Graham Philipson · Lead Audio ProgrammerYeah, I mean, it can be done. You can ray trace and pick up the materials from the reflections, and you can figure out what effect those materials should have. A bumpy material should make the sound more diffuse, whereas a solid reflective surface would do exactly what you expected; it'd be very reflective in terms of audio as well. But that's the kind of thing... in the audio team, tech like that would always be something that hangs off the visual tech. So really, we've got to have the ray tracing on the visuals before we can think about having it on the audio. That's where we are.