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.
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:
var canvas = document.getElementById("canvas"); var gl = canvas.getContext("webgl"); canvas.addEventListener("webglcontextlost", function(e) { console.log(e); }, false); gl.getExtension('WEBGL_lose_context').loseContext(); // WebGLContextEvent event with type "webglcontextlost" is logged.
Specifications
Specification | Status | Comment |
---|---|---|
WEBGL_lose_context The definition of 'WEBGL_lose_context' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | ? | 22 (22) [1] | ? | ? | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? | ? |
[1] This extension was prefixed with MOZ_
from version 19 to version 21.