XRLightProbe

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

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

The XRLightProbe interface of the WebXR Device API contains lighting information at a given point in the user's environment. You can get an XRLighting object using the XRSession.requestLightProbe() method.

This object doesn't itself contain lighting values, but it is used to collect lighting states for each XRFrame. See XRLightEstimate for the estimated lighting values for an XRLightProbe.

EventTarget XRLightProbe

Instance properties

XRLightProbe.onreflectionchange

Event handler property for the reflectionchange event.

XRLightProbe.probeSpace Read only Experimental

An XRSpace tracking the position and orientation the lighting estimations are relative to.

Instance methods

None.

Events

reflectionchange Experimental

Fired each time the estimated reflection cube map changes. (This happens when the user moves around and the environment's lighting changes.)

Examples

Getting an XRLightProbe object for a session

Use the XRSession.requestLightProbe() method to get a light probe.

js
const lightProbe = await xrSession.requestLightProbe();

Getting a probe pose within an XRFrame

Pass the light probe's probeSpace to XRFrame.getPose() to get a light probe for a pose.

js
const probePose = xrFrame.getPose(lightProbe.probeSpace, xrReferenceSpace);

Using the reflectionchange event

Pass XRLightProbe to get a reflection cube map whenever the reflectionchange event fires. See also XRWebGLBinding.getReflectionCubeMap().

js
const glBinding = new XRWebGLBinding(xrSession, gl);
const lightProbe = await xrSession.requestLightProbe();
let glCubeMap = glBinding.getReflectionCubeMap(lightProbe);

lightProbe.addEventListener("reflectionchange", () => {
  glCubeMap = glBinding.getReflectionCubeMap(lightProbe);
});

Specifications

Specification
WebXR Lighting Estimation API Level 1
# xrlightprobe-interface

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
XRLightProbe
Experimental
probeSpace
Experimental
reflectionchange event
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.

See also