[Kde-games-devel] Chess game for KDE4

[Stefan Majewsky]

Am Freitag, 4. Dezember 2009 13:13:30 schrieb Ian Wadham:
> Just to remind everybody ... there are three reasons to prefer KGameCanvas
> over QGV ... speed, speed and speed.  I do not know if QGV is yet fast
>  enough all the time to run KGoldrunner.  It always was fast enough most of
>  the time, but you cannot tolerate hiccups of a substantial fraction of a
>  second, while QGV decides to go off and do some housekeeping, if your game
>  is running to a 50 msec timescale.

I've never experienced such "hiccups" since Qt 4.5, and 4.6 is even better in 
this regard. Remember that QGV is the base for the Widgets-NG framework that 
people at Nokia are building. If my information is correct, the long-term plan 
is to replace the current widgets by something based on QGV.

> If KGCanvas were ever to depart, I might consider going to 2-D OpenGL.
> I found out when writing Kubrick that OpenGL is blisteringly fast compared
> to any offerings based on Qt (such as QGV and KGCanvas).  I think that is
> why OpenGL is behind Qt paint engine and composite graphics trickery in
> KDE 4 windows.

Huh? What do you mean? OpenGL is not the basis for Qt's painting on Windows. 
At least not by default: One can use the "-graphicssystem opengl" switch to 
enable OpenGL painting (on any platform, I think).

Greetings
Stefan
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