8235627: Blank stages when running JavaFX app in a macOS virtual machine

Reviewed-by: arapte, kcr

Author: fthevenet

modules/javafx.graphics/src/main/native-glass/mac/GlassView3D.m

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2019, 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
@@ -93,8 +93,9 @@ - (CGLPixelFormatObj)_createPixelFormatWithDepth:(CGLPixelFormatAttribute)depth
         };
         GLint npix = 0;
         CGLError err = CGLChoosePixelFormat(attributes, &pix, &npix);
-        if ((err == kCGLNoError) && (npix == 0))
+        if (pix == NULL)
         {
+            NSLog(@"CGLChoosePixelFormat: No matching pixel format exists for the requested attributes, trying again with limited capabilities");
             const CGLPixelFormatAttribute attributes2[] =
             {
                 kCGLPFAAllowOfflineRenderers,