Builds first trees for many meshes at once. SceneTrees' only GPU builder is H-PLOC (GpuFirstTrees); tests give a stand-in.
SceneTrees
Starts building every request's tree; see GpuTreeBuilds. Needs prepare to have finished.
prepare
Optional
Compiles the builder's kernels.
Builds first trees for many meshes at once.
SceneTrees' only GPU builder is H-PLOC (GpuFirstTrees); tests give a stand-in.