I'm actually using a Thinkpad T21 laptop - 512mb memory, Savage graphics
card - 8mb.
I updated the driver for the card to the latest (7.40.44 dated 10/01)
Didn't help.
Downloaded and installed the OpenGL version of Java 3D 1.3beta
Performance was really bad, and no messages.
Downloaded and installed the DirectX version of Java 3D 1.2.1_04.
Performance seems to be consistantly good as it was before installing Java
1.4.
I do get one message box when the Canvas3D instantiates:
"Fail to create 3D Device -887602ea"
I hit OK, and things work. It's a nuisance, but doesn't seem to impact
anything.
-----Original Message-----
From: Kelvin Chung [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 12, 2002 11:14 AM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] Seemingly random performance degradation.
Hi,
>Date: Mon, 11 Mar 2002 14:38:47 -0800
>From: "Innes, Erik" <[EMAIL PROTECTED]>
>Subject: [JAVA3D] Seemingly random performance degradation.
>To: [EMAIL PROTECTED]
>MIME-version: 1.0
>Delivered-to: [EMAIL PROTECTED]
>
>I've changed my Java JDK from 1.3 to 1.4 and Java 3D from 1.2 to the
>1.3beta. I'm running on Windows 2000, using DirectX.
>
>Performance of the Canvas3D display for my animation is extremely slow,
>no matter what I'm doing in my application (by about a factor of 10).
>Occassionally, when I execute the application, it performs fine, as it
>did before. When the application is launched, it either performs just
>fine or very slowly. (My Java2D app has no problems).
>
>On exit, the following prints out:
>"Fail to create hardware D3D Device, switch to use reference
>rasterizer. - D3DERR_OUTOFVIDEOMEMORY"
>
>I'm wondering if there's a memory management problem, where it's
>automatically going to a very slow rendering mode.
>
>Any ideas what is going on, and how to fix it?
>
Java3D v1.3 beta1 DirectX version use DirectX8.0 API.
(v1.2.1 use DirectX 7.0 API). We found that some old driver will not support
hardware accelerated mode under DX8.0 for certain display mode (even though
it works using DX7.0 API) In particular neomagic chipset have this
interesting behavior. If you run the demo program come with DX8.0 SDK you
should also see the same behavior - can't create D3D device using hardware
accelerated mode. Instead of fail and quit current Java3D version will fall
back to reference mode to let you see something at least, that's why you see
the message which should print on startup.
To fix the problem, you can either
(i) Try switching to another display mode (32bit/24bit/16bit)
to see which one support hardware accelerated mode.
(ii) If (i) fail, try update the latest driver from the
vendor.
(iii) If (ii) fail, use the OpenGL version of Java3D.
(iv) If (iii) fail, replace legacy graphics card !
Thanks.
- Kelvin
---------------
Java 3D Team
Sun Microsystems Inc.
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