Okay… this is nuts. After doing a bunch of lighting tricks to no avail, I’ve decided to ask you peeps.
I have a difficult to light character that I’m modeling for someone (the character is owned by http://shagia.deviantart.com ), and here’s render of what I have done so far. It sucks to have to do readiosity by doubling the head and reversing the normals… but that’s what I’ve done.
I also made a crazy set of nodes that, using the camera angle, could detect whether the camera was looking head on or looking straight through a normal, and then reverse it. If you want to see that, then I’ll show ya’ll, as some of you might find the trick handy (it uses a dot product, rounds it out, and then squeezes the number to be either -1 or 1… then, all that happens is that you mult with the camera. If the camera and normal result in a positive dot product, you know that the result is 1, so you negate the normal. The same goes for the other way around. What you end up with is a crazy multiplier filter that negates all normals that are facing away from the camera)
Neither solution has worked entirely. In the case of doubling the head and reversing its normals and using the radio, it’s just grotesque and also the eyes for some reason are penetrating the first layer of the head and creating the glowing spots on the skin that you see… so ICK!
The other solution using tricky nodes doesn’t work because then every single part of the body is lit up by the blue light. DOUBLE ICK.
Does anyone have a trick to get double sided materials to work? Right now, I have tried a bazillion things, and looked high and low… and I CANNOT FOR THE LIFE OF ME find a way to get double sided to actually be… double sided. The lighting just refuses to light both sides of this guy’s head.
The ref image shows you what the guy is supposed to look like… so no, I have a good bit left to do… but I’m not going to do it if blender isn’t going to work. grimace
Fixed a few of the holes. Below is an updated render, with clothe and all. I’m going to do the eyes and such next. Thickening the skull, changing IOR, and other things helped a lot.