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Draw a dark square when no texture is rendered

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Draw a dark 10x10 square in the top-right corner to distinguish a black
frame from the absence of a frame (useful for debugging).
This commit is contained in:
Romain Vimont 2026-02-25 23:20:55 +01:00
parent f2de2c88ff
commit 13039e8db5
1 changed files with 12 additions and 0 deletions
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12
app/src/screen.c
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@ -205,11 +205,23 @@ sc_screen_render(struct sc_screen *screen, bool update_content_rect) {
}
SDL_Renderer *renderer = screen->renderer;
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
sc_sdl_render_clear(renderer);
bool ok = false;
SDL_Texture *texture = screen->tex.texture;
if (!texture) {
// Draw a dark 10x10 square in the top-right corner to distinguish a
// black frame from the absence of a frame
struct sc_size render_size = sc_sdl_get_render_output_size(renderer);
SDL_SetRenderDrawColor(renderer, 0, 0, 0x33, 0xff);
SDL_FRect rect = {
.x = render_size.width - 20,
.y = 10,
.w = 10,
.h = 10,
};
SDL_RenderFillRect(renderer, &rect);
goto end;
}