From ec54e400eedcddfde53cd27a2a90d05b7767dd0a Mon Sep 17 00:00:00 2001
From: Andrew Brygin <bae@openjdk.org>
Date: Thu, 30 Dec 2010 11:33:10 +0300
Subject: [PATCH] 7003434:
 test/closed/java/awt/FullScreen/DisplayChangeVITest/DisplayChangeVITest.java
 fails with ClassCastExc

Reviewed-by: jgodinez, prr
---
 .../classes/sun/java2d/opengl/WGLVolatileSurfaceManager.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/jdk/src/windows/classes/sun/java2d/opengl/WGLVolatileSurfaceManager.java b/jdk/src/windows/classes/sun/java2d/opengl/WGLVolatileSurfaceManager.java
index ba655bf00ba..7c4fde1b640 100644
--- a/jdk/src/windows/classes/sun/java2d/opengl/WGLVolatileSurfaceManager.java
+++ b/jdk/src/windows/classes/sun/java2d/opengl/WGLVolatileSurfaceManager.java
@@ -133,7 +133,9 @@ public class WGLVolatileSurfaceManager
 
     @Override
     protected boolean isConfigValid(GraphicsConfiguration gc) {
-        return ((gc == null) || (gc == vImg.getGraphicsConfig()));
+        return ((gc == null) ||
+                ((gc instanceof WGLGraphicsConfig) &&
+                 (gc == vImg.getGraphicsConfig())));
     }
 
     @Override