---
title: CGToneMapping.headroomAdaptiveGainCurve
framework: Core Graphics
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: coregraphics/cgtonemapping/headroomadaptivegaincurve
---

# CGToneMapping.headroomAdaptiveGainCurve

## Declaration

```swift
case headroomAdaptiveGainCurve
```