Contents
PxrMatteID outputs matte AOVs for compositing.
Add a user attribute for MatteID0.
Set its type and color value.
Add PxrMatteID
In your RIS Network, add a PxrMatteID VOP. Set the color as the user attribute above.
Connect PxrMatteID's resultAOV to PxrSurface's Utility Pattern.
Set up AOV for Output
