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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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12
test/testrendertarget.c
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@@ -54,11 +54,11 @@ DrawComposite(DrawState *s)
SDL_Rect viewport;
SDL_FRect R;
SDL_Texture *target;
SDL_Surface *surface;
static SDL_bool blend_tested = SDL_FALSE;
if (!blend_tested) {
SDL_Texture *A, *B;
Uint32 P;
A = SDL_CreateTexture(s->renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET, 1, 1);
SDL_SetTextureBlendMode(A, SDL_BLENDMODE_BLEND);
@@ -74,9 +74,15 @@ DrawComposite(DrawState *s)
SDL_SetRenderDrawColor(s->renderer, 0x00, 0x00, 0x00, 0x00);
SDL_RenderFillRect(s->renderer, NULL);
SDL_RenderTexture(s->renderer, A, NULL, NULL);
SDL_RenderReadPixels(s->renderer, NULL, SDL_PIXELFORMAT_ARGB8888, &P, sizeof(P));
SDL_Log("Blended pixel: 0x%8.8" SDL_PRIX32 "\n", P);
surface = SDL_RenderReadPixels(s->renderer, NULL);
if (surface) {
Uint8 r, g, b, a;
if (SDL_ReadSurfacePixel(surface, 0, 0, &r, &g, &b, &a) == 0) {
SDL_Log("Blended pixel: 0x%.2x%.2x%.2x%.2x\n", r, g, b, a);
}
SDL_DestroySurface(surface);
}
SDL_DestroyTexture(A);
SDL_DestroyTexture(B);