From: Dongwon Kim <dongwon.kim@intel.com>

Draw routine needs to be manually invoked in the next refresh
if there is a scanout blob from the guest. This is to prevent
a situation where there is a scheduled draw event but it won't
happen bacause the window is currently in inactive state
(minimized or tabified). If draw is not done for a long time,
gl_block timeout and/or fence timeout (on the guest) will happen
eventually.

v2: Use gd_gl_area_draw(vc) in gtk-gl-area.c

Suggested-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
---
 ui/gtk-egl.c     | 1 +
 ui/gtk-gl-area.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index 3af5ac5bcf..75f6b9011a 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -150,6 +150,7 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
             vc, vc->window ? vc->window : vc->gfx.drawing_area);
 
     if (vc->gfx.guest_fb.dmabuf && vc->gfx.guest_fb.dmabuf->draw_submitted) {
+        gd_egl_draw(vc);
         return;
     }
 
diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
index 52dcac161e..4fff957c3f 100644
--- a/ui/gtk-gl-area.c
+++ b/ui/gtk-gl-area.c
@@ -126,6 +126,7 @@ void gd_gl_area_refresh(DisplayChangeListener *dcl)
     gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
 
     if (vc->gfx.guest_fb.dmabuf && vc->gfx.guest_fb.dmabuf->draw_submitted) {
+        gd_gl_area_draw(vc);
         return;
     }
 
-- 
2.34.1

On Sat, Apr 27, 2024 at 2:56 AM <dongwon.kim@intel.com> wrote:
>
> From: Dongwon Kim <dongwon.kim@intel.com>
>
> Draw routine needs to be manually invoked in the next refresh
> if there is a scanout blob from the guest. This is to prevent
> a situation where there is a scheduled draw event but it won't
> happen bacause the window is currently in inactive state
> (minimized or tabified). If draw is not done for a long time,
> gl_block timeout and/or fence timeout (on the guest) will happen
> eventually.
>
> v2: Use gd_gl_area_draw(vc) in gtk-gl-area.c
>
> Suggested-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
> Cc: Daniel P. Berrangé <berrange@redhat.com>
> Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>

Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>

> ---
>  ui/gtk-egl.c     | 1 +
>  ui/gtk-gl-area.c | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
> index 3af5ac5bcf..75f6b9011a 100644
> --- a/ui/gtk-egl.c
> +++ b/ui/gtk-egl.c
> @@ -150,6 +150,7 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
>              vc, vc->window ? vc->window : vc->gfx.drawing_area);
>
>      if (vc->gfx.guest_fb.dmabuf && vc->gfx.guest_fb.dmabuf->draw_submitted) {
> +        gd_egl_draw(vc);
>          return;
>      }
>
> diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
> index 52dcac161e..4fff957c3f 100644
> --- a/ui/gtk-gl-area.c
> +++ b/ui/gtk-gl-area.c
> @@ -126,6 +126,7 @@ void gd_gl_area_refresh(DisplayChangeListener *dcl)
>      gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
>
>      if (vc->gfx.guest_fb.dmabuf && vc->gfx.guest_fb.dmabuf->draw_submitted) {
> +        gd_gl_area_draw(vc);
>          return;
>      }
>
> --
> 2.34.1
>
>


-- 
Marc-André Lureau