One of the biggest changes introduced in Unity 5 is physically-based rendering, which is also known as PBR. Previous chapters have repeatedly mentioned it without revealing too much about it. If you want to understand not only how PBR works, but how to make the most out of it, this is the chapter you should read.
In this chapter, you will learn the following recipes:
Understanding the metallic setup
Adding transparency to PBR
Creating mirrors and reflective surfaces
Baking lights in your scene