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I am trying to figure out what is happening with this setup (please see attached image). The material is specular and the front and back parts of the sign are distinct from one another in the UV space. Yet, while the front of the sign looks fine, the front is projecting onto the back for some weird reason.
If I do the material as diffuse or glossy, no problem. This is only happening with specular material.
I think I see what happened, maybe. In C4D, you can select only visible polys on the surfaces facing you, or select everything underneath as well. There are two backlit pieces of plexi in the sign, and those are about .5" thick. One in back and the other in front. When I sampled the front, I accidentally had selected the option to select everything including all polys behind the visible surface. That meant it picked up both faces of the front piece of plexi, and the back two as well. But when I selected only the back plexi surface visible from the other side, I correctly selected the option to only select visible surfaces. Therefore, I had separated out the back most surface of the rear piece of plexi, but the other three surfaces were still overlaying each other in the UV map. Errrgggg!
