The Multi Matte ID Render Element provides a mask for individual objects and/or materials, based on the Multi Matte IDs.
The Multi Matte ID Render Element contains no shading information at all, and only contains blocks of color that correspond to each Multi Matte ID. It uses the Multi Matte ID option available in the materials' properties.
UI Path: ||V-Ray|| > Render Elements > Multi Matte ID
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Image Added
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57%
Enable Deep Output – Specifies whether to include this render element in deep images.