ui/gtk-egl: Ensure EGL surface is available before drawing

The EGL surface and context are destroyed when a new GTK window is
created. We must ensure these are recreated and initialized before
any rendering happens in gd_egl_refresh.

Currently, the check for a pending draw is performed before the
surface initialization block. This can result in an attempt to
draw when the EGL surface (vc->gfx.esurface) is not yet available.

This patch moves the drawing check after the surface initialization
to ensure a valid surface exists before rendering in gd_egl_refresh.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20260303011151.1925827-1-dongwon.kim@intel.com>

diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index 1b5c1d4533c0e9cfbf5eb1b9ce4c2b5272303686..fa8fe8970c1801f9af24052e57eeedb2ba6c144a 100644 (file)
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -152,12 +152,6 @@ 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 &&
-        qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
-        gd_egl_draw(vc);
-        return;
-    }
-
     if (!vc->gfx.esurface) {
         gd_egl_init(vc);
         if (!vc->gfx.esurface) {
@@ -176,6 +170,12 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
 #endif
     }
 
+    if (vc->gfx.guest_fb.dmabuf &&
+        qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
+        gd_egl_draw(vc);
+        return;
+    }
+
     graphic_hw_update(dcl->con);
 
     if (vc->gfx.glupdates) {