Step Summary:
1. Download and Install the Poliigon Material Converter via the User Preferences menu (NOTE: The User Preferences menu has moved from the File menu to the Edit menu in more recent versions of Blender.)
2. Access the addon via the material tab
3. Set the root folder of your local texture library where your Poliigon materials are saved.
4. Select the required material and then, with the target object selected, assign the material to your object.
Documentation: The Poliigon Node Groups
Ubermapping node group
The Ubermapping nodeGroup is Poliigon's custom mapping node. The inputs are summarized below.
Scale - Adjust the scale of the texture.
Aspect Ratio - Adjusts the aspect ratio of the texture for non-square textures
(Automatically setup on material import.)Translate X and Y - Allows you to move the texture up, down, left and right.
Global Rotation - Adjust the rotation of your texture.
Mosaic Rotation and Noise - This is an advanced feature that is covered in Part 4 of the intro series.
Shading Node Group
We use a custom node group for importing our materials, all the textures are loaded within it. With the group selected you can press TAB to access the nodes insides if needed.
Parameters:
Roughness Adj. - Allows for manual tweaking of the roughness map. 0 is no adjustment.
AO Strength - Adjusts the intensity (multiply value) of the ambient occlusion texture. 0 is off, 1 is no adjustment.
Normal Strength - Adjust the influence of the normal map. 0 is off, 1 is intended texture default. Anything over 1 is multiplying the intensity.
Displacement Strength and Mid-Level - is covered in Part 3 of the intro series.