---
title: "glShaderSource(_:_:_:_:)"
framework: OpenGL ES
role: symbol
role_heading: Function
platforms: [iOS 3.0+, iPadOS 3.0+, Mac Catalyst 3.0+, tvOS 9.0+]
path: "opengles/glshadersource(_:_:_:_:)"
---

# glShaderSource(_:_:_:_:)

## Declaration

```swift
func glShaderSource(_ shader: GLuint, _ count: GLsizei, _ string: UnsafePointer<UnsafePointer<GLchar>?>!, _ length: UnsafePointer<GLint>!)
```