VRLayerInit

这是 实验性技术
检查 浏览器兼容性表格 在生产中使用这之前。

VRLayerInit interface (dictionary) of the WebVR API represents a content layer (an HTMLCanvasElement or OffscreenCanvas ) that you want to present in a VR display.

You can retrieve VRLayerInit objects using VRDisplay.getLayers() , and present them using the VRDisplay.requestPresent() 方法。

特性

VRLayerInit.leftBounds
Defines the left texture bounds of the canvas whose contents will be presented by the VRDisplay .
VRLayerInit.rightBounds
Defines the right texture bounds of the canvas whose contents will be presented by the VRDisplay .
VRLayerInit.source
Defines the canvas whose contents will be presented by the VRDisplay when VRDisplay.submitFrame() 被调用。

范例

// currently returns an empty array
var layers = vrDisplay.getLayers();
if(navigator.getVRDisplays) {
  console.log('WebVR 1.1 supported');
  // Then get the displays attached to the computer
  navigator.getVRDisplays().then(function(displays) {
    // If a display is available, use it to present the scene
    if(displays.length > 0) {
      vrDisplay = displays[0];
      console.log('Display found');
      // Starting the presentation when the button is clicked: It can only be called in response to a user gesture
      btn.addEventListener('click', function() {
        vrDisplay.requestPresent([{ source: canvas }]).then(function() {
          console.log('Presenting to WebVR display');
          // Here it returns an array of VRLayerInit objects
          var layers = vrDisplay.getLayers();
          ...
        });
      });
    }
  });
}
					

VRLayerInit objects look something like this:

{
  leftBounds : [ ... ],
  rightBounds: [ ... ],
  source: canvasReference
}
					

注意 : The canvasReference refers to the <canvas> element itself, not the WebGL context associated with the canvas. The other two members are arrays

规范

规范 状态 Comment
WebVR 1.1
The definition of 'VRLayerInit' in that specification.
草案 初始定义

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
VRLayerInit
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
leftBounds
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
rightBounds
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
source
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.

图例

完整支持
完整支持
不支持
不支持
兼容性未知
兼容性未知
实验。期望将来行为有所改变。
实验。期望将来行为有所改变。
弃用。不要用于新网站。
弃用。不要用于新网站。
见实现注意事项。
用户必须明确启用此特征。
用户必须明确启用此特征。

另请参阅