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Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A105.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4565 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: Sasha McIntosh , Liviu Dudau , Victoria Brekenfeld , =?UTF-8?q?Michel=20D=C3=A4nzer?= , Arthur Grillo , Sebastian Wick , Shashank Sharma , wayland-devel@lists.freedesktop.org, =?UTF-8?q?Jonas=20=C3=85dahl?= , Uma Shankar , Abhinav Kumar , Naseer Ahmed , Melissa Wen , Aleix Pol , Christopher Braga , Pekka Paalanen , Hector Martin , Xaver Hugl , Joshua Ashton Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This is an early RFC set for a color pipeline API, along with a sample implementation in VKMS. All the key API bits are here. VKMS now supports two named transfer function colorops and we have an IGT test that confirms that sRGB EOTF, followed by its inverse gives us expected results within +/- 1 8 bpc codepoint value. This patchset is grouped as follows: - Patches 1-2: couple general patches/fixes - Patches 3-5: introduce kunit to VKMS - Patch 6: description of motivation and details behind the Color Pipeline API. If you're reading nothing else but are interested in the topic I highly recommend you take a look at this. - Patches 7-15: Add core DRM API bits - Patches 15-17: VKMS implementation There are plenty of things that I would like to see here but haven't had a chance to look at. These will (hopefully) be addressed in future iterations: - Abandon IOCTLs and discover colorops as clients iterate the pipeline - Add color_pipeline client cap and deprecate existing color encoding and color range properties. See https://lists.freedesktop.org/archives/dri-devel/2023-September/422643.html - Add CTM colorop to VKMS - Add custom LUT colorops to VKMS - Add pre-blending 3DLUT with tetrahedral interpolation to VKMS - How to support HW which can't bypass entire pipeline? - Add ability to create colorops that don't have BYPASS - Can we do a LOAD / COMMIT model for LUTs (and other properties)? IGT tests can be found at https://gitlab.freedesktop.org/hwentland/igt-gpu-tools/-/merge_requests/1 IGT patches are also being sent to the igt-dev mailing list. libdrm changes to support the new IOCTLs are at https://gitlab.freedesktop.org/hwentland/drm/-/merge_requests/1 If you prefer a gitlab MR for review you can find it at https://gitlab.freedesktop.org/hwentland/linux/-/merge_requests/5 A slightly different approach for a Color Pipeline API was sent by Uma Shankar and can be found at https://patchwork.freedesktop.org/series/123024/ The main difference is that his approach is not introducing a new DRM core object but instead exposes color pipelines via blob properties. There are pros and cons to both approaches. v2: - Rebased on drm-misc-next - Introduce a VKMS Kunit so we can test LUT functionality in vkms_composer - Incorporate feedback in color_pipeline.rst doc - Add support for sRGB inverse EOTF - Add 2nd enumerated TF colorop to VKMS - Fix LUTs and some issues with applying LUTs in VKMS Cc: Ville Syrjala Cc: Pekka Paalanen Cc: Simon Ser Cc: Harry Wentland Cc: Melissa Wen Cc: Jonas Ådahl Cc: Sebastian Wick Cc: Shashank Sharma Cc: Alexander Goins Cc: Joshua Ashton Cc: Michel Dänzer Cc: Aleix Pol Cc: Xaver Hugl Cc: Victoria Brekenfeld Cc: Sima Cc: Uma Shankar Cc: Naseer Ahmed Cc: Christopher Braga Cc: Abhinav Kumar Cc: Arthur Grillo Cc: Hector Martin Cc: Liviu Dudau Cc: Sasha McIntosh Harry Wentland (17): drm/atomic: Allow get_value for immutable properties on atomic drivers drm: Don't treat 0 as -1 in drm_fixp2int_ceil drm/vkms: Create separate Kconfig file for VKMS drm/vkms: Add kunit tests for VKMS LUT handling drm/vkms: Avoid reading beyond LUT array drm/doc/rfc: Describe why prescriptive color pipeline is needed drm/colorop: Introduce new drm_colorop mode object drm/colorop: Add TYPE property drm/color: Add 1D Curve subtype drm/colorop: Add BYPASS property drm/colorop: Add NEXT property drm/colorop: Add atomic state print for drm_colorop drm/colorop: Add new IOCTLs to retrieve drm_colorop objects drm/plane: Add COLOR PIPELINE property drm/colorop: Add NEXT to colorop state print drm/vkms: Add enumerated 1D curve colorop drm/vkms: Add kunit tests for linear and sRGB LUTs Documentation/gpu/rfc/color_pipeline.rst | 347 ++++++++ drivers/gpu/drm/Kconfig | 14 +- drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_atomic.c | 155 ++++ drivers/gpu/drm/drm_atomic_helper.c | 12 + drivers/gpu/drm/drm_atomic_state_helper.c | 5 + drivers/gpu/drm/drm_atomic_uapi.c | 110 +++ drivers/gpu/drm/drm_colorop.c | 384 +++++++++ drivers/gpu/drm/drm_crtc_internal.h | 4 + drivers/gpu/drm/drm_ioctl.c | 5 + drivers/gpu/drm/drm_mode_config.c | 7 + drivers/gpu/drm/drm_mode_object.c | 3 +- drivers/gpu/drm/drm_plane_helper.c | 2 +- drivers/gpu/drm/vkms/Kconfig | 20 + drivers/gpu/drm/vkms/Makefile | 6 +- drivers/gpu/drm/vkms/tests/.kunitconfig | 4 + drivers/gpu/drm/vkms/tests/Makefile | 4 + drivers/gpu/drm/vkms/tests/vkms_color_tests.c | 100 +++ drivers/gpu/drm/vkms/vkms_colorop.c | 85 ++ drivers/gpu/drm/vkms/vkms_composer.c | 77 +- drivers/gpu/drm/vkms/vkms_composer.h | 25 + drivers/gpu/drm/vkms/vkms_drv.h | 4 + drivers/gpu/drm/vkms/vkms_luts.c | 802 ++++++++++++++++++ drivers/gpu/drm/vkms/vkms_luts.h | 12 + drivers/gpu/drm/vkms/vkms_plane.c | 2 + include/drm/drm_atomic.h | 82 ++ include/drm/drm_atomic_uapi.h | 3 + include/drm/drm_colorop.h | 235 +++++ include/drm/drm_fixed.h | 2 +- include/drm/drm_mode_config.h | 18 + include/drm/drm_plane.h | 10 + include/uapi/drm/drm.h | 3 + include/uapi/drm/drm_mode.h | 22 + 33 files changed, 2530 insertions(+), 35 deletions(-) create mode 100644 Documentation/gpu/rfc/color_pipeline.rst create mode 100644 drivers/gpu/drm/drm_colorop.c create mode 100644 drivers/gpu/drm/vkms/Kconfig create mode 100644 drivers/gpu/drm/vkms/tests/.kunitconfig create mode 100644 drivers/gpu/drm/vkms/tests/Makefile create mode 100644 drivers/gpu/drm/vkms/tests/vkms_color_tests.c create mode 100644 drivers/gpu/drm/vkms/vkms_colorop.c create mode 100644 drivers/gpu/drm/vkms/vkms_composer.h create mode 100644 drivers/gpu/drm/vkms/vkms_luts.c create mode 100644 drivers/gpu/drm/vkms/vkms_luts.h create mode 100644 include/drm/drm_colorop.h -- 2.42.0