[ft-devel] [PATCH 0/2] Improve embolden function.

[Byeongsik Jeon]

Hi.

Sorry. missed the attachments.

[PATCH 1/2] Improve FT_Outline_Embolden for the unintended arfifacts problem 
(#45597):

- The mathematical background is clearly added to the patch.
- Some error situation processing is done naturally during the formula 
processing.
- At the bauhaus_256px_win7_ie9.png file, you can see that Microsoft's embolden 
did not properly inhibits the unintended artifacts. This patch will handled 
properly.
- Because the strength value also affects the unintended artifacts creation, the 
strength formula of [PATCH 2/2] should also be used.


[PATCH 2/2] Improve FT_GlyphSlot_Embolden to match more with Microsoft Windows 
looks:

- The DirectWrite font rendering appears to have deleted the strange 
transformation from the existing GDI. For reference, the GDI matching code has 
not been deleted.
- "Advance" values are important to match text layouts.
- The strength value must be an integer pixel value to inhibits blurring the 
hinted outline.

More details are commented on the patch.

Thanks.

---
 src/base/ftoutln.c | 172 +++++++++++++++++++++++++++++++++++++++++++++
 src/base/ftsynth.c |  92 ++++++++++++++++++------
 2 files changed, 242 insertions(+), 22 deletions(-)

--
2.19.0

bauhaus_256px_gedit_current.png
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bauhaus_256px_gedit_patched.png
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bauhaus_256px_win7_ie9.png
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lucon_12px_16px_win7_ie9.png
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lucon_12px_gedit_bold_current.png
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lucon_12px_gedit_bold_patched.png
Description: PNG image

lucon_12px_gedit_regular.png
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lucon_16px_gedit_bold_current.png
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lucon_16px_gedit_bold_patched.png
Description: PNG image

lucon_16px_gedit_regular.png
Description: PNG image