visibilityBitmask property
Models occluders as surfaces with a constant thickness instead of an infinitely thick height field, by marking occluded sectors of the hemisphere in a per-slice bitmask. Cuts the over-darkening that thin geometry (wires, leaves, thin frames) casts at the cost of losing the cosine weighting of the closed-form arc integration. Only used by AmbientOcclusionMethod.groundTruth.
Implementation
bool visibilityBitmask = false;