Re: Cliptextures in Perf. 2.5

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From: Paolo Farinelli (paolo++at++sgi.com)
Date: 01/28/2002 15:42:28


Hi Marco,

I am afraid there is no easy way to disable cliptexture emulation.
I will consider adding an environment variable for this purpose in
our next release (pf2.5.1).

For now, you will have to edit your .ct file, by setting VirtualSize
to be equal to ClipSize. This will ensure that no dynamic texture
paging takes place.

You could also attempt to get cliptexture emulation to work by reducing
memory requirements (although this may well not be your problem).
Do this by setting the lookaround parameter to 1 in your .ct file,
and by reducing VirtualSize (and/or ClipSize).

Also: can you at least view your cliptexture data using
'clipfly mycliptex.ct' (on the O2, using cliptex emulation?)?

Thanks for your feedback!

Regards,

Paolo

Marco O Lanzagorta wrote:
>
> Hello,
>
> I just got the new Performer 2.5 and have the following problem:
>
> I have several applications that use cliptextures and they were working
> fine in 2.4, and I mean fine in the console of our Onyx 3400, and also
> running remotely from an O2 (although cliptexturing was not enabled in
> this case).
>
> With Performer 2.5, they still work fine in the console. But when running
> from the remote O2 they behave in various undesirable ways. Indeed, they:
> dump core, freeze, mess up the tiles, or just make the O2 crash.
>
> This makes me think that the new cliptexture emulation feature is
> conflicting with something. As the developer's manual is still for
> 2.4 I can not find any information about how to proceed. The new man
> pages do not provide any helpful advise or information.
>
> Any idea of what I have to modify, so my Performer 2.4 applications can
> run from the remote O2 using Performer 2.5? (Even if the cliptexture
> emulation is off.)
>
> Thanks,
>
> Marco
>
> ===========================================================================
> Dr. Marco Lanzagorta email: lnzgrt++at++volt.nrl.navy.mil
> Code 5594 phone: (202) 767-8427
> Center for Computational Science fax : (202) 404-7402
> Naval Research Laboratory
> 4555 Overlook Ave, S.W.
> Washington, DC 20375 http://ohm.nrl.navy.mil/staff/lnzgrt
> ===========================================================================
>
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-- 
Paolo Farinelli                                           paolo++at++sgi.com
Member of Technical Staff, OpenGL Performer              1-650-933-1808
Silicon Graphics        1600 Amphitheatre Pkwy, Mountain View, CA 94043


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