RE: Performer 2.2.3 on textures

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Acosta, Mark W (acostmw++at++texaco.com)
Wed, 27 Jan 1999 13:23:30 -0600

Yair,
        I added the pfLPointState to my application and it works fine now.
Thanks for the quick response. I had planned to apply the fix conditionally
only if I was using 2.2.3, but I found that a pfQuerySys for the Performer
major, minor and maint version numbers in 2.2.3 reports back 2.2.2. A minor
bug I assume. Thanks anyway.

Mark Acosta
Texaco

        -----Original Message-----
        From: yair++at++polygon.engr.sgi.com [SMTP:yair++at++polygon.engr.sgi.com]
        Sent: Tuesday, January 26, 1999 7:16 PM
        To: acostmw++at++exchange.texaco.com)
        Cc: info-performer++at++polygon.engr.sgi.com
        Subject: Re: Performer 2.2.3 on textures

        Hi Mark !

> I'm also having problems with 2.2.3. I have a geoset with a list
of fluxed
> points (PFGS_POINTS) that won't render at all with 2.2.3. It fails
on Onyx2,
> Octane, and O2 systems in both n32 and 64 bit mode. Works fine
with previous
> versions of Performer.

        You hit on a bug with point primitives. This bug has nothing to do
with the
        Flux-ing of GeoSet attributes. Following is the complete bug
description and
        a work-around:

        This bug exists in 2.2.3 and has already been fixed in 2.2.4.

        Conditions for the bug:
          1. A pfGeoSet with primitive type PFGS_POINTS.
          2. No attribute PFSTATE_LPOINTSTATE (light-point state) on the
attached
             GeoState.

        Bug behavior:
          On non-O2 machines, the points will not show up.
          On O2, the program will crash.

        The Work-around:

          1. Create an empty light-point state:
              pfLPointState *lps = new pfLPointState;

          2. Attach it to your pfGeoState (that you use on the POINT
pfGeoSet):
              geoState->setAttr (PFSTATE_LPOINTSTATE, lps);

        I modified your sample program to include this workaround and it now

        runs well on O2 and other machines (Program follows)

        -yair
         

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