Description: This is a C implementation of the BMRT greenmarble shader 
Description: written by Larry Gritz. 
Author:  Chris Lynch
Email: chris@artdreamdesigns.com
Website: http://www.artdreamdesigns.com
License: 


The main difference is that Renderman functions such as specular,
ambient, etc. have been removed. This plugin will return only color values.
It could also be noted that this shader is not actually only for green marble. 
The controls actually allow one to create a marble with a mixture of any two
colors plus a third color for the veins. The controls should be pretty self
explanatory. 
     This plugin relies very heavily on the RMoper.h header file which is included in the zip file, along with the compiled dll and the C source.