POV-Ray : Newsgroups : povray.beta-test : Photons bug? Server Time
1 Nov 2024 17:20:53 EDT (-0400)
  Photons bug? (Message 1 to 7 of 7)  
From: JRG
Subject: Photons bug?
Date: 5 Apr 2002 11:59:45
Message: <3cadd801@news.povray.org>
Render this scene more times. Each time I re-render it the rendering time differs
very much from the previous render instance.
Here are my results:
320x240
1) 5 sec.
2) 45 sec.
3) 1 min 18 sec.
4) 5 sec.
5) 5 sec.
6) 45 sec.

And so on. The slower the rendering the better the caustics look.

I also noticed that glass.pov in the incdemo folder now look wrong, very grainy. I
had rendered it with Beta 1 and looked right.


#version 3.5;

global_settings {
  assumed_gamma 1.0
  photons {count 50000 autostop 0}
}

// ----------------------------------------

camera {
  location  <0.0, 0.5, -4.0>
  right     x*image_width/image_height
  look_at   <0.0, 0.0,  0.0>
}

light_source {
  <-30,30,-30>
  rgb 1
}

// ----------------------------------------

plane {
  y, -1
  pigment { rgb 1 }
}

sphere {
  0.0, 1
pigment {rgbf <.95,.95,.95,.98>}
finish {ambient 0
    diffuse 0.05
    specular 1
    roughness 0.003
    reflection {.1,1 fresnel on}
    conserve_energy
}
interior {ior 1.5}
photons {target reflection on refraction on}

}

POV-Ray v3.5 Beta 15 Windows ME Athlon.




--
Jonathan.

Home: http://digilander.iol.it/jrgpov


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From: Kari Kivisalo
Subject: Re: Photons bug?
Date: 5 Apr 2002 12:24:58
Message: <3CADDDF0.845B6487@luxlab.com>
JRG wrote:
> 
> Render this scene more times. Each time I re-render it the rendering time differs
> very much from the previous render instance.

2nd render many times slower than 1st and better looking.
Win98SE 1GHz Athlon.


_____________
Kari Kivisalo


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From: Lutz-Peter Hooge
Subject: Re: Photons bug?
Date: 5 Apr 2002 12:37:38
Message: <MPG.1717ff3e668644589896f6@news.povray.org>
In article <3cadd801@news.povray.org>, jrg### [at] hotmailcom says...

> Render this scene more times. Each time I re-render it the rendering time differs
> very much from the previous render instance.

Heppens here, too.

AthlonXP 1700, Win98SE, beta15

Lutz-Peter


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From:
Subject: Re: Photons bug?
Date: 6 Apr 2002 16:18:32
Message: <3caf65a7.35388119@news.povray.org>
On Fri, 5 Apr 2002 18:59:15 +0200, "JRG" <jrg### [at] hotmailcom> wrote:

>Render this scene more times. Each time I re-render it the rendering time differs
>very much from the previous render instance.

Confirmed, render times (160x120) varying from 2 to 23 seconds over 10
renders.

Win/ME, PIII (1GHz), 512 MB

/Erkki


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From: Apache
Subject: Re: Photons bug?
Date: 10 Apr 2002 21:07:09
Message: <3cb4e1bd$1@news.povray.org>
3.5 beta 16 icl win32, win2k celeron (don't know about mhz, but I think it's
330, 350 or 400 or something like that), resolution 320x240

1) 27 sec
2) 2m 54s
3) 4m 13s
4) 20 sec
5) 22 sec
and varying after this....

--
Apache
http://geitenkaas.dns2go.com/experiments/
apa### [at] yahoocom


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From: Alf Peake
Subject: Re: Photons bug?
Date: 22 Apr 2002 19:47:07
Message: <3cc4a0fb@news.povray.org>
Just found this one all by myself :)
I've grabbed 4 different message windows, available if wanted.

Version 3.5.beta.RC2.msvc.win32, Win98SE, Celeron 500, 160 MB.

Alf


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From: Nathan Kopp
Subject: Re: Photons bug?
Date: 29 Apr 2002 22:35:51
Message: <3cce0307$1@news.povray.org>
"JRG" <jrg### [at] hotmailcom> wrote...
> Render this scene more times. Each time I re-render it the rendering time
differs
> very much from the previous render instance.

Fixed for next RC.

-Nathan


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