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++ This example shows how to use the low-level server buffer extension. This
++ version of Qt also provides a texture sharing extension that provides more
++ functionality and convenience for sharing graphical assets with Qt Quick
++ clients: see the texture-sharing example.
++
++ Compile up both compositor and client.
++
++ If you have the dmabuf-server buffer integration (and you are running Mesa)
++ then start the compositor with:
++
++ $ QT_WAYLAND_SERVER_BUFFER_INTEGRATION=dmabuf-server ./compositor
++
++
++ Note: if you are running a compositor on an X11 desktop, you also need to
++ set QT_XCB_GL_INTEGRATION=xcb_egl as usual.
++
++ The compositor broadcasts the name of the server buffer integration to
++ all clients through the hardware integration extension. Therefore,
++ all you need to do is to start the client with
++
++ $ ./server-buffer-cpp-client -platform wayland
++
++ The client will show all the buffers shared by the compositor.
++
++ For testing on desktop, there is also a shared memory based server buffer
++ integration that works with any graphics hardware:
++
++ $ QT_WAYLAND_SERVER_BUFFER_INTEGRATION=shm-emulation-server QT_XCB_GL_INTEGRATION=xcb_egl ./compositor
++
++ Note: the shm-emulation-server integration does not actually share graphics
++ buffers, so it will not give any graphics memory savings. It is intended solely
++ for testing during development and should never be used in production.