这本书的重点就是shader-渲染，在3D游戏开发过程中，渲染是一个难点，也是一个重点，本书就是详细介绍如何渲染的书籍，从入门到高级。-the book is written for anybody who has some interest in the topic.Because the topics and techniques covered throughout this book are so varied,it is bound to be ofinterest to everyb