Re: Wireframe PFGS_QUADS

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Allan Schaffer (aschaffe)
Wed, 6 Oct 1993 15:39:53 -0700

On Oct 6, 6:20pm, Kevin Russo wrote:
> I've noticed when looking at models loaded by LoadSgo in the complex.c
> demo or in perfly.c, that the quads have a stray line from one vertex to
> some far away place when displayed in wireframe mode. I've verfied
> that my sgo models don't contain any bogus verts/norms. In fact, the
> problem is easy to see with a single quad in an sgo file.
>
> Is this just a bug in the internal Performer draw routine for
> PFGS_QUADS primitives? Triangles, lines and flat shaded quads look ok.
>
> I'm using Performer 1.0 on an Indigo R3000 GR2-XS24/Z with Irix 4.0.5F.

Yep, this is a bug in 1.0 and 1.1. If I remember correctly, it only
happens on EXPRESS Graphics platforms (XS, XS24, ELAN, etc) with wireframe
quads.

Allan

-- 
Allan Schaffer
Silicon Graphics
aschaffe++at++sgi.com

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