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Do not rely on GL_UNPACK_SKIP_* attributes, as not all OpenGL drivers

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support them right (Bug #914) - Michael


git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@2647 8092fc87-c524-0410-9efc-e669fe64eaf9
This commit is contained in:
mcmartin
2007-01-09 00:58:29 +00:00
parent 83915976bd
commit 85b0e97626
2 changed files with 14 additions and 6 deletions
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sc2/ChangeLog
+2
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@@ -1,4 +1,6 @@
Changes towards version 0.7:
- Do not rely on GL_UNPACK_SKIP_* arguments, which some OpenGL drivers
mishandle (Bug #914) - Michael
- Do not overwrite GLOBAL_SIS (CrewEnlisted) when leaving Hyperspace
(Bug #938) - Michael
- Fixed a text entry width problem that was deleting control template
sc2/src/sc2code/libs/graphics/sdl/opengl.c
+12 -6
View File
@@ -341,23 +341,29 @@ TFB_GL_SwapBuffers (int force_full_redraw)
scaler (SDL_Screen, scaled_display, &updated);
glPixelStorei (GL_UNPACK_ROW_LENGTH, ScreenWidth * 2);
glPixelStorei (GL_UNPACK_SKIP_ROWS, updated.y * 2);
glPixelStorei (GL_UNPACK_SKIP_PIXELS, updated.x * 2);
/* Matrox OpenGL drivers do not handle GL_UNPACK_SKIP_*
correctly */
glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
SDL_LockSurface (scaled_display);
glTexSubImage2D (GL_TEXTURE_2D, 0, updated.x * 2, updated.y * 2,
updated.w * 2, updated.h * 2, GL_RGBA, GL_UNSIGNED_BYTE,
scaled_display->pixels);
scaled_display->pixels +
(updated.y * 16 * ScreenWidth + updated.x * 8));
SDL_UnlockSurface (scaled_display);
}
else
{
glPixelStorei (GL_UNPACK_ROW_LENGTH, ScreenWidth);
glPixelStorei (GL_UNPACK_SKIP_ROWS, updated.y);
glPixelStorei (GL_UNPACK_SKIP_PIXELS, updated.x);
/* Matrox OpenGL drivers do not handle GL_UNPACK_SKIP_*
correctly */
glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
SDL_LockSurface (SDL_Screen);
glTexSubImage2D (GL_TEXTURE_2D, 0, updated.x, updated.y,
updated.w, updated.h, GL_RGBA, GL_UNSIGNED_BYTE,
SDL_Screen->pixels);
SDL_Screen->pixels +
(updated.y * 4 * ScreenWidth + updated.x * 4));
SDL_UnlockSurface (SDL_Screen);
}
}