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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Materials > API/Runtime/Engine/Materials/UMaterialExpressionVolumetricAdv-_1
Syntax
float ConstMultiScatteringEccentricity
Remarks
Only used if MultiScatteringEccentricity is not hooked up. Multi-scattering approximation: represents how much the phase will become isotropic for each successive octave. Valid range is [0,1], from anisotropic to isotropic phase.