This may be a case of bug 4846822, however that bug was supposed to be
fixed in 1.3.1 final. It does still show up in the 1.3.1 beta on Linux.

Just a guess from looking at the stack trace. As with all bugs on this
list, you need to put together a simple test case and post it.

-mike

On Tue, 2003-10-07 at 03:25, Joachim Bratteli wrote:
> Java3D is giving NullPointerException while rendering on two Canvas3D:
>
> java.lang.NullPointerException
>          at
> javax.media.j3d.GeometryArrayRetained.updateAlphaInInterLeavedData(GeometryArrayRetained.java:2133)
>          at
> javax.media.j3d.GeometryArrayRetained.execute(GeometryArrayRetained.java:2312)
>          at
> javax.media.j3d.VertexArrayRenderMethod.renderGeo(VertexArrayRenderMethod.java:80)
>          at
> javax.media.j3d.VertexArrayRenderMethod.render(VertexArrayRenderMethod.java:53)
>          at javax.media.j3d.RenderMolecule.render(RenderMolecule.java:1941)
>          at javax.media.j3d.TextureBin.renderList(TextureBin.java:1312)
>          at javax.media.j3d.TextureBin.renderList(TextureBin.java:1285)
>          at javax.media.j3d.TextureBin.render(TextureBin.java:1275)
>          at javax.media.j3d.TextureBin.render(TextureBin.java:1229)
>          at javax.media.j3d.AttributeBin.render(AttributeBin.java:389)
>          at javax.media.j3d.EnvironmentSet.render(EnvironmentSet.java:426)
>          at javax.media.j3d.LightBin.render(LightBin.java:361)
>          at javax.media.j3d.RenderBin.renderOrderedBin(RenderBin.java:5110)
>          at javax.media.j3d.RenderBin.renderOrderedBins(RenderBin.java:5069)
>          at javax.media.j3d.RenderBin.renderOrdered(RenderBin.java:5062)
>          at javax.media.j3d.Renderer.doWork(Renderer.java:1267)
>          at javax.media.j3d.J3dThread.run(J3dThread.java:250)
>
> Any suggestions to what this problem could be?
>
> --
>   Joachim Bratteli - [EMAIL PROTECTED]
> System Programmer - IFE / OECD Halden Reactor Project
>   Halden VR Centre - http://www.ife.no/vr/
>
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--
Mike Pilone <mpilone at botch dot com>

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