WEBGL_lose_context: restoreContext() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The WEBGL_lose_context.restoreContext() method is part of the WebGL API and allows you to simulate
restoring the context of a WebGLRenderingContext object.
Syntax
js
restoreContext()
Parameters
None.
Return value
None (undefined).
Exceptions
Browsers may not report WebGL errors by default. WebGL's error reporting works by calling getError() and checking for errors. The following exceptions may be thrown:
INVALID_OPERATION-
Thrown if the context was not lost.
Examples
With this method, you can simulate the
webglcontextrestored
event:
js
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
canvas.addEventListener(
"webglcontextrestored",
(e) => {
console.log(e);
},
false,
);
gl.getExtension("WEBGL_lose_context").restoreContext();
Specifications
| Specification |
|---|
| WebGL WEBGL_lose_context Khronos Ratified Extension Specification |
Browser compatibility
BCD tables only load in the browser