In article <3e8b35c1@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

> Christopher James Huff <cja### [at] earthlinknet> wrote:
> > Your definition only works for 
> > camera rays, it is meaningless for reflected or refracted rays.
> 
>   If you read my article, I said that it would work in the same way
> as the alpha channel (+ua) works.

Ok, but that doesn't really help. It's still nothing like the 
"background" or "sky_sphere" features.

Would a post_process filter that used the alpha channel to overlay the 
image over another do what you want?

-- 
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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