BuildBVH

Benchmarks EBGeometry’s BVH construction strategies. It builds a BVH over a random point cloud with each available strategy – top-down (centroid, SAH, and midpoint partitioners), bottom-up along the Morton, Nested, and Hilbert space-filling curves, and ClusterSAH – and reports the build time for each (see Construction). For most strategies it times two ways of reaching a queryable PackedBVH: the traditional TreeBVH-then-pack() path, and PackedBVH’s direct constructor, which packs the primitives straight into the flat, queryable layout without building a TreeBVH first (see Direct construction (no TreeBVH)). It times build only, not query performance or tree quality.

The source for this example is at Examples/BuildBVH/main.cpp. See Building for how to compile it with CMake, GNU Make, or a direct compiler invocation.

cd Examples/BuildBVH
./BuildBVH.ex