Commit fcb7e310 authored by Simon Glass's avatar Simon Glass
Browse files

sandbox: Add work-around for SDL2 display

At present the display does not show on some machines, e.g. Ubunutu
20.04 but the reason is unknown. Add a work-around until this can be

Also include more error checking just in case.
Signed-off-by: Simon Glass's avatarSimon Glass <>
parent f178bebf
......@@ -164,8 +164,29 @@ int sandbox_sdl_init_display(int width, int height, int log2_bpp,
int sandbox_sdl_sync(void *lcd_base)
struct SDL_Rect rect;
int ret;
if (!sdl.texture)
return 0;
SDL_UpdateTexture(sdl.texture, NULL, lcd_base, sdl.pitch);
SDL_RenderCopy(sdl.renderer, sdl.texture, NULL, NULL);
ret = SDL_RenderCopy(sdl.renderer, sdl.texture, NULL, NULL);
if (ret) {
printf("SDL copy %d: %s\n", ret, SDL_GetError());
return -EIO;
* On some machines this does not appear. Draw an empty rectangle which
* seems to fix that.
rect.x = 0;
rect.y = 0;
rect.w = 0;
rect.h = 0;
SDL_RenderDrawRect(sdl.renderer, &rect);
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment