Web/API/WEBGL lose context/restoreContext

The WEBGL_lose_context.restoreContext() method is part of the WebGL API and allows you to simulate restoring the context of a WebGLRenderingContext object.

Syntax

gl.getExtension('WEBGL_lose_context').restoreContext();

Errors thrown

INVALID_OPERATION if the context was not lost.

Examples

With this method, you can simulate the webglcontextrestored event:

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');

canvas.addEventListener('webglcontextrestored', function(e) {
  console.log(e); 
}, false);

gl.getExtension('WEBGL_lose_context').restoreContext();

Specifications

Specification	Status	Comment
WEBGL_lose_contextThe definition of 'WEBGL_lose_context.loseContext' in that specification.	Recommendation	Initial definition.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`restoreContext`	Chrome Full support Yes	Edge Full support 17	Firefox Full support 22 Full support 22 No support 19 — 58 Prefixed' Prefixed' Implemented with the vendor prefix: MOZ_	IE ?	Opera Full support Yes	Safari ?	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android ?	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
Requires a vendor prefix or different name for use.': Requires a vendor prefix or different name for use.