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XRWebGLBinding: getDepthInformation() method

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

The getDepthInformation() method of the XRWebGLBinding interface returns an XRWebGLDepthInformation object containing WebGL depth information.

Syntax

js

getDepthInformation(view)

Parameters

view

An XRView object obtained from a viewer pose.

Return value

Exceptions

NotSupportedError DOMException

Thrown if "depth-sensing" is not in the list of enabled features for this XRSession.

InvalidStateError DOMException

Thrown if the XRFrame is not active nor animated. Obtaining depth information is only valid within the requestAnimationFrame() callback.

InvalidStateError DOMException

Thrown if the session's depthUsage is not "gpu-optimized".

Examples

Obtaining WebGL depth information

js

const canvasElement = document.querySelector(".output-canvas");
const gl = canvasElement.getContext("webgl");
await gl.makeXRCompatible();

// Make sure to request a session with depth-sensing enabled
const session = navigator.xr.requestSession("immersive-ar", {
  requiredFeatures: ["depth-sensing"],
  depthSensing: {
    usagePreference: ["gpu-optimized"],
    formatPreference: ["luminance-alpha"],
  },
});

const glBinding = new XRWebGLBinding(session, gl);

// …

// Obtain depth information in an active and animated frame
function rafCallback(time, frame) {
  session.requestAnimationFrame(rafCallback);
  const pose = frame.getViewerPose(referenceSpace);
  if (pose) {
    for (const view of pose.views) {
      const depthInformation = glBinding.getDepthInformation(view);
      if (depthInformation) {
        // Do something with the depth information
        // gl.bindTexture(gl.TEXTURE_2D, depthInformation.texture);
        // …
      }
    }
  }
}

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
getDepthInformation 90 90 No No 76 No No 90 No 64 No 15.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/XRWebGLBinding/getDepthInformation