"Alex" <ale### [at] alphacit> wrote in message
news:web.3d6e4624170d095415e7f0160@news.povray.org...
> If I'm correct, the Diffuse function gets called in order to gather light
> from sources, it calls do_light, which calls block_area_light.
> block_area_light calculates the shadow fraction, using multiple rays.
> However Diffuse_One_Light (called from Diffuse) uses the original light
> vector only.
>
> It seems to me that two avenues are open:
> 1. Use a single-ray to sample both color and shadow, leading to the need
of
> many pixel samples
> 2. Use a specialized version of Diffuse_One_Light which uses each one of
the
> shadow rays to calculate lighting
>


    Well, without knowing the source, or anything about the algorithms used,
one would assume that using the general algorithm of block_area_light in
Diffuse_One_Light would be the ideal solution - is this your option 2, or a
further option 3 ?
    Then, I would assume, all other lighting related effects would
automatically utilise the area_light options and optimisations (e.g.
adaptive sampling) that are present for shadow calculations, yes ?

--
Pandora/Scott Hill/[::O:M:C::]Scorpion
Software Engineer.
http://www.pandora-software.com

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