---
title: "addConstant(_:named:)"
framework: realitykit
role: symbol
role_heading: Instance Method
platforms: [iOS 27.0+, iPadOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: "realitykit/shadergraph/addconstant(_:named:)"
---

# addConstant(_:named:)

## Declaration

```swift
@discardableResult final func addConstant(_ value: ShaderGraph.Value, named name: String) throws -> String
```