[PULL 07/19] ui/gtk: skip refresh if new dmabuf has been submitted

[marcandre . lureau]

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

Skip refresh if a new dmabuf (guest scanout frame) has already been
submitted and ready to be drawn because the scanout will be updated
with new frame anyway.

Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Marc-André Lureau <marcandre.lur...@redhat.com>
Cc: Vivek Kasireddy <vivek.kasire...@intel.com>
Signed-off-by: Dongwon Kim <dongwon....@intel.com>
Acked-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Message-ID: <20230706183355.29361-2-dongwon....@intel.com>
---
 ui/gtk-egl.c     | 4 ++++
 ui/gtk-gl-area.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index 98b3a116bf..4c29ac10d0 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -148,6 +148,10 @@ void gd_egl_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) {
+        return;
+    }
+
     if (!vc->gfx.esurface) {
         gd_egl_init(vc);
         if (!vc->gfx.esurface) {
diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
index 28d9e49888..1ce34a249e 100644
--- a/ui/gtk-gl-area.c
+++ b/ui/gtk-gl-area.c
@@ -125,6 +125,10 @@ 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) {
+        return;
+    }
+
     if (!vc->gfx.gls) {
         if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
             return;
-- 
2.41.0