[PATCH krh/wayland/next] protocol: clarify multiple wl_surface.attach

[Pekka Paalanen]

Explicitly say what happens with the wl_buffer.release event, if you
attach several wl_buffers without a commit in between.

Reported-by: David Herrmann <dh.herrmann at googlemail.com>
Signed-off-by: Pekka Paalanen <ppaalanen at gmail.com>
---
 protocol/wayland.xml |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/protocol/wayland.xml b/protocol/wayland.xml
index 275ea28..07fee80 100644
--- a/protocol/wayland.xml
+++ b/protocol/wayland.xml
@@ -678,7 +678,9 @@
 	time after the wl_surface.commit request. When the compositor will
 	not access the pixels anymore, it will send the wl_buffer.release
 	event. Only after receiving wl_buffer.release, the client may re-use
-	the wl_buffer.
+	the wl_buffer. A wl_buffer, that has been attached and then replaced
+	by another attach instead of committed, will not receive a release
+	event, and is not used by the compositor.
 
 	Destroying the wl_buffer after wl_buffer.release does not change the
 	surface contents, even if the wl_buffer is still pending for the
-- 
1.7.8.6