Porting Intel Embree to ARM.

  Intel Embree is a high performance Ray Tracing kernel for x86/AMD64 architectures.In my experience it can be up to 10x faster than the typical BVH ray-scene intersection tester implemented in PBRT. But it only works on x86 CPUs. Why not porting so it runs on a ARM processor? It sounds fun, doesn't it? Start of the...