portal: damage buffer before committing

src/portal/ptr_gui.rs

@@ -661,6 +661,7 @@ impl WindowData {
         buf.free.set(false);
 
         self.surface.attach(&buf.wl);
+        self.surface.damage();
         self.surface.commit();
     }
 

src/wl_usr/usr_ifs/usr_wl_surface.rs

@@ -27,6 +27,16 @@ impl UsrWlSurface {
         });
     }
 
+    pub fn damage(&self) {
+        self.con.request(DamageBuffer {
+            self_id: self.id,
+            x: 0,
+            y: 0,
+            width: i32::MAX,
+            height: i32::MAX,
+        });
+    }
+
     pub fn frame<F>(&self, f: F)
     where
         F: FnOnce() + 'static,