This is a mirror of https://code.google.com/archive/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ with several fixes:
- Ported .sln and .vcxproj to VS2015 and CUDA SDK v8.0
- Fixed "No appropriate pixel format found!" error on start up on Windows 10
- Built a x64 version
Part of this code is used in GPULightmass.