Andrey,
We're interested in your finding, esp. how the scene is constructed.
Do you have a test program for us ?
Chien Yang
Java 3D Team.
> X-Priority: 3 (Normal)
> Mime-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Date: Tue, 3 Apr 2001 20:49:03 +0300
> From: Andrey <[EMAIL PROTECTED]>
> Subject: Re: [JAVA3D] Memory usage. Why?
> To: [EMAIL PROTECTED]
>
> Hello David,
>
> Tuesday, April 03, 2001, 7:29:48 PM, you wrote:
>
> YDJ> I believe that unless your texture is by reference Java3d creates a
> YDJ> *retained* version (as it does for everything) For most things this copy
is
> YDJ> not that expensive, but for geometry and textures it is *quite*
expensive.
> YDJ> When I profile my application I see approx 40 percent of my memory being
> YDJ> stored in retained versions of my scenegraph. I can't really figure out
why
> YDJ> it is necessary to do that. The problem is that if you use by-reference
for
> YDJ> things, to save memory, you also pay a performance penalty because Java3d
> YDJ> starts sending things every frame and stop using display lists.
>
> YDJ> Dave Yazel
>
> I think you're right, but look - Java3D takes memory twice:
> First - when I add Shape3D to BranchGroup
> Second - when I add BranchGroup to Universe in first time
> and in both cases - about 10Mb.
> And if I do
> BG.detach();
> and then MyUniverse.addBranchGraph(BG); (second time) it DOESN'T TAKE
> MEMORY again. Do you know why it is so?
>
> YDJ> -----Original Message-----
> YDJ> From: Andrey [mailto:[EMAIL PROTECTED]]
> YDJ> Sent: Tuesday, April 03, 2001 12:10 PM
> YDJ> To: [EMAIL PROTECTED]
> YDJ> Subject: [JAVA3D] Memory usage. Why?
>
>
> YDJ> Hi everybody.
>
> YDJ> When create some textured object and then add then to Branch group, it
> YDJ> takes
> YDJ> about 10Mb. OK.
> YDJ> But when I add a this BranchGroup to Universe, it takes in additional
8Mb.
> YDJ> So what does Java3D do when BranchGroup is adding to Universe to take so
> YDJ> much memory?
>
> YDJ> I got WindowsNT,RivaTNT2, jdk 1.2.1 with Java3D for OpenGL.
>
> YDJ> --
> YDJ> Best regards,
> YDJ> Andrey mailto:[EMAIL PROTECTED]
>
> YDJ>
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>
> YDJ>
===========================================================================
> YDJ> To unsubscribe, send email to [EMAIL PROTECTED] and include in the
body
> YDJ> of the message "signoff JAVA3D-INTEREST". For general help, send email
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> YDJ> [EMAIL PROTECTED] and include in the body of the message "help".
>
>
>
> --
> Best regards,
> Andrey mailto:[EMAIL PROTECTED]
>
> ===========================================================================
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> of the message "signoff JAVA3D-INTEREST". For general help, send email to
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