What does BVH4 stand for?

4-way bounding volume hierarchy

BVH is a data structure commonly used in computer graphics and ray tracing to accelerate the intersection testing between rays and scene geometry. BVH4, as the name suggests, builds a binary BVH tree where each internal node has four children. This allows for efficient traversal of the tree using SIMD instructions, which can process multiple rays in parallel.

The BVH4 implementation in this repository is optimized for modern CPU architectures and uses a multi-threaded construction algorithm to further improve performance. The code is written in C++ and includes a command-line interface for constructing BVH4 trees from input geometry files.

Overall, this implementation is intended for use by researchers and practitioners in the fields of computer graphics and ray tracing who require a high-performance BVH construction algorithm.