[cairo] Fast text rendering

[Bill Spitzak]

No matter what, you need to arrange your program so you don't *have* to 
draw 30 different letters every second. It should instead do a "what 
letter is it at now, if different than before draw it" method.

michael at cubic.org wrote:
> Hi.
> 
> What's the right way in cairo for fast rendering of text.
> 
> E.g. I have a table of 20 by 20 elements and the text of each element can
> change about 30 times per second.
> Most of the text is simple and of the same font and the same size.
> 
> I try the xgl frontend.
> 
> Kind regards,
> Michael
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