I've used _BitScanReverse (popcount-ish MSVC intrinsic) with a custom octree indexing scheme, where higher level voxels have more unset bits from the left. Neat

I've used _BitScanReverse (popcount-ish MSVC intrinsic) with a custom octree indexing scheme, where higher level voxels have more unset bits from the left. Neat stuff.