Book Image

Unity 5.x Shaders and Effects Cookbook

By : Alan Zucconi
Book Image

Unity 5.x Shaders and Effects Cookbook

By: Alan Zucconi

Overview of this book

Since their introduction to Unity, Shaders have been notoriously difficult to understand and implement in games: complex mathematics have always stood in the way of creating your own Shaders and attaining that level of realism you crave. With Shaders, you can transform your game into a highly polished, refined product with Unity’s post-processing effects. Unity Shaders and Effects Cookbook is the first of its kind to bring you the secrets of creating Shaders for Unity3D—guiding you through the process of understanding vectors, how lighting is constructed with them, and also how textures are used to create complex effects without the heavy math. We’ll start with essential lighting and finishing up by creating stunning screen Effects just like those in high quality 3D and mobile games. You’ll discover techniques including normal mapping, image-based lighting, and how to animate your models inside a Shader. We’ll explore the secrets behind some of the most powerful techniques, such as physically based rendering! With Unity Shaders and Effects Cookbook, what seems like a dark art today will be second nature by tomorrow.
Table of Contents (16 chapters)
Unity 5.x Shaders and Effects Cookbook
About the Authors

Baking lights in your scene

Rendering lighting is a very expensive process. Even with state-of-the-art GPUs, accurately calculating the light transport (which is how light bounces between surfaces) can take hours. In order to make this process feasible for games, real-time rendering is essential. Modern engines compromise between realism and efficiency; most of the computation is done beforehand in a process called light baking. This recipe will explain how light baking works and how you can get the most out of it.

Getting ready

Light baking requires you to have a scene ready. It should have geometries and, obviously, lights. For this recipe, we will rely on Unity's standard features so there is no need to create additional shaders or materials. For a better control, you might want to access the Lighting window. If you don't see it, select Window | Lighting from the menu and dock it where it is more convenient for you.

How to do it…

Light baking requires some manual configuration. There are...