I'm using POV-Ray to generate a synthetic lightfield for a school project.
I've run into an issue where I wasn't getting bounced light where I
expected it.  After a commenting out a few different things, it seems that
the specific problem involves radiosity samples through objects that are
refractive and reflective with conserve_energy active.

here's renders with conserve_energy on and off:
http://www.inio.org/~inio/radiosity_conserve.gif

and here's the scene file:
http://www.inio.org/~inio/radiosity_conserve.pov

Can this be fixed in the scene file?  If not, is there a source tweak that
could fix it?  I've poked around a bit, but finding the right loop in that
mass of code has repeatedly proven tricky.

If you're wondering, in the real application the "light source" is a sphere
around the scene with a custom pigment on it that samples our incident
lightfield and the scene is a bit more creative ;).

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