Andrew,
Does the texture problem only happen in offscreen rendering on Linux?
Can you also try disabling the shared context explicitly to see if
it makes any difference? To disable shared context, do
java -Dj3d.sharedctx=false <app>
Regards,
Charmaine Lee
Java3D Engineering Team
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Date: Fri, 26 Jan 2001 10:24:57 -0000
> From: Andrew Phelps <[EMAIL PROTECTED]>
> Subject: Re: [JAVA3D] Java3D on Linux.
> To: [EMAIL PROTECTED]
>
> Let me also share our experiences.
> We are performing off screen rendering on a Linux application server (JRun)
> with the following configuration:
> Linux Redhat 7
> XFree86 version 4.0.1-1
> IBM JDK 2-13 (also tried Blackdown JDK 1.2)
> Blackdown J3D 1.2
>
> We are able to offscreen render 3D objects on the server and send a JPEG
> back to the client with no problems. (We did initailly have problems with X
> crashing from time to time - but this was because we were (accidently)
> setting the image buffer type to RGBA - and off course JPEG does not support
> transparency. This problem has therefore been overcome - but I think in
> this situation the system should have been able to handle this rather than
> crash).
> Our second problem is slightly more pressing and we are unable to solve it.
> When we render a 3D object we are placing a number of texture maps on
> predefined object masks. Unfortunetly the texture appears black (the object
> is successfuly rendered) - even though if we retrieve the texture back from
> the object we know that it is valid because we can visualise it. If we try
> this locally on an NT box we get the required result. Our immediate
> solution is to introduce an NT application server into the system to deal
> purely with 3D rendering - something which our admin guys are very unhappy
> about because of stability. We have tried a number of JDK's and J3D JRE's
> on Linux, but stilll no success.
> I am hoping that someone out there will have experienced the same problem
> and provide us with a solution soon :).
>
> Regards,
>
> Andy Phelps
>
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Ingo Brunberg
> Sent: Friday, January 26, 2001 10:40 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Java3D on Linux.
>
>
> Hi,
>
> let me just share my own experiences (hoping, it may help).
> Since I use XFree 4, I can observe the X server crashing, when I leave
> a Java 3D programm, no matter if using Netscape or the
> appletviewer. This is, what is happening in about nine of ten times
> with indirect rendering. With direct rendering I have not observed
> those crashes.
> There does not seem to be a relation to a particular version of XFree 4
> or the graphics card. I have one computer with a Fire GL 1000 Pro
> (Permedia 2) and one with a Voodoo3. Also I have used XFree versions
> from 4.0 up to 4.0.2 with SuSE (6.4 and 7.0) and also tried RedHat 7.0
> with all the same results. I am using Java 3D 1.2 from Blackdown (what
> else?) and the XFree 4 rpm's from SuSEs ftp-server. What particular
> jdk version (Sun or Blackdown) you are using, also does not matter.
>
> I hope, the Blackdown team can fix this problem, since there are only
> a few graphics cards (such as the voodoo3), for which direct rendering
> is possible at the moment. I would be glad too (speaking for most of
> us), if Java 3D on Linux could stay a little more in sync with Sun's
> releases for the Windows an Solaris platforms, as, in my opinion,
> Linux is one of the most important development (and enduser) platforms
> and 1.2.1 (even in the beta state) the biggest progress in Java 3D.
>
> Best wishes,
>
> Ingo
>
> > >>>>> "Jean-Marie" == Jean-Marie Dautelle
> > >>>>> <[EMAIL PROTECTED]> writes:
> >
> > Jean-Marie> Does anybody has some information about running
> > Java3D Jean-Marie> on Linux. We tried it using the Blackdown
> > Jean-Marie> implementation of Java3D (which I think is the same
> > Jean-Marie> than Sun). The demo seems to run (except that
> > closing Jean-Marie> the window crashes the session).
> >
> > This seems to occur with some XFree 4 versions and indirect
> > rendering. I haven't seen it myself yet.
> >
> > Jean-Marie> But if the windows contains more than a simple
> > Jean-Marie> Canvas3D (i.e. additional swing component), the
> > Jean-Marie> program crashes. Is it a Linux limitation (one
> > unique Jean-Marie> context per window, openGL or not openGL?!).
> >
> > There's a limitation to one OGL context in some Utah-GLX drivers but
> > that should be the only one.
> >
> > Jean-Marie> Or is it a bug of the Blackdown implementation of
> > Jean-Marie> Java3D?
> >
> > Can you send me more information about your system (J2SDK version,
> > XFree version, Graphics card, Mesa version, Linux distribution,
> > stack trace, glxinfo output, ...). Do other OGL applications work
> > correctly on your system?
> >
> >
> > Juergen
>
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