---
title: "init(gradientImages:forwardFilter:isSecondarySourceFilter:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpsnnarithmeticgradientnode/init(gradientimages:forwardfilter:issecondarysourcefilter:)"
---

# init(gradientImages:forwardFilter:isSecondarySourceFilter:)

## Declaration

```swift
init(gradientImages: [MPSNNImageNode], forwardFilter filter: MPSNNFilterNode, isSecondarySourceFilter: Bool)
```