Add noise to your terrain

Note: This tool is only available in the Terrain Tools package.

The Noise mask applies a pseudo-random output to your brush: a combination of a noise type and a fractal type. Adding noise to a brush adds variety to your brush set without adding brushes. Noise is a good way to create a non-uniform, natural look for your terrainThe landscape in your scene. A Terrain GameObject adds a large flat plane to your scene and you can use the Terrain’s Inspector window to create a detailed landscape. More info
See in Glossary, which you can then refine with other tools.

You can use noise masks to:

• Sculpt the terrain’s height, with:
  • The Noise tool: Similar to the Raise or Lower Terrain tool, but with a built-in Noise mask.
  • A Noise mask on any other height sculpting tool.
• Paint textures with a Noise mask.
• Base Terrain tiles on the noise as a height map.

You can save multiple noise settings, or share them with other users.

Tip: The Paint Details tool has its own noise definitions, which are available when you select the grass or detail meshThe main graphics primitive of Unity. Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info
See in Glossary. Refer to Grass and other details. The Paint Trees tool has its own settings, which include some noise options. Refer to Add trees to the terrain.

Additional resources

• Primary sculpting tools
• Advanced sculpting tools
• Change existing height with effects
• Transform terrain features
• Erode the terrain