Follow @AlanZucconi Part 1, Part 2, Part 3, Part 4, Part 5, [download the Unity3D package] Why is it colder at the poles and hotter on the equator? This question, which seems completely unrelated to shaders, is actually fundamental to understand how lighting models work. As explained in the previous part of this tutorial, surface shaders use a … Continue reading Physically Based Rendering and lighting models in Unity3D