---
title: kIOAccelSurfaceShapeNonBlockingBit
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 18.4+, macOS 10.2+]
path: iokit/eioaccelsurfaceshapebits/kioaccelsurfaceshapenonblockingbit
---

# kIOAccelSurfaceShapeNonBlockingBit

## Declaration

```occ
kIOAccelSurfaceShapeNonBlockingBit = 0x00000001
```