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Unity 5.x Shaders and Effects Cookbook

Unity 5.x Shaders and Effects Cookbook

By : Zucconi
4.1 (9)
close
Unity 5.x Shaders and Effects Cookbook

Unity 5.x Shaders and Effects Cookbook

4.1 (9)
By: 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 (12 chapters)
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Preface
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Preface
What this book covers
What you need for this book
Who this book is for
Sections
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Creating Your First Shader
1. Creating Your First Shader
Introduction
Creating a basic Standard Shader
Migrating Legacy Shaders from Unity 4 to Unity 5
Adding properties to a shader
Using properties in a Surface Shader
2
2. Surface Shaders and Texture Mapping
2. Surface Shaders and Texture Mapping
Introduction
Diffuse shading
Using packed arrays
Adding a texture to a shader
Scrolling textures by modifying UV values
Normal mapping
Creating a transparent material
Creating a Holographic Shader
Packing and blending textures
Creating a circle around your terrain
3
3. Understanding Lighting Models
3. Understanding Lighting Models
Introduction
Creating a custom diffuse lighting model
Creating a Toon Shader
Creating a Phong Specular type
Creating a BlinnPhong Specular type
Creating an Anisotropic Specular type
4
4. Physically Based Rendering in Unity 5
4. Physically Based Rendering in Unity 5
Introduction
Understanding the metallic setup
Adding transparency to PBR
Creating mirrors and reflective surfaces
Baking lights in your scene
5
5. Vertex Functions
5. Vertex Functions
Introduction
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
6
6. Fragment Shaders and Grab Passes
6. Fragment Shaders and Grab Passes
Introduction
Understanding Vertex and Fragment Shaders
Using grab pass
Implementing a Glass Shader
Implementing a Water Shader for 2D games
7
7. Mobile Shader Adjustment
7. Mobile Shader Adjustment
Introduction
What is a cheap shader?
Profiling your shaders
Modifying our shaders for mobile
8
8. Screen Effects with Unity Render Textures
8. Screen Effects with Unity Render Textures
Introduction
Setting up the screen effects script system
Using brightness, saturation, and contrast with screen effects
Using basic Photoshop-like Blend modes with screen effects
Using the Overlay Blend mode with screen effects
9
9. Gameplay and Screen Effects
9. Gameplay and Screen Effects
Introduction
Creating an old movie screen effect
Creating a night vision screen effect
10
10. Advanced Shading Techniques
10. Advanced Shading Techniques
Introduction
Using CgInclude files that are built into Unity
Making your shader world modular with CgInclude
Implementing a Fur Shader
Implementing heatmaps with arrays
11
Index
Index

Preface

Unity 5.x Shaders and Effects Cookbook is your guide to becoming familiar with the creation of shaders and post effects in Unity 5. You will start your journey at the beginning, creating the most basic shaders and learning how the shader code is structured. This foundational knowledge will arm you with the means to progress further through each chapter, learning advanced techniques such as volumetric explosions and fur shading. This edition of the book is written specifically for Unity 5 and will help you to master physically-based rendering and global illumination to get as close to photorealism as possible.

By the end of each chapter, you will have gained new skill sets that will increase the quality of your shaders and even make your shader writing process more efficient. These chapters have been tailored so that you can jump into each section and learn a specific skill from beginner to expert. For those who are new to shader writing in Unity, you can progress through each chapter, one at a time, to build on your knowledge. Either way, you will learn the techniques that make modern games look the way they do.

Once you have completed this book, you will have a set of shaders that you can use in your Unity 3D games as well as the understanding to add to them, accomplish new effects, and address performance needs. So let's get started!

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