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

What is a cheap shader?

When first asked the question, what is a cheap shader, it might be a little tough to answer as there are many elements that go into making a more efficient shader. It could be the amount of memory used up by your variables. It could be the amount of textures the shader is using. It could also be that our shader is working fine, but we can actually produce the same visual effect with half the amount of data by reducing the amount of code we are using or data we are creating. We are going to explore a few of these techniques in this recipe and show how they can be combined to make your shader fast and efficient but still produce the high-quality visuals everyone expects from games today, whether on a mobile or PC.

Getting ready

In order to get this recipe started, we need to gather a few resources together. So let's perform the following tasks:

  1. Create a new scene and fill it with a simple sphere object and single directional light.

  2. Create a new shader and material and assign...