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SRB2/src/sdl/ogl_sdl.c

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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright (C) 1998-2000 by DooM Legacy Team.
//
// 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.
//
//-----------------------------------------------------------------------------
/// \file
/// \brief SDL specific part of the OpenGL API for SRB2
#ifdef _MSC_VER
#pragma warning(disable : 4214 4244)
#endif
#ifdef HAVE_SDL
#include "SDL.h"
#ifdef _MSC_VER
#pragma warning(default : 4214 4244)
#endif
#include "../doomdef.h"
#ifdef HWRENDER
#include "../hardware/r_opengl/r_opengl.h"
#include "ogl_sdl.h"
#include "../i_system.h"
#include "hwsym_sdl.h"
#include "../m_argv.h"
#ifdef DEBUG_TO_FILE
#include <stdarg.h>
#if defined (_WIN32) && !defined (__CYGWIN__)
#include <direct.h>
#else
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#endif
#ifdef USE_WGL_SWAP
PFNWGLEXTSWAPCONTROLPROC wglSwapIntervalEXT = NULL;
#else
typedef int (*PFNGLXSWAPINTERVALPROC) (int);
PFNGLXSWAPINTERVALPROC glXSwapIntervalSGIEXT = NULL;
#endif
#ifndef STATIC_OPENGL
PFNglClear pglClear;
PFNglGetIntegerv pglGetIntegerv;
PFNglGetString pglGetString;
#endif
#ifdef _PSP
static const Uint32 WOGLFlags = SDL_HWSURFACE|SDL_OPENGL/*|SDL_RESIZABLE*/;
static const Uint32 FOGLFlags = SDL_HWSURFACE|SDL_OPENGL|SDL_FULLSCREEN;
#else
static const Uint32 WOGLFlags = SDL_OPENGL/*|SDL_RESIZABLE*/;
static const Uint32 FOGLFlags = SDL_OPENGL|SDL_FULLSCREEN;
#endif
/** \brief SDL video display surface
*/
SDL_Surface *vidSurface = NULL;
INT32 oglflags = 0;
void *GLUhandle = NULL;
#ifndef STATIC_OPENGL
void *GetGLFunc(const char *proc)
{
if (strncmp(proc, "glu", 3) == 0)
{
if (GLUhandle)
return hwSym(proc, GLUhandle);
else
return NULL;
}
return SDL_GL_GetProcAddress(proc);
}
#endif
boolean LoadGL(void)
{
#ifndef STATIC_OPENGL
const char *OGLLibname = NULL;
const char *GLULibname = NULL;
if (M_CheckParm ("-OGLlib") && M_IsNextParm())
OGLLibname = M_GetNextParm();
if (SDL_GL_LoadLibrary(OGLLibname) != 0)
{
I_OutputMsg("Could not load OpenGL Library: %s\n"
"Falling back to Software mode.\n", SDL_GetError());
if (!M_CheckParm ("-OGLlib"))
I_OutputMsg("If you know what is the OpenGL library's name, use -OGLlib\n");
return 0;
}
#if 0
GLULibname = "/proc/self/exe";
#elif defined (_WIN32)
GLULibname = "GLU32.DLL";
#elif defined (__MACH__)
GLULibname = "/System/Library/Frameworks/OpenGL.framework/Libraries/libGLU.dylib";
#elif defined (macintos)
GLULibname = "OpenGLLibrary";
#elif defined (__unix__)
GLULibname = "libGLU.so.1";
#elif defined (__HAIKU__)
GLULibname = "libGLU.so";
#else
GLULibname = NULL;
#endif
if (M_CheckParm ("-GLUlib") && M_IsNextParm())
GLULibname = M_GetNextParm();
if (GLULibname)
{
GLUhandle = hwOpen(GLULibname);
if (GLUhandle)
return SetupGLfunc();
else
{
I_OutputMsg("Could not load GLU Library: %s\n", GLULibname);
if (!M_CheckParm ("-GLUlib"))
I_OutputMsg("If you know what is the GLU library's name, use -GLUlib\n");
}
}
else
{
I_OutputMsg("Could not load GLU Library\n");
I_OutputMsg("If you know what is the GLU library's name, use -GLUlib\n");
}
#endif
return SetupGLfunc();
}
/** \brief The OglSdlSurface function
\param w width
\param h height
\param isFullscreen if true, go fullscreen
\return if true, changed video mode
*/
boolean OglSdlSurface(INT32 w, INT32 h, boolean isFullscreen)
{
INT32 cbpp;
Uint32 OGLFlags;
const GLvoid *glvendor = NULL, *glrenderer = NULL, *glversion = NULL;
cbpp = cv_scr_depth.value < 16 ? 16 : cv_scr_depth.value;
if (vidSurface)
{
//Alam: SDL_Video system free vidSurface for me
#ifdef VOODOOSAFESWITCHING
SDL_QuitSubSystem(SDL_INIT_VIDEO);
SDL_InitSubSystem(SDL_INIT_VIDEO);
#endif
}
if (isFullscreen)
OGLFlags = FOGLFlags;
else
OGLFlags = WOGLFlags;
cbpp = SDL_VideoModeOK(w, h, cbpp, OGLFlags);
if (cbpp < 16)
return true; //Alam: Let just say we did, ok?
vidSurface = SDL_SetVideoMode(w, h, cbpp, OGLFlags);
if (!vidSurface)
return false;
glvendor = pglGetString(GL_VENDOR);
// Get info and extensions.
//BP: why don't we make it earlier ?
//Hurdler: we cannot do that before intialising gl context
glrenderer = pglGetString(GL_RENDERER);
glversion = pglGetString(GL_VERSION);
gl_extensions = pglGetString(GL_EXTENSIONS);
DBG_Printf("Vendor : %s\n", glvendor);
DBG_Printf("Renderer : %s\n", glrenderer);
DBG_Printf("Version : %s\n", glversion);
DBG_Printf("Extensions : %s\n", gl_extensions);
oglflags = 0;
#ifdef _WIN32
// BP: disable advenced feature that don't work on somes hardware
// Hurdler: Now works on G400 with bios 1.6 and certified drivers 6.04
if (strstr(glrenderer, "810")) oglflags |= GLF_NOZBUFREAD;
#elif defined (unix) || defined (UNIXCOMMON)
// disable advanced features not working on somes hardware
if (strstr(glrenderer, "G200")) oglflags |= GLF_NOTEXENV;
if (strstr(glrenderer, "G400")) oglflags |= GLF_NOTEXENV;
#endif
DBG_Printf("oglflags : 0x%X\n", oglflags );
#ifdef USE_PALETTED_TEXTURE
if (isExtAvailable("GL_EXT_paletted_texture", gl_extensions))
glColorTableEXT = SDL_GL_GetProcAddress("glColorTableEXT");
else
glColorTableEXT = NULL;
#endif
#ifdef USE_WGL_SWAP
if (isExtAvailable("WGL_EXT_swap_control", gl_extensions))
wglSwapIntervalEXT = SDL_GL_GetProcAddress("wglSwapIntervalEXT");
else
wglSwapIntervalEXT = NULL;
#else
if (isExtAvailable("GLX_SGI_swap_control", gl_extensions))
glXSwapIntervalSGIEXT = SDL_GL_GetProcAddress("glXSwapIntervalSGI");
else
glXSwapIntervalSGIEXT = NULL;
#endif
#ifndef KOS_GL_COMPATIBILITY
if (isExtAvailable("GL_EXT_texture_filter_anisotropic", gl_extensions))
pglGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maximumAnisotropy);
else
#endif
maximumAnisotropy = 0;
granisotropicmode_cons_t[1].value = maximumAnisotropy;
SetModelView(w, h);
SetStates();
pglClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
HWR_Startup();
#ifdef KOS_GL_COMPATIBILITY
textureformatGL = GL_ARGB4444;
#else
textureformatGL = cbpp > 16 ? GL_RGBA : GL_RGB5_A1;
#endif
return true;
}
/** \brief The OglSdlFinishUpdate function
\param vidwait wait for video sync
\return void
*/
void OglSdlFinishUpdate(boolean waitvbl)
{
static boolean oldwaitvbl = false;
if (oldwaitvbl != waitvbl)
{
#ifdef USE_WGL_SWAP
if (wglSwapIntervalEXT)
wglSwapIntervalEXT(waitvbl);
#else
if (glXSwapIntervalSGIEXT)
glXSwapIntervalSGIEXT(waitvbl);
#endif
}
oldwaitvbl = waitvbl;
SDL_GL_SwapBuffers();
}
EXPORT void HWRAPI( OglSdlSetPalette) (RGBA_t *palette, RGBA_t *pgamma)
{
INT32 i = -1;
UINT32 redgamma = pgamma->s.red, greengamma = pgamma->s.green,
bluegamma = pgamma->s.blue;
#if 0 // changing the gamma to 127 is a bad idea
i = SDL_SetGamma(byteasfloat(redgamma), byteasfloat(greengamma), byteasfloat(bluegamma));
#endif
if (i == 0) redgamma = greengamma = bluegamma = 0x7F; //Alam: cool
for (i = 0; i < 256; i++)
{
myPaletteData[i].s.red = (UINT8)MIN((palette[i].s.red * redgamma) /127, 255);
myPaletteData[i].s.green = (UINT8)MIN((palette[i].s.green * greengamma)/127, 255);
myPaletteData[i].s.blue = (UINT8)MIN((palette[i].s.blue * bluegamma) /127, 255);
myPaletteData[i].s.alpha = palette[i].s.alpha;
}
#ifdef USE_PALETTED_TEXTURE
if (glColorTableEXT)
{
for (i = 0; i < 256; i++)
{
palette_tex[(3*i)+0] = palette[i].s.red;
palette_tex[(3*i)+1] = palette[i].s.green;
palette_tex[(3*i)+2] = palette[i].s.blue;
}
glColorTableEXT(GL_TEXTURE_2D, GL_RGB8, 256, GL_RGB, GL_UNSIGNED_BYTE, palette_tex);
}
#endif
// on a chang<6E>de palette, il faut recharger toutes les textures
// jaja, und noch viel mehr ;-)
Flush();
}
#endif //HWRENDER
#endif //SDL
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