[cairo] Text performance on windows?

Gerdus van Zyl gerdusvanzyl at gmail.com
Tue Aug 26 03:23:46 PDT 2008

Please see this discussing on the list:


The reason I saw slow rendering was with the way I did double
buffering and the type of surface I created. If you could show us your
text rendering code it would be informative.


On Tue, Aug 26, 2008 at 11:40 AM, Nicholas Allen <allen at ableton.com> wrote:
> Hash: SHA1
> I also experience serious performance problems with Cairo. I have only
> run on Windows but it's performance is so bad as to make it completely
> unusable for what we need. It's a shame because the API is really
> clean and the output looks great. Hopefully, this will get fixed in
> future releases...
> Nick
> Damian Frank wrote:
>> I'm pretty new to Cairo, and I've been looking at using it for a
>> codebase that currently uses, variously, Xlib, GDI, GDI+, and
>> Quartz, among others.  Performance is one of my chief concerns,
>> though.  At the moment I'm looking at text performance, and I have
>> some serious concerns.  For now, I am just benchmarking on Windows,
>>  and only for to-screen rendering (as opposed to printing or
>> PS/PDF/etc).
>> Can someone give me some pointers on staying on the fast code paths
>>  for text rendering on win32?  My tests so far show image and DDB
>> both taking about 15-20x as long as our GDI implementation, and
>> 24-bit DIB taking about 5x as long.
>> Thanks,
>> Damian
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