---
title: kIOSurfaceCopybackInnerCache
framework: IOSurface
role: symbol
role_heading: Global Variable
platforms: [iOS 11.0+, iPadOS 11.0+, Mac Catalyst 13.0+, macOS 10.6+, tvOS 11.0+, visionOS 1.0+]
path: iosurface/kiosurfacecopybackinnercache
---

# kIOSurfaceCopybackInnerCache

## Declaration

```swift
var kIOSurfaceCopybackInnerCache: Int { get }
```