src/java.desktop/macosx/classes/sun/lwawt/macosx/CWarningWindow.java

*** 27,36 ****
--- 27,37 ----
  
  import sun.awt.AWTAccessor;
  import sun.awt.IconInfo;
  import sun.java2d.SunGraphics2D;
  import sun.java2d.SurfaceData;
+ import sun.java2d.metal.MTLLayer;
  import sun.java2d.opengl.CGLLayer;
  import sun.lwawt.LWWindowPeer;
  import sun.lwawt.PlatformEventNotifier;
  import sun.lwawt.SecurityWarningWindow;
  
*** 298,307 ****
--- 299,325 ----
                      public boolean isOpaque() {
                          return false;
                      }
                  };
              }
+             public MTLLayer createMTLLayer() {
+                 return new MTLLayer(null) {
+                     public Rectangle getBounds() {
+                         return CWarningWindow.this.getBounds();
+                     }
+ 
+                     public GraphicsConfiguration getGraphicsConfiguration() {
+                         LWWindowPeer peer = ownerPeer.get();
+                         return peer.getGraphicsConfiguration();
+                     }
+ 
+                     public boolean isOpaque() {
+                         return false;
+                     }
+                 };
+             }
+ 
          };
      }
  
      @Override
      public void dispose() {