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From: "Koenig, Christian" <Christian.Koenig-5C7GfCeVMHo@public.gmane.org>
To: "Michel Dänzer" <michel-otUistvHUpPR7s880joybQ@public.gmane.org>,
	"Wentland, Harry" <Harry.Wentland-5C7GfCeVMHo@public.gmane.org>,
	"Mike Lothian" <mike-4+n8WJKc9ve9FHfhHBbuYA@public.gmane.org>,
	"Daniel Vetter" <daniel-/w4YWyX8dFk@public.gmane.org>
Cc: "Haehnle, Nicolai" <Nicolai.Haehnle-5C7GfCeVMHo@public.gmane.org>,
	"Olsak, Marek" <Marek.Olsak-5C7GfCeVMHo@public.gmane.org>,
	"dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
	"manasi.d.navare-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org"
	<manasi.d.navare-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
	"Deucher,
	Alexander" <Alexander.Deucher-5C7GfCeVMHo@public.gmane.org>,
	"Kazlauskas,
	Nicholas" <Nicholas.Kazlauskas-5C7GfCeVMHo@public.gmane.org>
Subject: Re: [PATCH v2 0/3] A DRM API for adaptive sync and variable refresh rate support
Date: Fri, 12 Oct 2018 08:31:05 +0000	[thread overview]
Message-ID: <84c4a243-ca2c-49a7-9e2c-22666292aea9@amd.com> (raw)
In-Reply-To: <ac5b5865-6bb0-08e8-d83c-26893e75b11e-otUistvHUpPR7s880joybQ@public.gmane.org>

Am 12.10.2018 um 10:26 schrieb Michel Dänzer:
> On 2018-10-11 9:44 p.m., Harry Wentland wrote:
>> On 2018-10-03 04:25 AM, Mike Lothian wrote:
>>> I'm curious to know whether this will/could work over PRIME
>> I don't see why this shouldn't work over PRIME as long as the
>> presenting GPU supports the new variable refresh rate API, but I know
>> very little about prime, so maybe someone else can chime in and give
>> a better opinion.
> It won't work for displays connected to a secondary GPU, because those
> aren't hooked up to the Present extension directly.
>
> It can theoretically work with render offloading, if the primary GPU can
> scan out directly from the shared pixmap. This is only possible with
> current AMD APUs which support scatter/gather scanout (Carrizo and
> newer?).

Actually only Carizzo and Stoney at the moment because this is buggy on 
Raven. Not sure if that is a pure software or a hardware problem.

Christian.

> One gotcha is that xf86-video-amdgpu currently doesn't allow
> flipping between buffers with different tiling parameters (BTW Harry,
> does that work with DC?), but that should be easy to fix.


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  parent reply	other threads:[~2018-10-12  8:31 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-24 18:15 [PATCH v2 0/3] A DRM API for adaptive sync and variable refresh rate support Nicholas Kazlauskas
2018-09-24 18:15 ` [PATCH v2 2/3] drm: Add variable refresh property to DRM CRTC Nicholas Kazlauskas
2018-09-24 18:38   ` Ville Syrjälä
2018-09-24 19:06     ` Kazlauskas, Nicholas
     [not found]       ` <4aa1583c-2be0-8cec-2857-6c3e489965b4-5C7GfCeVMHo@public.gmane.org>
2018-09-24 20:26         ` Ville Syrjälä
     [not found]           ` <20180924202655.GA9144-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-09-25 13:28             ` Michel Dänzer
     [not found]               ` <2158aa72-9156-5592-822a-c815f373fd53-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-09-25 14:04                 ` Ville Syrjälä
     [not found]                   ` <20180925140433.GH9144-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-09-25 14:35                     ` Michel Dänzer
2018-09-25 15:28                       ` Ville Syrjälä
     [not found]                         ` <20180925152817.GK9144-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-10-01  7:10                           ` Daniel Vetter
2018-09-25 13:51             ` Kazlauskas, Nicholas
2018-10-05  8:10               ` Pekka Paalanen
2018-10-05 16:21                 ` Kazlauskas, Nicholas
     [not found]                   ` <fdc195dd-9650-8194-3a16-393f61bb2eee-5C7GfCeVMHo@public.gmane.org>
2018-10-05 16:56                     ` Michel Dänzer
2018-10-05 17:48                       ` Kazlauskas, Nicholas
2018-10-08 10:57                         ` Michel Dänzer
2018-10-10  7:14                     ` Pekka Paalanen
2018-10-10 13:35                       ` Kazlauskas, Nicholas
     [not found]                         ` <3bb5e05d-f7e6-8e44-cfae-202191d64245-5C7GfCeVMHo@public.gmane.org>
2018-10-12  7:23                           ` Pekka Paalanen
2018-10-12  7:35                             ` Koenig, Christian
     [not found]                               ` <894d12d3-aa0b-c0f6-6347-7d13e58e651a-5C7GfCeVMHo@public.gmane.org>
2018-10-12  9:21                                 ` Pekka Paalanen
2018-10-12 11:20                                   ` Koenig, Christian
2018-10-12 12:58                                     ` Kazlauskas, Nicholas
2018-10-15 13:57                                       ` Pekka Paalanen
2018-10-15 16:02                                         ` Kazlauskas, Nicholas
     [not found]                                           ` <52103366-510d-15a6-61d2-26196a4f0e57-5C7GfCeVMHo@public.gmane.org>
2018-10-16  7:36                                             ` Pekka Paalanen
     [not found] ` <20180924181537.12092-1-nicholas.kazlauskas-5C7GfCeVMHo@public.gmane.org>
2018-09-24 18:15   ` [PATCH v2 1/3] drm: Add variable refresh rate properties to connector Nicholas Kazlauskas
2018-09-24 18:32     ` Ville Syrjälä
2018-10-01  7:05       ` Daniel Vetter
2018-09-24 18:15   ` [PATCH v2 3/3] drm/amd/display: Set FreeSync state using DRM VRR properties Nicholas Kazlauskas
2018-10-01  7:15 ` [PATCH v2 0/3] A DRM API for adaptive sync and variable refresh rate support Daniel Vetter
2018-10-02 14:49   ` Harry Wentland
2018-10-03  8:41     ` Daniel Vetter
     [not found]       ` <20181003084120.GP11082-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2018-10-03 18:35         ` Manasi Navare
2018-10-11 19:37           ` Harry Wentland
2018-10-11 19:41         ` Harry Wentland
2018-10-03  8:25   ` Mike Lothian
     [not found]     ` <CAHbf0-HhjG2xc1sAjHBR=Ep11LzumO6tdyzBcKSZ8h82H28Zbg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-10-11 19:44       ` Harry Wentland
2018-10-12  8:26         ` Michel Dänzer
     [not found]           ` <ac5b5865-6bb0-08e8-d83c-26893e75b11e-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-10-12  8:31             ` Koenig, Christian [this message]
     [not found]               ` <84c4a243-ca2c-49a7-9e2c-22666292aea9-5C7GfCeVMHo@public.gmane.org>
2018-10-25 17:57                 ` Wentland, Harry
     [not found]                   ` <1c3d19a7-3afa-6de5-59e0-37a19d73848b-5C7GfCeVMHo@public.gmane.org>
2018-10-26  9:33                     ` Michel Dänzer

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