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Fix screenshots taken in OpenGL with 1366x768 being messed up 

This is based on GZDoom's own fix for the same issue, had to add support for glPixelStorei first though
This commit is contained in:
Monster Iestyn 2017-05-29 21:28:36 +01:00
parent 2223283208
commit f96844b262
1 changed files with 8 additions and 0 deletions
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8
src/hardware/r_opengl/r_opengl.c
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@ -244,6 +244,7 @@ FUNCPRINTF void DBG_Printf(const char *lpFmt, ...)
#define pglMaterialfv glMaterialfv
/* Raster functions */
#define pglPixelStorei glPixelStorei
#define pglReadPixels glReadPixels
/* Texture mapping */
@ -365,6 +366,8 @@ typedef void (APIENTRY * PFNglMaterialfv) (GLint face, GLenum pname, GLfloat *pa
static PFNglMaterialfv pglMaterialfv;
/* Raster functions */
typedef void (APIENTRY * PFNglPixelStorei) (GLenum pname, GLint param);
static PFNglPixelStorei pglPixelStorei;
typedef void (APIENTRY * PFNglReadPixels) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
static PFNglReadPixels pglReadPixels;
@ -494,6 +497,7 @@ boolean SetupGLfunc(void)
GETOPENGLFUNC(pglLightModelfv , glLightModelfv)
GETOPENGLFUNC(pglMaterialfv , glMaterialfv)
GETOPENGLFUNC(pglPixelStorei , glPixelStorei)
GETOPENGLFUNC(pglReadPixels , glReadPixels)
GETOPENGLFUNC(pglTexEnvi , glTexEnvi)
@ -897,7 +901,9 @@ EXPORT void HWRAPI(ReadRect) (INT32 x, INT32 y, INT32 width, INT32 height,
GLubyte*top = (GLvoid*)dst_data, *bottom = top + dst_stride * (height - 1);
GLubyte *row = malloc(dst_stride);
if (!row) return;
pglPixelStorei(GL_PACK_ALIGNMENT, 1);
pglReadPixels(x, y, width, height, GL_RGB, GL_UNSIGNED_BYTE, dst_data);
pglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
for(i = 0; i < height/2; i++)
{
memcpy(row, top, dst_stride);
@ -913,7 +919,9 @@ EXPORT void HWRAPI(ReadRect) (INT32 x, INT32 y, INT32 width, INT32 height,
INT32 j;
GLubyte *image = malloc(width*height*3*sizeof (*image));
if (!image) return;
pglPixelStorei(GL_PACK_ALIGNMENT, 1);
pglReadPixels(x, y, width, height, GL_RGB, GL_UNSIGNED_BYTE, image);
pglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
for (i = height-1; i >= 0; i--)
{
for (j = 0; j < width; j++)