In a free moment I was playing around with the iridescent coating feature of my PhysicalMaterial shader when I noticed I hadn’t posted an example of this feature yet, so here we go.
Notice the soap-like coating around the statue. This somewhat uncommon optical phenomenon is called iridescence and is, to quote Wikipedia, “caused by multiple reflections from multi-layered, semi-transparent surfaces in which phase shift and interference of the reflections modulates the incident light (by amplifying or attenuating some frequencies more than others)”.
Right.
Anyway, I built it into my shader because Maxwell’s shading system offers the feature and that’s what my shader is based on.
Not that I have the slightest idea what I would personally use this effect for at the moment, but I’m sure it has its uses in some productions.
