Without that, window effects in KWin get suspended as soon as any
qemu-sdl window becomes visible. While the SDL default makes sense
for games, it's not really suitable for QEMU.

Signed-off-by: Sebastian Krzyszkowiak <d...@dosowisko.net>
---
 ui/sdl2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 2696b95c79..a10b6e3a08 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -786,6 +786,9 @@ static void sdl2_display_init(DisplayState *ds, 
DisplayOptions *o)
                 SDL_GetError());
         exit(1);
     }
+#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 
2.0.8 */
+    SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
+#endif
     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
     memset(&info, 0, sizeof(info));
     SDL_VERSION(&info.version);
-- 
2.19.1


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