Efficient incoherent ray traversal on GPUs through compressed wide BVHs
Henri Ylitie, Tero Karras, Samuli Laine · 2017
We present a GPU-based ray traversal algorithm that operates on compressed wide BVHs and maintains the traversal stack in a compressed format. Our method reduces the amount of memory traffic significantly, which translates to 1.9--2.1× improvement in incoherent ray traversal performance compared to the current state of the art. Furthermore, the memory consumption of our hierarchy is 35--60% of a typical uncompressed BVH.