"Nathan Kopp" <nat### [at] koppcom> wrote in message
news:3bb157c7$1@news.povray.org...
> I have been unable to duplicate this problem.
> Win2k, AMD Athlon, 256MB
>
> Can anyone else duplicate it?

Can't.  Renders as should.  WinME, PIII 800MHz, 512MB.

Bob H.

> "Trevor Quayle" <Tin### [at] hotmailcom> wrote...
> > Ver.: v3.5 beta 1
> > O/S: Win2000
> > Computer: P4 1.4GHz, 256M
> >
> > I'm not sure how to explain this bug, I came across it by accident.
> >
> > If I first run the following scene (with photons and dispersion) it
> renders
> > as expected with the photons creating a prism effect.  Now the tricky
> part,
> > run a different scene file with radiosity (e.g.. cornell.pov included
with
> > the Beta install)
> > and then go back and try rendering the following scene again.  Now the
> > photons are not affected by the dispersion.  If you close and reopen 3.5
> it
> > renders fine again.
> >
> > -tgq
> >
> > The scene (I've tried to make it as short as possible):
> >
> > ---start scene---
> >
> > global_settings{photons{spacing 0.01 count 100000 autostop 0}}
> >
> > camera{
> >   direction<0,0,1>
> >   up<0,1,0>
> >   right<4/3,0,0>
> >   location <0,7,-25>
> >   look_at  <0,7,0>
> > }
> >
> > light_source{0 color <1,1,1>*3 translate <0,15,0>}
> >
> > difference{
> >   box{<-16,-1,-16><16,16,16>}
> >   box{<-15,0,-17><15,13,2>}
> >   box{<-.05,12,2><.05,15,-.5>}
> >   texture{
> >     pigment{color <1,1,1>}
> >     finish{ambient 0 diffuse 0.7 brilliance 0.4}
> >   }
> > }
> >
> > difference{
> >   box{<-8,5,-10> <4,10,10>}
> >   plane{-y 0 rotate z*-75 translate<0,7,1>}
> >   material{
> >     texture{
> >       pigment{rgbf<1,1,1,1>}
> >       finish{conserve_energy  reflection {0 1 fresnel on}}
> >     }
> >     interior{ior 1.55  dispersion 1.1}
> >   }
> >   photons {target  refraction on  reflection on  collect off}
> > }
> >
> > ---end scene---
> >
> >
> >
> >
> >
>
>

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