[PATCH v2 00/34] drm/amd/display: add AMD driver-specific properties for color mgmt
Melissa Wen
mwen at igalia.com
Fri Sep 8 14:52:29 UTC 2023
On 09/06, Harry Wentland wrote:
> On 2023-08-10 12:02, Melissa Wen wrote:
> > Hi all,
> >
> > Here is the next version of our work to enable AMD driver-specific color
> > management properties [1][2]. This series is a collection of
> > contributions from Joshua, Harry, and me to enhance the AMD KMS color
> > pipeline for Steam Deck/SteamOS by exposing additional pre-blending and
> > post-blending color capabilities from those available in the current DRM
> > KMS API[3].
> >
> > The userspace case here is Gamescope which is the compositor for
> > SteamOS. Gamescope is already using these features to implement its
> > color management pipeline [4].
> >
> > In this version, I try to address all concerns shared in the previous
> > one, i.e.:
> > - Replace DRM_ by AMDGPU_ prefix for transfer function enumeration;
> > - Explicitly define EOTFs and inverse EOTFs and set props accordingly;
> > - Document pre-defined transfer functions;
> > - Remove misleading comments;
> > - Remove post-blending/MPC shaper and 3D LUT support;
> > - Move driver-specific property operations from amdgpu_display.c to
> > amdgpu_dm_color.c;
> > - Reset planes if any color props change;
> > - Nits/small fixes;
> >
> > Bearing in mind the complexity of color concepts, I believe there is a
> > high chance of some misunderstanding from my side when defining EOTFs
> > and documenting pre-defined TFs. So, reviews are very important and
> > welcome (thanks in advance). FWIW, I added Harry as a co-developer of
> > this TF documentation since I based on his description of EOTF/inv_EOTF
> > and previous documentation work [5]. Let me know if there is a better
> > way for credits.
> >
> > Two DC patches were already applied and, therefore, removed from the
> > series. I added r-b according to previous feedback. We also add plane
> > CTM to driver-specific properties. As a result, this is the updated list
> > of all driver-specific color properties exposed by this series:
> >
> > - plane degamma LUT and pre-defined TF;
> > - plane HDR multiplier;
> > - plane CTM 3x4;
> > - plane shaper LUT and pre-defined TF;
> > - plane 3D LUT;
> > - plane blend LUT and pre-defined TF;
> > - CRTC gamma pre-defined TF;
> >
> > Remember you can find the AMD HW color capabilities documented here:
> > https://dri.freedesktop.org/docs/drm/gpu/amdgpu/display/display-manager.html#color-management-properties
> >
> > Worth mentioning that the pre-blending degamma block can use ROM curves
> > for some pre-defined TFs, but the other blocks use the AMD color module
> > to calculate this curve considering pre-defined coefficients.
> >
> > We need changes on DC gamut remap matrix to support the plane and CRTC
> > CTM on drivers that support both. I've sent a previous patch to apply
> > these changes to all DCN3+ families [6]. Here I use the same changes but
> > limited to DCN301. Just let me know if you prefer the previous/expanded
> > version.
> >
> > Finally, this is the Linux/AMD color management API before and after
> > blending with the driver-specific properties:
> >
> > +----------------------+
> > | PLANE |
> > | |
> > | +----------------+ |
> > | | AMD Degamma | |
> > | | | |
> > | | EOTF | 1D LUT | |
> > | +--------+-------+ |
> > | | |
> > | +--------v-------+ |
> > | | AMD HDR | |
> > | | Multiply | |
> > | +--------+-------+ |
> > | | |
> > | +--------v-------+ |
> > | | AMD CTM (3x4) | |
> > | +--------+-------+ |
> > | | |
> > | +--------v-------+ |
> > | | AMD Shaper | |
> > | | | |
> > | | inv_EOTF | | |
> > | | Custom 1D LUT | |
> > | +--------+-------+ |
> > | | |
> > | +--------v-------+ |
> > | | AMD 3D LUT | |
> > | | 17^3/12-bit | |
> > | +--------+-------+ |
> > | | |
> > | +--------v-------+ |
> > | | AMD Blend | |
> > | | | |
> > | | EOTF | 1D LUT | |
> > | +--------+-------+ |
> > | | |
> > ++----------v---------++
> > || Blending ||
> > ++----------+---------++
> > | CRTC | |
> > | | |
> > | +-------v-------+ |
> > | | DRM Degamma | |
> > | | | |
> > | | Custom 1D LUT | |
> > | +-------+-------+ |
> > | | |
> > | +-------v-------+ |
> > | | DRM CTM (3x3) | |
> > | +-------+-------+ |
> > | | |
> > | +-------v-------+ |
> > | | DRM Gamma | |
> > | | | |
> > | | Custom 1D LUT | |
> > | +---------------+ |
> > | | *AMD Gamma | |
> > | | inv_EOTF | |
> > | +---------------+ |
> > | |
> > +----------------------+
> >
> > Let me know your thoughts.
> >
>
> Thanks again for your amazing work on this.
>
> Patches 5, 6, 14, 16, and 24 are
> Reviewed-by: Harry Wentland <harry.wentland at amd.com>
>
> I left comments on the remaining unreviewed patches.
Thank you for the detailed review. I'll address your comments and also
those from Pekka in the next version.
Melissa
>
> Harry
>
> > Best Regards,
> >
> > Melissa Wen
> >
> > [1] https://lore.kernel.org/dri-devel/20230423141051.702990-1-mwen@igalia.com
> > [2] https://lore.kernel.org/dri-devel/20230523221520.3115570-1-mwen@igalia.com
> > [3] https://github.com/ValveSoftware/gamescope/blob/master/src/docs/Steam%20Deck%20Display%20Pipeline.png
> > [4] https://github.com/ValveSoftware/gamescope
> > [5] https://lore.kernel.org/dri-devel/20210730204134.21769-1-harry.wentland@amd.com
> > [6] https://lore.kernel.org/dri-devel/20230721132431.692158-1-mwen@igalia.com
> >
> >
> > Harry Wentland (1):
> > drm/amd/display: fix segment distribution for linear LUTs
> >
> > Joshua Ashton (14):
> > drm/amd/display: add plane degamma TF driver-specific property
> > drm/amd/display: add plane HDR multiplier driver-specific property
> > drm/amd/display: add plane blend LUT and TF driver-specific properties
> > drm/amd/display: add CRTC gamma TF support
> > drm/amd/display: set sdr_ref_white_level to 80 for out_transfer_func
> > drm/amd/display: mark plane as needing reset if color props change
> > drm/amd/display: add plane degamma TF and LUT support
> > drm/amd/display: add dc_fixpt_from_s3132 helper
> > drm/amd/display: add HDR multiplier support
> > drm/amd/display: handle empty LUTs in __set_input_tf
> > drm/amd/display: add plane blend LUT and TF support
> > drm/amd/display: allow newer DC hardware to use degamma ROM for PQ/HLG
> > drm/amd/display: copy 3D LUT settings from crtc state to stream_update
> > drm/amd/display: Use 3x4 CTM for plane CTM
> >
> > Melissa Wen (19):
> > drm/drm_mode_object: increase max objects to accommodate new color
> > props
> > drm/drm_property: make replace_property_blob_from_id a DRM helper
> > drm/drm_plane: track color mgmt changes per plane
> > drm/amd/display: add driver-specific property for plane degamma LUT
> > drm/amd/display: explicitly define EOTF and inverse EOTF
> > drm/amd/display: document AMDGPU pre-defined transfer functions
> > drm/amd/display: add plane 3D LUT driver-specific properties
> > drm/amd/display: add plane shaper LUT and TF driver-specific
> > properties
> > drm/amd/display: add CRTC gamma TF driver-specific property
> > drm/amd/display: add comments to describe DM crtc color mgmt behavior
> > drm/amd/display: encapsulate atomic regamma operation
> > drm/amd/display: decouple steps for mapping CRTC degamma to DC plane
> > drm/amd/display: reject atomic commit if setting both plane and CRTC
> > degamma
> > drm/amd/display: add plane shaper LUT support
> > drm/amd/display: add plane shaper TF support
> > drm/amd/display: add plane 3D LUT support
> > drm/amd/display: set stream gamut remap matrix to MPC for DCN301
> > drm/amd/display: add plane CTM driver-specific property
> > drm/amd/display: add plane CTM support
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 71 ++
> > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 34 +-
> > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 101 +++
> > .../amd/display/amdgpu_dm/amdgpu_dm_color.c | 805 ++++++++++++++++--
> > .../amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 72 ++
> > .../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 224 ++++-
> > .../amd/display/dc/dcn10/dcn10_cm_common.c | 93 +-
> > .../drm/amd/display/dc/dcn30/dcn30_hwseq.c | 37 +
> > .../drm/amd/display/dc/dcn30/dcn30_hwseq.h | 3 +
> > .../drm/amd/display/dc/dcn301/dcn301_init.c | 2 +-
> > .../gpu/drm/amd/display/include/fixed31_32.h | 12 +
> > drivers/gpu/drm/arm/malidp_crtc.c | 2 +-
> > drivers/gpu/drm/drm_atomic.c | 1 +
> > drivers/gpu/drm/drm_atomic_state_helper.c | 1 +
> > drivers/gpu/drm/drm_atomic_uapi.c | 43 +-
> > drivers/gpu/drm/drm_property.c | 49 ++
> > include/drm/drm_mode_object.h | 2 +-
> > include/drm/drm_plane.h | 7 +
> > include/drm/drm_property.h | 6 +
> > include/uapi/drm/drm_mode.h | 8 +
> > 20 files changed, 1446 insertions(+), 127 deletions(-)
> >
>
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