[PATCH 0/4] vkms: Switch to shadow-buffered plane state

[Thomas Zimmermann]

Vkms copies each plane's framebuffer into the output buffer; essentially
using a shadow buffer. DRM provides struct drm_shadow_plane_state, which
handles the details of mapping/unmapping shadow buffers into memory for
active planes.

Convert vkms to the helpers. Makes vkms use shared code and gives more
test exposure to shadow-plane helpers.

Thomas Zimmermann (4):
  drm/gem: Export implementation of shadow-plane helpers
  drm/vkms: Inherit plane state from struct drm_shadow_plane_state
  drm/vkms: Let shadow-plane helpers prepare the plane's FB
  drm/vkms: Use dma-buf mapping from shadow-plane state for composing

 drivers/gpu/drm/drm_gem_atomic_helper.c | 55 ++++++++++++++++++++++--
 drivers/gpu/drm/vkms/vkms_composer.c    | 26 ++++++-----
 drivers/gpu/drm/vkms/vkms_drv.h         |  6 ++-
 drivers/gpu/drm/vkms/vkms_plane.c       | 57 ++++++-------------------
 include/drm/drm_gem_atomic_helper.h     |  6 +++
 5 files changed, 86 insertions(+), 64 deletions(-)


base-commit: 3d3b5479895dd6dd133571ded4318adf595708ba
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2.32.0