On Monday 07 January 2013, Martin Gräßlin wrote: > > handing over the pixmap id intenrally to the shadow system is exactly what > > we do in plasma. granted, it is outside of kwin and we're doing this with > > an xatom ... but this is precisely how plasma is doing it now: we rely on > > kwin (or another window manager) to paint the shadows using pixmaps we hand > > over by id. > Yeah well, I don't want a roundtrip to X just to set an information which we > have internally already available. For KWin we need a better approach.
It actually adds 25 roundtrips per window, including 8 image transfers from the X server. Fredrik