when running self developed astronomy star chart under JDK build 1.8.0_11-b12 clipping not working correctly I am using GraphicsContex clip method and the rendering very strange and displayed different color other than the intended one and the program become very slow and freeze all these issues not present under JDK 1.7.0_65 all test under Windows 7 ultimate Graphics Card Radeon X1950.


/****** Exception *******/


java.lang.NullPointerException
    at com.sun.prism.sw.SWGraphics.fillRect(SWGraphics.java:396)
    at com.sun.javafx.sg.prism.NGCanvas$RenderBuf.validate(NGCanvas.java:244)
    at com.sun.javafx.sg.prism.NGCanvas.renderClip(NGCanvas.java:625)
    at com.sun.javafx.sg.prism.NGCanvas.renderStream(NGCanvas.java:781)
    at com.sun.javafx.sg.prism.NGCanvas.renderContent(NGCanvas.java:578)
    at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2043)
    at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1951)
    at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:225)
    at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2043)
    at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1951)
    at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:469)
    at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:324)
    at com.sun.javafx.tk.quantum.UploadingPainter.run(UploadingPainter.java:132)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
    at java.lang.Thread.run(Thread.java:745)