Pass block in ShaderLab reference

To define a Pass in ShaderLabUnity’s language for defining the structure of Shader objects. More info
See in Glossary, use a Pass block. This page contains information on using Pass blocks. For information on how a ShaderA program that runs on the GPU. More info
See in Glossary object works, and the relationship between Shader objectsAn instance of the Shader class, a Shader object is container for shader programs and GPU instructions, and information that tells Unity how to use them. Use them with materials to determine the appearance of your scene. More info
See in Glossary, SubShaders and Passes, see Shader object fundamentals.

Inside the Pass block, you can:

Assign a name to the Pass, using a Name block. See ShaderLab: assigning a name to a Pass.
Assign key-value pairs of data to the Pass, using a Tags block. See ShaderLab: assigning tags to a Pass.
Perform operations using ShaderLab commands. See ShaderLab: using commands.
Add shader code to the Pass, using a shader code block. See ShaderLab: shader code blocks.
Specify package requirements using the PackageRequirements block. This makes Unity only run the Pass if the required packages are installed. See ShaderLab: specifying package requirements.

Render pipeline compatibility

Feature name	Universal Render PipelineA series of operations that take the contents of a Scene, and displays them on a screen. Unity lets you choose from pre-built render pipelines, or write your own. More info See in Glossary (URP)	High Definition Render Pipeline (HDRP)	Custom SRP	Built-in Render Pipeline
ShaderLab: Pass block	Yes	Yes	Yes	Yes

Syntax

Signature	Function
`Pass` `{` `<optional: name>` `<optional: tags>` `<optional: commands>` `<optional: shader code>` `}`	Defines a Pass.

Additional resources

Add a shader pass in a custom shader

Pass in ShaderLab reference

Name directive in ShaderLab reference