ID Mask Node

ID Mask Node.

The ID Mask Node creates a mask for a particular object or material in the render. It relies on the Object Index or Material Index render pass, which is only available when rendering with Cycles.

Katso myös

This node is superseded by the Cryptomatte Node. Cryptomatte is more versatile and is supported by both Cycles and EEVEE.

Inputs

ID Value

Input for the Object Index or Material Index render pass. Once a pass is enabled, it can be accessed through the IndexOB or IndexMA slot of the Render Layers Node.

Properties

Index

The index for which to create a mask. This index can be configured for objects at Properties ‣ Object ‣ Relations ‣ Pass Index, and for materials at Properties ‣ Material ‣ Settings ‣ Pass Index.

../../../_images/compositing_types_converter_id-mask_relations-panel.png

Object Pass Index.

Anti-Aliasing

Whether to smooth the mask edges.

Outputs

Alpha

A grayscale image that’s white where the object exists and black where it does not.

Example

In the example below, the left and right cubes are assigned a Pass Index of 1 and 2 respectively. We extract a mask for the left cube, then use it to turn that cube red with a Mix Node. The masks for the other Pass Indexes are also shown.

../../../_images/compositing_types_converter_id-mask_example.png

ID Mask node example.

Limitations