---
title: MTLFunctionStitchingInputNode
framework: metal
role: symbol
role_heading: Class
path: metal/mtlfunctionstitchinginputnode
---

# MTLFunctionStitchingInputNode

A call graph node that describes an input to the call graph.

## Declaration

```swift
class MTLFunctionStitchingInputNode
```

## Overview

Overview An input node contains data from one of the stitched function’s parameters. The output data type of an input node has the same type as the matching parameter.

## Topics

### Initializing an input node

- [init(argumentIndex:)](metal/mtlfunctionstitchinginputnode/init(argumentindex:).md)

### Configuring an input node

- [argumentIndex](metal/mtlfunctionstitchinginputnode/argumentindex.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [MTLFunctionStitchingNode](metal/mtlfunctionstitchingnode.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Stitched function libraries

- [Customizing shaders using function pointers and stitching](metal/customizing-shaders-using-function-pointers-and-stitching.md)
- [MTLStitchedLibraryDescriptor](metal/mtlstitchedlibrarydescriptor.md)
- [MTLFunctionStitchingGraph](metal/mtlfunctionstitchinggraph.md)
- [MTLFunctionStitchingFunctionNode](metal/mtlfunctionstitchingfunctionnode.md)
- [MTLFunctionStitchingNode](metal/mtlfunctionstitchingnode.md)
- [MTLFunctionStitchingAttributeAlwaysInline](metal/mtlfunctionstitchingattributealwaysinline.md)
- [MTLFunctionStitchingAttribute](metal/mtlfunctionstitchingattribute.md)