Alan W. Irwin wrote:
> Hi Hazen:
> 
> I have been testing the efficiency of text clipping for the cairo devices
> for a reasonably modern libcairo (version 1.6.4) and relatively modest
> 2.4GHz PC, and unlike older libcairo versions it is looking good.
> 
> Here is one example:
> 
> softw...@raven> time c/x09c -dev pngcairo -drvopt text_clipping=0 -fam
> -fflen 2 -o cairotest%n.png
> 
> real    0m0.391s
> user    0m0.360s
> sys     0m0.008s
> softw...@raven> time c/x09c -dev pngcairo -drvopt text_clipping=1 -fam
> -fflen 2 -o cairotest%n.png
> 
> real    0m0.485s
> user    0m0.468s
> sys     0m0.012s
> 
> There is a relatively large amount of text in that example (the contour
> labels), and also quite a bit of graphics.  In fact it is that example that
> shows (on the first page) what happens if you don't have text clipped
> properly.  But the total difference in elapsed time is trivial, just 0.094
> seconds.

Sounds okay to me. I'm a little worried that many people will have older 
versions of the library, but perhaps we can have, or at least recommend 
a minimum libcairo version during the build process?

-Hazen


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