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We don't currently support blitting to < 8 bpp surfaces, return an error instead of corrupting memory in that case.

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This commit is contained in:
Sam Lantinga 2016-12-31 18:11:19 -08:00
parent 2ba66d0525
commit 49225f5f04
1 changed files with 6 additions and 0 deletions
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6
src/video/SDL_blit.c
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@ -219,6 +219,12 @@ SDL_CalculateBlit(SDL_Surface * surface)
SDL_BlitMap *map = surface->map;
SDL_Surface *dst = map->dst;
/* We don't currently support blitting to < 8 bpp surfaces */
if (dst->format->BitsPerPixel < 8) {
SDL_InvalidateMap(map);
return SDL_SetError("Blit combination not supported");
}
/* Clean everything out to start */
if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
SDL_UnRLESurface(surface, 1);