Unity 中的着色器可以用三种不同的方式编写：
着色器教程可以指导您选择适合您需求的类型。
无论您选择哪种类型的着色器，着色器代码的实际内容始终以名为 ShaderLab 的语言进行包装（这种语言用于组织着色器结构）。如下所示：
Shader "MyShader" {
Properties {
_MyTexture ("My Texture", 2D) = "white" { }
// 此处还放置颜色或矢量等其他属性
}
SubShader {
// 此处放置以下内容：
// - 表面着色器或
顶点和片元着色器或
// - 固定函数着色器
}
SubShader {
// 此处放置比上面更简单的 SubShader 版本
// 此版本能够在较旧的显卡上运行
}
}
我们建议您首先阅读以下各部分了解关于 ShaderLab 语法的一些基本概念，然后再继续阅读其他各部分了解表面着色器或顶点和片元着色器。由于固定函数着色器仅使用 ShaderLab 编写而成，因此您可以在 ShaderLab 参考本身中找到有关这些着色器的更多信息。
以下参考资料包含了不同类型着色器的大量示例。如果还需要特定表面着色器的更多示例，可从资源部分 (Resources) 获取 Unity 内置着色器的源代码。Unity 的后期处理效果允许您使用着色器创建许多有趣的效果。
请继续阅读着色器参考资料并查看着色器教程！
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