---
title: delta
framework: metalperformanceshaders
role: symbol
role_heading: Instance Property
path: metalperformanceshaders/mpscnncrosschannelnormalization/delta
---

# delta

The “delta” variable of the kernel function.

## Declaration

```swift
var delta: Float { get set }
```

## Discussion

Discussion The default value is 1.0.

## See Also

### Instance Properties

- [alpha](metalperformanceshaders/mpscnncrosschannelnormalization/alpha.md)
- [beta](metalperformanceshaders/mpscnncrosschannelnormalization/beta.md)
- [kernelSize](metalperformanceshaders/mpscnncrosschannelnormalization/kernelsize.md)