drm/amd/display: Fix COLOR_SPACE_YCBCR2020_TYPE matrix

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commit 973a9c810c upstream.

The YCC conversion matrix for RGB -> COLOR_SPACE_YCBCR2020_TYPE is
missing the values for the fourth column of the matrix.

The fourth column of the matrix is essentially just a value that is
added given that the color is 3 components in size.
These values are needed to bias the chroma from the [-1, 1] -> [0, 1]
range.

This fixes color being very green when using Gamescope HDR on HDMI
output which prefers YCC 4:4:4.

Fixes: 40df2f809e ("drm/amd/display: color space ycbcr709 support")
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Joshua Ashton 2023-01-10 22:50:42 +00:00 • committed by Greg Kroah-Hartman

parent 87e84d0ff9

commit b105b79ea0

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c

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