The FreeType Project - Bugs: bug #46551, Severe colorful subpixel artifacts
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bug #46551: Severe colorful subpixel artifacts
Submitter: | Alexei Podtelezhnikov <podtelez> | ||
Submitted: | Fri 27 Nov 2015 02:56:14 AM UTC | ||
Severity: | 3 - Normal | Item Group: | None |
Status: | Fixed | Privacy: | Public |
Assigned to: | None | Open/Closed: | Closed |
Planned Release: | None |
Mon 30 Nov 2015 02:46:04 PM UTC, comment #3: |
Alexei Podtelezhnikov <podtelez> |
Mon 30 Nov 2015 04:26:06 AM UTC, comment #2: I think I am onto something. I've managed to segfault ftview just by switching to cyan-on-cyan rendering. I know it is silly as you won't be able to see anything, but I was not expecting to see Segmentation Fault. I cannot find the dumped core file and I do not know how to debug those either. Can you help? These are the steps to reproduce:
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Alexei Podtelezhnikov <podtelez> |
Fri 27 Nov 2015 05:27:26 AM UTC, comment #1: Some time ago I have noticed an effect similar to this, which comes up from time to time, but i was never able to nail it down so that I could find out what's going on...
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Werner LEMBERG <wl> |
Fri 27 Nov 2015 02:56:14 AM UTC, original submission:
I see severe artifacts when testing sub-pixel color blending using freetype2 tools like ftstring. I was able to reproduce it in ftview (modified to use cyan-on-red). It shows up occasionally. In the attached images you will see severe color fringes in just a few glyphs. Interestingly it is not always the same glyphs: other glyphs are affected at different sizes.
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Alexei Podtelezhnikov <podtelez> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 4 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2015-11-30 | podtelez | Status | None | Fixed | |
Open/Closed | Open | Closed | |||
2015-11-27 | podtelez | Attached File | - | Added BlueFringe.png, #35573 | |
2015-11-27 | podtelez | Attached File | - | Added YellowFringe.png, #35572 |
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Corresponding source code
Fixed in git.