From patchwork Fri Jul 8 18:21:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12911647 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8026BCCA47B for ; Fri, 8 Jul 2022 18:21:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B82910EBDA; Fri, 8 Jul 2022 18:21:50 +0000 (UTC) Received: from michel.telenet-ops.be (michel.telenet-ops.be [IPv6:2a02:1800:110:4::f00:18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1FE9B10EBD0 for ; Fri, 8 Jul 2022 18:21:46 +0000 (UTC) Received: from ramsan.of.borg ([84.195.186.194]) by michel.telenet-ops.be with bizsmtp id siMm2700L4C55Sk06iMmkz; Fri, 08 Jul 2022 20:21:46 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1o9sbq-002fMA-Cx; Fri, 08 Jul 2022 20:21:46 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1o9sbp-00BtSF-Vs; Fri, 08 Jul 2022 20:21:46 +0200 From: Geert Uytterhoeven To: dri-devel@lists.freedesktop.org Subject: [PATCH libdrm v2 00/10] Add support for low-color frame buffer formats Date: Fri, 8 Jul 2022 20:21:30 +0200 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Geert Uytterhoeven Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi all, A long outstanding issue with the DRM subsystem has been the lack of support for low-color displays, as used typically on older desktop systems, and on small embedded displays. This patch series adds support for color-indexed frame buffer formats with 2, 4, and 16 colors. It has been tested on ARAnyM using a work-in-progress Atari DRM driver. Changes compared to v1: - SMPTE color LUT accuracy, - Factor out smpte color LUT, - Restructure patches, - Improve descriptions. - Store number of colors for indexed formats, - Add SMPTE pattern support for the C1 and C2 formats. Please refer to [2] for related Linux DRM patches and background information. Thanks for your comments! [1] "[PATCH libdrm 0/3] Add support for low-color frame buffer formats" https://lore.kernel.org/r/cover.1646683737.git.geert@linux-m68k.org [2] "[PATCH v3 00/10] drm: Add support for low-color frame buffer formats" https://lore.kernel.org/r/cover.1657294931.git.geert@linux-m68k.org Geert Uytterhoeven (10): util: Improve SMPTE color LUT accuracy util: Factor out and optimize C8 SMPTE color LUT [RFC] drm_fourcc: Add DRM_FORMAT_C[124] util: Add support for DRM_FORMAT_C[124] util: Store number of colors for indexed formats util: Add SMPTE pattern support for C4 format util: Add SMPTE pattern support for C1 format util: Add SMPTE pattern support for C2 format modetest: Add support for DRM_FORMAT_C[124] modetest: Add SMPTE pattern support for C4 format include/drm/drm_fourcc.h | 5 +- tests/modetest/buffers.c | 15 ++ tests/modetest/modetest.c | 9 +- tests/util/format.c | 5 +- tests/util/format.h | 1 + tests/util/pattern.c | 416 ++++++++++++++++++++++++++++++++++---- tests/util/pattern.h | 2 +- 7 files changed, 409 insertions(+), 44 deletions(-) Acked-by: Sam Ravnborg