F0

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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Materials > API/Runtime/Engine/Materials/UMaterialExpressionSubstrateSimp-

Syntax

UPROPERTY ()  
FExpressionInput F0  
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Remarks

Defines the color and brightness of the specular highlight where the surface is facing the camera. Each specular contribution will fade to black as F0 drops below 0.02. (type = float3, unit = unitless, defaults to plastic 0.04)