WPT details: https://wpt.fyi/results/webxr/depth-sensing?label=experimental&label=master&aligned
Exposes several new mechanisms to customize the behavior of the depth sensing feature within a WebXR session, with the goal of improving the performance of the generation or consumption of the depth buffer. The key mechanisms exposed are: the ability to request the raw or smooth depth buffer, the ability to request that the runtime stop or resume providing the depth buffer, and the ability to expose a depth buffer that does not align with the user's view exactly, so that the user agent does not need to perform unnecessary re-projections every frame.
Web Developers use the depth sensing feature for a number of reasons; however, the existing shape of the API needs some tweaking to accommodate for changes in hardware (non-eye-aligned depth buffers), and to improve performance of developer experiences who often don't need depth sensing during the full scope of their experience.
Docs: https://docs.google.com/document/d/1Nx3hCHqq8UZ6E1nxctmkr6BBQKwf3AgIai7WVsQ_nUM/edit?usp=sharing
Samples: https://immersive-web.github.io/webxr-samples/layers-samples/proj-multiview-occlusion.html https://immersive-web.github.io/webxr-samples/proposals/phone-ar-depth-gpu.html https://immersive-web.github.io/webxr-samples/proposals/phone-ar-depth.html
Explainers: https://github.com/immersive-web/depth-sensing/blob/main/explainer.md