Ray Tracing

Goddamn all of these homework threads. Let's talk about something interesting.

I'm starting work on a ray-tracer for shits, /proggles/ Any tips on speed improvements? It's being written in C.
I know the show stopper (usually) is having to check each element in the scene and see if it has been intersected by a casted ray. Any ideas on improvements in that area?

>>41
You would likely never guess who I am, and it sounds like you've been in Clemson longer than I have. I'm beginning 300 level classes next semester. And anonymity is just fine.