VRLayerInit

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

The 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() method.

Properties

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() is called.

Examples

// 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
}

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

Specifications

Specification Status Comment
WebVR 1.1
The definition of 'VRLayerInit' in that specification.
Draft Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No Yes

555

606

No ? ?
leftBounds No Yes

555

606

No ? ?
rightBounds No Yes

555

606

No ? ?
source No Yes

555

606

No ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No561 2 3 4 ? ? ? ?6.0
leftBounds No561 2 3 4 ? ? ? ?6.0
rightBounds No561 2 3 4 ? ? ? ?6.0
source No561 2 3 4 ? ? ? ?6.0

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

2. Daydream View supported in Chrome 56.

3. Google Cardboard supported in Chrome 57.

4. From version 56: this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.

5. Windows support was enabled in Firefox 55.

6. macOS support was enabled in Firefox 60.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, Squareys, chrisdavidmills
 Last updated by: fscholz,