I wasn't referring particularly to your scene. But you can  be sure that a
max_trace_level of 5 in a radiosity scene with at least ONE reflecting
object isn't enough in most cases. I don't know why but it often causes
polka dots.
I would increase it to at least 10. It shouldn't be slower.

--
Jonathan.
"Xplo Eristotle" <inq### [at] unforgettablecom> ha scritto nel messaggio
news:3C005D7D.3F8D7C7A@unforgettable.com...
> JRG wrote:
> >
> > It does have. Try setting it to 2 and you'll see (your recursion limit
will
> > be lowered to 1).
> > Max_trace_level 1 disables radiosity at all...
>
> So, assuming I've left it at the default of 5, and have a
> recursion_limit of 2, what effect would it have again to raise the
max_trace_level?
>
> -Xplo

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