Appearance Material Options for xPDM Import

The surface aspect represents changes in the appearance behavior of the material depending on its scale.

Surface shards	Description	Value
Base Color	Defines the spectrum of the diffuse illumination.	ColorValueRGB: a sequence of three attributes, one for each color channel, containing an integer value between 0 and 255.
Glossiness	Defines the micro-details on a surface.	Percentage
Transparency Glossiness (optional)	Defines the perturbation of the transparency when light passes through the surface.	Percentage

The reflectance aspect represents the amount of light reflected by the surface of a material. It is the way the light behaves when it strikes the interface between two media. IOR and Specular Reflectance cannot be used simultaneously.

Reflectance Shards	Description	Value
Specular Color	Defines the spectrum of the specular illumination.	ColorValueRGB: a sequence of three attributes, one for each color channel, containing an integer value between 0 and 255.
IOR	Defines the amount of light reflected by the surface.	IOR
Specular Reflectance	Defines the amount of light reflected by the surface.

The volume aspect represents the behavior of the light in a material. The following parameters are optional.

Volume Shards	Description	Value
Transparency	Defines the amount of light that passes through a surface.	Percentage
Dispersion	Defines the splitting of light that passes through a surface.	IOR
Absorption	Defines the colors totally absorbed within a homogenous medium.	AbsorbtionColor