---
title: "glClientWaitSync(_:_:_:)"
framework: OpenGL ES
role: symbol
role_heading: Function
platforms: [iOS 7.0+, iPadOS 7.0+, Mac Catalyst 7.0+, tvOS 9.0+]
path: "opengles/glclientwaitsync(_:_:_:)"
---

# glClientWaitSync(_:_:_:)

## Declaration

```swift
func glClientWaitSync(_ sync: GLsync!, _ flags: GLbitfield, _ timeout: GLuint64) -> GLenum
```