The option to toggle hinting (switching it on an off) is just pressing "h"
(lowercase "h"). "H" uppercase cycles through the hinting engines, which are
v35/v40 [my own freetype installation has an additional v38]. pressing "f"
(lowercase "f") toggle auto-hinting - I think that means ignore the font's own
hinting instructions and use freetype's own.
I think you'll find that the drop-out is gone if you either switch off hinting
(pressing "h"), or switch to auto-hinting (pressing "f") in ftview. the display
on the side should simultaneously change to "hinting: off" , or at the top from
"v40" to "auto".
For this sort of problems ("drop out"), you might find that using "v35" and/or
also mono rendering (press "A") works better on ftview.
The auto-hinting "f" key toggle is equivalent to FT_LOAD_FORCE_AUTOHINT , which
might be a better option to use than FT_LOAD_TARGET_LIGHT , in some situation.
I checked your screen shots again, it says v40/normal at the top, and the two
screenshot differs by ppem 13 vs ppem 14. In current freetype, if you set
FT_LOAD_TARGET_LIGHT, it automatically sets FT_LOAD_FORCE_AUTOHINT, which is
probably the actual solution/work-around to your problem ("buggy hinting
instructions in fonts"), rather than FT_LOAD_TARGET_LIGHT in itself.
If you are going to get a lot of fonts from this font vendor,
FT_LOAD_FORCE_AUTOHINT (ignore the font's hinting instructions and doing
freetype's own) might be a better choice than either FT_LOAD_TARGET_LIGHT
(setting lighter hinting, also have the side-effect of setting
FT_LOAD_FORCE_AUTOHINT) or FT_LOAD_NO_HINTING (don't do any hinting of any
sort).
On Thursday 19 December 2024 at 17:02:32 GMT, Simon Tremblay
<[email protected]> wrote:
#yiv8902949204 filtered {}#yiv8902949204 filtered {}#yiv8902949204 filtered
{}#yiv8902949204 filtered {}#yiv8902949204 filtered {}#yiv8902949204
p.yiv8902949204MsoNormal, #yiv8902949204 li.yiv8902949204MsoNormal,
#yiv8902949204 div.yiv8902949204MsoNormal
{margin:0in;font-size:12.0pt;font-family:sans-serif;}#yiv8902949204 a:link,
#yiv8902949204 span.yiv8902949204MsoHyperlink
{color:blue;text-decoration:underline;}#yiv8902949204 p.yiv8902949204msonormal,
#yiv8902949204 li.yiv8902949204msonormal, #yiv8902949204
div.yiv8902949204msonormal
{margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:sans-serif;}#yiv8902949204
span.yiv8902949204EmailStyle25
{font-family:sans-serif;color:windowtext;}#yiv8902949204
.yiv8902949204MsoChpDefault {font-size:10.0pt;}#yiv8902949204 filtered
{}#yiv8902949204 div.yiv8902949204WordSection1 {}#yiv8902949204 filtered
{}#yiv8902949204 filtered {}#yiv8902949204 filtered {}#yiv8902949204 filtered
{}#yiv8902949204 filtered {}#yiv8902949204 filtered {}#yiv8902949204 filtered
{}#yiv8902949204 filtered {}#yiv8902949204 filtered {}#yiv8902949204 filtered
{}#yiv8902949204 filtered {}#yiv8902949204 ol
{margin-bottom:0in;}#yiv8902949204 ul {margin-bottom:0in;}
Hi,
Thank you for getting back to me! I will reach to the customer.
Simon
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Simon
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TREMBLAY
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Architecte logiciel
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Scrum Master and Software Architect
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InnovMetric
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T:
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418‑688‑2061
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From: Hin-Tak Leung <[email protected]>
Sent: Wednesday, December 18, 2024 9:17 PM
To: [email protected]; Simon Tremblay <[email protected]>
Subject: Re: Potential Bug with BIZ UDGothic Font
| |
Vous n’obtenez pas souvent d’e-mail à partir
[email protected] c’est important
| |
That would not be a bug in FreeType, but a bug in the Font. You need to report
it to where you got the font from . From the look of it, that would be the
hinting instruction and/or drop-out control in the font. FreeType is showing
the font as its hinting instructions tell FreeType to. The difference between
LIGHT and NORMAL is that some hinting instructions (in the font) are processed
differently in the two modes. Again, this is a problem with the hinting
instructions within the font, and you should report it as such.
You'll find that if you switch off hinting (one of the options in ftview) , the
problem is gone. This, shows that the bug is in the font, and specifically in
its hinting instructions.
On Wednesday 18 December 2024 at 21:07:15 GMT, Simon Tremblay
<[email protected]> wrote:
Hi,
I believe there is a bug with the BIZ UDGothic font, specifically with the '–'
character when using a small font size.
The issue was found in version 2.13.3.
I managed to work around the issue by using FT_LOAD_TARGET_LIGHT instead of the
default parameters.
Additionally, I was able to reproduce the problem in ftview.exe.
No bug
With the bug:
Best regards,
Simon
If necessary, to install the font on windows:
Here are the steps to install the fonts associated with the Japanese language
without adding the Japanese language itself to your language preferences:
- Click the Start button.
- In Settings, click System.
- Click Apps & features.
- Click on the link, Manage optional features.
- If "Japanese Supplemental Fonts" is not listed among the installed
features, click on the "+" icon next to Add a feature.
- Scroll to find "Japanese Supplemental Fonts". Click on that item, then
click on Install.
- Click on the back arrow in the upper corner of the window.
