From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: VRDisplay.requestAnimationFrame()
+slug: Web/API/VRDisplay/requestAnimationFrame
+translation_of: Web/API/VRDisplay/requestAnimationFrame
+---
+<div>{{APIRef("WebVR API")}}{{SeeCompatTable}}</div>
+
+<p>The <code><strong>requestAnimationFrame()</strong></code> method of the {{domxref("VRDisplay")}} interface is a special implementation of {{domxref("Window.requestAnimationFrame")}} containing a callback function that will be called every time a new frame of the <code>VRDisplay</code> presentation is rendered:</p>
+
+<ul>
+ <li>When the <code>VRDisplay</code> is not presenting a scene, this is functionally equivalent to {{domxref("Window.requestAnimationFrame")}}.</li>
+ <li>When the VRDisplay is presenting, the callback is called at the native refresh rate of the <code>VRDisplay</code>.</li>
+</ul>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="brush: js">var handle = vrDisplayInstance.requestAnimationFrame(<em>callback</em>);
+</pre>
+
+<h3 id="Parameters">Parameters</h3>
+
+<dl>
+ <dt>callback</dt>
+ <dd>A callback function that will be called every time a new frame of the <code>VRDisplay</code> presentation is rendered.</dd>
+</dl>
+
+<h3 id="Return_value">Return value</h3>
+
+<p>A long representing the handle of the <code>requestAnimationFrame()</code> call. This can then be passed to a {{domxref("VRDisplay.cancelAnimationFrame()")}} call to unregister the callback.</p>
+
+<h2 id="Examples">Examples</h2>
+
+<pre>TBD.</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('WebVR', '#dom-vrdisplay-requestanimationframe', 'requestAnimationFrame()')}}</td>
+   <td>{{Spec2('WebVR')}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari (WebKit)</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Phone</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+   <th>Chrome for Android</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/WebVR_API">WebVR API homepage</a>.</li>
+ <li><a href="http://mozvr.com/">MozVr.com</a> — demos, downloads, and other resources from the Mozilla VR team.</li>
+</ul>
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