From 350b1d3b6830bf7383b7df051521526eb2c0d8c4 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Mon, 5 Jul 2021 16:32:47 -0600
Subject: [PATCH] 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>
---
 arch/sandbox/cpu/sdl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/sandbox/cpu/sdl.c b/arch/sandbox/cpu/sdl.c
index e264949481..bef5abd039 100644
--- 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,
-- 
2.39.5