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
An XRWebGLDepthInformation
object.
Exceptions
NotSupportedError
DOMException
-
Thrown if
"depth-sensing"
is not in the list of enabled features for thisXRSession
. InvalidStateError
DOMException
-
Thrown if the
XRFrame
is not active nor animated. Obtaining depth information is only valid within therequestAnimationFrame()
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
Specification |
---|
WebXR Depth Sensing Module # dom-xrwebglbinding-getdepthinformation |
Browser compatibility
BCD tables only load in the browser