> In any case, here's food for thought:> http://en.wikipedia.org/wiki/Dielectric_Shader
Doesn't POV already support the Fresnel equations, Snell's law and Beer's
law?
One thing that seems better than POV is that it supports direct
dielectric-dielectric interface, in POV you either have to go back through
air, mess with coincident surfaces, or have two interfaces.
