入门教程：3D游戏编程之DirectX 9.0技术解析

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"DirectX 9 3D游戏程序设计入门(龙书英文版)" 是一本由Frank D. Luna编写的书籍，旨在引导初学者进入3D游戏编程的世界，使用的是Microsoft的DirectX 9 API。这本书的技术审阅者是Rod Lopez，由Wordware Publishing, Inc.出版。在DirectX 9中，3D游戏程序设计涉及到一系列关键概念和技术。首先，DirectX是一个由微软开发的API集合，主要用于处理多媒体任务，特别是游戏开发中的图形、音频、视频和输入设备的交互。DirectX 9专注于3D图形渲染，提供了强大的硬件加速功能，能够创建出逼真的游戏环境。本书的核心内容可能包括以下几个方面： 1. **Direct3D基础**：介绍Direct3D的基本结构和组件，如设备创建、窗口管理、视口设置等。读者会学习如何初始化Direct3D环境，以及如何设置场景的基本参数。 2. **向量和矩阵运算**：3D图形离不开向量和矩阵运算，书中可能会详细解释它们在3D变换、投影和光照计算中的应用。 3. **顶点和索引缓冲区**：这是存储3D模型数据的主要方式，包括顶点位置、颜色、纹理坐标等信息。学习如何使用缓冲区可以提高渲染效率。 4. **纹理映射**：3D物体表面的细节通常通过纹理映射实现，书中会涵盖纹理加载、坐标系转换和混合模式等内容。 5. **光照和阴影**：深入理解光照模型，如Phong模型，以及如何模拟阴影以增加真实感。 6. **渲染技术**：包括多边形填充、裁剪、深度缓冲等，这些是构建3D场景的关键步骤。 7. **动画和帧率控制**：如何实现物体的动态行为，以及如何优化代码以保持流畅的游戏体验。 8. **输入处理**：介绍如何捕获和响应用户的键盘、鼠标输入，以及如何处理游戏控制器。 9. **DirectX的声音和视频处理**：虽然标题主要聚焦3D图形，但DirectX还包括了处理音频和视频的部分，可能会简要介绍这部分内容。 10. **错误处理和调试**：对于任何程序员来说，这是必不可少的一部分，学习如何有效地调试代码和处理运行时错误。 "DirectX 9 3D游戏程序设计入门(龙书英文版)"是一本全面的教程，适合对3D游戏编程感兴趣的初学者，通过这本书，读者将能够掌握利用DirectX 9创建3D游戏的基本技能。

Acknowledgments

I would like to thank my technical editor Rod Lopez for putting in the

time to review this book for both accuracy and improvements. I would

also like to thank Jim Leiterman (author of Vector Game Math Processors

from Wordware Publishing) and Hanley Leung (programmer for Kush

Games), who both reviewed portions of this book. Next, I want thank

Adam Hault and Gary Simmons, who both teach the BSP/PVS course at

www.gameinstitute.com, for their assistance. In addition, I want thank

William Chin who helped me out many years ago. Lastly, I want to

thank the staff at Wordware Publishing, in particular, Jim Hill, Wes

Beckwith, Beth Kohler, Heather Hill, Denise McEvoy, and Alan

McCuller.

Introduction

This book is an introduction to programming interactive 3D computer

graphics using DirectX 9.0, with an emphasis on game development. It

teaches you the fundamentals of Direct3D, after which you will be able

to go on to learn and apply more advanced techniques. Assumingly,

since you have this book in your hands, you have a rough idea of what

DirectX is about. From a developer’s perspective, DirectX is a set of

APIs (application programming interfaces) for developing multimedia

applications on the Windows platform. In this book we are concerned

with a particular DirectX subset, namely Direct3D. As the name

implies, Direct3D is the API used for developing 3D applications.

This book is divided into four main parts. Part I explains the mathe-

matical tools that will be used throughout this book. Part II covers

elementary 3D techniques, such as lighting, texturing, alpha blending,

and stenciling. Part III is largely about using Direct3D to implement a

variety of interesting techniques and applications, such as picking, ter-

rain rendering, particle systems, a flexible virtual camera, and loading

and rendering 3D models (XFiles). The theme of Part IV is vertex and

pixel shaders, including the effects framework and the new (to DirectX

9.0) High-Level Shading Language. The present and future of 3D game

programming is the use of shaders, and by dedicating an entire part of

the book to shaders, we have an up-to-date and relevant book on mod

ern graphics programming.

For the beginner, this book is best read front to back. The chapters

have been organized so that the difficulty increases progressively with

each chapter. In this way, there are no sudden jumps in complexity,

leaving the reader lost. In general, for a particular chapter we will use

the techniques and concepts previously developed. Therefore, it is

important that you have mastered the material of a chapter before con

tinuing. Experienced readers can pick the chapters of interest.

Finally, you may wonder what kinds of games you can develop after

reading this book. The answer to that question is best obtained by

skimming through this book and seeing the types of applications that

are developed. From that you should be able to visualize the types of

games that can be developed based on the techniques taught in this

book and some of your own ingenuity.

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