2019-10-22-Immersive_Web_Working_Group_Teleconference-agenda.md

Call Agenda

This agenda can be viewed and updated on Github. Minutes are avail from irc scribe.

If you would like to add an item to the agenda or volunteer to scribe please open a pull request against this agenda.

• Check out the bottom of the agenda for issues which are looking for help.
• Discussion about XRSessionModes: immersive-web/webxr-ar-module#28, immersive-web/webxr-ar-module#38

Finalize the enum move, and discuss Brandon's comment about having two immersive modes

• webxr-ar-module#29 Should handheld and headset AR use the same XRSessionMode? + webxr-ar-module#9 Enable developers to distinguish between screen-based and head-worn sessions (Manish)

Discuss how best to expose that the UI is screen-based vs headworn, and whether or not we should block on DOM overlay.

• webxr-gamepads-module#18 Ensure that the returned gamepad object is live requested by NellWaliczek

Agenda to confirm the expected behavior from the Gamepad folks and get consensus on which approach we intend to take.

• webxr-input-profiles#79 Do fallback profiles need to contain only subset of componenents? requested by NellWaliczek

Filed #100 to specifically address the Oculus Touch profile.

To gather opinions on what the general guidelines ought to be

• webxr-input-profiles#82 UA reserved buttons requested by NellWaliczek

I'll take a poke at the right schema changes to support tracking this in the registry. In the meanwhile...

To learn which buttons should be documented as reserved for each profile

• webxr-input-profiles#14 Add behavior for unknown gamepads requested by NellWaliczek

When this issue was originally filed, we were still figuring out the details of the profiles attribute. Now that we've gotten further along, a few other things should be considered:

1. In some cases the UA will be unable to identify a vendor-prefixed string. Should profiles = [] in that case? What if a generic prefixed string can be identified?
2. In some cases the UA will allow users to hide the actual vendor-prefixed information. Should profiles=[] or should a generic be reported? If so, is it up to the UA to decide how specific that generic is (i.e. if generic-trigger-grip is valid, should generic-trigger ever be returned?)
3. If we decide to add squeeze events, does the profiles array need to indicate that this event can be fired?
4. If we allow profiles to be an empty array, do we have any concerns about developers falling into a pit of failure?
5. Is there any situation in which "" would be a valid profile id?

Immersive Web Working Group Teleconference - 2019-10-22

San Francisco (U.S.A. - California)	Tuesday, October 22, 12:00 PM PDT
Boston (U.S.A. - Massachusetts)	Tuesday, October 22, 3:00 PM EDT
London (United Kingdom - England)	Tuesday, 22 October, 20:00 BST
Paris (France)	Tuesday, 22 October, 21:00 CEST
Tokyo (Japan)	Wednesday, 23 October, 04:00 GMT+9
Corresponding UTC (GMT)	Tuesday, 22 October, 19:00 UTC

Logistics

Chair: Chris Wilson, Ada Rose Cannon

Scribe:

IRC: irc.w3.org:6667 #immersive-web Instructions

Call Details can be found on the Internal Mailing List

If you are unable to login to view the call details please ask on the IRC before the call.

For assistance go to https://mit.webex.com/mit/mc and on the left navigation bar, click "Support".

Help Wanted

Here are some issues which are good issues to get involved in, if you have taken responsibility for one leave a comment in the issue:

• webxr#225 Behavior of window.requestAnimationFrame and window.requestIdleCallback when presenting
• webvr-polyfill-dpdb#34 Create a helper script/web page for generating values for a new device
• webxr#603 What happens if a canvas with an xrCompatible context is attached to the DOM?
• webxr#736 Should calling XRSession.requestAnimationFrame in a Window.animationFrameCallback be banned?
• webxr#776 Remove unnecessary or redundant information from "Security, Privacy, and Comfort Considerations"
• webxr-input-profiles#69 Resizing the window changes the model viewer's aspect ratio
• webxr-gamepads-module#16 Add link to the registry
• webxr#854 Result of calling checkFramebufferStatus on an opaque framebuffer
• webxr#856 Do opaque framebuffers have a reference to their XR session?
• webxr#860 What is a "valid feature descriptor"
• webxr#877 Note somewhere that you should be always be queueing up the next rAF within rAF
• webxr#880 Corrections and clarifications for description/steps for updateRenderState()
• webxr#891 Clarify semantics of preserveDrawingBuffer