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. Best Regards, Melissa Wen [1] https://lore.kernel.org/dri-devel/20230423141051.702990-1-mwen@xxxxxxxxxx [2] https://lore.kernel.org/dri-devel/20230523221520.3115570-1-mwen@xxxxxxxxxx [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@xxxxxxx [6] https://lore.kernel.org/dri-devel/20230721132431.692158-1-mwen@xxxxxxxxxx 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(-) -- 2.40.1
