OptionalfactorStrength of the coat, from 0 (none) to 1
OptionalnormalStrength of the coat normal map's bumps
OptionalnormalNormal map for the coat alone, green up like Material3DOptions#normalTexture
Pass it here to have one; to add one later, clone the material with it. Without it the coat follows the geometry's normals, not the base normal map, and costs less.
OptionalroughnessRoughness of the coat, independent of the surface underneath
OptionalroughnessMap whose green channel scales roughness
OptionaltextureMap whose red channel scales factor
Options for a Material3D's
clearcoatgroup (KHR_materials_clearcoat): a clear lacquer layer on top, as on car paint or varnished woodExample