From 5298d1c8d078a4aa10aa261d5eb5350178eee1ee Mon Sep 17 00:00:00 2001
From: Adel Gadllah <adel.gadllah@gmail.com>
Date: Wed, 6 Feb 2013 18:04:09 +0100
Subject: [PATCH] meta-window-actor: Don't do check_needs_reshape when not
 mapped

This can cause us ending up with a wrong mask because we don't yet
have a pixmap to use in build_and_scan_frame_mask().

https://bugzilla.gnome.org/show_bug.cgi?id=679901
---
 src/compositor/meta-window-actor.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compositor/meta-window-actor.c b/src/compositor/meta-window-actor.c
index 3a4d7cc47..30c63c423 100644
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -2113,6 +2113,9 @@ check_needs_reshape (MetaWindowActor *self)
   cairo_rectangle_int_t client_area;
   gboolean needs_mask;
 
+  if (!priv->mapped)
+    return;
+
   if (!priv->needs_reshape)
     return;