Unity GPU collision detection

GPU collision detection prototype written in Unity3D+HLSL.

32.000 spheres, smooth 60 fps.

Implemented article from GPU Gems 3:

https://developer.nvidia.com/gpugems/gpugems3/part-v-physics-simulation/chapter-32-broad-phase-collision-detection-cuda

WARNING: for GPU sorting I implemented RadixSort where I used new HLSL wave intrinsics for scan stage. So it's obligation to run this project on Nvidia GPUs because of lane size equal to 32.