This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
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 (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | No support[1] | (Yes) | 55 (55)[2] | No support | No support | No support |
Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android | Samsung Internet for GearVR |
---|---|---|---|---|---|---|---|---|
Basic support | No support | No support | 55.0 (55) | No support | No support | No support | (Yes)[3] | (Yes) |
[1] API Available on all platforms behind a flag, but currently only works on desktop in an experimental version of Chrome (other builds won't return any devices when Navigator.getVRDisplays()
is invoked).
[2] Currently only Windows support is enabled by default. Mac support is available in Firefox Nightly.
[3] Currently supported only by Google Daydream.
See also
- WebVR API homepage
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.