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38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
---
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title: SubShader
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---
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```glsl
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SubShader "SubShaderName" {
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...
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// 全局变量区：变量声明，结构体声明，渲染状态声明
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...
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Tags {ReplaceTag = "opaque"}
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UsePass "ShaderName/SubShaderName/PassName"
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Pass "PassName" {
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...
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}
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}
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```
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## Tags
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In the [Shader Object](/en/docs/graphics/shader/class/) section, we learned the basic concepts and uses of Tags. In ShaderLab, you can directly declare and specify them using the `Tags` directive, without needing to manually specify them using the `SubShader.setTag` API method.
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## UsePass
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If a `SubShader` contains multiple `Pass` objects, you can reuse other `Pass` objects using the `UsePass` directive, such as the engine's built-in PBR Pass: `UsePass "pbr/Default/Forward"`
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| Built-in Shader | Pass Path |
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| :-----------------: | :-----------------------------: |
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| PBR | pbr/Default/Forward |
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| Unlit | unlit/Default/Forward |
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| Skybox | skybox/Default/Forward |
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| Particle-shader | particle-shader/Default/Forward |
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| SpriteMask | SpriteMask/Default/Forward |
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| Sprite | Sprite/Default/Forward |
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