1. Epic GamesDeveloper
  3. VolumetricLightmapSphericalHarmonicSmoothing

VolumetricLightmapSphericalHarmonicSmoothing

Controls how much smoothing should be done to Volumetric Lightmap samples during Spherical Harmonic de-ringing.

Unreal Engine C++ API Reference > Runtime > Engine > GameFramework > FLightmassWorldInfoSettings

Syntax

UPROPERTY (BlueprintReadWrite, EditAnywhere, Category=LightmassVolumeLighting,  
          Meta=(UIMin="0", UIMax="1"))  
float VolumetricLightmapSphericalHarmonicSmoothing

Remarks

Controls how much smoothing should be done to Volumetric Lightmap samples during Spherical Harmonic de-ringing. Whenever highly directional lighting is stored in a Spherical Harmonic, a ringing artifact occurs which manifests as unexpected black areas on the opposite side. Smoothing can reduce this artifact. Smoothing is only applied when the ringing artifact is present. 0 = no smoothing, 1 = strong smooth (little directionality in lighting).

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