---
title: GL_EXT_occlusion_query_boolean
framework: OpenGL ES
role: symbol
role_heading: Global Variable
platforms: [iOS 2.0+, iPadOS 2.0+, Mac Catalyst 2.0+, tvOS 9.0+, visionOS 1.0+]
path: opengles/gl_ext_occlusion_query_boolean
---

# GL_EXT_occlusion_query_boolean

## Declaration

```swift
var GL_EXT_occlusion_query_boolean: Int32 { get }
```