From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from anholt.net (anholt.net [50.246.234.109]) by gabe.freedesktop.org (Postfix) with ESMTP id DF7CE6E4AA for ; Thu, 9 Aug 2018 21:31:52 +0000 (UTC) From: Eric Anholt In-Reply-To: <2758e622f4a05d69f984bb3439af49823f43d4fc.1532596850.git-series.maxime.ripard@bootlin.com> References: <2758e622f4a05d69f984bb3439af49823f43d4fc.1532596850.git-series.maxime.ripard@bootlin.com> Date: Thu, 09 Aug 2018 14:31:50 -0700 Message-ID: <87r2j7rzuh.fsf@anholt.net> MIME-Version: 1.0 Subject: Re: [igt-dev] [PATCH v4 10/13] chamelium: Change our pattern for a custom one List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1487139413==" Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: Maxime Ripard , igt-dev@lists.freedesktop.org Cc: eben@raspberrypi.org, Maxime Ripard , Paul Kocialkowski , Thomas Petazzoni List-ID: --===============1487139413== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain Maxime Ripard writes: > The current pattern being used is the one generated through the > igt_create_color_pattern_fb. > > However, in order to deal with multiple formats and the upsampling / > downsampling issues that might arise from converting back and forth between > formats, we will need to have a pattern with quite precise color values, > and without any shades or gradient of colors. 64x64 blocks of color seem pretty limited, and might miss tiling issues for people -- would the previous pattern be worth using for 1:1, possibly non-format-converted cases? > The easiest way to do that will be to only use values that would have the > same part on the common most significant bits (5, to deal with the most > formats) and have the same bit repeated on the least significant bits that > are going to be dropped and / or padded when converting between formats. > > Pixman will fill the lowest bits with 1, and our hardware is able to Let's specify which hardware here :) --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE/JuuFDWp9/ZkuCBXtdYpNtH8nugFAltsssYACgkQtdYpNtH8 nuhg5w//ffUTzmKEqlsDlsSsNs8eeh6mohs8DnBISECVPDCLq5F7m9vUUnkY9OVd wIsj4+IiVliWDtSMt1QPHyPMVBm2QUUM6f+Apx1nRJEhf34grQtTdf1wMWftod8L Y/U3JERw+M6OKB9GcVRcRh+bbnPXR74c/1+o9TKWlYFVOpgXOBr172jh+7Czp4bk 1pO6iJBMgraZF+1SfV3NYQASo+gkLTf+epic02/N/IzpMoq8FD9IjvcHyyYFwXLO M6XDzw0JZtym9B+IbXQojka9/T7oA55MtzMcEOYVmmBtcRxXWmpHBGMjz6/Wuwb3 RZ9gAY5T8ecIpFyS9cb1Bl4Kf6KTuqy9PH10QPXEI1+2XeXGXZlfmrp2Ox0uVWl3 fqxYVi5T1BFrY7pXmL5aidr2aHdft+1x/iPuncp4RRqGCSNpC1zhFNNt1lMFY+EK bPXC4Hzu+tkBWlTPuD3KpThOjE179uE7f6KyLorZCiVP8MDec9moM5UiZdvnxUEp 6yQd1xMZ1LdnUJGDAFw6QAdslndIDXEt3am7cEHEmeFX7Iy9+WCSD1LFN6Z3IYSA I8IZDZ8AWFPp6hC2WIpqV+wLHO+TjMxBG/sHEhOuwhjM0K+UB707V3HWGZ2JUY6u nzugIAJ/kRefpyfDJEmxsGXlp7+/LP7gnZwg1h36tcaTC+1KwEg= =6L5m -----END PGP SIGNATURE----- --=-=-=-- --===============1487139413== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaWd0LWRldiBt YWlsaW5nIGxpc3QKaWd0LWRldkBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5m cmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pZ3QtZGV2Cg== --===============1487139413==--