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

# glCopyBufferSubData(_:_:_:_:_:)

## Declaration

```swift
func glCopyBufferSubData(_ readTarget: GLenum, _ writeTarget: GLenum, _ readOffset: GLintptr, _ writeOffset: GLintptr, _ size: GLsizeiptr)
```