Impossible. Try RT for doing limited recursion (i.e. A-star algorithm or some pathfinding AI).
But with these VTE stuff that's rumored to be in Durango can't the VTE help with the heavy lifting making it possible? Or am I overestimating how powerful VTEs are in regards to helping the GPU do ray tracing for the lighting? What I've skimmed from reading from knowledgeable guys is that the VTE would do the raytracing and the GI and that allows the GPU to do other things. From what I've read ray tracing the lighting hasn't been done in games only because they need special hardware lik the VTEs to do them and they're ally expensive.
I think its awsome MS got a VTE in their console if it's true.I just hope the games don't have that grain that raytracing demos I've seen on youtube do.If the nextbox does have a VTE that would put them ahead of GPUs on the market? Until they get VTEs anyway.
Errr another question, how many VTEs are needed?I hope epic can make raytracing lighting for UE4 thatd be awesome.