Beauty AOV / Cryptomatte material AOV Arnold supports Cryptomatte, an ID matte creation tool created by Jonah Friedman. It creates ID mattes automatically with support for motion blur, transparency, and depth of field. Names, object namespaces, and material names can be used to organize ID mattes in the scene. The following Cryptomatte AOVs are available under AOVs.
The steps are:
- Create the cryptomatte material and assign it to an arnoldAov shader slot.
- Set the cryptomatte material on an ArnoldGlobalSettings node, in Channel Definitions -> aov_shaders (add an entry and assign your cryptomatte material).
- Create ArnoldOutputChannelDefine and RenderOutputDefine nodes for each of the cryptomatte channels you care about: probably some of crypto_object, crypto_material and crypto_asset.
- Make sure to leave the type set to RGBA.
- Don't forget to set the channel on RenderOutputDefine to your channel created in ArnoldOutputChannelDefine.
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Material node: AOVs shader -> cryptomatte
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ArnoldGlobalSettings: add the cryptomatte shader to AOV shaders
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