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
Credits
About the Authors
www.PacktPub.com
Preface
Index

Using brightness, saturation, and contrast with screen effects


Now that we have our screen effects system up and running, we can explore how to create more involved pixel operations to perform some of the more common Screen Effects found in games today.

To begin, using a screen effect to adjust the overall final colors of your game is crucial in giving artists a global control over the final look of the game. Techniques such as color adjustment sliders to adjust the intensity for the reds, blues, and greens of the final rendered game or techniques like putting a certain tone of color over the whole screen as seen in something like a sepia film effect.

For this particular recipe, we are going to cover some of the more core color adjustment operations we can perform on an image. These are brightness, saturation, and contrast. Learning how to code these color adjustments gives us a nice base to learn the art of screen effects.

Getting ready

We will need to create a couple of new assets. We can...