Table Of Contents
This node lets you reference an existing Redshift material and read out its Surface, Displacement, Environment, or Contour and to make this information available for any other Redshift material.
In the image below, on the right side we have two materials in the Material Manager, a Redshift Car Material and a basic Redshift Material.
We open up the basic material in the Node Editor and add the Reference node to the setup. By dragging the Car Paint material from the Material Manager to the Material slot of the Reference node, we gain access to that material and can reference it for use with the Material Blender.
The advantage of such a structure is that you can use one material and make other dependent materials from it.
The Reference node can also be used to bring Redshift material networks created in the XPresso shader graph into the new Redshift node editor. This makes it possible to use both shading graph types in the same scene. 
Choose which information you like to reference from the linked Material. You can choose between:
Link a material here to be used for referencing.