MetalByTutorials/12-environment/projects/resources/Specular/Notes.md

Specular Texture Generator

This app generates specular textures from pngs.

In ViewController.swift, load up six faces of a cube texture, and name them posx.png, negx.png etc. Change the dimensions to be the size you require, and change the number of mipmap levels.

Create a directory called specular in Documents to hold the generated textures.