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Small stack allocations fall back to malloc if they're unexpectedly large.

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This commit is contained in:
Ryan C. Gordon 2018-10-22 20:50:32 -04:00
parent eedf2c965d
commit b262b0ebc9
19 changed files with 84 additions and 52 deletions
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5
src/render/opengl/SDL_render_gl.c
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@ -1348,10 +1348,11 @@ GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
/* Flip the rows to be top-down if necessary */
if (!renderer->target) {
SDL_bool isstack;
length = rect->w * SDL_BYTESPERPIXEL(temp_format);
src = (Uint8*)temp_pixels + (rect->h-1)*temp_pitch;
dst = (Uint8*)temp_pixels;
tmp = SDL_stack_alloc(Uint8, length);
tmp = SDL_small_alloc(Uint8, length, &isstack);
rows = rect->h / 2;
while (rows--) {
SDL_memcpy(tmp, dst, length);
@ -1360,7 +1361,7 @@ GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
dst += temp_pitch;
src -= temp_pitch;
}
SDL_stack_free(tmp);
SDL_small_free(tmp, isstack);
}
status = SDL_ConvertPixels(rect->w, rect->h,