Originally Posted by cyrion
Thank for the explanation, I'm moving to Qt forums.
The usual answer (official?) is, that you should use the RASTER engine,
and Nokia won't enhance the XRENDER engine, because XRender is slow anyway.
Truth is, XRender was horrible slow in the past when QT's XRender engine was written before hardware acceleraration was supported through EXA/UXA and/or NVidia's binary driver.
However, QT uses Xrender in some quite stupid ways - sometimes (like your A1 ussue) effectivly preventing proper hw accaleration.