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Merge branch 'opengl-screenshot-fix' into 'master'

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Fix for screenshots taken in OpenGL with resolution 1366x768

Fix for this bug: https://mb.srb2.org/showthread.php?t=39882 (also reported here: https://mb.srb2.org/showthread.php?p=793077#10)

This is basically porting GZDoom's own fix for the same issue (I stumbled on a Zandronum thread about the same issue from google images, and one user mentioned GZDoom had fixed it): d31a0b77fd

See merge request !192
This commit is contained in:
Monster Iestyn 2017-06-04 17:20:40 -04:00
commit 32e6bfeaab
2 changed files with 17 additions and 36 deletions
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51
src/hardware/r_opengl/r_opengl.c
View file

@ -244,6 +244,7 @@ FUNCPRINTF void DBG_Printf(const char *lpFmt, ...)
#define pglMaterialfv glMaterialfv
/* Raster functions */
#define pglPixelStorei glPixelStorei
#define pglReadPixels glReadPixels
/* Texture mapping */
@ -262,15 +263,8 @@ FUNCPRINTF void DBG_Printf(const char *lpFmt, ...)
/* texture mapping */ //GL_EXT_copy_texture
#ifndef KOS_GL_COMPATIBILITY
#define pglCopyTexImage2D glCopyTexImage2D
#endif
/* GLU functions */
#define pgluBuild2DMipmaps gluBuild2DMipmaps
#endif
#ifndef MINI_GL_COMPATIBILITY
/* 1.3 functions for multitexturing */
#define pglActiveTexture glActiveTexture
#define pglMultiTexCoord2f glMultiTexCoord2f
#endif
#else //!STATIC_OPENGL
/* 1.0 functions */
@ -365,6 +359,8 @@ 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;
@ -391,7 +387,7 @@ static PFNglBindTexture pglBindTexture;
/* texture mapping */ //GL_EXT_copy_texture
typedef void (APIENTRY * PFNglCopyTexImage2D) (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
static PFNglCopyTexImage2D pglCopyTexImage2D;
#endif
/* GLU functions */
typedef GLint (APIENTRY * PFNgluBuild2DMipmaps) (GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *data);
static PFNgluBuild2DMipmaps pgluBuild2DMipmaps;
@ -403,7 +399,6 @@ static PFNglActiveTexture pglActiveTexture;
typedef void (APIENTRY *PFNglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
static PFNglMultiTexCoord2f pglMultiTexCoord2f;
#endif
#endif
#ifndef MINI_GL_COMPATIBILITY
/* 1.2 Parms */
@ -494,6 +489,7 @@ boolean SetupGLfunc(void)
GETOPENGLFUNC(pglLightModelfv , glLightModelfv)
GETOPENGLFUNC(pglMaterialfv , glMaterialfv)
GETOPENGLFUNC(pglPixelStorei , glPixelStorei)
GETOPENGLFUNC(pglReadPixels , glReadPixels)
GETOPENGLFUNC(pglTexEnvi , glTexEnvi)
@ -519,35 +515,23 @@ boolean SetupGLfunc(void)
// This has to be done after the context is created so the version number can be obtained
boolean SetupGLFunc13(void)
{
#ifdef MINI_GL_COMPATIBILITY
return false;
#else
const GLubyte *version = pglGetString(GL_VERSION);
int glmajor, glminor;
gl13 = false;
#ifdef MINI_GL_COMPATIBILITY
return false;
#else
#ifdef STATIC_OPENGL
gl13 = true;
#else
// Parse the GL version
if (version != NULL)
{
if (sscanf((const char*)version, "%d.%d", &glmajor, &glminor) == 2)
{
// Look, we gotta prepare for the inevitable arrival of GL 2.0 code...
switch (glmajor)
{
case 1:
if (glminor == 3) gl13 = true;
break;
case 2:
case 3:
case 4:
gl13 = true;
default:
break;
}
if (glmajor == 1 && glminor >= 3)
gl13 = true;
else if (glmajor > 1)
gl13 = true;
}
}
@ -568,9 +552,6 @@ boolean SetupGLFunc13(void)
}
else
DBG_Printf("GL_ARB_multitexture support: disabled\n");
#undef GETOPENGLFUNC
#endif
return true;
#endif
}
@ -897,7 +878,9 @@ 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 +896,9 @@ 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++)
@ -1815,13 +1800,11 @@ EXPORT void HWRAPI(SetSpecialState) (hwdspecialstate_t IdState, INT32 Value)
min_filter = GL_NEAREST;
#endif
}
#ifndef STATIC_OPENGL
if (!pgluBuild2DMipmaps)
{
MipMap = GL_FALSE;
min_filter = GL_LINEAR;
}
#endif
Flush(); //??? if we want to change filter mode by texture, remove this
break;

2
src/sdl/ogl_sdl.c
View file

@ -71,7 +71,6 @@ INT32 oglflags = 0;
void *GLUhandle = NULL;
SDL_GLContext sdlglcontext = 0;
#ifndef STATIC_OPENGL
void *GetGLFunc(const char *proc)
{
if (strncmp(proc, "glu", 3) == 0)
@ -83,7 +82,6 @@ void *GetGLFunc(const char *proc)
}
return SDL_GL_GetProcAddress(proc);
}
#endif
boolean LoadGL(void)
{