---
title: MPSCustomKernelIndexSrc4Index
framework: metalperformanceshaders
role: symbol
role_heading: Global Variable
path: metalperformanceshaders/mpscustomkernelindexsrc4index
---

# MPSCustomKernelIndexSrc4Index

## Declaration

```swift
var MPSCustomKernelIndexSrc4Index: MPSCustomKernelIndex { get }
```