Ambient Occlusion

Computer Graphics · Real-Time Shading · ambient-occlusion.yaml

A scalar factor for how much of the hemisphere above a point is blocked by nearby geometry, multiplied into ambient light. Not physically justified, but it restores the contact darkening flat ambient loses.

• supersedescorrects · extends
• classifiesspecializes · part-of
• substitutes forapproximates · alternative-to
• depends onrequires · validates

Colour is the family; a dashed line is the second member of it.

This node

• approximatesis a cheaper stand-in for The Rendering Equationone visibility scalar instead of an indirect bounce

Referenced by

• specializesScreen-Space Ambient Occlusion is a specific case of thisestimated from the depth buffer at runtime

References

• Background — Ambient occlusion on Wikipedia