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Lighting for Mobile Platforms

Lighting for Mobile Platforms

Supported Features

The features listed below are supported on mobile platforms:
  • Linear HDR lighting.
  • Directional lightmaps (normal is taken into account).
  • Distance field shadows + analytical specular on sun.
  • Image based specular lighting - nearest reflection capture is applied to each object, without parallax correction. So there can be seams between objects.
  • Dynamic objects receive lighting correctly but do not cast shadows.

Supported Light Types

Mobile platforms only support a subset of the light types available in Unreal Engine. These are:
TypeAdditional Info
Stationary Directional LightDirectional Light with Mobility = Stationary. Best quality.
Static Directional LightDirectional Light with Mobility = Static. Best performance (no distance field shadows or sun specular).
Static Point LightPoint Light with Mobility = Static.
Static Spot LightSpot Light with Mobility = Static.


  1. Disable any ambient cubemaps you have in your post process volumes (set intensity to 0).
  2. Place SphereReflectionCaptures in the areas that you want to capture lighting. You do not need a lot of these, just where there are unique surrounding lighting situations.
  3. Make sure your materials are setup for reflections: interesting normalmap, varying roughness, nothing plugged into specular, and metallic of 1 or 0.
Right now, each mesh component gets assigned to the closest reflection capture. That means there will be seams in reflections between objects, and sometimes a large mesh will use an undesirable reflection capture that happened to be close to the mesh's center.


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