drm/vkms: Add enumerated 1D curve colorop

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This patch introduces a VKMS color pipeline that includes two
drm_colorops for named transfer functions. For now the only ones
supported are sRGB EOTF, sRGB Inverse EOTF, and a Linear TF.
We will expand this in the future but I don't want to do so
without accompanying IGT tests.

We introduce a new vkms_luts.c file that hard-codes sRGB EOTF,
sRGB Inverse EOTF, and a linear EOTF LUT. These have been
generated with 256 entries each as IGT is currently testing
only 8 bpc surfaces. We will likely need higher precision
but I'm reluctant to make that change without clear indication
that we need it. We'll revisit and, if necessary, regenerate
the LUTs when we have IGT tests for higher precision buffers.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>
Signed-off-by: Simon Ser <contact@emersion.fr>
Link: https://patch.msgid.link/20251115000237.3561250-16-alex.hung@amd.com

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This commit is contained in:

Harry Wentland 2025-11-14 17:01:40 -07:00 • committed by Simon Ser

parent 08b651cad2

commit c1e578bd08

8 changed files with 968 additions and 2 deletions

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4

drivers/gpu/drm/vkms/Makefile

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86

drivers/gpu/drm/vkms/vkms_colorop.c

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51

drivers/gpu/drm/vkms/vkms_composer.c

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1

drivers/gpu/drm/vkms/vkms_drv.c

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3

drivers/gpu/drm/vkms/vkms_drv.h

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811

drivers/gpu/drm/vkms/vkms_luts.c

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12

drivers/gpu/drm/vkms/vkms_luts.h

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2

drivers/gpu/drm/vkms/vkms_plane.c

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