I might as well point this out here, in hopes that it will get fixed in 3.5.
There seems to be a major bug in SOR, where it looks like the rays are
tested for intersection as if the SOR was open, but the pixels are colored
as if it was closed. This happens in 3.1g, MegaPov 0.7, and 3.5 beta 1.
(Windows 98, Athlon 700, 256MB RAM) Here's some example code that
demonstrates the problem.

camera { location <10, 15, 15> look_at <0, 1, 0> angle 15 }
light_source { <2, 15, 5> color rgb <1, 1, 1> }
plane { +y, 0 pigment { rgb <1, 1, 1> } }
sor { 4, <2, -1> <2, 0> <2, 2> <2, 3> pigment { checker } }

Read my post in .general (with the same subject) for more information and
some small pictures. In particular, see the second one, which corresponds to
the code above. (I posted this before the beta came out.)

http://news.povray.org/povray.general/17877/

Anders K.

Post a reply to this message