Save and load lighting settings with Lightmap Parameters Assets

A LightmapA pre-rendered texture that contains the effects of light sources on static objects in the scene. Lightmaps are overlaid on top of scene geometry to create the effect of lighting. More info
See in Glossary Parameters Asset contains a set of values for the parameters that control Unity’s lighting features. These Assets allow you to define and save different sets of values for lighting, for use in different situations.

Lightmap Parameters Assets allow you to quickly create presets optimized for different types of GameObjectsThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary, or for different platforms and different Scene types (for example, indoor or outdoor Scenes).

Creating a Lightmap Parameters Asset

To create a new Lightmap Parameters Asset, right-click in the Project window and go to Create > Lightmap Parameters. Unity stores this in your Project folder.

Assigning Lightmap Parameters Assets

Scenes

To assign a Lightmap Parameters Asset to the whole Scene:

1. Open the Lighting window (Window > Rendering > Lighting)
2. Click the SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
   See in Glossary tab
3. Navigate to the Lightingmapping Settings.
4. Use the Lightmap Parameters drop-down to assign a default Lightmap Parameters Asset. This drop-down lists all available Lightmap Parameters Assets.

GameObjects

To assign a Lightmap Parameters Asset to a single GameObject, ensure the GameObject has a 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 Renderer or 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 component attached.

To assign a Lightmap Parameters Asset to a Mesh RendererA mesh component that takes the geometry from the Mesh Filter and renders it at the position defined by the object’s Transform component. More info
See in Glossary component:

1. In the Inspector, go to Mesh Renderer > Lighting
2. Enable Contribute Global Illumination
3. In the mesh Renderer component, go to Lightmapping > Lightmap Parameters.
4. Select an option from the menu. Select Scene Default Parameter to use the same Lightmap Parameters Asset that’s assigned to the whole Scene.

To assign a Lightmap Parameters Asset to a Terrain component:

1. In the Inspector, go to Terrain > Terrain Settings > Lighting
2. Enable Contribute Global Illumination
3. In Terrain Settings, go to Lightmapping > Lightmap Parameters.
4. Select an option from the menu. Select Scene Default Parameter to use the same Lightmap Parameters Asset that’s assigned to the whole Scene.