Re: [PATCH] qemu/ui: set swap interval explicitly when OpenGL is enabled

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

On 11/9/24 11:14, gert.wollny@collabora.com wrote:
> From: Gert Wollny <gert.wollny@collabora.com>
> 
> Before 176e3783f2ab (ui/sdl2: OpenGL window context)
> SDL_CreateRenderer was called unconditionally setting
> the swap interval to 0. Since SDL_CreateRenderer is now no
> longer called when OpenGL is enabled, the swap interval is
> no longer set explicitly and vsync handling depends on
> the environment settings which may lead to a performance
> regression with virgl as reported in
>     https://gitlab.com/qemu-project/qemu/-/issues/2565
> 
> Restore the old vsync handling by explicitly calling
> SDL_GL_SetSwapInterval if OpenGL is enabled.
> 
> Fixes: 176e3783f2ab (ui/sdl2: OpenGL window context)
> Closes: https://gitlab.com/qemu-project/qemu/-/issues/2565
> 
> Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
> ---
>   ui/sdl2.c | 1 +
>   1 file changed, 1 insertion(+)

Queued, thanks.