PRISM: NPE when running a transparent stage test

Run the attached test with -profile prism. If you get the following NPE on the console, bug is reproduced. This is not reproducible with swing pipeline.

I reproduced it on WinVista - 6u14 - soma-graphics-scrum-b142.

Stack Trace:
Initialized prism pipeline: com.sun.prism.d3d.D3DPipeline
User screen size 0x0
Detected screen size 1280x800
Hey, I'm initializing the PrismToolkit man!!
Detected screen size 1280x800
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at com.sun.javafx.runtime.provider.GUIRuntimeProvider.run(GUIRuntimeProvider.java:68)
        at com.sun.javafx.runtime.Entry.start(Entry.java:84)
        at com.sun.javafx.runtime.Main.main(Main.java:80)
Caused by: java.lang.NullPointerException
        at com.sun.javafx.tk.prism.PrismScene$1.run(PrismScene.java:215)
        at com.sun.prism.tk.RunnableEvent.run(RunnableEvent.java:47)
        at com.sun.prism.tk.PrismToolkitImpl.processRenderEvent(PrismToolkitImpl.java:157)
        at com.sun.prism.tk.PrismToolkitImpl.processRenderTasks(PrismToolkitImpl.java:173)
        at com.sun.prism.tk.PrismToolkitImpl.run(PrismToolkitImpl.java:109)
        at com.sun.javafx.tk.prism.PrismToolkit.startup(PrismToolkit.fx:126)
....