---
title: "glMaterialx(_:_:_:)"
framework: OpenGL ES
role: symbol
role_heading: Function
platforms: [iOS 2.0+, iPadOS 2.0+, Mac Catalyst 2.0+, tvOS 9.0+]
path: "opengles/glmaterialx(_:_:_:)"
---

# glMaterialx(_:_:_:)

## Declaration

```swift
func glMaterialx(_ face: GLenum, _ pname: GLenum, _ param: GLfixed)
```