Bullet physics test 1 in Brigade 2

I've made a very simple real-time, interactive Bullet physics simulation of a bouncing light-emitting cube, rendered using the Brigade 2 path tracer with 8 spp per frame on a low-end GTS 450 (render resolution is 320x240 to keep the framerate acceptable). The simulation can be paused and resumed and the image converges when nothing moves. The scene contains 12733 triangles.

Video:

http://www.youtube.com/watch?v=stahUUH8yIE