I'm making a lamp prop that I intend to be as functional as possible. That is, it'll have a working switch to turn on or off a specific point light located where the bulb would be. As part of this, I'd like for the shade of the lamp to have a proper translucent material that reacts appropriately to that point light (and ideally, also to only an ambient material light). The problem is I can't figure out or find how to do that sort of translucency properly. Any tips?