- Label (this is the UI name)
- Tags (necessary to see RenderMan attributes and edit them during interactive rendering)
Set its type and color value.
Create a Houdini buildarray node to connect to the Utility Pattern on the PxrSurface material. Then connect a PxrMatteID Pattern node to the buildarray as shown below.
In your PxrMaterialBuilder Network, add a PxrMatteID VOP. Set the color as the user attribute above.
Connect PxrMatteID's resultAOV to PxrSurface's Utility Pattern.