[Bug 29240] Anti-aliasing not working for all fonts

http://bugs.winehq.org/show_bug.cgi?id=29240

--- Comment #4 from Huw Davies  2012-01-16 06:48:06 CST ---
(In reply to comment #3)
> The antiliasing does not start at the same size for all the fonts:
>   . Font 'DejaVu Sans' : antialised for all font sizes. 
>   . Font 'Consolas' : antialised for all font sizes. 
>   . Font 'Arial' : antialised for font sizes bigger than 13.
>   . Font 'Tahoma' : antialised for font sizes bigger than 11.
>   . Font 'Verdana' : antialised for font sizes bigger than 11.
>   . Font 'Times New Roman' : antialised for font sizes bigger than 13.
>
> A quick test shows that in font.c, after the call of get_gasp_flags( hdc,
> &gasp_flags ):
>   . When the antialiasing is not done: GGO_BITMAP, gasp_flags=0x0001
>   . When the antialiasing is done: GGO_GRAY4_BITMAP, gasp_flags=0x0003 or
> 0x0007.
> Antialiasing seems to depend on the font data retrieved by GetFontData.

Yes, this is correct.  The gasp table in the ttf recommends minimum sizes below
which we should not antialias.