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

# glGetTransformFeedbackVarying(_:_:_:_:_:_:_:)

## Declaration

```swift
func glGetTransformFeedbackVarying(_ program: GLuint, _ index: GLuint, _ bufSize: GLsizei, _ length: UnsafeMutablePointer<GLsizei>!, _ size: UnsafeMutablePointer<GLsizei>!, _ type: UnsafeMutablePointer<GLenum>!, _ name: UnsafeMutablePointer<GLchar>!)
```