The FreeType Project - Bugs: bug #23310, Incorrect image of one letter with...
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bug #23310: Incorrect image of one letter with TT_CONFIG_OPTION_BYTECODE_INTERPRETER
Submitter: | Alexander Morozov <amorozov> | ||
Submitted: | Wed 21 May 2008 09:39:11 AM UTC | ||
Severity: | 3 - Normal | Item Group: | Incorrect behaviour |
Status: | Fixed | Privacy: | Public |
Assigned to: | freetype | Open/Closed: | Closed |
Planned Release: | 2.3.7 |
Jump to the original submission
Sun 22 Jun 2008 02:07:33 PM UTC, comment #10: |
Werner LEMBERG <wl> |
Mon 09 Jun 2008 01:01:38 PM UTC, comment #9: Thanks a lot! This image is really helpful. |
Werner LEMBERG <wl> |
Mon 09 Jun 2008 10:12:02 AM UTC, comment #8: '0' is in the left column |
Alexander Morozov <amorozov> |
Sun 08 Jun 2008 09:50:01 AM UTC, comment #7: Could you please create an image similar to short_i_2.PNG using the attached font (displaying five variants of the short_i, and which are defined as glyphs for the digits 0, 1, 2, 4, and 5)?
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Werner LEMBERG <wl> |
Mon 26 May 2008 09:48:06 PM UTC, comment #6: It seems that this is a rasterizer problem: At least a FontForge debugging session shows that the drop-out mode 4 (as specified for this glyph) isn't obeyed, causing stubs and incorrectly set pixels for 11 and 13 ppem.
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Werner LEMBERG <wl> |
Mon 26 May 2008 10:33:09 AM UTC, comment #5: I use just this version of the font. |
Alexander Morozov <amorozov> |
Mon 26 May 2008 10:03:34 AM UTC, comment #4: I feared something like this. :-(
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Werner LEMBERG <wl> |
Mon 26 May 2008 08:58:36 AM UTC, comment #3: Thank you. Now U+0439 looks better. But I do not see any features in the upper right of this symbol on Windows. |
Alexander Morozov <amorozov> |
Sun 25 May 2008 01:01:38 PM UTC, comment #2: This is fixed in the current CVS, please test. Note that the distortions of the base glyph of U+0439 in the upper right at 11 and 13ppem are caused by explicit delta instructions. Could you check on Windows whether the hinting results are the same? |
Werner LEMBERG <wl> |
Thu 22 May 2008 06:26:49 AM UTC, comment #1: Thanks for the demo program, but the problem is reproducable with ftview (even from the CVS) directly by saying
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Werner LEMBERG <wl> |
Wed 21 May 2008 09:39:11 AM UTC, original submission:
There is a problem with cyrillic small letter short i (U+0439) from micross.ttf (font from Windows XP) if freetype is built with CFLAGS=-DTT_CONFIG_OPTION_BYTECODE_INTERPRETER. The bug can be seen with FT_Set_Pixel_Sizes(face, 0, 13) (only with 13, not 12 or 14).
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Alexander Morozov <amorozov> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 24 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2008-06-22 | wl | Status | Confirmed | Fixed | |
Open/Closed | Open | Closed | |||
Planned Release | None | 2.3.7 | |||
2008-06-09 | wl | Status | Need Info | Confirmed | |
2008-06-09 | amorozov | Attached File | - | Added 01245_winxp.png, #15820 | |
2008-06-08 | wl | Attached File | - | Added micross-cyrillic-i.ttf, #15814 | |
Status | Confirmed | Need Info | |||
2008-05-26 | wl | Status | Need Info | Confirmed | |
Assigned to | wl | freetype | |||
Open/Closed | Closed | Open | |||
Planned Release | 2.3.6 | None | |||
2008-05-26 | wl | Severity | 4 - Important | 3 - Normal | |
Status | Fixed | Need Info | |||
2008-05-26 | amorozov | Attached File | - | Added short_i_2.PNG, #15734 | |
2008-05-25 | wl | Status | Confirmed | Fixed | |
Assigned to | freetype | wl | |||
Open/Closed | Open | Closed | |||
Planned Release | None | 2.3.6 | |||
2008-05-22 | wl | Severity | 3 - Normal | 4 - Important | |
Item Group | None | Incorrect behaviour | |||
Status | None | Confirmed | |||
Assigned to | None | freetype | |||
2008-05-21 | amorozov | Attached File | - | Added micross_bug.png, #15689 | |
Attached File | - | Added mytest.c, #15690 |
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Corresponding source code
Fixed in the CVS. Please test.