VRDisplay.requestAnimationFrame()

Deprecated

Avoid using this feature in new projects. Development of the WebVR API halted in favor of WebXR. This feature may be a candidate for removal from web standards or browsers.

Consider using the following features instead: WebXR.

了解更多
查看完整兼容性

实验性: 这是一项实验性技术
在将其用于生产之前，请仔细检查浏览器兼容性表格。

The requestAnimationFrame() method of the VRDisplay interface is a special implementation of Window.requestAnimationFrame containing a callback function that will be called every time a new frame of the VRDisplay presentation is rendered:

When the VRDisplay is not presenting a scene, this is functionally equivalent to Window.requestAnimationFrame.
When the VRDisplay is presenting, the callback is called at the native refresh rate of the VRDisplay.

Syntax

var handle = vrDisplayInstance.requestAnimationFrame(callback);

Parameters

callback: A callback function that will be called every time a new frame of the VRDisplay presentation is rendered.

Return value

A long representing the handle of the requestAnimationFrame() call. This can then be passed to a VRDisplay.cancelAnimationFrame() call to unregister the callback.