Re: Glyph Bitmap Caching in FreeType

[Stefan Seefeld]

I don't think that mandatory caching inside FT is a good thing.
Different renderers have different pixmap formats or even vector
drawing formats (openGL display lists) so I'd prefer to do the
caching there. Each glyph is then produced once and only if the
renderer glyph lookup didn't find a glyph (whether individual
character or whole string) the freetype engine needs to be consulted.
Of course, 'equality' as used in the lookup can involve other
information as for example pixel relative position, since it
might require a glyph to be rasterized differently (hinting)
if the pixel relative position is not exactly the same or it
is rotated, or...

Regards,        Stefan
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Stefan Seefeld
Departement de Physique
Universite de Montreal
email: address@hidden

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      ...ich hab' noch einen Koffer in Berlin...