I've seen it best in The LEGO Movie Series. I want to emit light from inside an object. e.g. how they do fire. I want the object to maintain a plastic look. A translucent plastic.
I already have a good translucent plastic material. But placing a light inside results in a material I'm not happy with.
How can I get this the plastic to look right with a light inside it, while still emmitting light?
Edit: It also doesn't diffuse throughout the brick correctly.