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Re: [Freetype] Why 26.6 ?

From: Giuliano Pochini
Subject: Re: [Freetype] Why 26.6 ?
Date: Tue, 17 Sep 2002 11:38:47 +0200 (CEST)

On 17-Sep-2002 Jacky, Lau wrote:
>> Pixels are 2D so it is 6+6=12 > 8, so it is "real" 256 levels antialiasing.
> 26.6 the .6 refers 2^6 = 64, isn't it??

Yes, 64*64=4096 subpixels per pixel.

btw gray_render_scanline() and friends use a much higher resolution to
calculate areas and pixel coverage (32.32 if I remember right). 26.6 is
used only for "hi-level" coordinate system.
I asked about 26.6 notation because 24.8 sounds more "natural" to me
and 2^24 is already big enough for any application I can imagine.


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