---
title: MPSUserAvailableFunctionConstantStartIndex
framework: metalperformanceshaders
role: symbol
role_heading: Global Variable
path: metalperformanceshaders/mpsuseravailablefunctionconstantstartindex
---

# MPSUserAvailableFunctionConstantStartIndex

## Declaration

```swift
var MPSUserAvailableFunctionConstantStartIndex: Int32 { get }
```