Material presets offer a quick and easy way to create most of the materials you will need. The available types are:
Depending on the preset type you choose, additional controls will appear in the editor.
The Bitmap Based preset has been designed to offer an easy way to bring PBR materials inside Thea for Rhino. You can either:
The Substance 3D preset allows one to load Substance 3D materials (.sbsar) in the Thea Material editor. Simply click on the folder icon and load a .sbsar file. The material editor will display generic settings allong with custom parameters of the Substance 3D material.