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

Scrolling textures by modifying UV values

One of the most common texture techniques used in today's game industry is the process of allowing you to scroll the textures over the surface of an object. This allows you to create effects such as waterfalls, rivers, lava flows, and so on. It's also a technique that is the basis to create animated sprite effects, but we will cover this in a subsequent recipe of this chapter. Let's first see how we will create a simple scrolling effect in a Surface Shader.

Getting ready

To begin this recipe, you will need to create a new shader file and material. This will set us up with a nice clean shader that we can use to study the scrolling effect by itself.

How to do it…

To begin with, we will launch our new shader file that we just created and enter the code mentioned in the following steps:

  1. The shader will need two new properties that will allow us to control the speed of the texture scrolling. So, let's add a speed property for the X direction and a speed property...