This is a shading library addon for Blender 3D. It was made as an exercise for learning addon scripting inside Blender 3D.
Tutorial link: https://www.youtube.com/watch?v=8mSSCQ7LGVo&list=PLFtLHTf5bnym_wk4DcYIMq1DkjqB7kDb-&index=4&ab_channel=Darkfall