BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.5.8//EN CALSCALE:GREGORIAN LAST-MODIFIED:20240327T002108Z BEGIN:VTIMEZONE TZID:America/Los_Angeles X-MICROSOFT-CDO-TZID:13 BEGIN:STANDARD DTSTART:20231105T090000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST END:STANDARD BEGIN:STANDARD DTSTART:20241103T090000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST END:STANDARD BEGIN:DAYLIGHT DTSTART:20240310T100000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:b4045870-50be-44f7-b2a0-f45ba8418427 DTSTAMP:20240327T002108Z SUMMARY:Immersive Web Working Group Calls DTSTART;TZID=America/Los_Angeles:20240402T120000 DTEND;TZID=America/Los_Angeles:20240402T130000 DESCRIPTION:https://www.w3.org/events/meetings/b4045870-50be-44f7-b2a0-f45b a8418427/20240402T120000/\n\nHi IW\,\n\nWe are canceling this occurance of our meeting since it is very close to our Face 2 Face meeting. \n\nHave a nice week!\n\nAgenda: https://github.com/immersive-web/administrivia/blob /main/meetings/2024/2024-03-05-Immersive_Web_Working_Group_Teleconference- agenda.md\n\nAgenda\n\n### Call Agenda\n\nThis agenda can be viewed and up dated on [Github](https://github.com/immersive-web/administrivia/blob/main /meetings/wg/2024-03-05-Immersive_Web_Working_Group_Teleconference-agenda. md).\n\nIf you would like to add an item to the agenda or volunteer to scr ibe please open a pull request against this agenda.\n\n* [webxr-hand-input #123 Reapply "Allow generic-hand"](https://github.com/immersive-web/webxr- hand-input/pull/123) [requested by AdaRoseCannon](https://github.com/immer sive-web/webxr-hand-input/pull/123#issuecomment-1936728918)\n> FYI\n\n* [a dministrivia#205 Tag F2F issues](https://github.com/immersive-web/administ rivia/issues/205) - Yonet\n> Please tag the issues you would like to discu ss on F2F meeting.\n >Feel free to create new issues and don't forget to r svp. \n\n* [webxr#988 Are 8-bit outputs sRGB encoded?](https://github.com/ immersive-web/webxr/issues/988) [requested by cabanier](https://github.com /immersive-web/webxr/issues/988#issuecomment-1933017426)\n> > > The browse r creates linear output values. The compositor is supposed to treat it lik e sRGB and not do any conversion.\n>> \n>> That sounds wrong\, and I don't know if it's just a terminology mismatch.\n>\n>That may be "wrong" but th at is how browsers work.\n>\n>> I think we're in agreement that the web ap p writes its output into the opaque framebuffer using sRGB encoding\, same as if it was targeting a 2D display. The browser needs to send this data to the system compositor\, and basically has two choices:\n>\n>No\, we are not in agreement. The framebuffer is in linear RGB same as WebGL. The swa pchain is in sRGB.\n>\n>> When you say "the browser creates linear output values"\, do you mean it produces numbers that the compositor can use as-i s? That's correct assuming that the compositor is expecting sRGB.\n>\n>No\ , the browser creates linear values. Technically this is *wrong* but that is how they're exposed to the page.\n>Browsers are not alone in making thi s error\; there were enough games that made the same assumption that Oculu s' [old API](https://github.com/MortimerGoro/ovr-mobile-sys/blob/master/Vr Api/Include/VrApi_Types.h#L543) had a flag to work around this.\n>\n>> > N o\, that would be incorrect. The default of the layers API should match th e default WebGL canvas behavior which is rgb\; regular WebXR has the same default.\n>> \n>> I don't get this part. Regular WebGL canvas is interpret ed as sRGB\, that's why for example the recommended Three.JS rendering set up puts a `gl_FragColor = linearToSRGB(gl_FragColor)` equivalent at the en d of shaders. \n>\n>It only does that conditionally and looking at the cod e\, only for sRGB render targets.\n>\n>> I think it would be wrong if a La yers extension XRProjectionLayer with colorFormat=RGBA would treat the dat a as sRGB and for example pass it on to the compositor without conversion to a GL_SRGB8_ALPHA8 OpenXR swapchain buffer. While that would match the d efault WebXR rendering\, I think it doesn't make sense - what would colorF ormat=SRGB8 do differently then? To the best of my knowledge\, the default WebXR (and 2D canvas) rendering is equivalent to SRGB8 and would match be ing used with an OpenXR SRGB8 swapchain.\n>\n>No\, changing the default to sRGB would break each WebXR experience because now drawing with RGB will get gamma correction applied.\n>I'm happy to discuss this further during a call.\n>\n> discuss linear vs sRGB\n\n* [webxr#1358 Detecting if an `XRIn putSource` is an auxiliary or a primary input source](https://github.com/i mmersive-web/webxr/issues/1358) [requested by cabanier](https://github.com /immersive-web/webxr/issues/1358#issuecomment-1938928307)\n> I worry that adding inputsources is confusing for authors and might break certain exper iences.\n>\n>Since every site needs to be updated anyway\, maybe we can in troduce a new attribute (`secondaryInputSources`?) that contains all the i nput sources that don't generate input events.\n>\n> should we move second ary input sources to their own attribute?\n\n* [webxr#1360 Indicate "prefe rred" immersive mode](https://github.com/immersive-web/webxr/issues/1360) - cabanier\n> On most HMDs\, the user can choose either a VR environment o r passthrough.\n >OpenXR offers an API to convey a preferred immersive mod e\; basically it returns if the user is in AR or VR. An application could use this to continue in this mode.\n\n### Immersive Web Working Group Tele conference - 2024-03-05\n\n\n
San Francisco (U.S.A. - Calif ornia) Tuesday\, March 5 at 11:00 AM PST\n
Boston (U.S.A. - M assachusetts) Tuesday\, March 5 at 2:00 PM EST\n
London (Unit ed Kingdom - England) Tuesday\, March 5 at 7:00 PM GMT\n
Pari s (France) Tuesday\, March 5 at 8:00 PM GMT+1\n
Tokyo (Japan) Wednesday\, March 6 at 4:00 AM GMT+9\n
Corresponding UTC (GM T) Tuesday\, March 5 at 7:00 PM UTC\n
\n\n### Logistics\n\nCha ir: Ada Rose Cannon\n\nScribe:\n\nIRC: [irc.w3.org](https://irc.w3.org/):6 667 #immersive-web [Instructions](https://github.com/immersive-web/adminis trivia/blob/main/IRC.md)\n\nCall Details can be found in the Immersive Web Event Calendars: [WG](https://www.w3.org/groups/wg/immersive-web/calendar /)/[CG](https://www.w3.org/groups/cg/immersive-web/calendar/)\n\nYou subsc ribe to these calendars with your calendar application of choice for more convenient access to the call details. See details at Export options secti on in [WG](https://www.w3.org/groups/wg/immersive-web/calendar/#export)/[C G](https://www.w3.org/groups/cg/immersive-web/calendar/#export).\n\nIf you are unable to login to view the call details please ask on the IRC before the call.\n\n### Help Wanted\n\nHere are some issues which are good issue s to get involved in\, if you have taken responsibility for one leave a co mment in the issue:\n\n- [webvr-polyfill-dpdb#34 Create a helper script/we b page for generating values for a new device](https://github.com/immersiv e-web/webvr-polyfill-dpdb/issues/34)\n- [webxr-input-profiles#69 Resizing the window changes the model viewer's aspect ratio](https://github.com/imm ersive-web/webxr-input-profiles/issues/69) [[Future]](https ://api.github.com/repos/immersive-web/webxr-input-profiles/milestones/4)\n - [webxr#953 Typescript definitions](https://github.com/immersive-web/webx r/issues/953) [[Pre-REC]](https://api.github.com/repos/imme rsive-web/webxr/milestones/16)\n- [webxr#1115 Explicitly spec when inline animation frame loops are suspended](https://github.com/immersive-web/webx r/issues/1115) [[Pre-REC]](https://api.github.com/repos/imm ersive-web/webxr/milestones/16)\n- [proposals#82 Some sort of local shared space](https://github.com/immersive-web/proposals/issues/82) STATUS:CANCELLED CREATED:20240327T002107Z LAST-MODIFIED:20240327T002108Z SEQUENCE:4 ORGANIZER;CN=W3C Calendar;PARTSTAT=ACCEPTED;ROLE=NON-PARTICIPANT:mailto:nor eply@w3.org ATTENDEE;CUTYPE=GROUP;ROLE=OPT-PARTICIPANT;RSVP=FALSE;CN=Immersive Web Work ing Group:mailto:public-immersive-web-wg@w3.org RECURRENCE-ID;TZID=America/Los_Angeles:20240402T120000 END:VEVENT END:VCALENDAR