Book Image

Unity 2017 Game Optimization - Second Edition

By : Chris Dickinson
Book Image

Unity 2017 Game Optimization - Second Edition

By: Chris Dickinson

Overview of this book

Unity is an awesome game development engine. Through its massive feature-set and ease-of-use, Unity helps put some of the best processing and rendering technology in the hands of hobbyists and professionals alike. This book shows you how to make your games fly with the recent version of Unity 2017, and demonstrates that high performance does not need to be limited to games with the biggest teams and budgets. Since nothing turns gamers away from a game faster than a poor user-experience, the book starts by explaining how to use the Unity Profiler to detect problems. You will learn how to use stopwatches, timers and logging methods to diagnose the problem. You will then explore techniques to improve performance through better programming practices. Moving on, you will then learn about Unity’s built-in batching processes; when they can be used to improve performance, and their limitations. Next, you will import your art assets using minimal space, CPU and memory at runtime, and discover some underused features and approaches for managing asset data. You will also improve graphics, particle system and shader performance with a series of tips and tricks to make the most of GPU parallel processing. You will then delve into the fundamental layers of the Unity3D engine to discuss some issues that may be difficult to understand without a strong knowledge of its inner-workings. The book also introduces you to the critical performance problems for VR projects and how to tackle them. By the end of the book, you will have learned to improve the development workflow by properly organizing assets and ways to instantiate assets as quickly and waste-free as possible via object pooling.
Table of Contents (17 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback
Software and Hardware List

The Frame Debugger

Before we dive into how batching can save us Draw Calls, let's explore a useful tool, which can help us determine how batching is affecting our Scene--the Frame Debugger.

We can open the Frame Debugger by selecting Window | Frame Debugger from the main window or clicking on the Frame Debugger button in the Breakdown View Options in the Rendering Area of the Profiler. Either approach will open the Frame Debug window.

Clicking on the Enable button in the Frame Debug window will allow us to observe how our Scene is being constructed, one Draw Call at a time. The following screenshot shows the user interface of the Frame Debugger, with a list of GPU instructions in the left-hand panel, and more detailed information in the right-hand panel:

There is a lot of information in this window, which can provide useful information if we want to debug the behavior of a single Draw Call, but the most useful area to look at is the Drawing section in the left-hand panel, which lists all of...