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

# glGetActiveUniformBlockName(_:_:_:_:_:)

## Declaration

```swift
func glGetActiveUniformBlockName(_ program: GLuint, _ uniformBlockIndex: GLuint, _ bufSize: GLsizei, _ length: UnsafeMutablePointer<GLsizei>!, _ uniformBlockName: UnsafeMutablePointer<GLchar>!)
```