WEBGL_lose_context.restoreContext()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
WEBGL_lose_context.restoreContext() 属于 WebGL API，一般用来模拟 WebGLRenderingContext 的上下文恢复。
语法
gl.getExtension('WEBGL_lose_context').restoreContext();
抛出错误
INVALID_OPERATION上下文尚未丢失
示例
你可以用这个方法模拟 webglcontextrestored 事件：
js
var canvas = document.getElementById("canvas");
var gl = canvas.getContext("webgl");
canvas.addEventListener(
"webglcontextrestored",
function (e) {
console.log(e);
},
false,
);
gl.getExtension("WEBGL_lose_context").restoreContext();
规范
| Specification |
|---|
| WebGL WEBGL_lose_context Khronos Ratified Extension Specification |