Quote - The DS Shader Mixer has a Ray Is brick which can be used to control how a surface behaves according to the type of ray hitting it - I've been experimenting with that for things like lampshades, where I want some light to pass through without making it transparent and putting a camera behind a wall while still having the wall show up in reflections (I stilll have a puzzle to solve there). I don't see an equivalent in the docs for the Poser 6 Material Room, has something similar been added in 7 or 8?

I'm guessing about the specifics of what you've described, but I'd say no. There's no node that let's you launch any old ray you'd like. The only nodes that launch new individual rays that you can read the value out of are the Reflect and Refract nodes. These are constrained to obey the standard rules of reality, so they aren't all that useful for special effects, like SSS or seeing through specific things at a specific, user-defined angle.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)