This is a good style of test device for many shaders. You want to see how it reacts to light/camera angles. A bunch of balls surrounding a point light source gives you many different angles all at once.

Take a look at the front-most ball. There is a strange anomaly there, where the specular gets dark instead of light. I have to figure out what that is, before I give you guys this shader.

(Click for full size)

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)