From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <ffmpeg-devel-bounces@ffmpeg.org>
Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100])
	by master.gitmailbox.com (Postfix) with ESMTPS id 1C4484E6B0
	for <ffmpegdev@gitmailbox.com>; Thu, 13 Mar 2025 23:58:45 +0000 (UTC)
Received: from [127.0.1.1] (localhost [127.0.0.1])
	by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5F31368E2F1;
	Fri, 14 Mar 2025 01:58:41 +0200 (EET)
Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net
 [217.70.183.197])
 by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6E00D68C425
 for <ffmpeg-devel@ffmpeg.org>; Fri, 14 Mar 2025 01:58:34 +0200 (EET)
Received: by mail.gandi.net (Postfix) with ESMTPSA id 93C6E41CFB;
 Thu, 13 Mar 2025 23:58:33 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=niedermayer.cc;
 s=gm1; t=1741910313;
 h=from:from:reply-to:subject:subject:date:date:message-id:message-id:
 to:to:cc:mime-version:mime-version:content-type:content-type:
 in-reply-to:in-reply-to:references:references;
 bh=mB44pWITh46D9LfiSNS9OZZ/7uS+b8NAMupfXNP/SJc=;
 b=BbttxzpmpSMr2bpQgtQTlxqfWlx5HILphG62DHVSA7vmiWKvKr/Ms/hqhyOQ4cUDklxB98
 Cy/YAWAQfL5qdtptKer6hCE9hFR/kyPu6qZKd18ZcqsD7uZGOws0Xn7gwMI3Gd7Tw+N05z
 sV9zuaIjttYi/q8DNNQPaoxxH8d+G3Rc3UwJ3x0lUh2FBFlJb68fdqo6rdfb6nzD2jPPBp
 sltQC/3iRgQaLe30xrF3D7O5Ikt8oXO3zYg1WV/R5qJokTxjMhlAmMmSOPKrNuuO0fL4op
 tCzaD+Ug8IPF8ivCjUrpykNY933EFKOCe+XOXY3QoITANnuKUL1CqkxcqeHcEg==
Date: Fri, 14 Mar 2025 00:58:32 +0100
From: Michael Niedermayer <michael@niedermayer.cc>
To: ffmpeg-devel@ffmpeg.org, Niklas Haas <ffmpeg@haasn.xyz>
Message-ID: <20250313235832.GD4991@pb2>
References: <20241226193325.288834126EE@natalya.videolan.org>
 <20250126182659.GE2768425@pb2> <20250313235425.GC4991@pb2>
MIME-Version: 1.0
In-Reply-To: <20250313235425.GC4991@pb2>
X-GND-State: clean
X-GND-Score: 10
X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdduvdelfeefucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecufghrlhcuvffnffculddutddmnecujfgurhepfffhvffukfhfgggtuggjsehgtderredttddvnecuhfhrohhmpefoihgthhgrvghlucfpihgvuggvrhhmrgihvghruceomhhitghhrggvlhesnhhivgguvghrmhgrhigvrhdrtggtqeenucggtffrrghtthgvrhhnpeegvddujeffkeehffetgfdthfefudffheejheetgffghefflefgteffueehhfevheenucffohhmrghinhepvhhiuggvohhlrghnrdhorhhgnecukfhppeeguddrieeirdeijedruddufeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeeguddrieeirdeijedruddufedphhgvlhhopehlohgtrghlhhhoshhtpdhmrghilhhfrhhomhepmhhitghhrggvlhesnhhivgguvghrmhgrhigvrhdrtggtpdhnsggprhgtphhtthhopedvpdhrtghpthhtohepfhhfmhhpvghgqdguvghvvghlsehffhhmphgvghdrohhrghdprhgtphhtthhopehffhhmphgvgheshhgrrghsnhdrgiihii
X-GND-Sasl: michael@niedermayer.cc
Subject: Re: [FFmpeg-devel] [FFmpeg-cvslog] swscale: use 16-bit intermediate
 precision for RGB/XYZ conversion
X-BeenThere: ffmpeg-devel@ffmpeg.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: FFmpeg development discussions and patches <ffmpeg-devel.ffmpeg.org>
List-Unsubscribe: <https://ffmpeg.org/mailman/options/ffmpeg-devel>,
 <mailto:ffmpeg-devel-request@ffmpeg.org?subject=unsubscribe>
List-Archive: <https://ffmpeg.org/pipermail/ffmpeg-devel>
List-Post: <mailto:ffmpeg-devel@ffmpeg.org>
List-Help: <mailto:ffmpeg-devel-request@ffmpeg.org?subject=help>
List-Subscribe: <https://ffmpeg.org/mailman/listinfo/ffmpeg-devel>,
 <mailto:ffmpeg-devel-request@ffmpeg.org?subject=subscribe>
Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Content-Type: multipart/mixed; boundary="===============2777307502854412529=="
Errors-To: ffmpeg-devel-bounces@ffmpeg.org
Sender: "ffmpeg-devel" <ffmpeg-devel-bounces@ffmpeg.org>
Archived-At: <https://master.gitmailbox.com/ffmpegdev/20250313235832.GD4991@pb2/>
List-Archive: <https://master.gitmailbox.com/ffmpegdev/>
List-Post: <mailto:ffmpegdev@gitmailbox.com>


--===============2777307502854412529==
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature"; boundary="91hvyJtQxhE7ifRW"
Content-Disposition: inline


--91hvyJtQxhE7ifRW
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Fri, Mar 14, 2025 at 12:54:25AM +0100, Michael Niedermayer wrote:
> Hi
>=20
> On Sun, Jan 26, 2025 at 07:26:59PM +0100, Michael Niedermayer wrote:
> > On Thu, Dec 26, 2024 at 07:33:23PM +0000, Niklas Haas wrote:
> > > ffmpeg | branch: master | Niklas Haas <git@haasn.dev> | Mon Dec 16 14=
:49:39 2024 +0100| [af6d52eec66961f6a502b0f2f390c12226d087cd] | committer: =
Niklas Haas
> > >=20
> > > swscale: use 16-bit intermediate precision for RGB/XYZ conversion
> > >=20
> > > The current logic uses 12-bit linear light math, which is woefully in=
sufficient
> > > and leads to nasty postarization artifacts. This patch simply switche=
s the
> > > internal logic to 16-bit precision.
> > >=20
> > > This raises the memory requirement of these tables from 32 kB to 272 =
kB.
> > >=20
> > > All relevant FATE tests updated for improved accuracy.
> > >=20
> > > Fixes: #4829
> > > Signed-off-by: Niklas Haas <git@haasn.dev>
> > > Sponsored-by: Sovereign Tech Fund
> > >=20
> > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=3Dcommit;h=3Daf6d5=
2eec66961f6a502b0f2f390c12226d087cd
> > > ---
> >=20
> > this breaks on x86-32
>=20
> ping
>=20
> the fate tests for a major architecture are broken since this
> This impacts future bisections over that range for example

It also prevents others from easily seeing other failures as x86-32 is
already broken

thx

[...]

--=20
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Freedom in capitalist society always remains about the same as it was in
ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin

--91hvyJtQxhE7ifRW
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iF0EABEKAB0WIQSf8hKLFH72cwut8TNhHseHBAsPqwUCZ9NxKAAKCRBhHseHBAsP
q0UyAJ9iri+cJ1KZJsO4Q5MVppUSzesmUgCfUSkrChyH8bZUpJVAgRS+aJq0758=
=tKE8
-----END PGP SIGNATURE-----

--91hvyJtQxhE7ifRW--

--===============2777307502854412529==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".

--===============2777307502854412529==--