Web/API/WEBGL lose context

From Get docs


The WEBGL_lose_context extension is part of the WebGL API and exposes functions to simulate losing and restoring a WebGLRenderingContext.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.

Availability: This extension is available to both, WebGL1 and WebGL2 contexts.


Methods

WEBGL_lose_context.loseContext()
Simulates losing the context.
WEBGL_lose_context.restoreContext()
Simulates restoring the context.

Examples

With this extension, you can simulate the webglcontextlost and webglcontextrestored events:

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

canvas.addEventListener('webglcontextlost', (event) => {
  console.log(event); 
});

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

// WebGLContextEvent event with type "webglcontextlost" is logged.

Specifications

Specification Status Comment
WEBGL_lose_contextThe definition of 'WEBGL_lose_context' 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
loseContext 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.


See also