The requestLightProbe() method of the XRSession interface returns a Promise that resolves with an XRLightProbe object that estimates lighting information at a given point in the user's environment.

options Optional

An object containing configuration options, specifically:

reflectionFormat

The internal reflection format indicating how the texture data is represented, either srgba8 (default value) or rgba16f. See also XRSession.preferredReflectionFormat.

A Promise that resolves with an XRLightProbe object.

Rather than throwing true exceptions, requestLightProbe() rejects the returned promise with a DOMException, specifically, one of the following:

NotSupportedError DOMException

Thrown if lighting-estimation is not an enabled feature in XRSystem.requestSession() or if the reflectionFormat is not srgb8 or the preferredReflectionFormat.

InvalidStateError DOMException

Thrown if the session has already ended.

The default format is srgb8, however, some rendering engines may use other (high dynamic range) formats. You can request the light probe with XRSession.preferredReflectionFormat which reports the preferred internal format.

const lightProbe = await xrSession.requestLightProbe({
  reflectionFormat: xrSession.preferredReflectionFormat,
});

• XRSession.preferredReflectionFormat