"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.

I tried a number of combinations of higher-quality radiosity settings and am
still getting artifacts; the higher the count and lower the error_bound the
worse the artifacts.  In the image below, I took the radiosity settings from
before and just cut the pretrace_end size in half.  As you can see, this
introduced a noticeable, but relatively small artifact on the robot's
glass-covered dial.  I am running again with these same settings, but adding a
maximum_reuse of 0.05 and a minimum_reuse of 0.005 to see if that makes the
artifact go away or makes it worse.


-- Chris R.

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