src/java.desktop/windows/classes/sun/awt/windows/TranslucentWindowPainter.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -43,10 +43,11 @@
 import sun.java2d.pipe.hw.AccelGraphicsConfig;
 import sun.java2d.pipe.hw.AccelSurface;
 import sun.security.action.GetPropertyAction;
 
 import static java.awt.image.VolatileImage.*;
+import sun.java2d.SurfaceData;
 import static sun.java2d.pipe.hw.AccelSurface.*;
 import static sun.java2d.pipe.hw.ContextCapabilities.*;
 
 /**
  * This class handles the updates of the non-opaque windows.

@@ -301,14 +302,16 @@
         @Override
         protected boolean update(Image bb) {
             if (bb instanceof DestSurfaceProvider) {
                 Surface s = ((DestSurfaceProvider)bb).getDestSurface();
                 if (s instanceof AccelSurface) {
-                    final int w = bb.getWidth(null);
-                    final int h = bb.getHeight(null);
                     final boolean arr[] = { false };
                     final AccelSurface as = (AccelSurface)s;
+                    double scaleX = ((SurfaceData)as).getDefaultScaleX();
+                    double scaleY = ((SurfaceData)as).getDefaultScaleY();
+                    final int w = (int) Math.ceil(bb.getWidth(null) * scaleX);
+                    final int h = (int) Math.ceil(bb.getHeight(null) * scaleY);
                     RenderQueue rq = as.getContext().getRenderQueue();
                     rq.lock();
                     try {
                         BufferedContext.validateContext(as);
                         rq.flushAndInvokeNow(new Runnable() {