sandbox: Use hinting with the display

SDL provides a hinting feature which provides a higher-quality image
with the double-display option (-K). Enable it.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/sandbox/cpu/sdl.c b/arch/sandbox/cpu/sdl.c
index e264949..bef5abd 100644 (file)
--- a/arch/sandbox/cpu/sdl.c
+++ b/arch/sandbox/cpu/sdl.c
@@ -123,6 +123,9 @@ int sandbox_sdl_init_display(int width, int height, int log2_bpp,
                sdl.vis_height = sdl.height;
        }
 
+       if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1"))
+               printf("Unable to init hinting: %s", SDL_GetError());
+
        sdl.depth = 1 << log2_bpp;
        sdl.pitch = sdl.width * sdl.depth / 8;
        SDL_Window *screen = SDL_CreateWindow("U-Boot", SDL_WINDOWPOS_UNDEFINED,