Re: No ftcache in freetype?

Owain Ainsworth wrote:
> Hi Matthieu,
> 
> On Fri, Jul 13, 2007 at 10:20:00AM +0200, Matthieu Herrb wrote:
>> Which OpenBSD version are you using ? it that 4.1 (with X.Org 6.9 and
>> thus Freetype 2.1) or -current (with X.Org 7.2 and freetype 2.2.1)?
> 
> I'm running -current from about two weeks ago. So the latter. The
> codebase I checked for this problem was xenocara.
> 
>> On those 2 versions the official freetype build system don't seem to
>> build this directory either. So I'm not sure if it's some "experimental"
>> feature not yet enabled or an obsolete one, supposed to be removed.
>> If someone has some information, I'd like to hear about it.
> 
> Doing a bit more research on this issue. The freetype2 website
> (http://www.freetype.org/freetype2/index.html#features) states:
> 
> -FreeType 2 provides its own caching subsystem since release 2.0.1. It
> can be used to cache either face instances or glyph images efficiently.
> 
> making me believe it is Newer. IIRC i think i remember seeing somewhere
> that the API is somewhat unstable, but the performance is fine.
> Unfortunately I don't remember where I read this.
> 
> The README file for freetype (both the VTK one, 2.1.9 and the xenocara
> one) states:     
> -- auxiliary modules (optional)
> 
>       src/autofit/autofit.c   -- auto hinting module
>       src/cache/ftcache.c     -- cache sub-system (in beta)
>       src/gzip/ftgzip.c       -- support for compressed fonts (.gz)
>       src/lzw/ftlzw.c         -- support for compressed fonts (.Z)
>       src/gxvalid/gxvalid.c   -- TrueTypeGX/AAT table validation
>       src/otvalid/otvalid.c   -- OpenType table validation
>       src/psaux/psaux.c       -- PostScript Type 1 parsing
>       src/pshinter/pshinter.c -- PS hinting module
>       src/psnames/psnames.c   -- PostScript glyph names support
> 
> 
> Also looking at the README.VTK.txt in the vtk distibution for freetype,
> the introductory blurb states:
> 
>   This directory contains a subset of the Freetype library (2.1.9) + some
>   recent
>   updates made to the cache subsystem.
> 
>   We only include enough of the distribution to provide the
>   functionalities
>   required by VTK.
> 
>   We would like to thank the Freetype team for distributing this library.
>   http://www.freetype.org
> 
> Which confirms my thought that the cache subsystem is required.
> 
> I have come to the conclusion that the confusion from the matter arises
> that freetype installed the ftcache.h header automatically, even when
> ftcache.c is _not_ built.

Thanks for taking the time to investigate this issue and for this 
information.

> 
> I'm away this weekend, i'll do some testing with the cache subsystem
> enabled in freetype sometime next week. I'll report back on stability.
> 
> If it turns out that it can't be enabled i'll have to make my port use
> the built-in that comes with VTK and just get used to the linker 
> problems (apart from that it works perfectly).
> 
> News, and either way the port should be forthcoming next week.

Ok. Looking forward for your input/

-- 
Matthieu Herrb