In article <3a0b1a3f@news.povray.org>, "Thorsten Froehlich" 
<tho### [at] trfde> wrote:

> Very simple:  Procedural texture are based on pseudo-random number
> generators.  While you get the same sequence for every render, you do not
> get a reverse sequence when you render from bottom to top.

I always thought this only affected FRAND(), and that patterns based on 
Noise() would always give the same result for every point...hmm...

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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