bugThe FreeType Project - Bugs: bug #43234, bold Luxi Sans rendered incorrectly


bug #43234: bold Luxi Sans rendered incorrectly

Submitted by:  Tomáš Bžatek <tbzatek>
Submitted on:  Tue 16 Sep 2014 03:32:36 PM UTC  
Severity:  3 - Normal Item Group:  Incorrect behaviour
Status:  Invalid Privacy:  Public
Assigned to:  Werner LEMBERG <wl> Open/Closed:  Open
Planned Release:  None

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Tue 23 Sep 2014 07:32:53 AM UTC, comment #1: 

I've just got an image showing a rendering with the current MS rasterizer, and it looks exactly the same as with FreeType.

For this reason, I mark it as invalid but leaving it open, since it needs more investigation why the font is no longer rendered OK, even with the MS rasterizer.

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Tue 16 Sep 2014 03:32:36 PM UTC, original submission:  

There's been a regression between 2.4.9 and 2.4.10 releases in rendering bold variant of the Luxi Sans font. It's only the bold variant that is affected. Please see the attached images to see the difference. The new (considered buggy) rendering makes the font difficult to read and is not so crisp compared to the old rendering.

The font can be downloaded e.g. on http://www.fontsquirrel.com/fonts/Luxi-Sans

Bisecting the change pointed to the following commit that affected the rendering:

2012-03-10 Werner Lemberg <wl@gnu.org>

 [truetype] Fix SSW instruction.

  • src/truetype/ttinterp.c (DO_SSW): SSW does use font units. For verification, it took some time to find a font which actually uses this instruction.


Tomáš Bžatek <tbzatek>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #32172:  LuxiSans12ptWindows.png added by wl (3KiB - image/png)
file #32111:  pre-2.4.10.png added by tbzatek (72KiB - image/png)
file #32112:  post-2.4.10.png added by tbzatek (72KiB - image/png)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by wl (Updated the item)
  • -email is unavailable- added by tbzatek (Submitted the item)

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2014-09-23 wl Attached File- => Added LuxiSans12ptWindows.png, #32172
        StatusNone => Invalid
        Assigned toNone => wl
    2014-09-16 tbzatek Attached File- => Added pre-2.4.10.png, #32111
        Attached File- => Added post-2.4.10.png, #32112

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