Gtk+ has GNOME on the one hand, and Xfce on the other. Qt, on the other hand, only has KDE - there's no lightweight, less encompassing alternative if KDE doesn't float your boat, but you'd still want a Qt desktop. Luckily for you, there's now Razor-qt, a small, lightweight and simple Qt desktop environment.
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Member since:2010-03-08
Including when tapping into Qt's new animation capabilities ?
I know that the QML demos of Qt 4.7 are somewhat sluggish on the Fedora 15 install of my laptop, which offers a typical example of imperfect GPU support (Dual-GPU setup in which the Intel chip works reasonably well and the NVidia chip doesn't).
My problem with that is that as outdated as pre-Sandy Bridge Intel GPUs may be, I believe they still vastly outperform Mesa OpenGL emulation on CPUs for the same period. If you know of a simple way to temporarily disable GPU acceleration on Linux, I can experimentally test this belief.
So, unless Qt 5 has vastly improved rendering performance over Qt 4, what will happen when developers will start to put pretty animated transitions everywhere in their software, as is somewhat encouraged by the QML part of the Qt SDK ?
Member since:2008-12-26
Animated transitions are not the problem, they execute well in 2D.
Shader effect programs are prone to be problematic, and probably shouldn't be used without real hw acceleration. Luckily you can avoid using them - QML doesn't force you to add everything in your UI, even if it makes it straightforward (provided that you know how to write gl shader programs, of course).
Member since:
2008-12-26
I have seen Qt5 run on top of Mesa software rendering, and the performance is great.