This page gives information on the Cryptomatte Render Element.
||Render Settings window|| > Render Elements tab > Cryptomatte
The parameters for this render element appear in the Attribute Editor under Extra VRay Attributes.
Enabled – When enabled, the render element appears in the V-Ray frame buffer.
Deep output – Specifies whether to include this render element in deep images.
Filename suffix – The text added to the end of the rendered file, when saved as a separate file (e.g. myrender.cryptomatte.exr).
ID type – Specifies how the ID mattes are determined.
Node name – Creates mattes by node names.
Material name – Creates mattes based on the materials in the scene.
Node name with hierarchy – Creates mattes by node names and takes the node hierarchy into account for linked or grouped objects.
V-Ray user attribute – Creates mattes with objects that include the V-Ray User Attribute specified in the User attribute name field.
Asset (reference scene) name – Creates mattes based on Maya References made within the scene. Note: This does not create mattes based on Maya Assets, only file references.
Num levels – Specifies the number of levels for the render element, which determines the number of objects that can be distinguished per pixel. If multiple objects intersect at a single pixel, higher-order elements will contain non-zero results. The default value of 6 is normally enough for most cases.
User attribute name – Specifies a user-defined attribute for creating ID mattes when ID type is set to V-Ray user attribute.