[RFC][PATCH] dix: Skip PropertyNotify events if the property value didn't change

[Peter Harris]

On 2010-09-20 11:35, ville.syrjala at nokia.com wrote:
> I'm not sure if this kind of optimization is always legal or if some
> specification says that the event must be sent even if the value doesn't
> change. Hence the RFC.

Unfortunately, the spec explicitly says that PropertyNotify is sent
"...even when adding zero-length data using ChangeProperty and when
replacing all or part of a property with identical data..."

http://cgit.freedesktop.org/xorg/proto/xproto/tree/specs/sect1-9.xml#n14373

Peter Harris
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