Hi Kelvin -

Thank you very much. Your suggestion actually did solve my problem. I really
appreciate it. Just to summarize my findings to the community:

1. Got D3D hardware acceleration to work on notebook Dell Inspiron 7500,
1400x1050, Rage Mobility 8 MB. This makes a BIG difference when doing
textures.

2. Also finally managed to get OpenGL hardware acceleration to work on
another laptop (Dell Inspiron 7000, same graphics card) by:
a. getting the latest ATI video drivers from the Dell library
b. enabling the OpenGL tab for the screen settings in the registry
c. changing "Optimization preference" from "Quality" to "Performance".
This appears to give very similar performance to the D3D HAL above.

One remaining issue ... for some reason I can't get any fogs to work under
D3D. Fogs don't show up and kill any textures in the scene. It does seem to
work fine under OpenGL. Not implemented on D3D perhaps?

- Rudolf

-----Original Message-----
From: Discussion list for Java 3D API
[mailto:[EMAIL PROTECTED]]On Behalf Of Kelvin Chung
Sent: Monday, January 22, 2001 10:53
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] 4296733 Canvas fail to resize under window for
some configs


Hi Rudolf,

    This is cause by driver fail to recreate D3D context during
resize to a bigger Canvas using hardware accelerated rendering.

4403360 - D3D: window resize may fail if there is not enough hardware memory

We notice this in graphics card that don't have enough memory
(especially in 32 bit color mode). Switching to use 16 bit
color mode sometime help. Our v1.2.1 release (not beta2)
will address this problem by falling back to
software emulation mode in this case when resize fail for
whatever reason. Note that the following two bugs will also fix
in our release (not beta2):

4406373 - D3D: viewport did not set correctly inside Browser after it move
4373686 - D3D: Using scrollbar on Applets not working under Win32

Thanks.

-  Kelvin
--------------
Java 3D Team
Sun Microsystems Inc.


>MIME-Version: 1.0
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>X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
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>Date: Sat, 20 Jan 2001 18:57:53 -0800
>From: "Rudolf J.C. Buijs" <[EMAIL PROTECTED]>
>Subject: [JAVA3D] 4296733 Canvas fail to resize under window for some
configs
>To: [EMAIL PROTECTED]
>
>Hi all -
>
>Are there any workarounds for the above bug? Or has it been fixed by any
>chance?
>
>I have one particular machine which happens to be my demo machine (a Dell
>Inspiron 7500, W2K, J3D 1.2.1 beta DirectX) that won't let me resize the
>canvas (inside a Mainframe). I can increase the window a few millimeter at
>most, but if I try to resize it more than that, I always get either a
>Z-buffer error message or some other DirectX error message.
>
>This problem does not occur on any other machine (same JRE, J3D etc).
>
>Any ideas for workarounds?
>
>Many thanks in advance - Rudolf

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