Lightmap Resolution


Is there a way of changing the resulting resolution of the lightmap for a map in UE4?
We’re seeing nice 4k textures when profiling our game GPU and would like to investigate making them smaller for some maps where having lighting textures that large aren’t needed.

Many thanks

Lightmap and shadowmap atlases are controlled by PackedLightAndShadowMapTextureSize in UWorldSettings, whose default is 1024.


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Hi Ben,
Sorry for the delay! Been away first part of the week. More than happy to have it copied over to the public AnswerHub.

All the best