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The options above are default. You can find out more about the options by visiting the PxrCryptomatte page.
Note that after you create a Sample Filter, another empty connection will be created, allowing you to output Cryptomatte files using different criteria. For example, if you wanted one for per-object and another per-material, create another PxrCryptomatte for output and specify another name for the file.
For now, a separate OpenEXR is required to be output for each plugin, separate from your denoise or beauty EXRs. You can create a sequence by using the correct token, example: cryptomatte.<f4>.exr creates a rendered sequence with a padding of 4 spaces, cryptomatte.0001.exr
Below is an example in Nuke using our Robot Room Community Scene.
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Tell Cryptomatte you want to use: identifier:lpegroup
Or add the "Identifier Name" to the shape(s) from the RenderMan Attributes > Add > RenderMan
Tell Cryptomatte you want to use: identifier:name
Lastly, for groups (assigning to transform nodes) you can create your own user ID using "Transform Begin MEL" to the transform from the RenderMan Attribute menu. In the Cryptomatte Attribute field you would use the below example of "idlayers", this particular transform would write to the "fg" or foreground set of IDs.
| Code Block |
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RiAttribute "user" "string idlayers" "fg"; |
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When choosing identifier:name it will return the instance (transform)
When choosing identifier:object it will return the leaf level shape node.