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SDL_RenderReadPixels() now returns a surface

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Fixes https://github.com/libsdl-org/SDL/issues/8977
This commit is contained in:
Sam Lantinga 2024-02-03 10:18:12 -08:00
parent ab571633d1
commit 89b9d6cbdc
22 changed files with 216 additions and 310 deletions
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27
src/render/SDL_render.c
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@ -4134,43 +4134,28 @@ int SDL_RenderGeometryRaw(SDL_Renderer *renderer,
return retval;
}
int SDL_RenderReadPixels(SDL_Renderer *renderer, const SDL_Rect *rect, Uint32 format, void *pixels, int pitch)
SDL_Surface *SDL_RenderReadPixels(SDL_Renderer *renderer, const SDL_Rect *rect)
{
SDL_Rect real_rect;
CHECK_RENDERER_MAGIC(renderer, -1);
CHECK_RENDERER_MAGIC(renderer, NULL);
if (!renderer->RenderReadPixels) {
return SDL_Unsupported();
SDL_Unsupported();
return NULL;
}
FlushRenderCommands(renderer); /* we need to render before we read the results. */
if (!format) {
if (!renderer->target) {
format = SDL_GetWindowPixelFormat(renderer->window);
} else {
format = renderer->target->format;
}
}
GetRenderViewportInPixels(renderer, &real_rect);
if (rect) {
if (!SDL_GetRectIntersection(rect, &real_rect, &real_rect)) {
return 0;
}
if (real_rect.y > rect->y) {
pixels = (Uint8 *)pixels + pitch * (real_rect.y - rect->y);
}
if (real_rect.x > rect->x) {
int bpp = SDL_BYTESPERPIXEL(format);
pixels = (Uint8 *)pixels + bpp * (real_rect.x - rect->x);
return NULL;
}
}
return renderer->RenderReadPixels(renderer, &real_rect,
format, pixels, pitch);
return renderer->RenderReadPixels(renderer, &real_rect);
}
static void SDL_SimulateRenderVSync(SDL_Renderer *renderer)