---
title: "findBufferIndex(port:)"
framework: realitykit
role: symbol
role_heading: Instance Method
platforms: [iOS 27.0+, iPadOS 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: "realitykit/computegraphcomponent/findbufferindex(port:)"
---

# findBufferIndex(port:)

## Declaration

```swift
func findBufferIndex(port: ComputeNodeGraph.Port.Address) -> Int?
```