This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The rightBounds
property of the VRLayerInit
interface (dictionary) defines the right texture bounds of the canvas whose contents will be presented by the VRDisplay
.
Syntax
var myVRLayerInit = { };
myVRLayerInit.rightBounds = [0.5, 0.0, 0.5, 1.0]
;
Value
An array of four floating point values, which can take values from 0.0–1.0:
- The left offset of the bounds.
- The top offset of the bounds.
- The width of the bounds.
- The height of the bounds.
If leftBounds
is not specified in the dictionary, the default value used is [0.5, 0.0, 0.5, 1.0]
.
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 'rightBounds' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | Yes1 2 | Yes | 553 584 | No | ? | ? |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 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
- WebVR API homepage
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.