BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.5.8//EN CALSCALE:GREGORIAN LAST-MODIFIED:20240820T020131Z 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:20240820T020131Z SUMMARY:Immersive Web Working Group Calls DTSTART;TZID=America/Los_Angeles:20240820T120000 DTEND;TZID=America/Los_Angeles:20240820T130000 DESCRIPTION:https://www.w3.org/events/meetings/efecb307-2559-4f8f-b0ac-a06a 099027f2/20240820T120000/\n\nNo topics so canceled.\n\nAgenda: https://git hub.com/immersive-web/administrivia/blob/main/meetings/2024/2024-03-05-Imm ersive_Web_Working_Group_Teleconference-agenda.md\n\nAgenda\n\n### Call Ag enda\n\nThis agenda can be viewed and updated on [Github](https://github.c om/immersive-web/administrivia/blob/main/meetings/wg/2024-03-05-Immersive_ Web_Working_Group_Teleconference-agenda.md).\n\nIf you would like to add a n item to the agenda or volunteer to scribe please open a pull request aga inst 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/immersive-web/webxr-hand-input/pull/123 #issuecomment-1936728918)\n> FYI\n\n* [administrivia#205 Tag F2F issues](h ttps://github.com/immersive-web/administrivia/issues/205) - Yonet\n> Pleas e tag the issues you would 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 ou tputs sRGB encoded?](https://github.com/immersive-web/webxr/issues/988) [r equested by cabanier](https://github.com/immersive-web/webxr/issues/988#is suecomment-1933017426)\n> > > The browser creates linear output values. Th e compositor is supposed to treat it like sRGB and not do any conversion.\ n>> \n>> That sounds wrong\, and I don't know if it's just a terminology m ismatch.\n>\n>That may be "wrong" but that is how browsers work.\n>\n>> I think we're in agreement that the web app writes its output into the opaqu e framebuffer using sRGB encoding\, same as if it was targeting a 2D displ ay. The browser needs to send this data to the system compositor\, and bas ically 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 creates linear output values"\, do you mean it produces numbers that the compositor can use as-is? That's correct assuming that th e compositor is expecting sRGB.\n>\n>No\, the browser creates linear value s. Technically this is *wrong* but that is how they're exposed to the page .\n>Browsers are not alone in making this error\; there were enough games that made the same assumption that Oculus' [old API](https://github.com/Mo rtimerGoro/ovr-mobile-sys/blob/master/VrApi/Include/VrApi_Types.h#L543) ha d a flag to work around this.\n>\n>> > No\, that would be incorrect. The d efault of the layers API should match the default WebGL canvas behavior wh ich is rgb\; regular WebXR has the same default.\n>> \n>> I don't get this part. Regular WebGL canvas is interpreted as sRGB\, that's why for exampl e the recommended Three.JS rendering setup puts a `gl_FragColor = linearTo SRGB(gl_FragColor)` equivalent at the end of shaders. \n>\n>It only does t hat conditionally and looking at the code\, only for sRGB render targets.\ n>\n>> I think it would be wrong if a Layers extension XRProjectionLayer w ith colorFormat=RGBA would treat the data as sRGB and for example pass it on to the compositor without conversion to a GL_SRGB8_ALPHA8 OpenXR swapch ain buffer. While that would match the default WebXR rendering\, I think i t doesn't make sense - what would colorFormat=SRGB8 do differently then? T o the best of my knowledge\, the default WebXR (and 2D canvas) rendering i s equivalent to SRGB8 and would match being used with an OpenXR SRGB8 swap chain.\n>\n>No\, changing the default to sRGB would break each WebXR exper ience 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 sRG B\n\n* [webxr#1358 Detecting if an `XRInputSource` is an auxiliary or a pr imary input source](https://github.com/immersive-web/webxr/issues/1358) [r equested by cabanier](https://github.com/immersive-web/webxr/issues/1358#i ssuecomment-1938928307)\n> I worry that adding inputsources is confusing f or authors and might break certain experiences.\n>\n>Since every site need s to be updated anyway\, maybe we can introduce a new attribute (`secondar yInputSources`?) that contains all the input sources that don't generate i nput events.\n>\n> should we move secondary input sources to their own att ribute?\n\n* [webxr#1360 Indicate "preferred" immersive mode](https://gith ub.com/immersive-web/webxr/issues/1360) - cabanier\n> On most HMDs\, the u ser can choose either a VR environment or passthrough.\n >OpenXR offers an API to convey a preferred immersive mode\; basically it returns if the us er 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 Francisco (U.S.A. - California) Tuesday\, March 5 at 1 1:00 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
Corresponding UTC (GMT) Tuesday\, March 5 at 7:00 PM UTC\n
\n\n### Logistics\n\nChair: Ada Rose Cannon\n\nScribe:\n\n IRC: [irc.w3.org](https://irc.w3.org/):6667 #immersive-web [Instructions]( https://github.com/immersive-web/administrivia/blob/main/IRC.md)\n\nCall D etails 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 subscribe to these calendars with your calendar application of choice for more convenient access to the call deta ils. See details at Export options section in [WG](https://www.w3.org/grou ps/wg/immersive-web/calendar/#export)/[CG](https://www.w3.org/groups/cg/im mersive-web/calendar/#export).\n\nIf you are unable to login to view the c all details please ask on the IRC before the call.\n\n### Help Wanted\n\nH ere are some issues which are good issues to get involved in\, if you have taken responsibility for one leave a comment in the issue:\n\n- [webvr-po lyfill-dpdb#34 Create a helper script/web page for generating values for a new device](https://github.com/immersive-web/webvr-polyfill-dpdb/issues/3 4)\n- [webxr-input-profiles#69 Resizing the window changes the model viewe r's aspect ratio](https://github.com/immersive-web/webxr-input-profiles/is sues/69) [[Future]](https://api.github.com/repos/immersive- web/webxr-input-profiles/milestones/4)\n- [webxr#953 Typescript definition s](https://github.com/immersive-web/webxr/issues/953) [[Pre-REC]](https://api.github.com/repos/immersive-web/webxr/milestones/16)\n- [webxr#1115 Explicitly spec when inline animation frame loops are suspende d](https://github.com/immersive-web/webxr/issues/1115) [[Pre-REC]](https://api.github.com/repos/immersive-web/webxr/milestones/16)\n- [proposals#82 Some sort of local shared space](https://github.com/immersi ve-web/proposals/issues/82) STATUS:CANCELLED CREATED:20240820T020129Z LAST-MODIFIED:20240820T020131Z 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:20240820T120000 END:VEVENT END:VCALENDAR