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• Create a PrmanOuputChannelDefine node for each AOV channel. This sets up the channel name for RiDisplayChannel.

• LPE will require a source to define the light path to collect. For example, Indirect Diffuse would be

color lpe:C<RD>[DS]+[<L.>O]

• Create a RenderOutputDefine node for each AOV file. This sets up the output file name and channel name be used for RiDisplay.

...

• Wire the PrmanOutputChannelDefine node into RenderOutputDefine to see the added channel in the RenderOutputDefine's channel drop down (MatteID0 in the example above).

Interface.SetAttr('prmanGlobalStatements.options.lpe.specular2', StringAttribute("Specular"))
Interface.SetAttr('prmanGlobalStatements.options.lpe.specular3', StringAttribute("RoughSpecular"))
Interface.SetAttr('prmanGlobalStatements.options.lpe.specular4', StringAttribute("Clearcoat"))

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