---
title: kCGImageDestinationEncodeGainMapPixelFormatRequest
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagedestinationencodegainmappixelformatrequest
---

# kCGImageDestinationEncodeGainMapPixelFormatRequest

## Declaration

```swift
let kCGImageDestinationEncodeGainMapPixelFormatRequest: CFString
```