[RFC v4 00/22] IGT tests for the KMS Color Pipeline API

[Bhanuprakash Modem]

This series introduces support for
* drm_colorop DRM objects
* COLOR_PIPELINE plane property

Kernel changes:
https://gitlab.freedesktop.org/hwentland/linux/-/merge_requests/5

It also adds a new kms_colorop test case that tests the color pipeline
API. The tests are designed to be easily extensible with a "transform"
and "compare" function pointer for each test. The "transform" function
performs the transformations under test via SW routines. The "compare"
function compares the DRM/KMS result (via a writeback connector) with
the result derived via the SW "transform".

There are three tests for LUTs:
 - plane-srgb_eotf: pre-blending sRGB EOTF
 - plane-srgb_inv_eotf: pre-blending sRGB Inverse EOTF
 - plane-srgb_eotf-srgb_inv_eotf: pre-blending sRGB EOTF,
   followed by its inverse

And a number of tests for matrices.

v3:
 - Remove need for IOCTLs and libdrm changes
 - Test colorop properties with both atomic and legacy code paths
 - move enum drm_colorop_type to drm_mode.h
 - Add descriptions for public functions in lib (Kamil)
 - Use SPDX style license identifier (Kamil)
 - Replace Skia license comment with copyright note in file header
 - Fix kms_colorop subtests if applicable color pipeline not found

v4: (Bhanu)
 - Though v3 required some cleanup, I am not touching it, instead fix any issue
   as new patch (we may need to squash those patches)
 - Rebase v3
 - Move few helpers to common place (kms_color_helper) to reuse by multiple tests
 - New helpers to cleanup the colorop props.
 - Helpers to support custom 1D LUT & CTM 3x3
 - New subtests to validate Intel plane color pipeline, please find the
   KMD changes: https://patchwork.freedesktop.org/series/129812/

Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Pekka Paalanen <pekka.paalanen at collabora.com>
Cc: Simon Ser <contact at emersion.fr>
Cc: Harry Wentland <harry.wentland at amd.com>
Cc: Melissa Wen <mwen at igalia.com>
Cc: Jonas Ådahl <jadahl at redhat.com>
Cc: Sebastian Wick <sebastian.wick at redhat.com>
Cc: Shashank Sharma <shashank.sharma at amd.com>
Cc: Alexander Goins <agoins at nvidia.com>
Cc: Joshua Ashton <joshua at froggi.es>
Cc: Michel Dänzer <mdaenzer at redhat.com>
Cc: Aleix Pol <aleixpol at kde.org>
Cc: Xaver Hugl <xaver.hugl at gmail.com>
Cc: Victoria Brekenfeld <victoria at system76.com>
Cc: Sima <daniel at ffwll.ch>
Cc: Uma Shankar <uma.shankar at intel.com>
Cc: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
Cc: Naseer Ahmed <quic_naseer at quicinc.com>
Cc: Christopher Braga <quic_cbraga at quicinc.com>
Cc: Abhinav Kumar <quic_abhinavk at quicinc.com>
Cc: Arthur Grillo <arthurgrillo at riseup.net>
Cc: Hector Martin <marcan at marcan.st>
Cc: Liviu Dudau <Liviu.Dudau at arm.com>
Cc: Sasha McIntosh <sashamcintosh at google.com>

Bhanuprakash Modem (10):
  tests/kms_properties: Fix compilation errors
  lib/igt_kms: Destroy colorops on exit
  lib/colorops: Move few helpers to common place to reuse
  drm-uapi: Add 3x3 CTM
  drm-uapi: Add custom 1D LUT
  lib/igt_color: Add support for 3x3 matrices
  lib/colorops: Add support for Custom 1D LUT
  lib/igt_kms: Increase the colorops count
  tests/kms_color_helper: Add helpers to clear colorops data
  tests/kms_color: Add plane color pipeline tests for Intel hardware

Harry Wentland (12):
  lib/drmtest: Add is_vkms_device()
  lib/igt_kms: Introduce DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
  include/drm-uapi: Add COLOROP object
  lib/igt_kms: Introduce drm_colorop and COLOR_PIPELINE
  tests/kms_properties: Add colorop properties test
  igt/color: Add SW color transform functionality
  lib/igt_fb: Add copy_fb function
  tests/kms_colorop: Add kms_colorop tests
  drm-uapi: Add 3x4 CTM
  lib/igt_kms: Add support for DATA colorop property
  lib/igt_color: Add support for 3x4 matrices
  tests/kms_colorop: Add 3x4 CTM tests

 include/drm-uapi/drm.h      |  15 ++
 include/drm-uapi/drm_mode.h |  52 +++++
 lib/drmtest.c               |   5 +
 lib/drmtest.h               |   1 +
 lib/igt_color.c             | 361 +++++++++++++++++++++++++++++
 lib/igt_color.h             |  81 +++++++
 lib/igt_fb.c                |  40 +++-
 lib/igt_fb.h                |   3 +
 lib/igt_kms.c               | 312 ++++++++++++++++++++++++-
 lib/igt_kms.h               |  97 +++++++-
 lib/meson.build             |   1 +
 tests/kms_color.c           | 273 +++++++++++++++++++++-
 tests/kms_color_helper.c    | 313 ++++++++++++++++++++++++++
 tests/kms_color_helper.h    |  91 ++++++++
 tests/kms_colorop.c         | 438 ++++++++++++++++++++++++++++++++++++
 tests/kms_properties.c      |  72 ++++++
 tests/meson.build           |   2 +
 17 files changed, 2140 insertions(+), 17 deletions(-)
 create mode 100644 lib/igt_color.c
 create mode 100644 lib/igt_color.h
 create mode 100644 tests/kms_colorop.c

--
2.43.0