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Fix screenshots taken in OpenGL with 1366x768 being messed up

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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++)