---
title: "init(sourceGradient:sourceImage:labels:weights:gradientState:lossDescriptor:isLabelsGradientFilter:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpsnnlossgradientnode/init(sourcegradient:sourceimage:labels:weights:gradientstate:lossdescriptor:islabelsgradientfilter:)-3rcen"
---

# init(sourceGradient:sourceImage:labels:weights:gradientState:lossDescriptor:isLabelsGradientFilter:)

## Declaration

```swift
init(sourceGradient: MPSNNImageNode, sourceImage: MPSNNImageNode, labels: MPSNNImageNode, weights: MPSNNImageNode?, gradientState: MPSNNGradientStateNode?, lossDescriptor descriptor: MPSCNNLossDescriptor, isLabelsGradientFilter: Bool)
```