---
title: "init(sourceGradient:sourceImage:gradientState:kernelSize:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpscnncrosschannelnormalizationgradientnode/init(sourcegradient:sourceimage:gradientstate:kernelsize:)"
---

# init(sourceGradient:sourceImage:gradientState:kernelSize:)

## Declaration

```swift
init(sourceGradient: MPSNNImageNode, sourceImage: MPSNNImageNode, gradientState: MPSNNGradientStateNode, kernelSize: Int)
```