Adding a mask Average node
This node calculates the average between two masks. At each vertex, the value of the output mask is the average of the values of both input masks.
To add a node, right-click in the Graph Editor and select Create Node > Mask Composition > Average.
This node has no properties.
Linking to input masks
Link the Average node to two input nodes.
If both input masks do not have the same size or resolution, the size and resolution of the output mask is determined by the size and resolution of the first mask, and the second mask is enlarged or decreased so that its size corresponds exactly to the size of the output mask, before being compared to the first mask.
For example:
