Ambient Contact Shading

AO is visibility of indirect illumination. It may attenuate indirect diffuse and environment/specular response. Direct light, emission, UI, and the tone-mapped frame remain invariant.

$threejs-choose-skills is an optional multi-system coordinator. Use $threejs-image-pipeline when AO shares depth, normals, velocity, history, or final-output ownership.

1. Choose the ambient-visibility branch

Use the first branch whose gate passes: