---
title: "glVertexAttrib1f(_:_:)"
framework: OpenGL ES
role: symbol
role_heading: Function
platforms: [iOS 3.0+, iPadOS 3.0+, Mac Catalyst 3.0+, tvOS 9.0+]
path: "opengles/glvertexattrib1f(_:_:)"
---

# glVertexAttrib1f(_:_:)

## Declaration

```swift
func glVertexAttrib1f(_ indx: GLuint, _ x: GLfloat)
```