webgl extension
WEBGL_lose_context extension
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 getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.
[!NOTE] This extension is available to both,
WebGL1andWebGL2contexts.
Instance methods
loseContext()- : Simulates losing the context.
restoreContext()- : Simulates restoring the context.
Examples
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();
// WebGLContextEvent event with type "webglcontextlost" is logged.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.