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The WebContextEvent interface is part of the WebGL API and is an interface for an event that is generated in response to a status change to the WebGL rendering context.
Inheritance
This interface inherits properties and methods from its parent interface, Event
.
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a:hover text { fill: #0095DD; pointer-events: all;}
Properties
This interface inherits properties from its parent interface, Event
.
WebGLContextEvent.statusMessage
- A read-only property containing additional information about the event.
Methods
This interface doesn't define any own methods, but inherits methods from its parent interface, Event
.
Examples
With the help of the WEBGL_lose_context
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 1.0 The definition of 'WebGLContextEvent' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 9 | 49 (49) | 11 | 12 | 5.1 |
Available in workers | No support | 49 (49) [1] | No support | No support | No support |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | 25 | 49.0 (49) | ? | 12 | 8.1 |
Available in workers | No support | No support | 49.0 (49) [1] | No support | No support | No support |
[1] This feature is behind a feature preference setting. In about:config, set gfx.offscreencanvas.enabled
to true
.