I know the difference, I was providing it as a grand work around to the general
problem. If you already have the image ready, you can add it to the scene with
my technique and not worry aobut the alpha channel. I'm not savvy enough in
programming to understand how POV-Ray does the Anti Aliasing and alpha channels,
so I fake it.

Josh

Rune wrote:

> "Josh English" wrote:
> > I have a method for doing this, btw,on my site.
> >
> > The demonstration is a bit dull:
> >
> > http://www.spiritone.com/~english/cyclopedia/background.html
>
> It's a very nice technique, but not really related to the alpha channel.
> Using the alpha channel lets you make a background for your POV-Ray image
> *outside* POV-Ray, while your technique allows one to add a background image
> *inside* POV-Ray. There's a big difference.
>
> Greetings,
>
> Rune
> --
> \ Include files, tutorials, 3D images, raytracing jokes,
> / The POV Desktop Theme, and The POV-Ray Logo Contest can
> \ all be found at http://rsj.mobilixnet.dk (updated August 7)
> / Also visit http://www.povrayusers.org

--
Josh English -- Lexiphanic Lethomaniac
eng### [at] spiritonecom
The POV-Ray Cyclopedia http://www.spiritone.com/~english/cyclopedia/

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