Melissa Wen 4278d65a41 drm/amd/display: use halving distribution for all encode-to-linear curves ... In encode-to-linear conversions, LUT entries should be uniformly distributed across the input range: non-linear encodings are already approximately perceptually uniform, so every input code carries the same weight. A fixed count per region does the opposite, concentrating entries on the darker values and leaving few for the bright end, whereas halving distribution spaces all 256 entries uniformly. This holds for any encoded input, so remove the PQ/sRGB condition from commit "drm/amd/display: use halving distribution for PQ/sRGB linearizing LUT" and apply halving to all encode-to-linear operations (pre-defined TF or user LUTs). It fixes the following IGT kms_colorop subtests: - plane-XR30-XR30-srgb_inv_eotf_lut-srgb_eotf_lut - plane-XR30-XR30-gamma_2_2-gamma_2_2_inv-gamma_2_2 Fixes: a71d2b051f ("drm/amd/display: use halving distribution for PQ/sRGB linearizing LUT") Reviewed-by: Alex Hung <alex.hung@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Melissa Wen <mwen@igalia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 6df7c9c307e72e7f13829e94edc89134f0764775)		2026-09-02 16:54:09 -04:00
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dcn30_afmt.c	drm/amd/display: Remove unused local variables	2023-02-23 17:36:00 -05:00
dcn30_afmt.h	drm/amd/display: Add VPG and AFMT low power support for DCN3.1	2021-09-14 15:57:11 -04:00
dcn30_cm_common.c	drm/amd/display: use halving distribution for all encode-to-linear curves	2026-09-02 16:54:09 -04:00
dcn30_mmhubbub.c	drm/amd/display: Update MCIF_ADDR macro to address IGT DWB regression	2026-04-28 14:27:35 -04:00
dcn30_mmhubbub.h	drm/amd/display: rework macros for DWB register access	2022-11-15 13:35:15 -05:00
dcn30_opp.h	drm/amd/display: Add DCN3 OPP header	2020-07-01 01:59:14 -04:00
dcn30_vpg.c	drm/amd/display: Fix issue with dynamic bpp change for DCN3x	2021-09-23 15:17:30 -04:00
dcn30_vpg.h	drm/amd/display: refactor vpg.h	2024-04-09 22:16:02 -04:00
Makefile	drm/amd/display: Refactoring HPO	2024-07-23 17:35:45 -04:00