VRDisplayCapabilities

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The VRDisplayCapabilities interface of the WebVR API describes the capabilities of a VRDisplay — its features can be used to perform VR device capability tests, for example can it return position information.

This interface is accessible through the VRDisplay.capabilities property.

Properties

VRDisplayCapabilities.canPresent Read only
Returns a Boolean stating whether the VR display is capable of presenting content (e.g. through an HMD).
VRDisplayCapabilities.hasExternalDisplay Read only
Returns a Boolean stating whether the VR display is separate from the device's primary display.
VRDisplayCapabilities.hasOrientation  Read only
Returns a Boolean stating whether the VR display can track and return orientation information.
VRDisplayCapabilities.hasPosition Read only
Returns a Boolean stating whether the VR display can track and return position information.
VRDisplayCapabilities.maxLayers Read only
Returns a number indicating the maximum number of VRLayers that the VR display can present at once (e.g. the maximum length of the array that VRDisplay.requestPresent() can accept.)

Examples

function reportDisplays() {
  navigator.getVRDisplays().then(function(displays) {
    for(var i = 0; i < displays.length; i++) {
      var cap = displays[i].capabilities;
      // cap is a VRDisplayCapabilities object
      var listItem = document.createElement('li');
      listItem.innerHTML = '<strong>Display ' + (i+1) + '</strong>'
                   + '<br>VR Display ID: ' + displays[i].displayId
                   + '<br>VR Display Name: ' + displays[i].displayName
                   + '<br>Display can present content: ' + cap.canPresent
                   + '<br>Display is separate from the computer\'s main display: ' + cap.hasExternalDisplay
                   + '<br>Display can return position info: ' + cap.hasPosition
                   + '<br>Display can return orientation info: ' + cap.hasOrientation
                   + '<br>Display max layers: ' + cap.maxLayers;
      list.appendChild(listItem);
    }
  });
}

Specifications

Specification Status Comment
WebVR 1.1
The definition of 'VRDisplayCapabilities' in that specification.
Editor's Draft Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes1 2 Yes

553

584

No ? ?
canPresent Yes1 2 Yes

553

584

No ? ?
hasExternalDisplay Yes1 2 Yes

553

584

No ? ?
hasPosition Yes1 2 Yes

553

584

No ? ?
hasOrientation Yes1 2 Yes

553

584

No ? ?
maxLayers Yes1 2 Yes

553

584

No ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support No Yes5 ? ? No ? ?
canPresent No Yes5 ? ? No ? ?
hasExternalDisplay No Yes5 ? ? No ? ?
hasPosition No Yes5 ? ? No ? ?
hasOrientation No Yes5 ? ? No ? ?
maxLayers No Yes5 ? ? No ? ?

1. Only works on desktop in an experimental version of Chrome (other builds won't return any devices when Navigator.getVRDisplays() is invoked).

2. This feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.

3. Windows support was enabled in Firefox 55.

4. macOS support was enabled in Firefox 58.

5. Currently supported only by Google Daydream.

See also

Document Tags and Contributors

 Contributors to this page: tocretpa, fscholz, jpmedley, chrisdavidmills, Sheppy
 Last updated by: tocretpa,