pandory500/SDL-mirror
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

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

Browse source 
--HG--
branch : SDL-ryan-batching-renderer
This commit is contained in:
Ryan C. Gordon 2018-10-22 20:50:32 -04:00
parent 1c7254cb58
commit 637cfa5d6b
19 changed files with 84 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/render/opengl/SDL_render_gl.c
View file

@ -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,