POV-Ray : Newsgroups : povray.beta-test : RC2: unpredictable artifacts when using the save/load radiosity mechanism : Re: [SOLVED] RC2: unpredictable artifacts when using the save/load radiosity mechanism Server Time
28 Sep 2024 11:01:36 EDT (-0400)
  Re: [SOLVED] RC2: unpredictable artifacts when using the save/load radiosity mechanism  
From: Warp
Date: 13 Jan 2011 07:17:55
Message: <4d2eed73@news.povray.org>
Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:

> > Until I prepare a minimal scene showing the problem, does anyone
> > (clipka, I suppose... ;) know if any of the recent radiosity changes
> > may have induced this behavior? ...just by reading the release notes
> > I don't see anything too evident (to me).

>    Ok, finally I found it... but took me a while to figure it out:
> forcing "always_sample on" on the loading pass fixed the random
> artifacts, or at least now they are not noticeable.

>    It was a bit unexpected, as it always worked fine to set it "on"
> during the save pass, and "off" during the loading pass... it even seems
> to make sense: on the second pass you would just want to load the data
> gathered on the first pass, without any extra calculation.

>    The only explanation that seems to make sense is that "always_sample
> off" was not working before, but now, with the recent change to "off" by
> default, I need to turn it on for the second pass to avoid artifacts...
> but I'm surely wrong, as usual.

  Perhaps if radiosity data is loaded, the setting could be turned on
automatically, if that's what normally should be done anyways. (If someone
wanted it to be turned off regardless, he could always do it explicitly.)

-- 
                                                          - Warp


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