Hi Yuri,
You can either set the command line option in the
Java Plugin or do it in programmatic way by
using
System.setProperty("j3d.backgroundtexture", "false");
BEFORE
(1) The JVM classloader load
VirtualUniverse.class
GraphicsConfigTemplate3D.class
Screen3D.class
and
(2) Create an instance of Canvas3D
Because the above action will cause Java3D MasterControl
initialize and read the properties from system.
Thanks.
- Kelvin
------------------
Java 3D Team
Sun Microsystems Inc.
>Delivered-To: [EMAIL PROTECTED]
>MIME-Version: 1.0
>Date: Fri, 8 Feb 2002 18:09:21 -0500
>From: Yuri Nikishkov <[EMAIL PROTECTED]>
>Subject: Re: [JAVA3D] Blurred background
>To: [EMAIL PROTECTED]
>
>Mark and Kelvin,
>
>thanks for the response.
>
>As far as I have understood, you're saying that this is now a default
>behavior on Windows OpenGL for a background picture to be set as texture. I
>tried the Dj3d.backgroundtexture=false option and the picture turns out
>fine. Now we really need the programmatic way to make Java3D use
>glDrawPixels. I don't believe that we can set java's command line option
>from the code and we can't make our users specify this option. Can you
>comment on that? Is there any other way, maybe you can make it a hint?
>
>Kelvin, I tried 1.3 beta1 on a few machines and they all seem to have the
>problem, so that I doubt that this is a card issue. Also I could not find
>SCALE_FIT_MIN, SCALE_FIT_MAX modes on any of the classes that I use.
>java.awt.Image has some scaling policies, but they are not the same. And the
>picture should not be scaled, it has exactly the size that I need.
>
>Yuri.
>
>
>-----Original Message-----
>From: Mark Hood [mailto:[EMAIL PROTECTED]]
>Sent: Friday, February 08, 2002 4:49 PM
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Blurred background
>
>
>> Date: Fri, 8 Feb 2002 16:38:58 -0500
>> From: Yuri Nikishkov <[EMAIL PROTECTED]>
>>
>> It looks as if 1.2.1_03 uses OpenGL's drawPixels and beta1 uses texture
>with
>> filtering turned on to display background. Can you comment on that, is it
>a
>> bug, or a new feature, and how to work around that to get correct (not
>> blurred) background picture?
>
>glDrawPixels was often unaccelerated in Windows OpenGL implementations, so
>at
>some point the default was changed to use texture mapping for the
>background.
>The Solaris release continues to use glDrawPixels.
>
>You can set the j3d.backgroundtexture property on the java command line to
>set
>your preference -- if true, texture is used for backgrounds; if false,
>glDrawPixels is used:
>
> java -Dj3d.backgroundtexture=false MyProgram
>
>-- Mark Hood
>
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