POV-Ray : Newsgroups : povray.binaries.images : Impending Disaster : Re: Impending Disaster Server Time
5 Jul 2022 23:42:58 EDT (-0400)
  Re: Impending Disaster  
From: Chris R
Date: 29 Jan 2022 00:50:00
Message: <web.61f4d4fa941abfdd4c33eaed5cc1b6e@news.povray.org>
"Chris R" <car### [at] comcastnet> wrote:
> Latest attempt at an indoor scene lit by sunlight from a window.  I ended up
> adding some extra lights for interest on the toys, too.
> This particular rendering was done with a pretty high anti-aliasing setting, but
> just the Radiosity_Fast setting for radiosity.  Even increasing it to
> Radiosity_IndoorLQ introduced terrible artifacts on all of my isosurfaces, and I
> haven't figured out how to eliminate them yet.
> The blocks, the plane, the train and tracks are all isosurfaces with wood
> pattern perturbations.  I experimented with a lot of combinations of low
> accuracy and high max_gradient, and used evaluation, but when I bump up the
> radiosity I end up with black splotches everywhere.  I may need to dig into the
> details of the radiosity settings to figure out how to tune them for a
> particular scene...
> -- Chris R.

Just a note on the artifacts.  Playing around with other radiosity settings,
(and even looking more closely at this one), the landing gear on the plane are
just simple cylinders, but I can see radiosity artifacts on them, too.  So, the
problem isn't limited to isosurfaces, although it is more prevalent there.

-- Chris R.

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