Em Quinta-feira 13. Maio 2010, às 12.56.45, Clemens Eisserer escreveu:
> Hi Thiago,
> >> Are there plans to improve the X11 backend?
> > No. Qt's raster engine is usually faster than XRender.
> No not again the usual finger pointing so common in open-source projects.
> QT's raster engine is usually faster than QT's X11 backend, yes, but
> at least to some extent this is because the x11 backend is in a really
> bad shape.
So why are you asking us to use lower-quality rendering code?
Whenever XRender is slower than what Qt can do, we'll take Qt codepaths.
Anyway, the future is OpenGL and OpenGL ES.
> Its pretty sad to see what KDE/QT do to highly optimized 2D
> drivers, all the required groundwork is already there - its just the
> upper layer messing it up.
> Yes, raster engines are good at specific things (like many small
> operations), but terrible slow at others. And once you use a raster
> engine, you loose all your abilities to accelerate certain operations
> which can really benefit (like large blits, scaling, blending).
> Of course if you use client-gradients in your themes everywhere
> (oxygen), no wonder the X11 backend does bad.
That you have to take up with the oxygen developers.
And, like I said, the current work is being done to improve the OpenGL
graphics system, because that's the one where we can gain the most from good
hardware and good drivers.
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
Senior Product Manager - Nokia, Qt Development Frameworks
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