From: Nathan Kopp
Subject: Re: Cornell Box images
Date: 18 Oct 2001 01:36:06
Message: <3bce6a46$1@news.povray.org>
"Michael Andrews" <M.C### [at] readingacuk> wrote...
> Cornell box images from original MegaPov, modified MegaPov and WinPovRay> 3.5b6. Also attached is the scene file.
Mike,
I found these images very interesting... I especially found it interesting
that the 3.5b6 image didn't show artifacts in the edges. I'm interested in
finding out which modification removed these artifacts (though I have a
guess). Was there any difference in settings between the MegaPov and 3.5b6
images?
-Nathan
Hi Nathan,
Nathan Kopp wrote:
> > "Michael Andrews" <M.C### [at] readingacuk> wrote...> > Cornell box images from original MegaPov, modified MegaPov and WinPovRay> > 3.5b6. Also attached is the scene file.> > Mike,> > I found these images very interesting... I especially found it interesting> that the 3.5b6 image didn't show artifacts in the edges. I'm interested in> finding out which modification removed these artifacts (though I have a> guess). Was there any difference in settings between the MegaPov and 3.5b6> images?> > -Nathan
If I remember correctly all I did was comment out the '#version' and
'ini_option' lines to run the scene under v3.5b6. I don't think anything
else was changed.
Under v3.5b6 and original MegaPoV the radiosity artifacts tend to show
up more with a low error_bound and low recursion, especially with
certain pathological scenes such as those with regular alternate light
and dark areas.
Bye for now,
Mike Andrews.
PS: if you'd like to see the changes I made I could send you the
modified 'radiosit.c' - the changes are all in the 'ra_gather' function.
ac