---
title: "init(device:isSecondarySourceFilter:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpscnnsubtractgradient/init(device:issecondarysourcefilter:)"
---

# init(device:isSecondarySourceFilter:)

## Declaration

```swift
init(device: any MTLDevice, isSecondarySourceFilter: Bool)
```