I am working on an expansion for the object interior attenuation which
allows the user to specify an extra keyword 'fade_colour', so that the
attenuation tends to a specific colour, rather than just to black.  A sample
image and explanation of why this is good are posted in p.b.i.
My questions to you are:
Do you care?  (ie would you find this handy?)
Should I expand on this to allow the user to specify different fade rates
for red, green and blue?
Why are filter and transmit values attenuated in the shadow calculation code
(compute_shadow_texture)?
And why not in the visible texture calculation code
(compute_lighted_texture)?

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