I scribbled a tech note to myself about the Matrox a while ago that it
needs:
  template.setDepthSize(0)

I'm not sure if that would help you at all.

- John Wright
Starfire Research

Raghavendra R wrote:
>
> Hi,
>
> I was able to get a workaround for this error. This is due to a bug in
> the Matrox Millenium graphics card drivers (G400, G450, G550 etc) due to
> which Java3D 1.3 does not find any supported Graphics configurations.
>
> By default, the Z-Buffer in this graphics card is a 12 bit one whereas
> Java3D requires either a 16 bit or a 32 bit Z-Buffer for creating a
> non-null graphics configuration. This has been documented under Sun
> Java3D bug list (Bug ids: 4737013 and 4760874 (Synopsis: Java3D 1.3
> OpenGL version on Matrox 450 no supported Graphics Configurations). The
> earlier version of Java3D runtime (1.1.3 etc) was accepting a 12 bit
> Z-buffer whereas the current version requires a 32 bit Z-buffer.
>
> The solution:
> The simplest solution is to enable 32-bit Z-buffering in the Matrox
> Millenium graphics drivers.
>
> Thanks,
> Raghav
>
> Florin Herinean wrote:
>
> >I'm not sure, but it might be possible when j3d.stereo system property is
> >set to REQUIRED and no stereo hardware support present. That's the only
> >difference between SimpleUniverse.getPreferredConfiguration and the default
> >graphics configuration used by Canvas3D constructor when a null
> >GraphicsConfiguration is passed through.
> >
> >Cheers,
> >
> >Florin
> >
> >-----Urspr�ngliche Nachricht-----
> >Von: Raghavendra R [mailto:[EMAIL PROTECTED]
> >Gesendet: Dienstag, 10. Juni 2003 14:52
> >An: [EMAIL PROTECTED]
> >Betreff: [JAVA3D] SimpleUniverse.getPreferredConfiguration returns NULL
> >
> >
> >Hi,
> >
> >I am resending this since i got an "undelivered message from postfix".
> >
> >Can SimpleUniverse.getPreferredConfiguration return NULL anytime?
> >One of our customers is getting an
> >
> >" ERROR: Canvas3D constructed with a null GraphicsConfiguration
> >  This will cause a NullPointerException in a subsequent release "
> >
> >when a Canvas3D is constructed passing
> >"SimpleUniverse.getPreferredConfiguration" as the argument.
> >
> >The Java version is 1.4.1_03 and Java 3D is 1.3.1 running on Windows
> >2000 Professional.
> >
> >Thanks,
> >Raghav
> >
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> >
> >
> >
>
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