[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Freetype] weird glyph width/heights
From: |
Brian Stell |
Subject: |
Re: [Freetype] weird glyph width/heights |
Date: |
Thu, 02 May 2002 09:45:07 -0700 |
HaB JacKaL wrote:
> ...
> As an aside...I keep seeing references in the API docs and tutorials to
> "26.6 format pixels". Uhh...whazzat?
It is a way to use allow an "integer" to have a fractional part.
It gives the effect of a floating point number but on some
systems is much faster.
For 26.6: of the 32 bits, bits 0-5 are the fraction and 6-31 are the
integer.
> Can they be converted to screen pixels?
Just shift right 6 bits to get the integer.
Same basic idea for 16.16 but of course there are 16 bits of
fraction.
Brian Stell