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linux-explicit-synchronization: Clarify implicit synchronization guarantees of release events

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Clarify that after zwp_buffer_release_v1 events, otherwise unused
buffers can be reused without any additional implicit synchronization.
This is in contrast to wl_buffer.release, which doesn't guarantee that
implicit synchronization is not required to safely use a buffer after
the event is received.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This commit is contained in:
Alexandros Frantzis 2018-11-29 11:35:30 +02:00 • committed by Pekka Paalanen
parent 08903bdf90
commit 57423eac60
1 changed files with 10 additions and 0 deletions
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10
unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml
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@ -226,6 +226,11 @@
signaled when all operations by the compositor on that buffer for that signaled when all operations by the compositor on that buffer for that
commit have finished. commit have finished.
Once the fence has signaled, and assuming the associated buffer is not
pending release from other wl_surface.commit requests, no additional
explicit or implicit synchronization is required to safely reuse or
destroy the buffer.
This event destroys the zwp_linux_buffer_release_v1 object. This event destroys the zwp_linux_buffer_release_v1 object.
</description> </description>
<arg name="fence" type="fd" summary="fence for last operation on buffer"/> <arg name="fence" type="fd" summary="fence for last operation on buffer"/>
@ -238,6 +243,11 @@
using it, or has a guarantee that all its operations on that buffer for using it, or has a guarantee that all its operations on that buffer for
that commit have finished. that commit have finished.
Once this event is received, and assuming the associated buffer is not
pending release from other wl_surface.commit requests, no additional
explicit or implicit synchronization is required to safely reuse or
destroy the buffer.
This event destroys the zwp_linux_buffer_release_v1 object. This event destroys the zwp_linux_buffer_release_v1 object.
</description> </description>
</event> </event>