	png_infotext[8].text = strncpy(ctrevision, comprevision, sizeof(ctrevision)-1);
+	png_infotext[9].text = strncpy(ctdate, compdate, sizeof(ctdate)-1);
+	png_infotext[10].text = strncpy(cttime, comptime, sizeof(cttime)-1);
 
 	png_set_text(png_ptr, png_info_ptr, png_infotext, SRB2PNGTXT);
 #undef SRB2PNGTXT
diff --git a/src/m_misc.h b/src/m_misc.h
index dc540dc1..5bd7401e 100644
--- a/src/m_misc.h
+++ b/src/m_misc.h
@@ -19,6 +19,7 @@
 #include "tables.h"
 
 #include "d_event.h" // Screenshot responder
+#include "command.h"
 
 typedef enum {
 	MM_OFF = 0,
@@ -28,6 +29,12 @@ typedef enum {
 } moviemode_t;
 extern moviemode_t moviemode;
 
+extern consvar_t cv_screenshot_option, cv_screenshot_folder;
+extern consvar_t cv_moviemode;
+extern consvar_t cv_zlib_memory, cv_zlib_level, cv_zlib_strategy, cv_zlib_window_bits;
+extern consvar_t cv_zlib_memorya, cv_zlib_levela, cv_zlib_strategya, cv_zlib_window_bitsa;
+extern consvar_t cv_apng_delay;
+
 void M_StartMovie(void);
 void M_SaveFrame(void);
 void M_StopMovie(void);
diff --git a/src/p_mobj.c b/src/p_mobj.c
index 2a29c32a..e94c4ff8 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -3506,14 +3506,15 @@ boolean P_CameraThinker(player_t *player, camera_t *thiscam, boolean resetcalled
 
 	if (player->pflags & PF_FLIPCAM && !(player->pflags & PF_NIGHTSMODE) && player->mo->eflags & MFE_VERTICALFLIP)
 		postimg = postimg_flip;
-	else if (player->awayviewtics)
+	else if (player->awayviewtics && player->awayviewmobj != NULL)	// Camera must obviously exist
 	{
 		camera_t dummycam;
 		dummycam.subsector = player->awayviewmobj->subsector;
 		dummycam.x = player->awayviewmobj->x;
 		dummycam.y = player->awayviewmobj->y;
 		dummycam.z = player->awayviewmobj->z;
-		dummycam.height = 40*FRACUNIT; // alt view height is 20*FRACUNIT
+		//dummycam.height = 40*FRACUNIT; // alt view height is 20*FRACUNIT
+		dummycam.height = 0;			 // Why? Remote viewpoint cameras have no height.
 		// Are we in water?
 		if (P_CameraCheckWater(&dummycam))
 			postimg = postimg_water;
diff --git a/src/p_mobj.h b/src/p_mobj.h
index 620028d8..56d9b6da 100644
--- a/src/p_mobj.h
+++ b/src/p_mobj.h
@@ -445,7 +445,7 @@ boolean P_SupermanLook4Players(mobj_t *actor);
 void P_DestroyRobots(void);
 void P_SnowThinker(precipmobj_t *mobj);
 void P_RainThinker(precipmobj_t *mobj);
-FUNCMATH void P_NullPrecipThinker(precipmobj_t *mobj);
+void P_NullPrecipThinker(precipmobj_t *mobj);
 void P_RemovePrecipMobj(precipmobj_t *mobj);
 void P_SetScale(mobj_t *mobj, fixed_t newscale);
 void P_XYMovement(mobj_t *mo);
diff --git a/src/p_setup.c b/src/p_setup.c
index 17a6797f..f00781a5 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -451,6 +451,7 @@ static void P_LoadSegs(lumpnum_t lumpnum)
 			//Hurdler: 04/12/2000: for now, only used in hardware mode
 			li->lightmaps = NULL; // list of static lightmap for this seg
 		}
+		li->pv1 = li->pv2 = NULL;
 #endif
 
 		li->angle = (SHORT(ml->angle))<<FRACBITS;
diff --git a/src/p_user.c b/src/p_user.c
index 7e206930..34191cdf 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -8365,16 +8365,12 @@ boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcall
 	// Make player translucent if camera is too close (only in single player).
 	if (!(multiplayer || netgame) && !splitscreen)
 	{
-		fixed_t vx = 0, vy = 0;
-		if (player->awayviewtics) {
+		fixed_t vx = thiscam->x, vy = thiscam->y;
+		if (player->awayviewtics && player->awayviewmobj != NULL)		// Camera must obviously exist
+		{
 			vx = player->awayviewmobj->x;
 			vy = player->awayviewmobj->y;
 		}
-		else
-		{
-			vx = thiscam->x;
-			vy = thiscam->y;
-		}
 
 		if (P_AproxDistance(vx - player->mo->x, vy - player->mo->y) < FixedMul(48*FRACUNIT, mo->scale))
 			player->mo->flags2 |= MF2_SHADOW;
@@ -8710,8 +8706,9 @@ void P_PlayerThink(player_t *player)
 	if (player->flashcount)
 		player->flashcount--;
 
-	if (player->awayviewtics)
-		player->awayviewtics--;
+	// By the time P_MoveChaseCamera is called, this might be zero. Do not do it here.
+	//if (player->awayviewtics)
+	//	player->awayviewtics--;
 
 	/// \note do this in the cheat code
 	if (player->pflags & PF_NOCLIP)
@@ -9489,6 +9486,9 @@ void P_PlayerAfterThink(player_t *player)
 		}
 	}
 
+	if (player->awayviewtics)
+		player->awayviewtics--;
+
 	// spectator invisibility and nogravity.
 	if ((netgame || multiplayer) && player->spectator)
 	{
diff --git a/src/r_bsp.c b/src/r_bsp.c
index abb11204..4ce89f00 100644
--- a/src/r_bsp.c
+++ b/src/r_bsp.c
@@ -365,6 +365,36 @@ sector_t *R_FakeFlat(sector_t *sec, sector_t *tempsec, INT32 *floorlightlevel,
 	return sec;
 }
 
+boolean R_IsEmptyLine(seg_t *line, sector_t *front, sector_t *back)
+{
+	return (
+#ifdef POLYOBJECTS
+		!line->polyseg &&
+#endif
+		back->ceilingpic == front->ceilingpic
+		&& back->floorpic == front->floorpic
+#ifdef ESLOPE
+		&& back->f_slope == front->f_slope
+		&& back->c_slope == front->c_slope
+#endif
+		&& back->lightlevel == front->lightlevel
+		&& !line->sidedef->midtexture
+		// Check offsets too!
+		&& back->floor_xoffs == front->floor_xoffs
+		&& back->floor_yoffs == front->floor_yoffs
+		&& back->floorpic_angle == front->floorpic_angle
+		&& back->ceiling_xoffs == front->ceiling_xoffs
+		&& back->ceiling_yoffs == front->ceiling_yoffs
+		&& back->ceilingpic_angle == front->ceilingpic_angle
+		// Consider altered lighting.
+		&& back->floorlightsec == front->floorlightsec
+		&& back->ceilinglightsec == front->ceilinglightsec
+		// Consider colormaps
+		&& back->extra_colormap == front->extra_colormap
+		&& ((!front->ffloors && !back->ffloors)
+		|| front->tag == back->tag));
+}
+
 //
 // R_AddLine
 // Clips the given segment and adds any visible pieces to the line list.
@@ -526,36 +556,8 @@ static void R_AddLine(seg_t *line)
 	// Identical floor and ceiling on both sides, identical light levels on both sides,
 	// and no middle texture.
 
-	if (
-#ifdef POLYOBJECTS
-		!line->polyseg &&
-#endif
-		backsector->ceilingpic == frontsector->ceilingpic
-		&& backsector->floorpic == frontsector->floorpic
-#ifdef ESLOPE
-		&& backsector->f_slope == frontsector->f_slope
-		&& backsector->c_slope == frontsector->c_slope
-#endif
-		&& backsector->lightlevel == frontsector->lightlevel
-		&& !curline->sidedef->midtexture
-		// Check offsets too!
-		&& backsector->floor_xoffs == frontsector->floor_xoffs
-		&& backsector->floor_yoffs == frontsector->floor_yoffs
-		&& backsector->floorpic_angle == frontsector->floorpic_angle
-		&& backsector->ceiling_xoffs == frontsector->ceiling_xoffs
-		&& backsector->ceiling_yoffs == frontsector->ceiling_yoffs
-		&& backsector->ceilingpic_angle == frontsector->ceilingpic_angle
-		// Consider altered lighting.
-		&& backsector->floorlightsec == frontsector->floorlightsec
-		&& backsector->ceilinglightsec == frontsector->ceilinglightsec
-		// Consider colormaps
-		&& backsector->extra_colormap == frontsector->extra_colormap
-		&& ((!frontsector->ffloors && !backsector->ffloors)
-		|| frontsector->tag == backsector->tag))
-	{
+	if (R_IsEmptyLine(line, frontsector, backsector))
 		return;
-	}
-
 
 clippass:
 	R_ClipPassWallSegment(x1, x2 - 1);
diff --git a/src/r_bsp.h b/src/r_bsp.h
index e871b5dd..80824831 100644
--- a/src/r_bsp.h
+++ b/src/r_bsp.h
@@ -50,6 +50,7 @@ extern polyobj_t **po_ptrs; // temp ptr array to sort polyobject pointers
 
 sector_t *R_FakeFlat(sector_t *sec, sector_t *tempsec, INT32 *floorlightlevel,
 	INT32 *ceilinglightlevel, boolean back);
+boolean R_IsEmptyLine(seg_t *line, sector_t *front, sector_t *back);
 
 INT32 R_GetPlaneLight(sector_t *sector, fixed_t planeheight, boolean underside);
 void R_Prep3DFloors(sector_t *sector);
diff --git a/src/r_defs.h b/src/r_defs.h
index b8c21764..9c0b7d2b 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -574,6 +574,9 @@ typedef struct seg_s
 	sector_t *backsector;
 
 #ifdef HWRENDER
+	// new pointers so that AdjustSegs doesn't mess with v1/v2
+	void *pv1; // polyvertex_t
+	void *pv2; // polyvertex_t
 	float flength; // length of the seg, used by hardware renderer
 
 	lightmap_t *lightmaps; // for static lightmap
diff --git a/src/r_draw.h b/src/r_draw.h
index 6d85bd6a..9cf7e9d5 100644
--- a/src/r_draw.h
+++ b/src/r_draw.h
@@ -161,6 +161,7 @@ void R_DrawSplat_8(void);
 void R_DrawTranslucentSplat_8(void);
 void R_DrawTranslucentSpan_8(void);
 void R_Draw2sMultiPatchColumn_8(void);
+void R_Draw2sMultiPatchTranslucentColumn_8(void);
 void R_DrawFogSpan_8(void);
 void R_DrawFogColumn_8(void);
 void R_DrawColumnShadowed_8(void);
diff --git a/src/r_draw8.c b/src/r_draw8.c
index 800f28b6..f9c5b7ad 100644
--- a/src/r_draw8.c
+++ b/src/r_draw8.c
@@ -203,6 +203,103 @@ void R_Draw2sMultiPatchColumn_8(void)
 	}
 }
 
+void R_Draw2sMultiPatchTranslucentColumn_8(void)
+{
+	INT32 count;
+	register UINT8 *dest;
+	register fixed_t frac;
+	fixed_t fracstep;
+
+	count = dc_yh - dc_yl;
+
+	if (count < 0) // Zero length, column does not exceed a pixel.
+		return;
+
+#ifdef RANGECHECK
+	if ((unsigned)dc_x >= (unsigned)vid.width || dc_yl < 0 || dc_yh >= vid.height)
+		return;
+#endif
+
+	// Framebuffer destination address.
+	// Use ylookup LUT to avoid multiply with ScreenWidth.
+	// Use columnofs LUT for subwindows?
+
+	//dest = ylookup[dc_yl] + columnofs[dc_x];
+	dest = &topleft[dc_yl*vid.width + dc_x];
+
+	count++;
+
+	// Determine scaling, which is the only mapping to be done.
+	fracstep = dc_iscale;
+	//frac = dc_texturemid + (dc_yl - centery)*fracstep;
+	frac = (dc_texturemid + FixedMul((dc_yl << FRACBITS) - centeryfrac, fracstep))*(!dc_hires);
+
+	// Inner loop that does the actual texture mapping, e.g. a DDA-like scaling.
+	// This is as fast as it gets.
+	{
+		register const UINT8 *source = dc_source;
+		register const UINT8 *transmap = dc_transmap;
+		register const lighttable_t *colormap = dc_colormap;
+		register INT32 heightmask = dc_texheight-1;
+		register UINT8 val;
+		if (dc_texheight & heightmask)   // not a power of 2 -- killough
+		{
+			heightmask++;
+			heightmask <<= FRACBITS;
+
+			if (frac < 0)
+				while ((frac += heightmask) <  0);
+			else
+				while (frac >= heightmask)
+					frac -= heightmask;
+
+			do
+			{
+				// Re-map color indices from wall texture column
+				//  using a lighting/special effects LUT.
+				// heightmask is the Tutti-Frutti fix
+				val = source[frac>>FRACBITS];
+
+				if (val != TRANSPARENTPIXEL)
+					*dest = *(transmap + (colormap[val]<<8) + (*dest));
+
+				dest += vid.width;
+
+				// Avoid overflow.
+				if (fracstep > 0x7FFFFFFF - frac)
+					frac += fracstep - heightmask;
+				else
+					frac += fracstep;
+
+				while (frac >= heightmask)
+					frac -= heightmask;
+			} while (--count);
+		}
+		else
+		{
+			while ((count -= 2) >= 0) // texture height is a power of 2
+			{
+				val = source[(frac>>FRACBITS) & heightmask];
+				if (val != TRANSPARENTPIXEL)
+					*dest = *(transmap + (colormap[val]<<8) + (*dest));
+				dest += vid.width;
+				frac += fracstep;
+				val = source[(frac>>FRACBITS) & heightmask];
+				if (val != TRANSPARENTPIXEL)
+					*dest = *(transmap + (colormap[val]<<8) + (*dest));
+				dest += vid.width;
+				frac += fracstep;
+			}
+			if (count & 1)
+			{
+				val = source[(frac>>FRACBITS) & heightmask];
+				if (val != TRANSPARENTPIXEL)
+					*dest = *(transmap + (colormap[val]<<8) + (*dest));
+			}
+		}
+	}
+}
+
 /**	\brief The R_DrawShadeColumn_8 function
 	Experiment to make software go faster. Taken from the Boom source
 */
diff --git a/src/r_plane.h b/src/r_plane.h
index 16c8c12a..dff58669 100644
--- a/src/r_plane.h
+++ b/src/r_plane.h
@@ -87,7 +87,7 @@ extern lighttable_t **planezlight;
 extern fixed_t *yslope;
 extern fixed_t distscale[MAXVIDWIDTH];
 
-FUNCMATH void R_InitPlanes(void);
+void R_InitPlanes(void);
 void R_PortalStoreClipValues(INT32 start, INT32 end, INT16 *ceil, INT16 *floor, fixed_t *scale);
 void R_PortalRestoreClipValues(INT32 start, INT32 end, INT16 *ceil, INT16 *floor, fixed_t *scale);
 void R_ClearPlanes(void);
diff --git a/src/r_segs.c b/src/r_segs.c
index 502ff330..40184bdd 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -271,6 +271,8 @@ static void R_Render2sidedMultiPatchColumn(column_t *column)
 
 		if (colfunc == wallcolfunc)
 			twosmultipatchfunc();
+		else if (colfunc == fuzzcolfunc)
+			twosmultipatchtransfunc();
 		else
 			colfunc();
 	}
diff --git a/src/r_splats.h b/src/r_splats.h
index c0ba6881..349d8fa7 100644
--- a/src/r_splats.h
+++ b/src/r_splats.h
@@ -63,11 +63,7 @@ typedef struct floorsplat_s
 fixed_t P_SegLength(seg_t *seg);
 
 // call at P_SetupLevel()
-#if !(defined (WALLSPLATS) || defined (FLOORSPLATS))
-FUNCMATH void R_ClearLevelSplats(void);
-#else
 void R_ClearLevelSplats(void);
-#endif
 
 #ifdef WALLSPLATS
 void R_AddWallSplat(line_t *wallline, INT16 sectorside, const char *patchname, fixed_t top,
diff --git a/src/s_sound.c b/src/s_sound.c
index e8d94ca8..3518ccb8 100644
--- a/src/s_sound.c
+++ b/src/s_sound.c
@@ -36,6 +36,7 @@ extern INT32 msg_id;
 #include "d_main.h"
 #include "r_sky.h" // skyflatnum
 #include "p_local.h" // camera info
+#include "m_misc.h" // for tunes command
 
 #ifdef HW3SOUND
 // 3D Sound Interface
@@ -46,6 +47,8 @@ static INT32 S_AdjustSoundParams(const mobj_t *listener, const mobj_t *source, I
 
 CV_PossibleValue_t soundvolume_cons_t[] = {{0, "MIN"}, {31, "MAX"}, {0, NULL}};
 static void SetChannelsNum(void);
+static void Command_Tunes_f(void);
+static void Command_RestartAudio_f(void);
 
 // commands for music and sound servers
 #ifdef MUSSERV
@@ -89,6 +92,7 @@ consvar_t cv_numChannels = {"snd_channels", "32", CV_SAVE|CV_CALL, CV_Unsigned,
 #endif
 
 static consvar_t surround = {"surround", "Off", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
+consvar_t cv_resetmusic = {"resetmusic", "No", CV_SAVE, CV_YesNo, NULL, 0, NULL, NULL, 0, 0, NULL};
 
 #define S_MAX_VOLUME 127
 
@@ -243,6 +247,11 @@ void S_RegisterSoundStuff(void)
 #endif
 	CV_RegisterVar(&surround);
 	CV_RegisterVar(&cv_samplerate);
+	CV_RegisterVar(&cv_resetmusic);
+
+	COM_AddCommand("tunes", Command_Tunes_f);
+	COM_AddCommand("restartaudio", Command_RestartAudio_f);
+
 
 #if defined (macintosh) && !defined (HAVE_SDL) // mp3 playlist stuff
 	{
@@ -1503,3 +1512,88 @@ void S_Start(void)
 		S_StopMusic();
 	S_ChangeMusic(mapmusname, mapmusflags, true);
 }
+
+static void Command_Tunes_f(void)
+{
+	const char *tunearg;
+	UINT16 tunenum, track = 0;
+	const size_t argc = COM_Argc();
+
+	if (argc < 2) //tunes slot ...
+	{
+		CONS_Printf("tunes <name/num> [track] [speed] / <-show> / <-default> / <-none>:\n");
+		CONS_Printf(M_GetText("Play an arbitrary music lump. If a map number is used, 'MAP##M' is played.\n"));
+		CONS_Printf(M_GetText("If the format supports multiple songs, you can specify which one to play.\n\n"));
+		CONS_Printf(M_GetText("* With \"-show\", shows the currently playing tune and track.\n"));
+		CONS_Printf(M_GetText("* With \"-default\", returns to the default music for the map.\n"));
+		CONS_Printf(M_GetText("* With \"-none\", any music playing will be stopped.\n"));
+		return;
+	}
+
+	tunearg = COM_Argv(1);
+	tunenum = (UINT16)atoi(tunearg);
+	track = 0;
+
+	if (!strcasecmp(tunearg, "-show"))
+	{
+		CONS_Printf(M_GetText("The current tune is: %s [track %d]\n"),
+			mapmusname, (mapmusflags & MUSIC_TRACKMASK));
+		return;
+	}
+	if (!strcasecmp(tunearg, "-none"))
+	{
+		S_StopMusic();
+		return;
+	}
+	else if (!strcasecmp(tunearg, "-default"))
+	{
+		tunearg = mapheaderinfo[gamemap-1]->musname;
+		track = mapheaderinfo[gamemap-1]->mustrack;
+	}
+	else if (!tunearg[2] && toupper(tunearg[0]) >= 'A' && toupper(tunearg[0]) <= 'Z')
+		tunenum = (UINT16)M_MapNumber(tunearg[0], tunearg[1]);
+
+	if (tunenum && tunenum >= 1036)
+	{
+		CONS_Alert(CONS_NOTICE, M_GetText("Valid music slots are 1 to 1035.\n"));
+		return;
+	}
+	if (!tunenum && strlen(tunearg) > 6) // This is automatic -- just show the error just in case
+		CONS_Alert(CONS_NOTICE, M_GetText("Music name too long - truncated to six characters.\n"));
+
+	if (argc > 2)
+		track = (UINT16)atoi(COM_Argv(2))-1;
+
+	if (tunenum)
+		snprintf(mapmusname, 7, "%sM", G_BuildMapName(tunenum));
+	else
+		strncpy(mapmusname, tunearg, 7);
+	mapmusname[6] = 0;
+	mapmusflags = (track & MUSIC_TRACKMASK);
+
+	S_ChangeMusic(mapmusname, mapmusflags, true);
+
+	if (argc > 3)
+	{
+		float speed = (float)atof(COM_Argv(3));
+		if (speed > 0.0f)
+			S_SpeedMusic(speed);
+	}
+}
+
+static void Command_RestartAudio_f(void)
+{
+	S_StopMusic();
+	S_StopSounds();
+	I_ShutdownMusic();
+	I_ShutdownSound();
+	I_StartupSound();
+	I_InitMusic();
+
+// These must be called or no sound and music until manually set.
+
+	I_SetSfxVolume(cv_soundvolume.value);
+	S_SetMusicVolume(cv_digmusicvolume.value, cv_midimusicvolume.value);
+	if (Playing()) // Gotta make sure the player is in a level
+		P_RestoreMusic(&players[consoleplayer]);
+}
diff --git a/src/s_sound.h b/src/s_sound.h
index a2d51a59..bb8d199d 100644
--- a/src/s_sound.h
+++ b/src/s_sound.h
@@ -26,6 +26,7 @@
 extern consvar_t stereoreverse;
 extern consvar_t cv_soundvolume, cv_digmusicvolume, cv_midimusicvolume;
 extern consvar_t cv_numChannels;
+extern consvar_t cv_resetmusic;
 
 #ifdef SNDSERV
 extern consvar_t sndserver_cmd, sndserver_arg;
diff --git a/src/screen.c b/src/screen.c
index 2780edb6..fdd8eb7b 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -49,6 +49,7 @@ void (*splatfunc)(void); // span drawer w/ transparency
 void (*basespanfunc)(void); // default span func for color mode
 void (*transtransfunc)(void); // translucent translated column drawer
 void (*twosmultipatchfunc)(void); // for cols with transparent pixels
+void (*twosmultipatchtransfunc)(void); // for cols with transparent pixels AND translucency
 
 // ------------------
 // global video state
@@ -70,11 +71,7 @@ consvar_t cv_scr_depth = {"scr_depth", "16 bits", CV_SAVE, scr_depth_cons_t, NUL
 #endif
 consvar_t cv_renderview = {"renderview", "On", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
 
-#ifdef DIRECTFULLSCREEN
-static FUNCMATH void SCR_ChangeFullscreen (void);
-#else
 static void SCR_ChangeFullscreen (void);
-#endif
 
 consvar_t cv_fullscreen = {"fullscreen", "Yes", CV_SAVE|CV_CALL, CV_YesNo, SCR_ChangeFullscreen, 0, NULL, NULL, 0, 0, NULL};
 
@@ -127,6 +124,7 @@ void SCR_SetMode(void)
 		fuzzcolfunc = R_DrawTranslucentColumn_8;
 		walldrawerfunc = R_DrawWallColumn_8;
 		twosmultipatchfunc = R_Draw2sMultiPatchColumn_8;
+		twosmultipatchtransfunc = R_Draw2sMultiPatchTranslucentColumn_8;
 #ifdef RUSEASM
 		if (R_ASM)
 		{
diff --git a/src/screen.h b/src/screen.h
index 2dff4590..a61de7f9 100644
--- a/src/screen.h
+++ b/src/screen.h
@@ -136,6 +136,7 @@ extern void (*basespanfunc)(void);
 extern void (*splatfunc)(void);
 extern void (*transtransfunc)(void);
 extern void (*twosmultipatchfunc)(void);
+extern void (*twosmultipatchtransfunc)(void);
 
 // -----
 // CPUID
diff --git a/src/sdl/IMG_xpm.c b/src/sdl/IMG_xpm.c
index 8adfd343..af76ec1d 100644
--- a/src/sdl/IMG_xpm.c
+++ b/src/sdl/IMG_xpm.c
@@ -45,9 +45,10 @@
 #if 0
 #include "SDL_image.h"
 #else
-extern SDLCALL int SDLCALL IMG_isXPM(SDL_RWops *src);
-extern SDLCALL SDL_Surface *IMG_LoadXPM_RW(SDL_RWops *src);
-extern SDLCALL SDL_Surface * SDLCALL IMG_ReadXPMFromArray(const char **xpm);
+// SDLCALL terms removed from original SDL_image declarations
+int IMG_isXPM(SDL_RWops *src);
+SDL_Surface *IMG_LoadXPM_RW(SDL_RWops *src);
+SDL_Surface *IMG_ReadXPMFromArray(const char **xpm);
 #define IMG_SetError    SDL_SetError
 #define IMG_GetError    SDL_GetError
 #endif
diff --git a/src/sdl/Srb2SDL-vc10.vcxproj b/src/sdl/Srb2SDL-vc10.vcxproj
index 82019264..467d2829 100644
--- a/src/sdl/Srb2SDL-vc10.vcxproj
+++ b/src/sdl/Srb2SDL-vc10.vcxproj
@@ -141,6 +141,7 @@
     <ClInclude Include="..\hardware\hw3dsdrv.h" />
     <ClInclude Include="..\hardware\hw3sound.h" />
     <ClInclude Include="..\hardware\hws_data.h" />
+    <ClInclude Include="..\hardware\hw_clip.h" />
     <ClInclude Include="..\hardware\hw_data.h" />
     <ClInclude Include="..\hardware\hw_defs.h" />
     <ClInclude Include="..\hardware\hw_dll.h" />
@@ -282,6 +283,7 @@
     <ClCompile Include="..\hardware\hw3sound.c" />
     <ClCompile Include="..\hardware\hw_bsp.c" />
     <ClCompile Include="..\hardware\hw_cache.c" />
+    <ClCompile Include="..\hardware\hw_clip.c" />
     <ClCompile Include="..\hardware\hw_draw.c" />
     <ClCompile Include="..\hardware\hw_light.c" />
     <ClCompile Include="..\hardware\hw_main.c" />
diff --git a/src/sdl/Srb2SDL-vc10.vcxproj.filters b/src/sdl/Srb2SDL-vc10.vcxproj.filters
index d04007dd..364deb49 100644
--- a/src/sdl/Srb2SDL-vc10.vcxproj.filters
+++ b/src/sdl/Srb2SDL-vc10.vcxproj.filters
@@ -216,6 +216,9 @@
     <ClInclude Include="..\hardware\hws_data.h">
       <Filter>Hw_Hardware</Filter>
     </ClInclude>
+    <ClInclude Include="..\hardware\hw_clip.h">
+      <Filter>Hw_Hardware</Filter>
+    </ClInclude>
     <ClInclude Include="..\hardware\hw_data.h">
       <Filter>Hw_Hardware</Filter>
     </ClInclude>
@@ -603,6 +606,9 @@
     <ClCompile Include="..\hardware\hw_cache.c">
       <Filter>Hw_Hardware</Filter>
     </ClCompile>
+    <ClCompile Include="..\hardware\hw_clip.c">
+      <Filter>Hw_Hardware</Filter>
+    </ClCompile>
     <ClCompile Include="..\hardware\hw_draw.c">
       <Filter>Hw_Hardware</Filter>
     </ClCompile>
diff --git a/src/sdl/i_cdmus.c b/src/sdl/i_cdmus.c
index 3105f512..5d086e73 100644
--- a/src/sdl/i_cdmus.c
+++ b/src/sdl/i_cdmus.c
@@ -12,19 +12,19 @@ consvar_t cd_volume = {"cd_volume","31",CV_SAVE,soundvolume_cons_t, NULL, 0, NUL
 consvar_t cdUpdate  = {"cd_update","1",CV_SAVE, NULL, NULL, 0, NULL, NULL, 0, 0, NULL};
 
 
-FUNCMATH void I_InitCD(void){}
+void I_InitCD(void){}
 
-FUNCMATH void I_StopCD(void){}
+void I_StopCD(void){}
 
-FUNCMATH void I_PauseCD(void){}
+void I_PauseCD(void){}
 
-FUNCMATH void I_ResumeCD(void){}
+void I_ResumeCD(void){}
 
-FUNCMATH void I_ShutdownCD(void){}
+void I_ShutdownCD(void){}
 
-FUNCMATH void I_UpdateCD(void){}
+void I_UpdateCD(void){}
 
-FUNCMATH void I_PlayCD(UINT8 track, UINT8 looping)
+void I_PlayCD(UINT8 track, UINT8 looping)
 {
 	(void)track;
 	(void)looping;
diff --git a/src/sdl/i_system.c b/src/sdl/i_system.c
index 7b14f1f1..5e0bc20e 100644
--- a/src/sdl/i_system.c
+++ b/src/sdl/i_system.c
@@ -1,8 +1,11 @@
 // Emacs style mode select   -*- C++ -*-
+//
+// SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 //
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Portions Copyright (C) 1998-2000 by DooM Legacy Team.
+// Copyright (C) 2014-2018 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
@@ -1927,14 +1930,14 @@ void I_StartupMouse2(void)
 //
 // I_Tactile
 //
-FUNCMATH void I_Tactile(FFType pFFType, const JoyFF_t *FFEffect)
+void I_Tactile(FFType pFFType, const JoyFF_t *FFEffect)
 {
 	// UNUSED.
 	(void)pFFType;
 	(void)FFEffect;
 }
 
-FUNCMATH void I_Tactile2(FFType pFFType, const JoyFF_t *FFEffect)
+void I_Tactile2(FFType pFFType, const JoyFF_t *FFEffect)
 {
 	// UNUSED.
 	(void)pFFType;
@@ -1945,7 +1948,7 @@ FUNCMATH void I_Tactile2(FFType pFFType, const JoyFF_t *FFEffect)
 */
 static ticcmd_t emptycmd;
 
-FUNCMATH ticcmd_t *I_BaseTiccmd(void)
+ticcmd_t *I_BaseTiccmd(void)
 {
 	return &emptycmd;
 }
@@ -1954,7 +1957,7 @@ FUNCMATH ticcmd_t *I_BaseTiccmd(void)
 */
 static ticcmd_t emptycmd2;
 
-FUNCMATH ticcmd_t *I_BaseTiccmd2(void)
+ticcmd_t *I_BaseTiccmd2(void)
 {
 	return &emptycmd2;
 }
@@ -2048,7 +2051,7 @@ tic_t I_GetTime (void)
 //
 //I_StartupTimer
 //
-FUNCMATH void I_StartupTimer(void)
+void I_StartupTimer(void)
 {
 #ifdef _WIN32
 	// for win2k time bug
@@ -2147,11 +2150,11 @@ void I_WaitVBL(INT32 count)
 	SDL_Delay(count);
 }
 
-FUNCMATH void I_BeginRead(void)
+void I_BeginRead(void)
 {
 }
 
-FUNCMATH void I_EndRead(void)
+void I_EndRead(void)
 {
 }
 
@@ -2939,5 +2942,5 @@ const CPUInfoFlags *I_CPUInfo(void)
 }
 
 // note CPUAFFINITY code used to reside here
-FUNCMATH void I_RegisterSysCommands(void) {}
+void I_RegisterSysCommands(void) {}
 #endif
diff --git a/src/sdl/i_video.c b/src/sdl/i_video.c
index 30ef1b27..3cc29dbb 100644
--- a/src/sdl/i_video.c
+++ b/src/sdl/i_video.c
@@ -1,8 +1,10 @@
 // Emacs style mode select   -*- C++ -*-
+// SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 //
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Portions Copyright (C) 1998-2000 by DooM Legacy Team.
+// Copyright (C) 2014-2018 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
@@ -1053,7 +1055,7 @@ void I_SetPalette(RGBA_t *palette)
 }
 
 // return number of fullscreen + X11 modes
-FUNCMATH INT32 VID_NumModes(void)
+INT32 VID_NumModes(void)
 {
 	if (USE_FULLSCREEN && numVidModes != -1)
 		return numVidModes - firstEntry;
@@ -1061,7 +1063,7 @@ FUNCMATH INT32 VID_NumModes(void)
 		return MAXWINMODES;
 }
 
-FUNCMATH const char *VID_GetModeName(INT32 modeNum)
+const char *VID_GetModeName(INT32 modeNum)
 {
 #if 0
 	if (USE_FULLSCREEN && numVidModes != -1) // fullscreen modes
@@ -1091,7 +1093,7 @@ FUNCMATH const char *VID_GetModeName(INT32 modeNum)
 	return &vidModeName[modeNum][0];
 }
 
-FUNCMATH INT32 VID_GetModeForSize(INT32 w, INT32 h)
+INT32 VID_GetModeForSize(INT32 w, INT32 h)
 {
 	int i;
 	for (i = 0; i < MAXWINMODES; i++)
diff --git a/src/sdl/mixer_sound.c b/src/sdl/mixer_sound.c
index 4d86d7a3..a3c42199 100644
--- a/src/sdl/mixer_sound.c
+++ b/src/sdl/mixer_sound.c
@@ -1,3 +1,11 @@
+// SONIC ROBO BLAST 2
+//-----------------------------------------------------------------------------
+// Copyright (C) 2014-2018 by Sonic Team Junior.
+//
+// This program is free software distributed under the
+// terms of the GNU General Public License, version 2.
+// See the 'LICENSE' file for more details.
+//-----------------------------------------------------------------------------
 /// \file
 /// \brief SDL Mixer interface for sound
 
@@ -135,7 +143,7 @@ void I_ShutdownSound(void)
 #endif
 }
 
-FUNCMATH void I_UpdateSound(void)
+void I_UpdateSound(void)
 {
 }
 
@@ -504,7 +512,7 @@ static void mix_gme(void *udata, Uint8 *stream, int len)
 /// Music System
 /// ------------------------
 
-FUNCMATH void I_InitMusic(void)
+void I_InitMusic(void)
 {
 }
 
@@ -542,7 +550,7 @@ boolean I_SongPlaying(void)
 #ifdef HAVE_LIBGME
 		(I_SongType() == MU_GME && gme) ||
 #endif
-		(boolean)music
+		music != NULL
 	);
 }
 
@@ -852,4 +860,4 @@ boolean I_SetSongTrack(int track)
 	return false;
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/sdl/sdl_sound.c b/src/sdl/sdl_sound.c
index 9f8a3e29..f4796cd8 100644
--- a/src/sdl/sdl_sound.c
+++ b/src/sdl/sdl_sound.c
@@ -219,7 +219,7 @@ static void Snd_UnlockAudio(void) //Alam: Unlock audio data and reinstall audio
 #endif
 }
 
-FUNCMATH static inline Uint16 Snd_LowerRate(Uint16 sr)
+static inline Uint16 Snd_LowerRate(Uint16 sr)
 {
 	if (sr <= audio.freq) // already lowered rate?
 		return sr; // good then
diff --git a/src/sdl12/mixer_sound.c b/src/sdl12/mixer_sound.c
index daf09ab9..dcae19b0 100644
--- a/src/sdl12/mixer_sound.c
+++ b/src/sdl12/mixer_sound.c
@@ -1,3 +1,11 @@
+// SONIC ROBO BLAST 2
+//-----------------------------------------------------------------------------
+// Copyright (C) 2008-2018 by Sonic Team Junior.
+//
+// This program is free software distributed under the
+// terms of the GNU General Public License, version 2.
+// See the 'LICENSE' file for more details.
+//-----------------------------------------------------------------------------
 /// \file
 /// \brief SDL Mixer interface for sound
 
diff --git a/src/sdl12/sdl_sound.c b/src/sdl12/sdl_sound.c
index 01a27153..ed1afd8e 100644
--- a/src/sdl12/sdl_sound.c
+++ b/src/sdl12/sdl_sound.c
@@ -236,7 +236,7 @@ static void Snd_UnlockAudio(void) //Alam: Unlock audio data and reinstall audio
 #endif
 }
 
-FUNCMATH static inline Uint16 Snd_LowerRate(Uint16 sr)
+static inline Uint16 Snd_LowerRate(Uint16 sr)
 {
 	if (sr <= audio.freq) // already lowered rate?
 		return sr; // good then
diff --git a/src/st_stuff.h b/src/st_stuff.h
index c11559d2..6fafca40 100644
--- a/src/st_stuff.h
+++ b/src/st_stuff.h
@@ -24,7 +24,7 @@
 //
 
 // Called by main loop.
-FUNCMATH void ST_Ticker(void);
+void ST_Ticker(void);
 
 // Called by main loop.
 void ST_Drawer(void);
diff --git a/src/v_video.c b/src/v_video.c
index 802a4d38..933ec0f0 100644
--- a/src/v_video.c
+++ b/src/v_video.c
@@ -331,7 +331,6 @@ void V_DrawFixedPatch(fixed_t x, fixed_t y, fixed_t pscale, INT32 scrn, patch_t
 {
 	UINT8 (*patchdrawfunc)(const UINT8*, const UINT8*, fixed_t);
 	UINT32 alphalevel = 0;
-	boolean flip = false;
 
 	fixed_t col, ofs, colfrac, rowfrac, fdup;
 	INT32 dupx, dupy;
@@ -406,22 +405,32 @@ void V_DrawFixedPatch(fixed_t x, fixed_t y, fixed_t pscale, INT32 scrn, patch_t
 	colfrac = FixedDiv(FRACUNIT, fdup);
 	rowfrac = FixedDiv(FRACUNIT, fdup);
 
-	if (scrn & V_OFFSET) // Crosshair shit
+	// So it turns out offsets aren't scaled in V_NOSCALESTART unless V_OFFSET is applied ...poo, that's terrible
+	// For now let's just at least give V_OFFSET the ability to support V_FLIP
+	// I'll probably make a better fix for 2.2 where I don't have to worry about breaking existing support for stuff
+	// -- Monster Iestyn 29/10/18
 	{
-		y -= FixedMul((SHORT(patch->topoffset)*dupy)<<FRACBITS,  pscale);
-		x -= FixedMul((SHORT(patch->leftoffset)*dupx)<<FRACBITS, pscale);
-	}
-	else
-	{
-		y -= FixedMul(SHORT(patch->topoffset)<<FRACBITS, pscale);
+		fixed_t offsetx = 0, offsety = 0;
 
+		// left offset
 		if (scrn & V_FLIP)
-		{
-			flip = true;
-			x -= FixedMul((SHORT(patch->width) - SHORT(patch->leftoffset))<<FRACBITS, pscale) + 1;
-		}
+			offsetx = FixedMul((SHORT(patch->width) - SHORT(patch->leftoffset))<<FRACBITS, pscale) + 1;
 		else
-			x -= FixedMul(SHORT(patch->leftoffset)<<FRACBITS, pscale);
+			offsetx = FixedMul(SHORT(patch->leftoffset)<<FRACBITS, pscale);
+
+		// top offset
+		// TODO: make some kind of vertical version of V_FLIP, maybe by deprecating V_OFFSET in future?!?
+		offsety = FixedMul(SHORT(patch->topoffset)<<FRACBITS, pscale);
+
+		if ((scrn & (V_NOSCALESTART|V_OFFSET)) == (V_NOSCALESTART|V_OFFSET)) // Multiply by dupx/dupy for crosshairs
+		{
+			offsetx = FixedMul(offsetx, dupx<<FRACBITS);
+			offsety = FixedMul(offsety, dupy<<FRACBITS);
+		}
+
+		// Subtract the offsets from x/y positions
+		x -= offsetx;
+		y -= offsety;
 	}
 
 	if (scrn & V_SPLITSCREEN)
@@ -497,7 +506,7 @@ void V_DrawFixedPatch(fixed_t x, fixed_t y, fixed_t pscale, INT32 scrn, patch_t
 	for (col = 0; (col>>FRACBITS) < SHORT(patch->width); col += colfrac, ++offx, desttop++)
 	{
 		INT32 topdelta, prevdelta = -1;
-		if (flip) // offx is measured from right edge instead of left
+		if (scrn & V_FLIP) // offx is measured from right edge instead of left
 		{
 			if (x+pwidth-offx < 0) // don't draw off the left of the screen (WRAP PREVENTION)
 				break;
@@ -521,7 +530,7 @@ void V_DrawFixedPatch(fixed_t x, fixed_t y, fixed_t pscale, INT32 scrn, patch_t
 			prevdelta = topdelta;
 			source = (const UINT8 *)(column) + 3;
 			dest = desttop;
-			if (flip)
+			if (scrn & V_FLIP)
 				dest = deststart + (destend - desttop);
 			dest += FixedInt(FixedMul(topdelta<<FRACBITS,fdup))*vid.width;
 
diff --git a/src/w_wad.c b/src/w_wad.c
index 3f0082a1..3789eab5 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -381,6 +381,8 @@ UINT16 W_LoadWadFile(const char *filename)
 		if (fread(&header, 1, sizeof header, handle) < sizeof header)
 		{
 			CONS_Alert(CONS_ERROR, M_GetText("Can't read wad header from %s because %s\n"), filename, strerror(ferror(handle)));
+			if (handle)
+				fclose(handle);
 			return INT16_MAX;
 		}
 
@@ -391,6 +393,8 @@ UINT16 W_LoadWadFile(const char *filename)
 			&& memcmp(header.identification, "SDLL", 4) != 0)
 		{
 			CONS_Alert(CONS_ERROR, M_GetText("%s does not have a valid WAD header\n"), filename);
+			if (handle)
+				fclose(handle);
 			return INT16_MAX;
 		}
 
@@ -405,6 +409,8 @@ UINT16 W_LoadWadFile(const char *filename)
 		{
 			CONS_Alert(CONS_ERROR, M_GetText("Wadfile directory in %s is corrupted (%s)\n"), filename, strerror(ferror(handle)));
 			free(fileinfov);
+			if (handle)
+				fclose(handle);
 			return INT16_MAX;
 		}
 
@@ -462,6 +468,8 @@ UINT16 W_LoadWadFile(const char *filename)
 		if (!memcmp(wadfiles[i]->md5sum, md5sum, 16))
 		{
 			CONS_Alert(CONS_ERROR, M_GetText("%s is already loaded\n"), filename);
+			if (handle)
+				fclose(handle);
 			return INT16_MAX;
 		}
 	}
diff --git a/src/win32/Srb2win-vc10.vcxproj b/src/win32/Srb2win-vc10.vcxproj
index 064f75d7..0722c0b6 100644
--- a/src/win32/Srb2win-vc10.vcxproj
+++ b/src/win32/Srb2win-vc10.vcxproj
@@ -119,6 +119,7 @@
     <ClCompile Include="..\hardware\hw3sound.c" />
     <ClCompile Include="..\hardware\hw_bsp.c" />
     <ClCompile Include="..\hardware\hw_cache.c" />
+    <ClCompile Include="..\hardware\hw_clip.c" />
     <ClCompile Include="..\hardware\hw_draw.c" />
     <ClCompile Include="..\hardware\hw_light.c" />
     <ClCompile Include="..\hardware\hw_main.c" />
@@ -275,6 +276,7 @@
     <ClInclude Include="..\hardware\hw3dsdrv.h" />
     <ClInclude Include="..\hardware\hw3sound.h" />
     <ClInclude Include="..\hardware\hws_data.h" />
+    <ClInclude Include="..\hardware\hw_clip.h" />
     <ClInclude Include="..\hardware\hw_data.h" />
     <ClInclude Include="..\hardware\hw_defs.h" />
     <ClInclude Include="..\hardware\hw_dll.h" />
diff --git a/src/win32/Srb2win-vc10.vcxproj.filters b/src/win32/Srb2win-vc10.vcxproj.filters
index b2647ea1..95e79cab 100644
--- a/src/win32/Srb2win-vc10.vcxproj.filters
+++ b/src/win32/Srb2win-vc10.vcxproj.filters
@@ -93,6 +93,9 @@
     <ClCompile Include="..\hardware\hw_cache.c">
       <Filter>Hw_Hardware</Filter>
     </ClCompile>
+    <ClCompile Include="..\hardware\hw_clip.c">
+      <Filter>Hw_Hardware</Filter>
+    </ClCompile>
     <ClCompile Include="..\hardware\hw_draw.c">
       <Filter>Hw_Hardware</Filter>
     </ClCompile>
@@ -470,6 +473,9 @@
     <ClInclude Include="win_main.h">
       <Filter>Win32app</Filter>
     </ClInclude>
+    <ClInclude Include="..\hardware\hw_clip.h">
+      <Filter>Hw_Hardware</Filter>
+    </ClInclude>
     <ClInclude Include="..\hardware\hw_data.h">
       <Filter>Hw_Hardware</Filter>
     </ClInclude>
diff --git a/src/win32/win_dll.c b/src/win32/win_dll.c
index c9b3fba4..71eda043 100644
--- a/src/win32/win_dll.c
+++ b/src/win32/win_dll.c
@@ -148,7 +148,7 @@ static loadfunc_t hwdFuncTable[] = {
 #ifdef SHUFFLE
 	{"PostImgRedraw",       &hwdriver.pfnPostImgRedraw},
 #endif
-	{"FlushScreenTextures"},&hwdriver.pfnFlushScreenTextures},
+	{"FlushScreenTextures", &hwdriver.pfnFlushScreenTextures},
 	{"StartScreenWipe",     &hwdriver.pfnStartScreenWipe},
 	{"EndScreenWipe",       &hwdriver.pfnEndScreenWipe},
 	{"DoScreenWipe",        &hwdriver.pfnDoScreenWipe},
diff --git a/src/win32/win_snd.c b/src/win32/win_snd.c
index 1e1b062f..454c53e3 100644
--- a/src/win32/win_snd.c
+++ b/src/win32/win_snd.c
@@ -457,6 +457,8 @@ void I_ShutdownMusic(void)
 
 musictype_t I_SongType(void)
 {
+	FMOD_SOUND_TYPE type;
+
 #ifdef HAVE_LIBGME
 	if (gme)
 		return MU_GME;
@@ -465,7 +467,6 @@ musictype_t I_SongType(void)
 	if (!music_stream)
 		return MU_NONE;
 
-	FMOD_SOUND_TYPE type;
 	if (FMOD_Sound_GetFormat(music_stream, &type, NULL, NULL, NULL) == FMOD_OK)
 	{
 		switch(type)
@@ -492,15 +493,15 @@ musictype_t I_SongType(void)
 
 boolean I_SongPlaying(void)
 {
-	return (boolean)music_stream;
+	return (music_stream != NULL);
 }
 
 boolean I_SongPaused(void)
 {
-	boolean fmpaused = false;
+	FMOD_BOOL fmpaused = false;
 	if (music_stream)
 		FMOD_Channel_GetPaused(music_channel, &fmpaused);
-	return fmpaused;
+	return (boolean)fmpaused;
 }
 
 /// ------------------------
@@ -551,7 +552,12 @@ boolean I_LoadSong(char *data, size_t len)
 	FMOD_TAG tag;
 	unsigned int loopstart, loopend;
 
-	if (gme || music_stream)
+	if (
+#ifdef HAVE_LIBGME
+		gme ||
+#endif
+		music_stream
+	)
 		I_UnloadSong();
 
 	memset(&fmt, 0, sizeof(FMOD_CREATESOUNDEXINFO));