From 5d1c5d355fa71ef885c51fb64a04affde0dcb66b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lubo=C5=A1=20Lu=C5=88=C3=A1k?= <l.lunak@kde.org>
Date: Tue, 13 May 2008 20:49:56 +0000
Subject: [PATCH] Skip windows not ready for painting before computing screen
 area to redraw.

svn path=/trunk/KDE/kdebase/workspace/; revision=807441
---
 composite.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/composite.cpp b/composite.cpp
index 4157a38b92..048f37e7ba 100644
--- a/composite.cpp
+++ b/composite.cpp
@@ -300,6 +300,12 @@ void Workspace::performCompositing()
         windows.removeAll( t );
         windows.append( t );
         }
+    // skip windows that are not yet ready for being painted
+    ToplevelList tmp = windows;
+    windows.clear();
+    foreach( Toplevel* c, tmp )
+        if( c->readyForPainting())
+            windows.append( c );
     foreach( Toplevel* c, windows )
         { // This could be possibly optimized WRT obscuring, but that'd need being already
           // past prePaint() phase - probably not worth it.
@@ -308,11 +314,6 @@ void Workspace::performCompositing()
         repaints_region |= c->repaints().translated( c->pos());
         c->resetRepaints( c->rect());
         }
-    ToplevelList tmp = windows;
-    windows.clear();
-    foreach( Toplevel* c, tmp )
-        if( c->readyForPainting())
-            windows.append( c );
     QRegion repaints = repaints_region;
     // clear all repaints, so that post-pass can add repaints for the next repaint
     repaints_region = QRegion();