drm/blend: Define the direction of Z position values

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We forgot that.

Proof is the one igt testcase we have:

https://gitlab.freedesktop.org/drm/igt-gpu-tools/blob/master/tests/kms_atomic.c#L280

While at it also document that we have immutable zpos properties in
some cases.

Reported-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Cc: Pekka Paalanen <pekka.paalanen@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190906144459.16025-1-daniel.vetter@ffwll.ch

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This commit is contained in:

Daniel Vetter 2019-09-06 16:44:59 +02:00

parent c7581a414d

commit 42770cbf18

1 changed files with 6 additions and 1 deletions

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7

drivers/gpu/drm/drm_blend.c

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