qt-everywhere-src-5.14.1/qtwayland/src/extensions/server-buffer-extension.xml

<protocol name="server_buffer_extension">

    <copyright>
 Copyright (C) 2015 The Qt Company Ltd.
 Contact: http://www.qt.io/licensing/

 This file is part of the plugins of the Qt Toolkit.

 $QT_BEGIN_LICENSE:BSD$
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    </copyright>

    <interface name="qt_server_buffer" version="1">
        <description summary="buffers managed by the compositor">
          Server buffer is an extension which makes it possible to share a
          buffer created by the compositor to share it with arbitrary
          clients. These types of buffers are intended to be read only
          buffers for clients, but this is an implementation detail.

          Server buffers main purpose is to help implement caches
        </description>
        <request name="release">
        </request>
    </interface>
</protocol>