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

Extruding your models

One of the biggest problems in games is repetitions. Creating new content is a time-consuming task, and when you have to face thousands of enemies, chances are that they will all look the same. A relatively cheap technique to add variations to your models is using a shader that alters its basic geometry. This recipe will show you a technique called normal extrusion, which can be used to create a chubbier or skinnier version of a model, as shown in the following picture with the soldier from the Unity camp demo:

Getting ready

For this recipe, we need to have access to the shader used by the model that you want to alter. Once you have it, we duplicate it so that we can edit it safely. It can be done as follows:

  1. Find the shader your model is using and once selected, duplicate it by pressing Ctrl + D.

  2. Duplicate the original material of the model and assign the cloned shader to it.

  3. Assign the new material to your model, and start editing it.

In order for this effect to work,...