From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: Proposal for RandR version 1.6, Leases and EDID-based output grabs Date: Tue, 02 May 2017 07:45:25 -0700 Message-ID: <868tmfl3lm.fsf@hiro.keithp.com> References: <86fuhrka4t.fsf@hiro.keithp.com> <4caa78af-7dc8-fbcf-d2ca-285d4554f5c9@daenzer.net> <86zifsyl6o.fsf@hiro.keithp.com> <20170407105618.200ad289@eldfell> <86lgr9xzi4.fsf@hiro.keithp.com> <20170410143531.09b84bd7@eldfell> <86lgqkw5p6.fsf@hiro.keithp.com> <20170502103945.4b52445e@eldfell> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0560455693==" Return-path: In-Reply-To: <20170502103945.4b52445e@eldfell> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: xorg-devel-bounces-go0+a7rfsptAfugRpC6u6w@public.gmane.org Sender: "xorg-devel" To: Pekka Paalanen Cc: xorg-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Michel =?utf-8?Q?D=C3=A4nzer?= , dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: dri-devel@lists.freedesktop.org --===============0560455693== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Pekka Paalanen writes: > I was under the impression that if you have a VR application running on > the HMD, it necessarily also implies that you have a VR compositor > running, which means that there is always some process providing a valid > image to the HMD. (At least in end-user setups.) Yes, I think the point I was trying to make was that X should never attempt to talk to the HMD and provide an image. > I assumed that means there are no VR apps nor a VR compositor that > could handle the HMD. In that case I think the HMD should be always > off. Agreed. > I presume that if "desktop" is set to "true", it implies that the HMD > is capable of showing a simple 2D canvas in stereo without any special > rendering and with the default video mode. That is, creating a sort of > a virtual 2D monitor. That would be nice. I was thinking that 'desktop' would be true for non-HMD displays that didn't need the VR compositor. If you've got a VR compositor and want to paint the desktop inside the VR environment, then I think you'd want to create a synthetic monitor and hand images from that to the VR compositor each frame. > FWIW, it all sounds good to me! > > I don't really have an opinion on XML vs. JSON, I'm just happy it's not > another ad hoc format. Yeah, I think we're done with ad-hoc formats. I've done both XML and JSON, and JSON is way easier to hand write, but we already use XML in a bunch of places, so the necessary libaries are already linked into the server... =2D-=20 =2Dkeith --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEw4O3eCVWE9/bQJ2R2yIaaQAAABEFAlkIm4YACgkQ2yIaaQAA ABE0nw/+JTJF01IjZdPoeFOH3Q9y3/BVwA87A9uWYaubzhwTjEIUVaG35aEZy8VN Su45iNY23njC/a7ib/JXjDZ4uXMxm7mzGnw3nEGmdkeoxPOBxXalXzr+LzQIJ98C BXUBxRo9uGA0ySPRASG+WdJoXFHWwRbHUapJvjdaMFIH2jMNU7GpGduP4SPdishb nMiW+KIcs5r0pzR70rh/L9kBbxKwYqfW2VFMI8ST3qyWSDheq4mGygFyqRCYUR7j h0q42BPV/Ss00XU46tQDc6YaJVauio5mKcBLLtJe2e8fh59Dsve1CCjJSUy3g5QK AQUzNiDcExz6XCkZF+WpONIZlPjHgoUB78ZGyPk0Nw41ncMbdTSIkTSV6LxgYouw U5hGUVMexgswWYlQJaK/J6+jqB/ZQrmAhvFkosshPGIJJHyhgwMq3yS1RQlksf0s icGSdeiECgpUZBewZnKm2D1cOUf4piYuc3j39tpD50EhF5fIqZ93bCwPYdnv2LeE OPWd0QhelPCFz0YKN17+Bzq477QdjRYgc3LULBbMSP9X1a1n5eJeIs3TKNSPWELM hDpTZ9kBaLEuAnYV4FZAykvKuBFICQRPztYAlVKC49FsIGjhufaZLRG30g5Qgtpz MMHF8UqWeQN1fPGFO8xIEErszQXbmzH/h3cFr4FVtU9LotpsAqc= =YYV0 -----END PGP SIGNATURE----- --=-=-=-- --===============0560455693== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KeG9yZy1kZXZl bEBsaXN0cy54Lm9yZzogWC5PcmcgZGV2ZWxvcG1lbnQKQXJjaGl2ZXM6IGh0dHA6Ly9saXN0cy54 Lm9yZy9hcmNoaXZlcy94b3JnLWRldmVsCkluZm86IGh0dHBzOi8vbGlzdHMueC5vcmcvbWFpbG1h bi9saXN0aW5mby94b3JnLWRldmVs --===============0560455693==--