说明：  高层着色语言(HLSL)是DirectX® 9最为强力的新组件之一。使用这种标准的高级语言, 在进行着色时编写者可以专注于算法而不用再去理会诸如寄存器的分配，寄存器读端口限制, 并行处理指令等等硬件细节. 除了把开发者从硬件细节中解放出来之外，HLSL 也具有高级语言所有的全部优势，诸如：代码重用容易, 可读性增强以及存在一个优化过的编译器。本书和 ShaderX2 - Shader Tips & Tricks 这本书的许多章节就用到了HLSL编写的着色器. 阅读完本章引言后，你会很容易理解那些着色器并在工作中用到它们。
(The high-level Shading Language (HLSL) is 9 DirectX one of the most powerful new components. Advanced language to use this standard, in coloring writers can focus on algorithm without ignoring the distribution such as register, register read port restrictions, parallel processing instructions, hardware details. In addition to the developer is liberated the hardware details, HLSL also has all the advantages of a high-level language, such as: all of the code reuse easy, enhance the readability and the presence of an optimizing compiler. Many chapters of this book and ShaderX2- Shader Tips & Tricks this book on the use of HLSL prepared by the shader. Read this chapter, you will be very easy to understand those shaders and use them at work.)