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

# glGetUniformBlockIndex(_:_:)

## Declaration

```swift
func glGetUniformBlockIndex(_ program: GLuint, _ uniformBlockName: UnsafePointer<GLchar>!) -> GLuint
```