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+---
+title: WebGLSync
+slug: Web/API/WebGLSync
+translation_of: Web/API/WebGLSync
+---
+<div>{{APIRef("WebGL")}} {{SeeCompatTable}}</div>
+
+<p>The <strong><code>WebGLSync</code></strong> interface is part of the <a href="/en-US/docs/Web/API/WebGL_API">WebGL 2</a> API and is used to synchronize activities between the GPU and the application.</p>
+
+<p>When working with <code>WebGLSync</code> objects, the following methods of the {{domxref("WebGL2RenderingContext")}} are useful:</p>
+
+<ul>
+ <li>{{domxref("WebGL2RenderingContext.fenceSync()")}}</li>
+ <li>{{domxref("WebGL2RenderingContext.deleteSync()")}}</li>
+ <li>{{domxref("WebGL2RenderingContext.isSync()")}}</li>
+ <li>{{domxref("WebGL2RenderingContext.clientWaitSync()")}}</li>
+ <li>{{domxref("WebGL2RenderingContext.waitSync()")}}</li>
+ <li>{{domxref("WebGL2RenderingContext.getSyncParameter()")}}</li>
+</ul>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="创建一个WebGLSync对象">创建一个WebGLSync对象</h3>
+
+<p>in this example, <code>gl</code> must be a {{domxref("WebGL2RenderingContext")}}. <code>WebGLSync</code> objects are not available in WebGL 1.</p>
+
+<pre class="brush: js">var sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('WebGL2', "#3.4", "WebGLSync")}}</td>
+   <td>{{Spec2('WebGL2')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+
+<p>{{Compat("api.WebGLSync.WebGLSync")}}</p>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{domxref("WebGLRenderingContext.finish()")}}</li>
+</ul>