"Anthony D. Baye" <Sha### [at] spamnomorehotmailcom> wrote:
> Christian Froeschlin <chr### [at] chrfrde> wrote:
> > Anthony D. Baye wrote:
> >
> > > Is this a bug, or am I missing something?
> >
> > It would be helpful if you could post a small sample scene.
>
> basically:
> [......]
> that's the gist of it.  The universal media whites out, even though the light is
> inside the sphere.

Running your code example in v3.6.1c, I wasn't able to reproduce the
problem--the scene is dark (as would be expected with the light being inside the
closed sphere.)

However, I constructed a somewhat similar CSG test scene of my own--and I'm
running into some decidedly odd behavior (different from your problem, though
they might be related.) Will post more about it ASAP, as soon as I can make
sense of it...

BTW, as has been noted, it's *much* faster to run the media with intervals 1,
samples 50 (for example)--actually 27-times faster than your intervals 40
samples 30,50! Another note: It seems that atmospheric media needs a rather high
samples count to look decent (plus, perhaps, some small amount of jitter as
well, to break up the visual banding.)

Also: Part of the documentation in section 3.3.2.1 "Atmospheric Media" seems to
be out of date (the part that says, "Pov-Ray cannot sample media along an
infinitely-long ray"); such media *does* show up even when there's no background
object whatsoever.

Ken

Post a reply to this message