Biome Merge
The Compositor. Combines two complete biome channels (Base and Layer) into one, using a float mask to decide which one to use at each tile.
Ports
| Port | Type | Description |
|---|---|---|
| Base Biome |  Biome | The background biome distribution. |
| Layer Biome | Biome | The foreground biome distribution (applied where Mask > 0.5). |
| Mask |  Float | The control mask used for blending. |
| Output | Biome | The merged result. |
Details
This node is the biome-equivalent of the Blend node. It allows you to generate two completely different world layouts (e.g., a "Surface" world and a "Subterranean" world) and merge them together based on a heightmap or noise field.
Potential Use Cases
- Islands on Water: Generate a "Deep Sea" biome layout and an "Archipelago" layout. Merge them using an "Islands" mask to ensure that the ocean biomes only appear in the gaps between landmasses.
- Dimensional Rifts: Use a highly detailed noise mask to "punch through" one biome layout into another, creating alien-looking patches of a different world.
- Scenario Layers: Overlay a "Ruined Kingdom" biome layout on top of a "Natural Forest" layout using a distance field around a castle ruins point.