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> Unreal Engine API Reference > Runtime > Engine > Engine > FLightmassPrimitiveSettings > bUseVertexNormalForHemisphereGather

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bUseVertexNormalForHemisphereGather

Typically the triangle normal is used for hemisphere gathering which prevents incorrect self-shadowing from artist-tweaked vertex normals.

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Syntax

uint32 bUseVertexNormalForHemisphereGather: 1

Remarks

Typically the triangle normal is used for hemisphere gathering which prevents incorrect self-shadowing from artist-tweaked vertex normals. However in the case of foliage whose vertex normal has been setup to match the underlying terrain, gathering in the direction of the vertex normal is desired.

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