QPainter (aka non-OpenGL) based canvas

[Cyrille Berger]

Hello,

I have commited two fixes today for the QPainter canvas. And now, we need to 
do testing on it. We have two kinds of tests to do :
 * performance on all sort of hardware
 * beauty , we need to ensure that for all level of zoom we use the best 
looking algorithm

There are some option in Krita2's settings, it's Boudewijn the expert on them, 
but there is one you should remove it's in the performance tab, 
uncheck "Update whole canvas". On a side note, those options won't be shipped 
with the final release, but the goal is to use the next alpha to collect some 
user input, especially on the performance, a slow QPainter canvas is a 
showstopper. But first we must check that it works for developers :)

-- 
Cyrille Berger