WebGLRenderingContext: getExtension() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers.

The WebGLRenderingContext.getExtension() method enables a WebGL extension.

Syntax

js
getExtension(name)

Parameters

name

A String for the name of the WebGL extension to enable.

Return value

A WebGL extension object, or null if name does not match (case-insensitive) to one of the strings in WebGLRenderingContext.getSupportedExtensions.

Examples

Once a WebGL extension is enabled, you are able to use the methods, properties or constants that this extension object provides.

js
const canvas = document.getElementById("canvas");
gl = canvas.getContext("webgl");

gl.getExtension("WEBGL_lose_context").loseContext();

WebGL extensions

Extensions for the WebGL API are registered in the WebGL Extension Registry. They are also listed in our WebGL API reference.

Specifications

Specification
WebGL Specification
# 5.14.14

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
getExtension
Chrome – Full support
Chrome 9 (Release date: 2011-02-03)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 4 (Release date: 2011-03-22)
footnote Full support
Opera – Full support
Opera 12 (Release date: 2012-06-14)
footnote Full support
Safari – Full support
Safari 5.1 (Release date: 2011-07-20)
footnote Full support
Chrome Android – Full support
Chrome Android 25 (Release date: 2013-02-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 12 (Release date: 2012-02-25)
footnote Full support
Safari on iOS – Full support
Safari on iOS 8 (Release date: 2014-09-17)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1.5 (Release date: 2013-09-25)
footnote Full support
WebView Android – Full support
WebView Android 4.4.3 (Release date: 2014-06-02)
footnote Full support
WebView on iOS – Full support
WebView on iOS 8 (Release date: 2014-09-17)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also