LOD for lighting

To reduce the latency of lighting updates in a large world, Enlighten can automatically reduce the lighting resolution when the viewer is far away. When lighting LOD is enabled, distant areas use a lower lighting resolution.

To reduce the latency of lighting updates in nearby areas, Enlighten normally updates distant areas at a reduced rate. When lighting LOD is enabled, distant areas can instead be updated at the full rate.

This option is experimental and has some limitations.


In World Settings, under Enlighten, the following parameters are used for lighting LOD.

Probe LOD

To set the distance from the camera at which Enlighten switches to a reduced resolution of probes, use the Probe LOD Distance property. When the distance is 0, Enlighten uses the highest resolution probes for all meshes.

This property has no effect when automatic probe placement is disabled.

Landscape LOD

To enable lighting LOD for a landscape actor:

  1. Select the Landscape actor and check Enable Landscape LOD
  2. Run the Enlighten precompute. 

By default, Enlighten automatically chooses the number of detail levels. You can also specify a minimum number of detail levels: in World Settings, under Enlighten, set the Minimum Landscape LOD Count before running the precompute.

To set the distance from the camera at which Enlighten switches to a reduced resolution for the landscape lightmap, use the Landscape LOD Distance property. When the distance is 0, Enlighten uses the full lighting resolution for all parts of the Landscape.