Ray traced occlusion culling in point-frag

[bouliiii]

Hello all,
I implemented a ray tracing version of the zbuffer occlusing technique. Basically, you compute a small zbuffer and you use it to cull the draw calls you send to your GPU. Pretty simple. I am using the DynBVH technique for that. I wrote a lengthy blog post here:
http://bouliiii.blogspot.com/2011/11/ray-traced-occlusion-culling-in-point.html
If you are curious, the code is here:
http://code.google.com/p/point-frag/

Cheers,
Ben