3D Compositing with Action > Action: Masks >
Rendering the Mask

In the Output menu, you can set up preferences to render the mask. See Processing Multiple Outputs.

To make the mask visible in the output, enable Use GMask in the Render Options panel.

The mask output in the render is dependent on the settings of the Type box In the Output Options panel. Do any of the following:

- Set the Type box to Comp to reveal the background in the masked area in the render.
- Set the Type box to Matte or Media Matte to render a matte output of the scene or the selected object in the scene that reveals the colour, intensity and smoothing in the masked area.