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Showing content from http://developer.mozilla.org/en-US/docs/Web/API/WebGLContextEvent below:

WebGLContextEvent - Web APIs | MDN

WebGLContextEvent

Baseline Widely available *

Note: This feature is available in Web Workers.

The WebGLContextEvent 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.

Event WebGLContextEvent Constructor
WebGLContextEvent()

Creates a new WebGLContextEvent object.

Instance properties

This interface inherits properties from its parent interface, Event.

WebGLContextEvent.statusMessage

A read-only property containing additional information about the event.

Instance 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:

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

canvas.addEventListener(
  "webglcontextlost",
  (e) => {
    console.log(e);
  },
  false,
);

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

// WebGLContextEvent event with type "webglcontextlost" is logged.
Specifications Browser compatibility See also

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