Interface SsaoEffectOptions

Depth offset in world units that stops a surface occluding itself

Raise it if flat surfaces show speckled shading; lower it if contact shadows vanish.

Spacing between blur taps, in texels of the occlusion buffer

Depths in front of the camera, [start, end] in world units, across which the occlusion fades out

Past end the effect skips its samples, which saves their cost and removes the speckle and dark bands it gives distant surfaces. null keeps occlusion at every depth.

Strength of the darkening

Depth gap in world units at which an occluder stops counting

An occluder counts less the further it is in depth from the shaded point, which keeps a near object from casting a dark halo on what's far behind it. Lower it if halos show.

Exponent on the occlusion term; higher values darken the occluded areas further

How far around each point the effect looks for occluders, in world units

Texels per logical pixel for the occlusion, like a pixi filter's resolution

'inherit' matches the scene, at View3D#resolution. On a high-DPI screen 1 is the usual choice: a quarter of the work at a device pixel ratio of 2. Fixed at construction.

Samples per pixel; the cost of the occlusion pass grows with it

Whether the effect makes the view write normalOutput, so it reads each surface's own normal instead of rebuilding a flat one from depth

The scene's normal is smooth across curves and carries normal-map detail, but it costs every opaque and glass pixel one more 4-byte write, which on a phone can cost more than it saves, and on WebGL it turns the view's MSAA off; see normalOutput. When another pass already makes the view write the normals, the effect reads them whatever this says. Fixed at construction.