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| author | Sebastian Wick <sebastian.wick@redhat.com> | 2024-04-03 16:20:47 +0200 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2024-04-24 16:32:06 +0000 |
| commit | 9069af78a71f6b2aadb11334e5bef9a670a5043d (patch) | |
| tree | 2810a03fa9ec5b3e3631c1b2f275dbf46dabb8f5 /protocol/wayland.xml | |
| parent | client: fix invalid doc command for WL_MARSHAL_FLAG_DESTROY (diff) | |
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protocol: define content updates and their internal queue
Multiple protocols use the term content update without a fill
definition. It makes sense to define it in the core protocol so that not
every other protocol has to define it.
This is supposed to retain the current semantics and only changes the
documentation while defining new terms.
Signed-off-by: Sebastian Wick <sebastian.wick@redhat.com>
Diffstat (limited to 'protocol/wayland.xml')
| -rw-r--r-- | protocol/wayland.xml | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/protocol/wayland.xml b/protocol/wayland.xml index b387330..091fa15 100644 --- a/protocol/wayland.xml +++ b/protocol/wayland.xml @@ -1656,16 +1656,18 @@ <description summary="commit pending surface state"> Surface state (input, opaque, and damage regions, attached buffers, etc.) is double-buffered. Protocol requests modify the pending state, - as opposed to the current state in use by the compositor. A commit - request atomically applies all pending state, replacing the current - state. After commit, the new pending state is as documented for each - related request. + as opposed to the active state in use by the compositor. - On commit, a pending wl_buffer is applied first, and all other state - second. This means that all coordinates in double-buffered state are - relative to the new wl_buffer coming into use, except for - wl_surface.attach itself. If there is no pending wl_buffer, the - coordinates are relative to the current surface contents. + A commit request atomically creates a content update from the pending + state, even if the pending state has not been touched. The content + update is placed in a queue until it becomes active. After commit, the + new pending state is as documented for each related request. + + When the content update is applied, the wl_buffer is applied before all + other state. This means that all coordinates in double-buffered state + are relative to the newly attached wl_buffers, except for + wl_surface.attach itself. If there is no newly attached wl_buffer, the + coordinates are relative to the previous content update. All requests that need a commit to become effective are documented to affect double-buffered state. |