> Have your tried working from the source code Mike provides via
> download-able zip at the bottom of the page:
> http://www.econym.demon.co.uk/isotut/real.htm ?

Ooooooh.  Tricksy you are, reading all the way down to the bottom of the page.
Stupid I was feeling, when I discovered that zip file already on my hard drive.
:(
I am, however, ever so grateful.
You've denied me my cross of agony and frustration.

> His Apple.pov example works without trouble for me in < 15 seconds. No
> AA at default povray resolution.

Wicked cool.  I, embracing the technology of The Ancients, am able to render it
in a mere 1:52. (4:27 with aa).

Thanks for the tip, WP!  While that gets me an amazing apple (really?  with only
TWO pigments??),  I'm still just as ignorant about the ray ---> intersection
output.  I also didn't see any notification in the message window about
max_gradient.  Is it there?  Nothing leapt off the screen, grabbed me around the
neck, and screamed, "LOOK AT ME!!!"   So I may have missed it.  :O

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