Re: [ft] Font rendering quality

[jason campbell]

Well there's something wrong with the POST table of the font, and the unicode values of many, if not most, characters are incorrect.

But the rendering behavior you're seeing is because of poor hints, in particular the hints for the curved vertical strokes, between 9-27. The gasp table does indeed call for grid fitting at those sizes, but the stem values fail, leaving them poorly rendered. You would get better results with the Freetype autohinter, I'm afraid.

 

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On Thu, Jul 18, 2013 at 8:43 AM, Tudor, Dacian <address@hidden> wrote:

Yes, using this font is mandatory. The font can be modified if we know what has to be changed. The font designer claims that there is nothing wrong with it…

 

 

From: address@hidden [mailto:address@hidden] On Behalf Of jason campbell
Sent: Donnerstag, 18. Juli 2013 14:37
To: Werner LEMBERG
Cc: Tudor, Dacian; address@hidden
Subject: Re: [ft] Font rendering quality

 

Do you have to use this font? As the output indicates, at the least there are all sorts of encoding issues in this font.

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Jason Campbell
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On Thu, Jul 18, 2013 at 8:20 AM, Werner LEMBERG <address@hidden> wrote:

> I checked the gasp table using Raph Levien's Gasp Tool. Perhaps
> there are better tools for it, maybe you can recommend a better one.

The log file you've sent shows only an error in the program without
any output.  What about using FreeType's `FT_Get_Gasp' function?

> I can try subpixel hinting as suggested.  Is it sufficient to use
> version 2.5.0 and with FT_CONFIG_OPTION_SUBPIXEL_RENDERING enabled?

You need FT_CONFIG_OPTION_SUBPIXEL_HINTING.  I suggest that you play
around with the `ftview' tool and look into its source code.


    Werner

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