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Re: anyone notice speed of 2.17.95 on Windows ?
From: |
David Kastrup |
Subject: |
Re: anyone notice speed of 2.17.95 on Windows ? |
Date: |
Thu, 12 Dec 2013 09:43:21 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
Werner LEMBERG <address@hidden> writes:
>>> One extra lookup per glyph might be enough to explain the difference.
>>> We need to look up the glyph to get a skyline, but maybe could cache
>>> its index into the font in the stencil.
>>
>> That does not sound very useful since we still would do the lookup
>> once per stencil rather than once per m and once per f.
>>
>> It _is_ annoying that this job is not done efficiently by the
>> Freetype library.
>
> I don't follow. What exactly is annoying? Please explain.
Caching of frequently accessed information if that information is
expensive to access.
>> Is it possible that the Freetype library on Windows imprudently
>> accesses (and possibly creates on the fly) some Truetype versions or
>> conversions of the fonts for getting the outlines?
>
> Nope. FreeType uses exactly the same code on both platforms,
Unlikely as it is talking to different font servers and systems.
> and it never converts fonts on the fly.
But its request to the respective font subsystem might still result in
stuff getting resolved via the Truetype path.
>> That might also explain
>> <URL:http://code.google.com/p/lilypond/issues/detail?id=2657>, the
>> still unresolved Issue 2657: font kerning on Windows is broken
>
> Certainly not. This is not a FreeType problem, since kerning and the
> like is handled one level above FreeType.
Well, if Freetype talks to different levels above, it might have
misunderstandings with the upper level on Windows.
--
David Kastrup
- Re: anyone notice speed of 2.17.95 on Windows ?, (continued)
- Re: anyone notice speed of 2.17.95 on Windows ?, David Kastrup, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Mike Solomon, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Werner LEMBERG, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Phil Holmes, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, David Kastrup, 2013/12/10
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/11
- Re: anyone notice speed of 2.17.95 on Windows ?, David Kastrup, 2013/12/11
- Re: anyone notice speed of 2.17.95 on Windows ?, Werner LEMBERG, 2013/12/12
- Re: anyone notice speed of 2.17.95 on Windows ?,
David Kastrup <=
- Re: anyone notice speed of 2.17.95 on Windows ?, Mike Solomon, 2013/12/12
- Re: anyone notice speed of 2.17.95 on Windows ?, Werner LEMBERG, 2013/12/12
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/13
- Re: anyone notice speed of 2.17.95 on Windows ?, Mike Solomon, 2013/12/13
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/14
- Re: anyone notice speed of 2.17.95 on Windows ?, David Kastrup, 2013/12/14
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/14
- Re: anyone notice speed of 2.17.95 on Windows ?, David Kastrup, 2013/12/14
- Re: anyone notice speed of 2.17.95 on Windows ?, Mike Solomon, 2013/12/14
- Re: anyone notice speed of 2.17.95 on Windows ?, Keith OHara, 2013/12/14