Lee,
In theory if you installed the OpenGL version of Java 3D and OpenGL
hardware support was not available then Java 3D should render purely
software and we'd darn well better not have any lock ups (otherwise it's
clearly a Java 3D problem).
But if you install the DirectX version of Java 3D aren't you still going
through some driver issues? I think you'd have to go to a very old
video card to not have some DirectX 3D acceleration. And even if you
aren't getting video card acceleration I imagine there is always a
possibility of a conflict with a DirectX driver (after all there are
MANY versions of DirectX).
The overall stability issue of 3D is something that concerns me. It
certainly isn't just a Java 3D issue (other software hits lots of quirks
too). Developing 3D software currently seems like a tech support
nightmare (unless you give your customers the standard "must be a driver
problem update your video card drivers" answer).
- John Wright
Starfire Research
"J. Lee Dixon" wrote:
>
> John,
>
> I can understand having faster drivers correcting the problem, but if
> the user does not have an accelerated 3D card then it should still run
> in DirectX software-only mode, albeit slow. In this case, I can't rely
> on driver updates to fix the problem.
>
> I guess I still need to narrow this down to a test case that the Java3D
> group can work with.
>
> -Lee
>
> > -----Original Message-----
> > From: John Wright [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, March 23, 2001 8:34 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [JAVA3D] Sun help! Applet freezes on Win98/ME machines
> >
> >
> > Lee,
> >
> > We test constantly on Win98 and were seeing some problems that sound
> > exactly like what you describe. Updating to Elsa's latest
> > driver for the
> > GeForce 256 appears to have cleared up the problems (was
> > surprised that
> > NVidia's latest Generic Detonator 3 driver exhibited the
> > problem). For
> > now our problem seems to have gone away.
> >
> > - John Wright
> > Starfire Research
> >
> > "J. Lee Dixon" wrote:
> > >
> > > Yep, completely wedged, hung, locked-up, frozen, melvin-ed, 86'd.
> > > Sometimes I have to hit the restart button.
> > >
> > > And yes, I have also tried upgrading to DirectX 8, and doing Windows
> > > Update. Still dies.
> > >
> > > My next step was to make one of the machines dual-boot and install
> > > Windows 2000. After doing this on the TNT2/Celeron 566Mhz
> > machine, my
> > > applet ran fine, but slow (5fps) because I didn't have the
> > TNT2 drivers
> > > installed yet. After installing the Detonator3 drivers,
> > I've got a good
> > > frame rate (50fps) and no freeze-up.
> > >
> > > Summing up... same hardware, different OS, Win2k works,
> > WinME does not.
> > > Could it be that Win2K has better thread handling??
> > >
> > > As for a test program.... ;) Could you guys do anything if
> > I sent you
> > > my whole set of JARs? Do you guys have Win98 machines to test on?
> > >
> > > -Lee
> > >
> > > > -----Original Message-----
> > > > From: Doug Twilleager [mailto:[EMAIL PROTECTED]]
> > > > Sent: Friday, March 23, 2001 2:13 PM
> > > > To: [EMAIL PROTECTED]
> > > > Subject: Re: [JAVA3D] Sun help! Applet freezes on
> > Win98/ME machines
> > > >
> > > >
> > > > This feels a lot like a deadlock. Moving from OS to OS can change
> > > > thread timing and scheduling behavior. Is there any way to get a
> > > > thread dump, or are you completely wedged?
> > > >
> > > >
> > > > Doug Twilleager
> > > > Sun Microsystems
> > > >
> > > > >MIME-Version: 1.0
> > > > >Subject: [JAVA3D] Sun help! Applet freezes on Win98/ME machines
> > > > >To: [EMAIL PROTECTED]
> > > > >
> > > > >My project applet/application has been running great on my
> > > > Win2k machine
> > > > >for a while now. But trying to run it in applet or
> > > > application mode on
> > > > >a Windows 98 AND a Windows ME machine gives
> > unpredictable results.
> > > > >Somewhere along the way, sometimes before the first frame is
> > > > rendered,
> > > > >otherwise just later during navigation, the whole thing just
> > > > freezes up.
> > > > >Even Windows is frozen... pressing CTRL-ALT-DEL brings
> > up the task
> > > > >manager (sometimes), but even that window is frozen.
> > > > >
> > > > >I am currently investigating this problem with two computers that
> > > > >replicate the problem. It happens with several
> > different video cards
> > > > >(ATI, Nvidia TNT2) and with DirectX hardware
> > acceleration disabled.
> > > > >Yes, it dies with OpenGL too.
> > > > >
> > > > >I am specifically testing these machines because they are more
> > > > >mainstream, i.e. Win98 machines running CPUs around
> > 550-750 Mhz. I'm
> > > > >not getting good results and it makes me feel that
> > Java/Java3D is not
> > > > >stable on slower machines.
> > > > >
> > > > >I do have an applet that lets me continually add more
> > > > geometry to see if
> > > > >I can make the system freeze, but, of course, it runs
> > like a champ.
> > > > >
> > > > >Of course my application is more advanced... loading models,
> > > > animations,
> > > > >interactive navigation and selection, even image skins.
> > But since it
> > > > >dies at the beginning sometimes before rendering has begun, I'm
> > > > >wondering what I could be doing wrong.
> > > > >
> > > > >Anybody else have these types of troubles on Win98
> > machines?? Does
> > > > >anyone have a "chunky" example I could try on these machines
> > > > to see if
> > > > >it is just my demo?? I'm desperate, can't you tell ;)
> > > > >
> > > > >-Lee
> > > > >
> > > > >J. Lee Dixon
> > > > >SAIC - Celebration, FL
> > > > >321-939-7917
> > > > >[EMAIL PROTECTED] AOL: LeeOrlando
> > > > >
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