[cairo] performance tuning questions

[Dov Grobgeld]

Though I know almost nothing of the cairo inwards I suggest that you
investigate the following.

   - Try using the Anti-Grain Graphics (agg) library instead. When I
   benchmarked the two a few years back, agg was substantially faster. Although
   I find the agg API much more awkward to use, in terms of functionality and
   visual results the two appear equivalent for vector graphics. (For text I
   still used pangocairo even when using agg though.)
   - Try using one of the OpenGL backends for cairo.

Regards,
Dov


On Thu, Jan 20, 2011 at 06:01, cs <changosurf at gmail.com> wrote:

> Hello,
>
> Im new here, and **relatively** new to cairo programming.
>
> I have some questions about performance tuning.
>
>
>
> I have an application where speed/performance are a very high priority.
>
> This application only uses a few basic drawing/filling routines (no arcs,
> curves, image overlays, etc.), and png is the only output format that we
> require.
>
> Up until now, we’ve been using GD, and have recently converted over to
> cairo.
>
> Although the quality has greatly improved (thanks mostly to cairo’s
> anti-aliasing), we’ve noticed a significant performance hit (graphics
> processing time has increased noticeably).
>
> We’ve been using the ‘stock’ cairo libs shipped with our linux distro
> (fedora), and now we’re considering building cairo from scratch & removing
> as many extra features as possible.
>
>
>
> Assuming that we successfully achieve creating a minimal cairo build,
> should we see an improvement in performance?
>
> Are there any other steps that can be taken in order to improve cairo’s
> performance?
>
> Any help/feedback woul be greatly appreciated…
>
>
>
> Thanks,
>
> cs
>
> --
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> cairo at cairographics.org
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>
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