BVHallelujah

In the previous episode, our BVH traversal still had some issues in which much of the culling was not taking place. This made the traversal very inefficient and resulted in pretty, but slow bunnies. In fact, the high resolution bunny we had would not even load because the computer ran out of steam. After some further work, we were able to fix those issues which turned out to be some stupid logic errors. We are now able to run our high resolution bunny faster than the low resolution bunny ran before (~4 fps).