I suspect some other problem as G450 certainly does support a depth
buffer. No modern card, as of '97 or so, lacks this support. Even
scene-capture cards, ala Kyro, perform depth-buffer operations.

-----Original Message-----
From: Octavian Nasarimba [mailto:[EMAIL PROTECTED]] 
Sent: Tuesday, August 06, 2002 1:30 AM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] j3d1.3 failes with Matrox G450 card on Windows2000

Hi,

I had the same problem.
>From the JavaDoc for GraphicsConfigTemplate3D:
----------------------------------
public GraphicsConfigTemplate3D()
Constructs a GraphicsConfigTemplate3D object with default parameters.
The default values are as follows:
        depthSize : 16
        doubleBuffer : REQUIRED
        sceneAntialiasing : UNNECESSARY
        stereo : UNNECESSARY
        redSize : 2
        greenSize : 2
        blueSize : 2


---------------------------------

Calling tmpl.setDepthSize(0) for the template will do.

It seems that Matrox G450 does not support depth buffer.


Regards

Anirban Bhadore wrote:
>
> Hi guys,
>
> I am not able to run j3d1.3 with jdk1.4 or jdk1.3.1_03 on a Dell
machine(
> Windows2000, service pack 2) which has matrox G450 Millenium DualHead
> graphics driver( version - 5.72.21.0, Driver date - 9/28/2001).
>
> I debug through the j3d jar code and found out when
> SimpleUniverse.getPrefferedConfigeration() method tries to grab the
best
> GraphicsConfiguration from the Screen Device ( of the
> LocalGraphicsConfiguration) with a GraphicsConfigTemplate3D , it gets
null.
> In fact all the 8 GraphicsConfigurations that the system offers,
return
> false when tested for compatibility with the above 3d template( using
> isGraphicsConfigSupported(GraphicsConfiguration gc) method of the
> GraphicsConfigTemplate class ).
>
> This works fine with the Intel810 Graphics driver though( on Windows
2000
> and WinNT4.0). I have tried to upgrade the matrox G450 driver to the
latest
> one available , but that did not help.
>
> Deos j3d1.3 run with G450 matrox drivers? Does anybody has any
experience?
> Do I need to upgrade the bios?
>
> Hope to hear from you !
>
> thanks
> anirban
>
>
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