# HG changeset patch
# User prr
# Date 1469468172 25200
# Node ID 59833102e41b3598ee1cf9436589eb8917d26857
# Parent  a7297a9dd5fa6c126a0e73bedb507ed2e55e527d
8147542: ClassCastException when repainting after display resolution change
Reviewed-by: prr, flar
Contributed-by: alexey.ushakov@jetbrains.com

diff -r a7297a9dd5fa -r 59833102e41b jdk/src/java.desktop/unix/classes/sun/java2d/xr/XRPMBlitLoops.java
--- a/jdk/src/java.desktop/unix/classes/sun/java2d/xr/XRPMBlitLoops.java	Mon Jul 25 15:29:24 2016 +0530
+++ b/jdk/src/java.desktop/unix/classes/sun/java2d/xr/XRPMBlitLoops.java	Mon Jul 25 10:36:12 2016 -0700
@@ -127,7 +127,11 @@
             vImgSurfaceType = SurfaceType.IntArgbPre;
         }
 
-        if (vImg == null || vImg.getWidth() < w || vImg.getHeight() < h) {
+        if (vImg == null || vImg.getWidth() < w || vImg.getHeight() < h ||
+            // Sometimes we get volatile image of wrong dest surface type,
+            // so recreating it
+            !(vImg.getDestSurface() instanceof XRSurfaceData))
+        {
             if (vImg != null) {
                 vImg.flush();
             }
@@ -142,6 +146,11 @@
         }
 
         Blit swToSurfaceBlit = Blit.getFromCache(src.getSurfaceType(), CompositeType.SrcNoEa, vImgSurfaceType);
+
+        if (!(vImg.getDestSurface() instanceof XRSurfaceData)) {
+            throw new InvalidPipeException("wrong surface data type: " + vImg.getDestSurface());
+        }
+
         XRSurfaceData vImgSurface = (XRSurfaceData) vImg.getDestSurface();
         swToSurfaceBlit.Blit(src, vImgSurface, AlphaComposite.Src, null,
                              sx, sy, 0, 0, w, h);