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.


Defines the left texture bounds of the canvas whose contents will be presented by the VRDisplay.
Defines the right texture bounds of the canvas whose contents will be presented by the VRDisplay.
Defines the canvas whose contents will be presented by the VRDisplay when VRDisplay.submitFrame() is called.


// 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


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

Browser compatibility

BCD tables only load in the browser

See also