These nodes can be used to retrieve custom user attributes from a geometry (e.g. Display Color) or read custom particle channels, etc. See the User Data tutorial for more details. 

 

The available built-in user attributes are listed in the respective user_data shaders.

It is also possible to read user data fields from volumetric shapes, allowing things like per-particle user data on volumetric spherical point clouds to affect the result of volumetric shading.

User Data Float

Attribute

Default

User Data Int

Attribute

Default

User Data RGB

 

Attribute

Default

User Data RGBA

 

Attribute

Default

User Data String

 

Attribute

Default