Jan Huewel 1/5/2022

Vertex can be setup to output Key and Fill. To achieve this you would make sure that both surfaces show the same part of your canvas and one surface gets a Key Mask video effect applied in order to output the black and white mask

Daniel Miletic 3/25/2022

Applying the key mask video effect to the surface, the assigned output shows all time full white.

If the key mask is applied to the clipcontainer it works like expected.

Or am I doing something wrong? ;-)

Jan Huewel 3/25/2022

Please make sure that the surface background color is set to transparent for this fx to take effect

Daniel Miletic 3/25/2022

Okay, that makes sense. Thanks, Jan!