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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---
Post a reply to this message
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I have been unable to duplicate this problem.
Win2k, AMD Athlon, 256MB
Can anyone else duplicate it?
-Nathan
"Trevor Quayle" <Tin### [at] hotmail com> 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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"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---
> >
> >
> >
> >
> >
>
>
Post a reply to this message
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From: Trevor Quayle
Subject: Re: Photon dispersion and Radiosity conflict?
Date: 26 Sep 2001 18:43:23
Message: <3bb25a0b@news.povray.org>
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I can confirm this on my home machine as well.
Ver.: v3.5 beta 4
O/S: Win98
Computer: Celeron 466MHz, 128M
I will post the two pictures in p.b-t.b. No changes were made between the
two renderings, except I ran cornell.pov included with the install (actually
I didn't complete the render, maybe that's where it comes from) .
-tgq
"Bob H." <omn### [at] msncom> wrote in message
news:3bb17492@news.povray.org...
> "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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From: Nathan Kopp
Subject: Re: Photon dispersion and Radiosity conflict?
Date: 30 Sep 2001 23:49:23
Message: <3bb7e7c3@news.povray.org>
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Again, I am unable to reproduce this on my computer. Could other beta
testers please try this and let me know if they can reproduce the bug. I
need more data about specific circumstances where this appears. Thanks in
advance for the help.
-Nathan
"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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From: Nathan Kopp
Subject: Re: Photon dispersion and Radiosity conflict?
Date: 1 Oct 2001 00:02:54
Message: <3bb7eaee@news.povray.org>
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"Nathan Kopp" <nat### [at] koppcom> wrote...
> Again, I am unable to reproduce this on my computer. Could other beta
> testers please try this and let me know if they can reproduce the bug. I
> need more data about specific circumstances where this appears. Thanks in
> advance for the help.
Actually, please test the next beta. It might be fixed.
-Nathan
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