In article <3e988cf3$1@news.povray.org>,
 "Apache" <apa### [at] yahoocom> wrote:

> I've always been interested in the light-bleeding (a bit halo like) effect
> that one can sometimes when there is something in the air (like dust or smog
> or fog or whatever). At this moment the effect of media is only in direct
> light. (Except for radiosity that takes media into account).

The effect is minimal in most situations, it is only really visible when 
you have a thin, bright beam or unusually dense media. One thing that 
might really benefit is fire/smoke, with the smoke reflecting light from 
the fire. The effect isn't useless, and will probably be implemented 
eventually, but it isn't extremely useful and ordinary single-scattering 
media is still slow.


> I would be very interested if media would be able to take radiosity or
> scattered light into account! I won't mind if it's slow, I'm very patient!
> (Most of my renders take more than days heheheh)

I thought you were interested in it for the increased speed...

Anyway, I've been looking at the paper a little more, and it looks like 
the Schlick function is a separate enhancement from the rendering 
algorithm, having a similar curve to the Henyey-Bernstein function while 
being simpler to compute. It might give some speed increase, though I 
would bet only a small one because the lighting calculations have a 
greater speed impact in my experience.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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