I wrote a renderer (eventually became Krakatoa) for these and similar systems developed by "Dr" Baily: http://www.imagesavant.com/ http://www.imagesavant.com/

I wrote a renderer (eventually became Krakatoa) for these and similar systems developed by "Dr" Baily: http://www.imagesavant.com/ http://www.imagesavant.com/ Was used (and still used) on a bunch of films for Krytonite, dream sequences, plasma, etc. The longest render time I remember for getting rid of noise was over 24Hrs and involved +1B computed samples of the underlying functions.