From 38a8938d9ff440ee5c68bc54eb815f300de97947 Mon Sep 17 00:00:00 2001
From: Clemens Zeidler <clemens.zeidler@googlemail.com>
Date: Thu, 4 Aug 2011 05:53:26 +0000
Subject: [PATCH] Only redraw visible region.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42568 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/servers/app/Window.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/servers/app/Window.cpp b/src/servers/app/Window.cpp
index def7a11792..656a683333 100644
--- a/src/servers/app/Window.cpp
+++ b/src/servers/app/Window.cpp
@@ -2113,6 +2113,7 @@ Window::DetachFromWindowStack(bool ownStackNeeded)
 
 	if (remainingTop != NULL) {
 		dirty.Include(&remainingTop->VisibleRegion());
+		dirty.IntersectWith(&remainingTop->VisibleRegion());
 		fDesktop->RebuildAndRedrawAfterWindowChange(remainingTop, dirty);
 	}
 	return true;