These nodes can be used to retrieve custom user attributes from geometry or read custom particle channels, etc. 

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

Read float value from shape user data, at the current shading point on the surface.

Default

Output value to use if user data with the specified name is not available.

User Data Int

Attribute

Read integer value from shape user data, at the current shading point on the surface.

Default

Output value to use if user data with the specified name is not available.

User Data RGB

Attribute

Read RGB color from shape user data, at the current shading point on the surface.

Default

Output value to use if user data with the specified name is not available.

User Data RGBA

Attribute

Read RGB color and alpha from shape user data, at the current shading point on the surface.

Default

Output value to use if user data with the specified name is not available.

User Data String

Attribute

Reads the string from shape user data.

Default

Output value to use if user data with the specified name is not available.

 

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