---
title: functionConstantInputs
framework: realitykit
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: realitykit/shadergraph/functionconstantinputs
---

# functionConstantInputs

The names of graph inputs whose values are baked in at program compilation time.

## Declaration

```swift
final var functionConstantInputs: [String]
```

## Discussion

Discussion Function constant inputs are compiled directly into the shader and cannot be changed after ShaderGraphMaterial.Program is created. Supply their values via constantValues.