From ccf6049e3931b27e022b88b7166a0395021fcda3 Mon Sep 17 00:00:00 2001
From: Matt Borgerson <contact@mborgerson.com>
Date: Wed, 16 Jun 2021 20:17:22 -0700
Subject: [PATCH] ui: Ensure glFinish before swap

---
 ui/xemu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ui/xemu.c b/ui/xemu.c
index 021b7b73f5..a93ddf10a1 100644
--- a/ui/xemu.c
+++ b/ui/xemu.c
@@ -1186,6 +1186,7 @@ void sdl2_gl_refresh(DisplayChangeListener *dcl)
     qemu_mutex_unlock_iothread();
     qemu_mutex_unlock_main_loop();
 
+    glFinish();
     SDL_GL_SwapWindow(scon->real_window);
 
     /* VGA update (see note above) + vblank */