[comp.graphics] Help

rice@swatsun (Dan Rice) (06/08/87)

     Has anyone out in netland successfully implemented the Cook-Torrance color
model in either scanline or ray-tracing software?   I am trying to write a
ray-tracer, and would like to incorporate it.  I've seen some things that seem
to imply that it is difficult or impossible to use it in a ray-tracer.  If so, 
why?  Any help would be appreciated.