Add a shader tag to a SubShader or Pass

In ShaderLabUnity’s language for defining the structure of Shader objects. More info
See in Glossary, you assign tags to a SubShader or Pass by placing a Tags block inside the block.

Note that both SubShaders and Passes use the Tags block, but they work differently. Assigning SubShader tags to a Pass has no effect, and vice versa. The difference is where you put the Tags block:

• To define Pass tags, place the Tags block inside a Pass block.
• To define SubShader tags, place the Tags block inside a SubShader block but outside a Pass block.

Example in a Pass block

Shader "Examples/ExampleRequireOptions"
{
    SubShader
    {
        Pass
        {    
              Tags { "RequireOptions" = "SoftVegetation" }
            
              // The rest of the code that defines the Pass goes here.
        }
    }
}

Additional resources

• SubShader tags in ShaderLab reference
• Pass tags in ShaderLab reference