> Orchid XP v7 wrote:
>> As best I can tell, the algorithm described just sounds like POV-Ray's
>> radiosity with an infinitely low error_bound. (I.e., always resample.)
>> But applied to *all* terms, not just diffuse illumination...
>>
>
> That's the key. I'm not too sure POVRay's radiosity gives an unbiased
> result even with all settings turned up to the best quality. If there is
> just one reflective surface in the mix I'm downright sure it does not...
>
> Even throwing photons in I believe there are situations POV will not
> handle correctly. Can we do a wall lighting one side of a room because
> it is itself lit by a light reflecting in a mirror?
"Light shines onto a white diffuse wall. Reflected light from the wall
creates caustics through a glass sphere. That is diffuse -> Specular
(caustics). I got the idea for this scene from a document by Henrik Wann
Jensen describing some difficult test scenes."
http://www.winosi.onlinehome.de/Gallery_t15.htm
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