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John Rohlf (jrohlf++at++tubes)
Tue, 22 Mar 94 14:36:32 PST

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In reply to: Susanne Huber: "Real-Time Simulation"

>
> I am using Performer 1.0 with an Indigo Extreme running Irix 4.0 .
> This fog is implemented over a very simple data base with some
> pfLightPoints, and some simple polygon geosets.
>
> My problem is that the fog only seems to be applied to the polygons.
> The lightpoints continue to shine through the fog at any distance.
> I am applying the fog in the EarthSky model similar to the way it is
> done in perfly.

        In 1.0 pfLightPoints are not fogged. In 1.2 they are fogged
        but the fog onset and opaque ranges are modified by the
        values passed to pfLPointFogScale. This allows lightpoints to
        shine through fog more than non-emissive surfaces.

> If I have emissive polygons will they also shine through the fog?
> Any help on this is appreciated.

        Unfortunately not. I think this is really a GL issue but if it
        doesn't get resolved in the GL then we will handle it in
        Performer in a future release.

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