OpenGL ES 2.0 游戏与图形编程实战指南

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"Game and Graphics Programming for iOS and Android with OpenGL ES 2.0" 是一本专为移动平台游戏和图形编程设计的指南，涵盖了iOS和Android设备上的OpenGL ES 2.0技术。这本书由Romain Marucchi-Foino撰写，旨在帮助开发者深入理解和应用3D图形编程。在书中，作者引导读者从基础开始，逐步探索OpenGL ES 2.0的各个方面。首先，"Getting Started"章节介绍了如何入门，包括设置开发环境和基本概念。接着，"Setting Up Your Graphic Projections"章节讨论了图形投影的重要性，讲解如何创建合适的视口和投影矩阵，以便正确显示3D物体。 "Dealing with Complex Geometry"章节则深入到处理复杂的几何形状，介绍如何有效地存储和操作大量顶点数据。"Building a Scene"章节讲解如何组织和管理游戏场景中的对象，包括光照、纹理和模型加载。 "Optimization"章节是性能的关键，讨论如何优化代码以获得最佳的图形渲染效率，这对于移动设备尤其重要。"Real-Time Physics"章节介绍了实时物理模拟，让游戏世界更具交互性和真实感。 "Camera"章节探讨了相机系统，包括视角控制和运动，使玩家能够自由地观察游戏世界。"Pathfinding"章节讲解了路径寻找算法，如A*算法，使得游戏角色能在游戏世界中智能导航。 "Audio and Other Cool Game Programming Stuff"章节扩展了游戏开发的范围，涉及音频处理和其他游戏特性。"Advanced Lighting"章节深入讲解高级光照技术，如法线贴图和环境映射，提升图形质量。 "Advanced FX"章节则讨论了高级特效，如后期处理效果和粒子系统，增加游戏视觉吸引力。最后，"Skeletal Animation"章节介绍了骨骼动画技术，让角色动作更加流畅自然。全书还包括一个索引，方便读者查找特定主题。此书是针对希望在iOS和Android平台上进行3D游戏和图形编程的开发者的宝贵资源，通过实例和实践指导，帮助他们掌握OpenGL ES 2.0的核心技术和技巧。

xiv

CONTENTS

Third-Person Camera with Collision 145

Summary 149

CHAPTER 8: PATHFINDING 151

Recast and Detour 151

Navigation 152

Creating the Navigation Mesh 153

3D Physics Picking 155

Player’s Auto Drive 159

Visualizing the Way Points 161

Catch Me If You Can! 163

Know Your Enemy 165

Game State Logic 167

Summary 170

CHAPTER 9: AUDIO AND OTHER COOL GAME

PROGRAMMING STUFF 171

OpenAL 172

OGG Vorbis 173

Hello World OpenAL Style 174

Initializing OpenAL 174

Static In-Memory Sound Playback 175

Positional Sound Source 176

Piano Game 178

Loading a Static and Streamed Sound 178

Color Picking 182

Piano Game Logic 185

Final Adjustments 188

Rolling Ball Game 190

GFX Shaders 190

Linking the Positional Sound Sources 191

Accelerometer-Driven Camera 195

Cheap FX 198

Game Logic and Tweaks 200

Summary 205

CHAPTER 10: ADVANCED LIGHTING 207

Types of Lamps 208

Let There Be Light 208

Directional Lamp Shader 211

Struct as Uniforms 214

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INTRODUCTION

WELCOME TO Game and Graphics Programming for iOS and Android with OpenGL ES 2.0. This

book is not your usual “OpenGL Hello Triangle” book — it’s not meant to explain the “why”

(Google is there for that), but rather, to show you the “how.” This book will strictly teach you what

works and what doesn’t when it comes to game and graphics programming.

Using more than 50 unique tutorials (which also include some full game frameworks), this book

adopts a straightforward practical approach (probably never seen before) that only focuses on what

you need to learn to insure that you will be able to create

a game.

You will learn all the necessary elements in order to create a full-ﬂ edged game with rich 3D graphics.

If you are looking for an aggressive teaching method that enables you to quickly move forward to

create your dream game, this book is for you!

WHO THIS BOOK IS FOR

Be aware that this is not a beginner book. It is an intermediate-level book that assumes you

are familiar with linear algebra (matrices, vectors, and quaternions), you have a strong C/C++

programming background, you have at least touched base with OpenGL or OpenGL ES, and you

basically know how computer graphics work in general.

If you have this necessary knowledge, and want to make lightning-fast progress in game and

graphics programming, then you have found the right publication. This book is written for people

who want to learn the hardcore stuff fast in order to be able to create and push a full-ﬂ edged game

on the App Store and the Android Market.

WHAT THIS BOOK COVERS

Basically everything you need to know in order to create a full game is included in this book. You

will learn about all aspects of creating a game, such as loading 3D geometries and textures; how to

handle materials, shaders, sounds, cameras, clipping, physics, AI, pathﬁ nding, skeletal animations;

and a lot more.

By the end of this book you will be able to apply the knowledge you’ve learned and combine the

different tutorials you’ve completed to create your own state-of-the-art game.

HOW THIS BOOK IS STRUCTURED

This book is structured in such a way that pretty much all chapters depend on each other. Each

chapter shows you progressively how to master the necessary techniques to be able to handle the

next chapter.

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xviii

INTRODUCTION

Here is a list of all the chapters and what will be covered in each of them:

Chapter 1, “Getting Started” — You will learn how to set up your development

environment, download this book’s SDK, import and re-compile the tutorials, and deal with

the template project that you will be using throughout this publication.

Chapter 2, “Setting Up Your Graphic Projections” — Since you have a running template,

I will show you how to set up the necessary projection matrix to be able to handle 2D,

2.5D, or 3D. You will also learn how to draw simple geometry onscreen and handle a

camera matrix.

Chapter 3, “Dealing with Complex Geometry” — You will create a Wavefront OBJ viewer

that will allow you to learn how to load complex geometry from disk. You will also learn

how to load and create textures, deal with basic lighting, and respond to touch events.

Chapter 4, “Building a Scene” — This chapter will extend the knowledge that you’ve

learned in Chapter 3 and will explain how to handle a more complex scene. You will learn

about drawing sequences and how to create reusable shaders.

Chapter 5, “Optimization” — In this chapter, I will show you techniques that will allow

you to optimize the performance of your drawing. You will touch base with texture

compression and shader optimization, and learn how to convert triangles to triangle strips

as well as other tips and tricks to get better FPS.

Chapter 6, “Real-Time Physics” — Since you will know by now how to handle a scene

properly, this chapter is about adding real-time physics behaviors to your scene using Bullet.

I will show you how to create a physical world and add physical entities to it. You will then

learn how to handle in code different techniques that will allow you to add logic upon

collision callbacks or based on the contact points between two or more physical entities.

Chapter 7, “Camera” — This chapter will focus entirely on cameras. You will learn to build

frustum planes and will be able to determine the visibility of each object of your scene in the

ﬁ eld of view of a camera. I will then show you how to implement multiple types of cameras,

including a full-ﬂ edged ﬁ rst- and third-person camera with collision, ready to be used in

your own apps.

Chapter 8, “Pathﬁ nding” — Artiﬁ cial intelligence (AI) and pathﬁ nding will play an important

role inside your games, and that’s what this chapter is all about. You will learn how to use the

Recast and Detour libraries to build a navigation mesh and have entities moving automatically

in the scene. In this chapter, I will also demonstrate how to use True Type Font to generate a

font texture and draw dynamic text onscreen.

Chapter 9, “Audio and Other Cool Game Programming Stuff” — This one is all about

audio using OpenAL. In this chapter, you will learn how to load OGG Vorbis sound ﬁ les

and either stream them from memory in real time or statically store them in audio memory.

I will also introduce how to create 3D positional and ambient sound sources and will touch

base on how to use the accelerometer, along with how to animate textures and create other

miscellaneous effects.

➤

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剩余315页未读，继续阅读

玄冬Wong

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