Tags

sent/20250912-post-blend-colorops-bec963278a18-v1

Support post-blend color pipeline API

This series introduces support for the KMS post-blend color pipeline
API, which is currently under review as an RFC [1], and extends the test
coverage for it.

This series is based on the pre-blend color pipeline API IGT series [2].

Tested on VKMS. At the moment the post-blend color pipeline support in
VKMS is only available at the development branch [3], but it will be
added to the kernel patch series submission for v2.

Caveats:

* The new tests

  kms_colorop@xr24-xr24-plane-ctm_3x4_bt709_dec-crtc-ctm_3x4_bt709_enc
  kms_colorop@xr24-xr24-plane-ctm_3x4_bt709_enc-crtc-ctm_3x4_bt709_dec

  fail when running on the VKMS driver due to clamping to u16 happening
  in-between pre- and post-blend pipelines.

* The tests

  kms_color@gamma
  kms_color@invalid-gamma-lut-sizes
  kms_color@legacy-gamma-reset

  now get skipped since DRM_CLIENT_CAP_POST_BLEND_COLOR_PIPELINE is set
  in the common igt_display_require(), hiding the now deprecated color
  properties (GAMMA_LUT, DEGAMMA_LUT, CTM) required for those tests.

[1] https://lore.kernel.org/dri-devel/20250822-mtk-post-blend-color-pipeline-v1-0-a9446d4aca82@collabora.com/
[2] https://lore.kernel.org/igt-dev/20250815040659.3321102-1-alex.hung@amd.com/
[3] https://gitlab.collabora.com/nfraprado/linux/-/commits/b4/mtk-post-blend-color-pipeline

To: Development mailing list for IGT GPU Tools <igt-dev@lists.freedesktop.org>
Cc: Alex Hung <alex.hung@amd.com>
Cc: <harry.wentland@amd.com>
Cc: <leo.liu@amd.com>
Cc: daniels@collabora.com
Cc: leandro.ribeiro@collabora.com
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>

---
Nícolas F. R. A. Prado (9):
      include/drm-uapi: Sync with drm-next
      lib/igt_kms: Store pointer to display instead of plane in colorop
      lib/igt_kms: Move color pipeline properties in igt_plane_t to struct
      lib/igt_kms: Support post-blend colorops
      tests/kms_colorop: Check for colorop unique id in CRTCs as well
      tests/kms_colorop: Allow specifying post-blend colorops
      tests/kms_colorop: Add tests for post-blend color pipeline
      tests/kms_properties: Ignore color properties in CRTC based on pipeline
      tests/kms_properties: Test colorop properties on CRTC

 include/drm-uapi/drm.h |  16 ++++
 lib/igt_kms.c          | 111 +++++++++++++++++++-------
 lib/igt_kms.h          |  23 ++++--
 tests/kms_colorop.c    | 207 ++++++++++++++++++++++++++++++++++---------------
 tests/kms_properties.c |  39 +++++++++-
 5 files changed, 296 insertions(+), 100 deletions(-)
---
base-commit: 302ff647cccb615f32942cdbe0e8084fe462cd05
change-id: 20250912-post-blend-colorops-bec963278a18

Best regards,