Commit Graph

2 Commits

Author SHA1 Message Date
Jonas Ådahl
d84c7269b2 crtc/kms: Use MetaKmsPlane to check supported rotations and formats
Instead of manually retrieving supported transforms and formats from the
primary plane of the CRTC, use the MetaKmsPlane abstraction to find the
primary plane of the CRTC and check compatibility using the
MetaKmsPlane API. This removes the last user of direct KMS API usage
except for applying configuration.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
4d3e804391 kms: Add plane representation
A plane is one of three possible: primary, overlay and cursor. Each
plane can have various properties, such as possible rotations, formats
etc. Each plane can also be used with a set of CRTCs.

A primary plane is the "backdrop" of a CRTC, i.e. the primary output for
the composited frame that covers the whole CRTC. In general, mutter
composites to a stage view frame onto a framebuffer that is then put on
the primary plane.

An overlay plane is a rectangular area that can be displayed on top of
the primary plane. Eventually it will be used to place non-fullscreen
surfaces, potentially avoiding stage redraws.

A cursor plane is a plane placed on top of all the other planes, usually
used to put the mouse cursor sprite.

Initially, we only fetch the rotation properties, and we so far
blacklist all rotations except ones that ends up with the same
dimensions as with no rotations. This is because non-180° rotations
doesn't work yet due to incorrect buffer modifiers. To make it possible
to use non-180° rotations, changes necessary include among other things
finding compatible modifiers using atomic modesetting. Until then,
simply blacklist the ones we know doesn't work.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00