Optional ReadonlyfilterOptional ReadonlymaterialThe material index (0-65534) of a mesh's triangles, reported as BvhHit.material. Default: none.
Optional ReadonlystaticInstances that never move (TraceSceneInstance.static, for
mergeStaticInstances). true for all, or a function of the mesh. Default false.
Which meshes to include. Default: every mesh with triangles.