This section concerns both normal maps and standard bump map. It allows control of the feature on both the coating layer and the base layer.
Type
Specifies the type of mapping desired – Bump Map, Normal Map or Displacement Map. In the case of a Normal Map, a color is expected in as a value, it can be encoded in the style or DirectX or OpenGL. In case of Bump Map or Displacement Map the shader will only consider the R value. Displacement maps can be interpreted as having their center value (the one that produces no effect) at 0.0 or 0.5.
Value
A colour input specifying bump direction (Normal Map) or intensity (Bump Map / Displacement Map).
Intensity
Specifies how intense is the the bump mapping effect. A value of 0 means that normals will stay unchanged whereas a value of one will affect normals with full range.
Layers Affected
Select to apply bump to the coating, base layer or both layers (default). Has no effect when Type is set to Displacement Map
