在此页

• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

webglcontextrestored event of the WebGL API is fired if the user agent restores the drawing buffer for a WebGLRenderingContext 对象。

Once the context is restored, WebGL resources such as textures and buffers that were created before the context was lost are no longer valid. You need to reinitialize the state of your WebGL application and recreate resources.

冒泡	Yes
可取消	Yes
接口	WebGLContextEvent
事件处理程序特性	none

范例

With the help of the WEBGL_lose_context extension, you can simulate the webglcontextrestored event:

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();
// "webglcontextrestored" event is logged.
					

规范

规范	状态	注释
WebGL 1.0 The definition of 'webglcontextrestored' in that specification.	推荐	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
webglcontextrestored event	Chrome 9	Edge 12	Firefox 4	IE 11	Opera 12	Safari 5.1	WebView Android Yes	Chrome Android 25	Firefox Android 4	Opera Android 12	Safari iOS 8	Samsung Internet Android 1.5

图例

完整支持

完整支持

另请参阅

• WebGLContextEvent
• WebGLRenderingContext.isContextLost()
• WEBGL_lose_context , WEBGL_lose_context.loseContext() , WEBGL_lose_context.restoreContext()

元数据

• 最后修改： Mar 18, 2019

相关话题

1. HTMLCanvasElement
2. 特性

   1. height
   2. mozOpaque
   3. width
3. 方法

   1. captureStream()
   2. getContext()
   3. mozFetchAsStream()
   4. mozGetAsFile()
   5. toBlob()
   6. toDataURL()
   7. transferControlToOffscreen()
4. 事件

   1. webglcontextlost
5. 继承：

   1. HTMLElement
   2. 元素
   3. 节点
   4. EventTarget