This page describes parameters under the "Visuals" foldout that are specific to SSAO mode.
Radius
Defines the maximum distance in meters for occluder search.
For HDRP this roughly corresponds to the Radius of the SSAO override.
For URP this roughly corresponds to the Radius of the native SSAO renderer feature.
Unlike GTAO or RTAO, SSAO performs occlusion search across nearby pixels over multiple passes, where each consecutive pass increases the search distance. The Radius slider controls the number of passes. Since SSAO is not bound by world-space units, its visual output may vary across different resolutions.
Performance impact: moderate
Thickness
Control the thickness of the surfaces on screen. Because the screen-space algorithms can not distinguish thin objects from thick ones, this property helps trace rays behind objects, treating them uniformly.
