The Sheen layer can simulate the grazing coloration or rim lighting in fabrics like velvet. It can also simulate layers of dust. 


Sheen Layer


Figure 1: Sheen layer parameters

 

Sheen Layer Parameters

Enabled - Determines whether the material layer contributes to the overall layered material system.

Sheen - The Sheen layer's color.

Roughness - The Sheen layer's roughness. Higher values spread the sheen color to larger parts of the surface.

Affect Roughness - The percentage of roughness affecting subsequent layers' roughness.

Bump - Simulates a relief by using a Greyscale texture interpreted as a Height map for the layer.

Bump Height - Determines the height represented by a normalized value of 1.0 in the bump texture. A vaule of 0 disables the bump map and a negative value will invert the bump map.

Normal - Distorts Layer normals by using an RGB image.

Layer Opacity - Controls the Layer opacity with a Greyscale texture.