NEW IN R21
This is the outer limit of the search radius. Surfaces that lie farther away from the currently sampled position than defined here will not be included in the Ambient Occlusion calculation. The node will produce a white color as a result on these sides.
If enabled, the rays will not search for neighboring surfaces outside of the surface but will measure an object’s inner angles. The surface will then darken at peaks and sharp edges. Flat or slightly curved regions will have a brighter Ambient Occlusion.