From 7b506fdc840aebed6b5acb91437a2cb620b5bddc Mon Sep 17 00:00:00 2001
From: Jeremy Huddleston <jeremyhu@apple.com>
Date: Wed, 21 Apr 2010 08:38:53 -0700
Subject: [PATCH] rootless: Add some sanity checking to miPaintWindow

This avoids painting the root window when it isn't actually drawable.

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
---
 mi/miexpose.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mi/miexpose.c b/mi/miexpose.c
index 1c9c3a436..f52b49211 100644
--- a/mi/miexpose.c
+++ b/mi/miexpose.c
@@ -552,6 +552,9 @@ miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
     DrawablePtr	drawable = &pWin->drawable;
 
 #ifdef ROOTLESS
+    if(!drawable || drawable->type == UNDRAWABLE_WINDOW)
+	return;
+
     if(IsFramedWindow(pWin)) {
         RootlessStartDrawing(pWin);
         RootlessDamageRegion(pWin, prgn);