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authorAlexandros Frantzis <alexandros.frantzis@collabora.com>2018-11-29 11:35:30 +0200
committerPekka Paalanen <pekka.paalanen@collabora.com>2018-12-14 14:01:54 +0200
commit57423eac60cc234ebfad15f394488a47f69afe16 (patch)
treec439069d96fd0c9bc4a20b1617467832e866c559 /unstable
parent08903bdf90d8051b9e650ac2bcef3d73188a03e6 (diff)
linux-explicit-synchronization: Clarify implicit synchronization guarantees of release events
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>
Diffstat (limited to 'unstable')
-rw-r--r--unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml10
1 files changed, 10 insertions, 0 deletions
diff --git a/unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml b/unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml
index 6d5783d..d0a8cf0 100644
--- a/unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml
+++ b/unstable/linux-explicit-synchronization/linux-explicit-synchronization-unstable-v1.xml
@@ -226,6 +226,11 @@
signaled when all operations by the compositor on that buffer for that
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.
</description>
<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
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.
</description>
</event>