UsdPreviewSurface

MDL Identifier: UsdPreviewSurface

Description: Material Graph friendly native MDL material based on Pixar’s UsdPreviewSurface Specification. For use in building custom UsdShade graphs.

Display Name	Type	Parameter	Default	Description
diffuseColor	color	diffuseColor	color(0.18,0.18,0.18)	The color of the material
emissiveColor	color	emissiveColor	color(0.0,0.0,0.0)	The emissive color of the material
useSpecularWorkflow	bool	SpecularWorkflow	False	Uses Specular workflow instead of Physical workflow
specularColor	color	emissiveColor	color(0.0,0.0,0.0)	Tint color for specular reflections
metallic	float	metallic	0.0	A range from 0-1 describing whether the surface is Dielectric or Conductive 0 is Dielectric (non metal) 1 is Conductive (metallic)
roughness	float	roughness	0.5	The amount of reflectivity a surface has. Range is 0-1 0 = perfectly reflective surface 1 = no reflectivity
clearcoat	float	clearcoat	0.0	Adjusts how “thick” the clearcoat is.
clearcoatRoughness	float	clearcoatRoughness	0.01	The amount of reflectivity a surface has. Range is 0-1 0 = perfectly reflective surface 1 = no reflectivity
opacity	float	opacity	0.5	The opacity of the surface in a range from 0-1 0 = No Opacity or “See Through” 1 = Fully Opaque
opacityThreshold	float	opacityThreshold	0.0	The opacity threshold is a clamp that cuts opacity to 0 if opacity is below the threshold amount.
ior	float	ior	1.5	Incidence of Refraction controls how much the light is “bent” when passing through a surface
normal	float3	normal	float3(0.1,0.1,0.1)	Sets the normal of the surface
displacement	float	displacement	0.0	Shifts the rendered surface by the displacement amount
occlusion	float	occlusion	1.0	Artificially adds shading to the surface