WebGLContextEvent

Available in 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.

Constructor

• WebGLContextEvent()
  • : Creates a new WebGLContextEvent object.

Instance properties

This interface inherits properties from its parent interface, Event.

• 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);
});

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

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

Specifications

Browser compatibility

See also

• isContextLost()
• WEBGL_lose_context, loseContext(), restoreContext()
• Events: webglcontextlost, webglcontextrestored, webglcontextcreationerror