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

Chapter 5. Vertex Functions

The term shader originates from the fact that Cg has been used mainly to simulate realistic lighting conditions (shadows) on 3D models. Despite this, shaders are now much more than that. They not only define the way the objects are going to look, they can also redefine their shapes entirely. If you want to learn how to manipulate the geometry of a 3D object via shaders, this is the chapter for you.

In this chapter, you will learn the following recipes:

  • Accessing a vertex color in a Surface Shader

  • Animating vertices in a Surface Shader

  • Extruding your models

  • Implementing a snow shader

  • Implementing a volumetric explosion