[PATCH 0/2] drm/vkms: Fix plane blending z-order

[Louis Chauvet]

As reported by Marius [1], the current blending algorithm for vkms planes 
is not future-proof. Currently the z-ordering is only garanteed by the 
creation order. As the future ConfigFS interface will allows to create 
planes, this order may vary.

To avoid this, add the zpos property and blend the planes according to 
this zpos order.

[1]:https://lore.kernel.org/all/aHpGGxZyimpJ8Ehz@xpredator/

Signed-off-by: Louis Chauvet <louis.chauvet at bootlin.com>
---
Louis Chauvet (2):
      drm/vkms: Add zpos property to planes
      drm/vkms: Properly order plane for blending

 drivers/gpu/drm/vkms/vkms_crtc.c  | 26 ++++++++++++++++++++------
 drivers/gpu/drm/vkms/vkms_drv.c   |  1 +
 drivers/gpu/drm/vkms/vkms_plane.c | 12 ++++++++++++
 3 files changed, 33 insertions(+), 6 deletions(-)
---
base-commit: 82928cc1c2b2be16ea6ee9e23799ca182e1cd37c
change-id: 20250801-vkms-fix-zpos-1dc6a3f51a50

Best regards,
-- 
Louis Chauvet <louis.chauvet at bootlin.com>