From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Cyr, Aric" <Aric.Cyr-5C7GfCeVMHo@public.gmane.org>
Subject: RE: RFC for a render API to support adaptive sync and VRR
Date: Wed, 11 Apr 2018 23:30:30 +0000
Message-ID: <MWHPR12MB1837F8120B126FA3A4CE899982BD0@MWHPR12MB1837.namprd12.prod.outlook.com>
References: <c79421ce-9408-5cd6-5de3-0fa521146e4b@amd.com>
 <435ebd04-0435-5a6a-9f1e-e4c4fc629aa9@amd.com>
 <20180409214554.GB13967@intel.com>
 <1e8d1857-faba-85da-0136-ea7c29ec1b84@amd.com>
 <b75e31f7-ce59-de97-5445-cb4c03ff7336@daenzer.net>
 <ae9992e5-43ab-9636-13e1-8a5c692480b5@amd.com>
 <MWHPR12MB1837C57016A470A5199E855282BE0@MWHPR12MB1837.namprd12.prod.outlook.com>
 <fc53ce53-f02c-891d-4aa5-e9a11cbe3007@amd.com>
 <MWHPR12MB1837488A047C03E955282A4182BE0@MWHPR12MB1837.namprd12.prod.outlook.com>
 <063d6dff-2b97-ef01-12bb-8a24125a58ec@daenzer.net>
 <MWHPR12MB1837201365AE76E07CD906D482BE0@MWHPR12MB1837.namprd12.prod.outlook.com>
 <65006f34-39b9-5aca-e0c0-77a591b69c3a@daenzer.net>
 <MWHPR12MB1837A7FD90202CA5EDF7B34582BE0@MWHPR12MB1837.namprd12.prod.outlook.com>
 <f85e3590-b283-843b-12d0-5f6f0c4c0952@amd.com>
 <MWHPR12MB18374597F3FC9BFEB6763ED082BE0@MWHPR12MB1837.namprd12.prod.outlook.com>
 <72c1d357-db72-b181-9421-04f99b3bbf2f@amd.com>
 <2005817c-09c0-aebe-bb96-9e22d6f16df5@daenzer.net>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
In-Reply-To: <2005817c-09c0-aebe-bb96-9e22d6f16df5-otUistvHUpPR7s880joybQ@public.gmane.org>
Content-Language: en-US
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/amd-gfx>
List-Post: <mailto:amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "amd-gfx" <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: =?utf-8?B?TWljaGVsIETDpG56ZXI=?= <michel-otUistvHUpPR7s880joybQ@public.gmane.org>, "Haehnle, Nicolai" <Nicolai.Haehnle-5C7GfCeVMHo@public.gmane.org>, "Koenig, Christian" <Christian.Koenig-5C7GfCeVMHo@public.gmane.org>, "Wentland, Harry" <Harry.Wentland-5C7GfCeVMHo@public.gmane.org>, Manasi Navare <manasi.d.navare-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "Deucher, Alexander" <Alexander.Deucher-5C7GfCeVMHo@public.gmane.org>, Daniel Vetter <daniel.vetter-/w4YWyX8dFk@public.gmane.org>, "Koo, Anthony" <Anthony.Koo-5C7GfCeVMHo@public.gmane.org>, dri-devel <dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>, amd-gfx mailing list <amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Id: dri-devel@lists.freedesktop.org
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