BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.5.8//EN CALSCALE:GREGORIAN LAST-MODIFIED:20241015T194232Z 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:efecb307-2559-4f8f-b0ac-a06a099027f2 DTSTAMP:20241015T194232Z SUMMARY:Immersive Web Working Group Calls DTSTART;TZID=America/Los_Angeles:20241015T120000 DTEND;TZID=America/Los_Angeles:20241015T130000 DESCRIPTION:https://www.w3.org/events/meetings/efecb307-2559-4f8f-b0ac-a06a 099027f2/20241015T120000/\n\n\n\nAgenda: https://github.com/immersive-web/ administrivia/blob/main/meetings/2024/2024-10-15-Immersive_Web_Working_Gro up_Teleconference-agenda.md\n\nAgenda\n\n### Call Agenda\n\nThis agenda ca n be viewed and updated on [Github](https://github.com/immersive-web/admin istrivia/blob/main/meetings/wg/2024-03-05-Immersive_Web_Working_Group_Tele conference-agenda.md).\n\nIf you would like to add an item to the agenda o r volunteer to scribe please open a pull request against this agenda.\n\n* [webxr-hand-input#123 Reapply "Allow generic-hand"](https://github.com/im mersive-web/webxr-hand-input/pull/123) [requested by AdaRoseCannon](https: //github.com/immersive-web/webxr-hand-input/pull/123#issuecomment-19367289 18)\n> FYI\n\n* [administrivia#205 Tag F2F issues](https://github.com/imme rsive-web/administrivia/issues/205) - Yonet\n> Please tag the issues you w ould like to discuss on F2F meeting.\n >Feel free to create new issues and don't forget to rsvp. \n\n* [webxr#988 Are 8-bit outputs sRGB encoded?](h ttps://github.com/immersive-web/webxr/issues/988) [requested by cabanier]( https://github.com/immersive-web/webxr/issues/988#issuecomment-1933017426) \n> > > The browser creates linear output values. The compositor is suppos ed to treat it like sRGB and not do any conversion.\n>> \n>> That sounds w rong\, and I don't know if it's just a terminology mismatch.\n>\n>That may be "wrong" but that is how browsers work.\n>\n>> I think we're in agreeme nt that the web app writes its output into the opaque framebuffer using sR GB 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 swapchain is in sRGB.\n>\n>> When you say "the browser crea tes linear output values"\, do you mean it produces numbers that the compo sitor can use as-is? That's correct assuming that the compositor is expect ing 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 a lone in making this error\; there were enough games that made the same ass umption that Oculus' [old API](https://github.com/MortimerGoro/ovr-mobile- sys/blob/master/VrApi/Include/VrApi_Types.h#L543) had a flag to work aroun d this.\n>\n>> > No\, that would be incorrect. The default of the layers A PI should match the default WebGL canvas behavior which is rgb\; regular W ebXR has the same default.\n>> \n>> I don't get this part. Regular WebGL c anvas is interpreted as sRGB\, that's why for example the recommended Thre e.JS rendering setup puts a `gl_FragColor = linearToSRGB(gl_FragColor)` eq uivalent at the end of shaders. \n>\n>It only does that conditionally and looking at the code\, only for sRGB render targets.\n>\n>> I think it woul d be wrong if a Layers extension XRProjectionLayer with colorFormat=RGBA w ould treat the data as sRGB and for example pass it on to the compositor w ithout conversion to a GL_SRGB8_ALPHA8 OpenXR swapchain buffer. While that would match the default WebXR rendering\, I think it doesn't make sense - what would colorFormat=SRGB8 do differently then? To the best of my knowl edge\, the default WebXR (and 2D canvas) rendering is equivalent to SRGB8 and would match being used with an OpenXR SRGB8 swapchain.\n>\n>No\, chang ing the default to sRGB would break each WebXR experience because now draw ing with RGB will get gamma correction applied.\n>I'm happy to discuss thi s further during a call.\n>\n> discuss linear vs sRGB\n\n* [webxr#1358 Det ecting if an `XRInputSource` is an auxiliary or a primary input source](ht tps://github.com/immersive-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 b reak certain experiences.\n>\n>Since every site needs to be updated anyway \, maybe we can introduce a new attribute (`secondaryInputSources`?) that contains all the input sources that don't generate input events.\n>\n> sho uld we move secondary input sources to their own attribute?\n\n* [webxr#13 60 Indicate "preferred" immersive mode](https://github.com/immersive-web/w ebxr/issues/1360) - cabanier\n> On most HMDs\, the user can choose either a VR environment or passthrough.\n >OpenXR offers an API to convey a prefe rred immersive mode\; 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 Teleconference - 2024-03-05\n\n\n
San Francis co (U.S.A. - California) Tuesday\, March 5 at 11:00 AM PST\n
Boston (U.S.A. - Massachusetts) Tuesday\, March 5 at 2:00 PM EST\n
London (United Kingdom - England) Tuesday\, March 5 at 7:00 PM GMT\n
Paris (France) Tuesday\, March 5 at 8:00 PM GMT+1\n
Tokyo (Japan) Wednesday\, March 6 at 4:00 AM GMT+9\n
Cor responding UTC (GMT) Tuesday\, March 5 at 7:00 PM UTC\n
\n\n## # Logistics\n\nChair: Ada Rose Cannon\n\nScribe:\n\nIRC: [irc.w3.org](http s://irc.w3.org/):6667 #immersive-web [Instructions](https://github.com/imm ersive-web/administrivia/blob/main/IRC.md)\n\nCall Details can be found in the Immersive Web Event Calendars: [WG](https://www.w3.org/groups/wg/imme rsive-web/calendar/)/[CG](https://www.w3.org/groups/cg/immersive-web/calen dar/)\n\nYou subscribe to these calendars with your calendar application o f choice for more convenient access to the call details. See details at Ex port options section in [WG](https://www.w3.org/groups/wg/immersive-web/ca lendar/#export)/[CG](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 wh ich are good issues to get involved in\, if you have taken responsibility for one leave a comment in the issue:\n\n- [webvr-polyfill-dpdb#34 Create a helper script/web page for generating values for a new device](https://g ithub.com/immersive-web/webvr-polyfill-dpdb/issues/34)\n- [webxr-input-pro files#69 Resizing the window changes the model viewer's aspect ratio](http s://github.com/immersive-web/webxr-input-profiles/issues/69) [[Futu re]](https://api.github.com/repos/immersive-web/webxr-input-profil es/milestones/4)\n- [webxr#953 Typescript definitions](https://github.com/ immersive-web/webxr/issues/953) [[Pre-REC]](https://api.git hub.com/repos/immersive-web/webxr/milestones/16)\n- [webxr#1115 Explicitly spec when inline animation frame loops are suspended](https://github.com/ immersive-web/webxr/issues/1115) [[Pre-REC]](https://api.gi thub.com/repos/immersive-web/webxr/milestones/16)\n- [proposals#82 Some so rt of local shared space](https://github.com/immersive-web/proposals/issue s/82) STATUS:CONFIRMED CREATED:20241015T152547Z LAST-MODIFIED:20241015T194232Z 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:20241015T120000 END:VEVENT END:VCALENDAR