uploading as we speak. 1hr 38 mins of mumbling, stumbling and one or two cuss words
It was sort of inspired by a recent thread on cg talk about render tree math nodes and mostly a mental ray version of the first material we create in the realtime shaders series i'm currently working on.
no shaders (in the biblical sense), no lights. just a null, a sphere and some basic vector math.
the math is a little dodgy in places but this was just meant to be a quick walkthrough of an excercise.
hope you enjoy.