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Available only in Advanced mode.

Coat Amount – Specifies the blending weight of the coat layer. A value of 0 does not add a coat layer, while higher values blend the coat gradually.

Coat Color – – Determines the coat layer's color. A texture map can be used here.

Coat Glossiness – Available when the Surface Control option is set to Use Glossiness. Controls the sharpness of reflection. A value of 1.0 means perfect glass-like reflection; lower values produce blurry or glossy reflections. See the Coat Glossiness example below.

Coat Roughness – Available when the Surface Control option is set to Use Roughness. Controls the sharpness of reflection. A value of 0.0 means perfect glass-like reflection; higher values produce blurry or glossy reflections.

Coat IOR – Specifies the Index of Refraction for the coat layer.