[Konsole-devel] [Bug 155174] Slow bitmap font renderig with nvidia driver

[Robert Knight]

https://bugs.kde.org/show_bug.cgi?id=155174





--- Comment #22 from Robert Knight <robertknight gmail com>  2010-02-07 14:16:47 ---
Hello George,

With regards to your recent blog post which has comments disabled -
http://blog.gwright.org.uk/articles/2010/02/07/why-i-wont-use-kde-4

You may wish to try running Konsole with "-graphicssystem raster" which
switches Qt to use its built-in software renderer for everything and which
currently offers much better performance that X11 in many cases (though this is
purely anecdotal, I don't know how well it stacks up across all the hardware
and X.org versions available).

The other thing is that for monospaced bitmap fonts, I'm sure it would be
possible to write a simple hack to render all the glyphs into a single pixmap
and then just blit the appropriate part of the pixmap onto the terminal widget
in the right place.  When it comes to rendering bitmap fonts consisting only of
ASCII characters (perhaps with some extensions) then Qt's font rendering will
no doubt go through many unnecessary hoops.  Something to consider if you ever
find yourself bored with an hour to spare.

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