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From: "Michel Dänzer" <michel@daenzer.net>
To: "Cyr, Aric" <Aric.Cyr@amd.com>,
	"Koenig, Christian" <Christian.Koenig@amd.com>,
	"Wentland, Harry" <Harry.Wentland@amd.com>,
	Manasi Navare <manasi.d.navare@intel.com>
Cc: "Haehnle, Nicolai" <Nicolai.Haehnle@amd.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	amd-gfx mailing list <amd-gfx@lists.freedesktop.org>,
	"Deucher, Alexander" <Alexander.Deucher@amd.com>,
	"Koo, Anthony" <Anthony.Koo@amd.com>
Subject: Re: RFC for a render API to support adaptive sync and VRR
Date: Wed, 11 Apr 2018 17:45:41 +0200	[thread overview]
Message-ID: <01298e03-3c50-f4a2-591b-cf065cfb3231@daenzer.net> (raw)
In-Reply-To: <MWHPR12MB1837488A047C03E955282A4182BE0@MWHPR12MB1837.namprd12.prod.outlook.com>

On 2018-04-10 06:26 PM, Cyr, Aric wrote:> > My guess is they prefer to
“do nothing” and let driver/HW manage it,
> otherwise you exempt all existing games from supporting adaptive sync
> without a rewrite or update.
Nobody is saying adaptive sync should only work with explicit target
presentation times provided by the application. We're just arguing that
target presentation time as a mechanism is superior to target refresh
rate, both for video and game use cases. It also trivially allows
emulating "as early as possible" (target presentation time = 0) and
"fixed refresh rate" (target presentation time = start + i * target
frame duration) behaviour, even transparently for the application.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer
_______________________________________________
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dri-devel@lists.freedesktop.org
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  parent reply	other threads:[~2018-04-11 15:45 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-09 19:56 RFC for a render API to support adaptive sync and VRR Harry Wentland
     [not found] ` <c79421ce-9408-5cd6-5de3-0fa521146e4b-5C7GfCeVMHo@public.gmane.org>
2018-04-09 20:00   ` Harry Wentland
     [not found]     ` <435ebd04-0435-5a6a-9f1e-e4c4fc629aa9-5C7GfCeVMHo@public.gmane.org>
2018-04-09 21:45       ` Manasi Navare
     [not found]         ` <20180409214554.GB13967-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-04-10  6:45           ` Christian König
2018-04-10  7:37             ` Michel Dänzer
     [not found]               ` <b75e31f7-ce59-de97-5445-cb4c03ff7336-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-04-10 15:08                 ` Harry Wentland
     [not found]                   ` <ae9992e5-43ab-9636-13e1-8a5c692480b5-5C7GfCeVMHo@public.gmane.org>
2018-04-10 15:28                     ` Christian König
2018-04-10 15:35                     ` Cyr, Aric
2018-04-10 15:43                       ` Christian König
     [not found]                         ` <fc53ce53-f02c-891d-4aa5-e9a11cbe3007-5C7GfCeVMHo@public.gmane.org>
2018-04-10 16:26                           ` Cyr, Aric
     [not found]                             ` <MWHPR12MB1837488A047C03E955282A4182BE0-Gy0DoCVfaSXe1Hf+mWOIywdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-04-10 16:37                               ` Nicolai Hähnle
     [not found]                                 ` <54baa87e-33a9-bd69-a309-d61176eb4e8d-5C7GfCeVMHo@public.gmane.org>
2018-04-10 17:52                                   ` Harry Wentland
     [not found]                             ` <063d6dff-2b97-ef01-12bb-8a24125a58ec@daenzer.net>
2018-04-10 17:13                               ` Cyr, Aric
     [not found]                                 ` <65006f34-39b9-5aca-e0c0-77a591b69c3a@daenzer.net>
     [not found]                                   ` <65006f34-39b9-5aca-e0c0-77a591b69c3a-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-04-10 17:25                                     ` Cyr, Aric
     [not found]                                       ` <f85e3590-b283-843b-12d0-5f6f0c4c0952@amd.com>
2018-04-10 21:45                                         ` Cyr, Aric
2018-04-11  6:57                                           ` Nicolai Hähnle
     [not found]                                             ` <72c1d357-db72-b181-9421-04f99b3bbf2f-5C7GfCeVMHo@public.gmane.org>
2018-04-11  9:50                                               ` Michel Dänzer
     [not found]                                                 ` <2005817c-09c0-aebe-bb96-9e22d6f16df5-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-04-11 23:30                                                   ` Cyr, Aric
     [not found]                                                     ` <MWHPR12MB1837F8120B126FA3A4CE899982BD0-Gy0DoCVfaSXe1Hf+mWOIywdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-04-12  8:48                                                       ` Michel Dänzer
2018-04-12 11:39                                                     ` Nicolai Hähnle
     [not found]                                                       ` <a5b5c31f-e7c5-8ae0-1239-06bfa86b939b-5C7GfCeVMHo@public.gmane.org>
2018-04-12 14:57                                                         ` Michel Dänzer
2018-04-12 17:39                                                         ` Harry Wentland
2018-04-11 10:28                                       ` Michel Dänzer
2018-04-11 15:45                             ` Michel Dänzer [this message]
     [not found]                       ` <MWHPR12MB1837C57016A470A5199E855282BE0-Gy0DoCVfaSXe1Hf+mWOIywdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-04-10 17:13                         ` Michel Dänzer
2018-04-12 21:38                 ` Stéphane Marchesin
2018-04-13 19:24                   ` Harry Wentland
2018-04-18  3:58                 ` Keith Packard
2018-04-18  7:39                   ` Daniel Vetter
2018-04-20 20:32                     ` Manasi Navare
     [not found]                       ` <20180420203240.GA9472-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-04-21 10:30                         ` Daniel Stone
2018-04-23 14:40                         ` Harry Wentland
2018-04-23 21:19                           ` Manasi Navare
     [not found]                             ` <20180423211944.GC9472-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-04-24 12:09                               ` Daniel Vetter
2018-04-24 14:20                                 ` Cyr, Aric
     [not found]                                 ` <20180424120946.GW31310-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2018-04-24 14:28                                   ` Harry Wentland
     [not found]                                     ` <b9c33eeb-1db8-f782-cfbe-411d94fecb67-5C7GfCeVMHo@public.gmane.org>
2018-04-24 21:57                                       ` Daniel Vetter
     [not found]                                         ` <CAKMK7uHzLRUwZSFbMb4qDzXBODVSQVTTw6BxgmvJdES4gJmBDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-08-17 10:20                                           ` Ernst Sjöstrand
2018-04-10 15:03           ` Harry Wentland
2018-04-10 21:36             ` Manasi Navare
2018-04-10 22:00               ` Cyr, Aric
2018-04-13 16:04       ` Daniel Vetter
     [not found]         ` <20180413160453.GC31310-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2018-04-13 19:20           ` Harry Wentland

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