This material assigns two different materials on the front and back sides of the surface. Additionally, the materials can be mixed.
Front material
Face side material.
Back material
Back side material.
Blending
Enables mixing of two materials. The parameter determines the proportion of the opposite material in the mix.
Blend map
The proportion of the opposite material in the mix can be additionally set by this texture map (the Blending values and the values from the map will be multiplied).