From: "Michel Dänzer" <michel@daenzer.net>
To: Daniel Vetter <daniel@ffwll.ch>,
harry.wentland@amd.com, daniel@fooishbar.org, maraeo@gmail.com
Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH 6/8] drm/amd/display: Set DC options from modifiers.
Date: Mon, 10 Aug 2020 14:49:00 +0200 [thread overview]
Message-ID: <49e200cd-3df6-8a11-34f4-d1342a79f75e@daenzer.net> (raw)
In-Reply-To: <20200810122820.GJ2352366@phenom.ffwll.local>
On 2020-08-10 2:28 p.m., Daniel Vetter wrote:
>
> Ok just learned that amdgpu hat set/get_tiling, so I'm upgrading my idea
> here to a very strong recommendation, i.e. please do this except if
> there's and amd ddx which somehow wants to change tiling mode while a fb
> exists, and expects this to propagate.
>
> In i915 we even disallow the set_tiling ioctl with an error if an fb
> exists, just to make sure userspace behaves. Even if userspace uses
> set_tiling, this way we can at least enforce the same semantics of "client
> can't pull compositor over the table with a set_tiling at the wrong time"
> of modifiers.
FWIW, xf86-video-amdgpu doesn't have any code to set the tiling
metadata, only Mesa and presumably AMD's Vulkan/OpenGL UMDs do.
--
Earthling Michel Dänzer | https://redhat.com
Libre software enthusiast | Mesa and X developer
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next prev parent reply other threads:[~2020-08-10 12:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-04 21:31 [PATCH 0/8] amd/display: Add GFX9+ modifier support Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 1/8] drm/amd/display: Do not silently accept DCC for multiplane formats Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 2/8] drm/amd: Init modifier field of helper fb Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 3/8] drm/amd/display: Honor the offset for plane 0 Bas Nieuwenhuizen
2020-08-05 7:21 ` daniel
2020-08-04 21:31 ` [PATCH 4/8] drm/fourcc: Add AMD DRM modifiers Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 5/8] drm/amd/display: Refactor surface tiling setup Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 6/8] drm/amd/display: Set DC options from modifiers Bas Nieuwenhuizen
2020-08-05 7:32 ` daniel
2020-08-10 12:28 ` Daniel Vetter
2020-08-10 12:49 ` Michel Dänzer [this message]
2020-08-10 13:09 ` Daniel Vetter
2020-08-10 14:13 ` Bas Nieuwenhuizen
2020-08-10 14:20 ` Daniel Vetter
2020-08-04 21:31 ` [PATCH 7/8] drm/amd/display: Add formats for DCC with 2/3 planes Bas Nieuwenhuizen
2020-08-04 21:31 ` [PATCH 8/8] drm/amd/display: Expose modifiers Bas Nieuwenhuizen
2020-08-07 19:42 ` Marek Olšák
2020-09-02 10:31 ` Bas Nieuwenhuizen
2020-09-03 2:42 ` Marek Olšák
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