This node adds one terrain to another terrain at the locations defined by a mask.
The Sum using mask node works as follows:
To add a node, right click in the Graph Editor and select Create Node > Terrain Composition > Sum using mask.
Link the Sum using mask node to three input nodes.
At each vertex:
Both input terrains and the input mask can have different sizes and resolutions. The size and resolution of the output terrain are determined by those of the first terrain and the second terrain and the mask are enlarged or reduced so that their size corresponds exactly to the size of the output terrain.
Watch our Sum using mask video tutorial.
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