AmbientOcclusion

This shader node calculates ambient occlusion for 3D scenes rendered into 2D using the RayRender node. AmbientOcclusion is not supported by ScanlineRender or PrmanRender.

Inputs and Controls

Connection Type	Connection Name	Function
Input	unnamed	Either: • The 2D image you’re using for the surface texture, or • Another shader node, such as Diffuse, Specular, or Emission. Adding several shader nodes one after the other allows you to produce more complex effects.

Connection Type

Connection Name

Function

Input

unnamed

Either:

• The 2D image you’re using for the surface texture, or

• Another shader node, such as Diffuse, Specular, or Emission. Adding several shader nodes one after the other allows you to produce more complex effects.

Control (UI)	Knob (Scripting)	Default Value	Function
samples	samples	10	Controls the number of rays used to detect if an object is occluded. Increasing the number of samples reduces noise and produces a better quality result, but increases render times.
spread	spread	1	Controls the angular spread around the normal in the range 0-1, where 1 is equal to 90° (the full hemisphere).
falloff	falloff	0	Sets the exponential falloff rate for the occlusion along the ray distance.
near clip	near	0	Controls the minimum (near) and maximum (far) occlusion distances sampled when calculating ambient occlusion.
far clip	far	10

Step-by-Step Guides

Object Material Properties