Re: anyone notice speed of 2.17.95 on Windows ?

[David Kastrup]

Werner LEMBERG <address@hidden> writes:

>> Open_type_font:: and Pango_font::name_to_index() each call
>> FT_Get_Name_Index().  Inserting print statements to trace those calls
>> I find that FT_Get_Name_Index is called:
>> 7 times for each character in a Tempo
>> 5 times for each character in a Text Script
>> ...
>> 1 time for each notehead
>> 5 times for each rest
>
> Ouch.  `FT_Get_Name_Index' is quite a slow function, indeed, so
> caching its results would speed up things a lot.
>
> Note that speeding up the function itself was never on my radar – in
> all the years I'm working on FreeTpye there was not a single request
> to do so, IIRC.  Modern fonts use the SFNT container format, centered
> around glyph indices, not glyph names.  In other words, looking up
> glyph indices from glyph names is not a central function in most
> cases.
>
> I will check whether I can improve that in FreeType.

Is there a reason this would have such a significantly different impact
in Windows?

-- 
David Kastrup