The WEBGL_lose_context extension is part of the WebGL API and exposes functions to simulate losing and restoring a WebGLRenderingContext
.
WebGL extensions are available using the WebGLRenderingContext.getExtension()
method. For more information, see also Using Extensions in the WebGL tutorial.
Note: This extension is available to both, WebGL1 and WebGL2 contexts.
With this extension, you can simulate the webglcontextlost
and webglcontextrestored
events:
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
canvas.addEventListener("webglcontextlost", (event) => {
console.log(event);
});
gl.getExtension("WEBGL_lose_context").loseContext();