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Unity Game Optimization
Unity Game Optimization

Unity Game Optimization: Enhance and extend the performance of all aspects of your Unity games , Third Edition

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Profile Icon Dr. Davide Aversa Profile Icon Dickinson
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Paperback Nov 2019 404 pages 3rd Edition
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Arrow left icon
Profile Icon Dr. Davide Aversa Profile Icon Dickinson
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Full star icon Full star icon Full star icon Full star icon Full star icon 5 (1 Ratings)
Paperback Nov 2019 404 pages 3rd Edition
eBook
$15.99 $22.99
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Unity Game Optimization

Evaluating Performance Problems

Performance evaluation for most software products is a very scientific process. First, we determine the maximum/minimum supported performance metrics, such as the allowed memory usage, acceptable CPU consumption, and the number of concurrent users. Next, we perform load testing against the application in scenarios with a version of the application built for the target platform, and test it while gathering instrumentation data. Once this data is collected, we analyze and search it for performance bottlenecks. If problems are discovered, we complete a Root Cause Analysis (RCA), and then make changes in the configuration or application code to fix the issue and repeat it.

Although game development is a very artistic process, it is still exceptionally technical. Our game should have a target audience in mind, which can tell us what hardware limitations...

Gathering profiling data using the Unity Profiler

The Unity Profiler is built into the Unity Editor itself and provides an expedient way of narrowing down our search for performance bottlenecks by generating usage and statistics reports on a multitude of Unity3D subsystems during runtime. The different subsystems for which it can gather data are listed as follows:

  • CPU consumption (per-major subsystem)
  • Basic and detailed rendering and GPU information
  • Runtime memory allocations and overall consumption
  • Audio source/data usage
  • Physics engine (2D and 3D) usage
  • Network messaging and operation usage
  • Video playback usage
  • Basic and detailed user interface performance
  • Global Illumination (GI) statistics

There are generally two approaches to making use of a profiling tool: instrumentation and benchmarking (although, admittedly, the two terms are often used interchangeably).

Instrumentation...

Best approaches to performance analysis

Good coding practices and project asset management often make finding the root cause of a performance issue relatively simple, at which point the only real problem is figuring out how to improve the code. For instance, if the method only processes a single gigantic for loop, then it will be a pretty safe assumption that the problem is either with how many iterations the loop is performing, whether or not the loop is causing cache misses by reading memory in a non-sequential fashion, how much work is done in each iteration, or how much work it takes to prepare for the next iteration.

Of course, whether we're working individually or in a group setting, a lot of our code is not always written in the cleanest way possible, and we should expect to have to profile some poor coding work from time to time. Sometimes, we are forced to implement...

Final thoughts on profiling and analysis

One way of thinking about performance optimization is the act of stripping away unnecessary tasks that waste valuable resources. We can do the same and maximize our own productivity by minimizing any wasted effort. Effective use of the tools we have at our disposal is of paramount importance. It would serve us well to optimize our own workflow by remaining aware of some best practices and techniques.

Most, if not all, advice for using any kind of data-gathering tool properly can be summarized into three different strategies:

  • Understanding the tool
  • Reducing noise
  • Focusing on the issue

Understanding the Profiler

The Profiler is a well-designed and intuitive tool, so understanding the...

Summary

You learned a great deal throughout this chapter on how to detect and analyze performance issues within your applications. You learned about many of the Profiler's features and secrets, explored a variety of tactics to investigate performance issues with a more hands-on approach, and have been introduced to a variety of different tips and strategies to follow. You can use these to improve your productivity immensely, so long as you appreciate the wisdom behind them and remember to exploit them when the situation makes it possible.

This chapter has introduced us to the tips, tactics, and strategies we need in order to identify a performance issue that requires improvement. In the remaining chapters, we will explore methods on how to fix issues and improve performance whenever possible. So, give yourself a pat on the back for getting through the boring part first. We...

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Key benefits

  • Optimize graphically intensive games using the latest features of Unity such as Entity Component System (ECS) and the Burst compiler
  • Explore techniques for solving performance issues with your VR projects
  • Learn best practices for project organization to save time through an improved workflow

Description

Unity engine comes with a great set of features to help you build high-performance games. This Unity book is your guide to optimizing various aspects of your game development, from game characters and scripts, right through to animations. You’ll explore techniques for writing better game scripts and learn how to optimize a game using Unity technologies such as ECS and the Burst compiler. The book will also help you manage third-party tooling used with the Unity ecosystem. You’ll also focus on the problems in the performance of large games and virtual reality (VR) projects in Unity, gaining insights into detecting performance issues and performing root cause analysis. As you progress, you’ll discover best practices for your Unity C# script code and get to grips with usage patterns. Later, you’ll be able to optimize audio resources and texture files, along with effectively storing and using resource files. You’ll then delve into the Rendering Pipeline and learn how to identify performance problems in the pipeline. In addition to this, you’ll learn how to optimize the memory and processing unit of Unity. Finally, you’ll cover tips and tricks used by Unity professionals to improve the project workflow. By the end of this book, you’ll have developed the skills you need to build interactive games using Unity and its components.

Who is this book for?

The book is intended for intermediate Unity game developers who wants to maximize the performance of their game. The book assumes familiarity with C# programming.

What you will learn

  • Apply the Unity Profiler to find bottlenecks in your app, and discover how to resolve them
  • Discover performance problems that are critical for VR projects and learn how to tackle them
  • Enhance shaders in an accessible way, optimizing them with subtle yet effective performance tweaks
  • Use the physics engine to keep scenes as dynamic as possible
  • Organize, filter, and compress art assets to maximize performance while maintaining high quality
  • Use the Mono framework and C# to implement low-level enhancements that maximize memory usage and prevent garbage collection

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 29, 2019
Length: 404 pages
Edition : 3rd
Language : English
ISBN-13 : 9781838556518
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Product Details

Publication date : Nov 29, 2019
Length: 404 pages
Edition : 3rd
Language : English
ISBN-13 : 9781838556518
Languages :
Tools :

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Table of Contents

14 Chapters
Section 1: Base Scripting Optimization Chevron down icon Chevron up icon
Evaluating Performance Problems Chevron down icon Chevron up icon
Scripting Strategies Chevron down icon Chevron up icon
Section 2: Graphical Optimizations Chevron down icon Chevron up icon
The Benefits of Batching Chevron down icon Chevron up icon
Optimizing Your Art Assets Chevron down icon Chevron up icon
Faster Physics Chevron down icon Chevron up icon
Dynamic Graphics Chevron down icon Chevron up icon
Section 3: Advance Optimizations Chevron down icon Chevron up icon
Optimizations for Virtual and Augmented Reality Chevron down icon Chevron up icon
Masterful Memory Management Chevron down icon Chevron up icon
The Data-Oriented Technology Stack Chevron down icon Chevron up icon
Tactical Tips and Tricks Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

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