[squeak-dev] Re: [Ann] Enhanced StrikeFonts (antiAliasing, subPixel AA)

Bert Freudenberg bert at freudenbergs.de
Wed Aug 5 16:39:29 UTC 2009


On 05.08.2009, at 18:17, Juan Vuletich wrote:

> Bert Freudenberg wrote:
>> Juan,
>>
>> the new StrikeFonts look nicely crisp, but the letter spacing seems  
>> to be off. Compare this new to old rendering:
>>
>> (image snipped)
>>
>>
>>
>> Can this be made more homogenous? The space after the "r" seems to  
>> be too large, and the sequence "lit" looks very uneven compared to  
>> the right, older shot.
>>
>
> I created the fonts automatically, from a sample rendered with  
> FreeType, using area each glyph uses. In this case, the $r has a  
> very light blue pixel at the topRight. I can modify the script to  
> ignore pixels that are too light when setting the bounds for the  
> glyph, but I can not guarantee perfect results unless glyphs are  
> tweaked by hand.

Yes, under magnification I see thew problem ... oh well :)

>> Secondly, can the sub-pixel AA be disabled on the fly? It leads to  
>> visible color fringes when the subpixel layout does not match your  
>> AA.
>>
>
> Sure. See Preference #subPixelRenderFonts.


Hmm, this does not show up in the Preferences panel ... also, when I  
disable that, all pixels become full black, so this is unusable.

- Bert -





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