Re: (Solved) Lighting problem of Flight models

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Marcus Barnes (marcus++at++multigen.com)
Fri, 30 Oct 1998 19:39:40 -0800

On Oct 30, 4:55pm, Marcus Barnes wrote:
>On Oct 29, 2:11pm, Mario Veraart wrote:
>>.. The loaded models where not able to DISABLE the texturing and so they
>>got stuck with whatever there was left on the OpenGL state.
>
>The OpenFlight loader DOES disable texture as appropriate. Are you calling
>pfdMakeShared() or similar? Also don't enable PFFLT_INHERIT_GSTATE mode. It's
>use is deprecated by pfdMakeShared() and friends.

I think I've discovered that pfdMakeSharedScene() has a bug in Performer 2.2 at
least. I am able to reproduce flashing as Mario describes wrt texture and
lighting states.

It appears that geometry with lighting off, no material, no normals, colors,
texture on, texture, and a BLEND texture environment (all originally specified)
will flash if drawn after lit geometry (and lighting is enabled). The same
geometries will not flash, as the eye point changes, when pfdMakeSharedScene()
is not called.

Regards.

--
+ Marcus Barnes, Technical Staff        mailto:marcus++at++multigen.com +
+ Multigen-Paradigm Inc.                http://www.multigen.com    +
+ 550 S. Winchester Blvd.               phoneto:1-408-367-2654     +
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