Re: Fog and Raster Light Points.

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Angus Dorbie (dorbie++at++sgi.com)
Wed, 28 Oct 1998 10:47:03 -0800

Oops, pressed the wrong button on the other reply & sent too soon.

Can you send more info on your light point state?

If you're pressed and need something soon you could also try out
calling the equivalent gl functionality offset stuff yourself.

glFogf(GL_FOG_OFFSET_VALUE_SGIX, values);
glFogf(GL_FOG_OFFSET_SGIX);

This is not just for light points so you'd have to enable it in a
draw callback around your lights lights.

Cheers,Angus.

Paul Berridge wrote:
>
> I'm trying to get fog to work on raster light points.
>
> If I use:
>
> pfGStateMode(gstate, PFSTATE_ENFOG, TRUE);
>
> then light points fade with range but fog punch through does not have
> any effect.
>
> With:
>
> pfGStateMode(gstate, PFSTATE_ENFOG, FALSE);
>
> then fog punch through works but lights don't fade (they just cut off
> beyond the punch through range).
>
> Can any one tell me how to get both effects at the same time?
>
> I'm using an Infinite Reality (Onyx 2) with Performer 2.2 and IRIX 6.4
>
> --
> Paul Berridge
> Principal Development Engineer
> Equipe Electronics Ltd.
> 13 Liverpool Gardens
> Worthing, W. Sussex
> BN11 1RY
> ENGLAND
>
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>
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-- 
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