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The webglcontextlost
event of the WebGL API is fired if the user agent detects that the drawing buffer associated with a WebGLRenderingContext
object has been lost.
Bubbles | Yes |
Cancelable | Yes |
Target objects | HTMLCanvasElement |
Interface | WebGLContextEvent |
Example
With the help of the WEBGL_lose_context
extension, you can simulate the webglcontextlost
event:
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(); // "webglcontextlost" event is logged.
Inheritance
The webglcontextlost
event implements the WebGLContextEvent
interface, which inherits from Event
. You can use the properties and methods defined on these interfaces.
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Specifications
Specification | Status | Comment |
---|---|---|
WebGL 1.0 The definition of 'webglcontextlost' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 9 | 4.0 (2.0) | 11 | 12 | 5.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | 25 | 4.0 (2.0) | ? | 12 | 8.0 |