| Summary: | Subtle glyph misalignment with several fonts | ||
|---|---|---|---|
| Product: | LibreOffice | Reporter: | خالد حسني <khaled> |
| Component: | graphics stack | Assignee: | خالد حسني <khaled> |
| Status: | VERIFIED FIXED | ||
| Severity: | normal | CC: | aron.budea, stephane.guillou, telesto |
| Priority: | medium | Keywords: | bibisected, bisected |
| Version: | 7.3.0.0 alpha0+ | ||
| Hardware: | All | ||
| OS: | All | ||
| See Also: |
https://bugs.documentfoundation.org/show_bug.cgi?id=152422 https://bugs.documentfoundation.org/show_bug.cgi?id=130010 https://bugs.documentfoundation.org/show_bug.cgi?id=99584 https://bugs.documentfoundation.org/show_bug.cgi?id=160786 https://bugs.documentfoundation.org/show_bug.cgi?id=160921 |
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| Whiteboard: | target:24.2.0 | ||
| Crash report or crash signature: | Regression By: | ||
| Bug Depends on: | |||
| Bug Blocks: | 71732 | ||
| Attachments: |
Document using Duployan
Test document (with embedded fonts) screenshot of first paragraph at different zoom levels in LO 7.5.4 |
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Description
خالد حسني
2023-07-11 09:55:56 UTC
Created attachment 188309 [details] Document using Duployan This uses https://github.com/dscorbett/duployan-test/blob/gh-pages/assets/fonts/Duployan-Regular.otf Even in highdpi displays, the glyphs are not attached together correctly. Created attachment 188311 [details]
Test document (with embedded fonts)
Here is a test document with a texts in three different fonts (fonts are embedded in the document).
Zooming in and out can show subtle glyph alignment issues.
Created attachment 188315 [details]
screenshot of first paragraph at different zoom levels in LO 7.5.4
Khaled, is this part of the issue you are describing?
(In reply to Stéphane Guillou (stragu) from comment #3) > Created attachment 188315 [details] > screenshot of first paragraph at different zoom levels in LO 7.5.4 > > Khaled, is this part of the issue you are describing? Yes. You can see more examples in the Arabic text as well if you look closely (I should take some screenshots). Looking at the first Duployan paragraph, glyphs were all over the place before 7.3. Since Julien's update to harfbuzz 2.8.2 in ed29da546754d0d11aa0cffd4dfe649cc95df722, situation improved but the reported subtle misalignment remained. Bibisected with linux-64-7.3 repo, but not marking as a regression. Yes, I don’t think there is a regression here. In 7.4x the on screen rendering has improved greatly. This issue is tracking the last bits of these positioning issues. I’m working on a patch already: https://gerrit.libreoffice.org/c/core/+/154292 Khaled Hosny committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/4b743de97fc133623e46827869c4ea3eb845ad47 tdf#156234: Don’t round glyph coordinates when doing subpixel positioning It will be available in 24.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback. I still see very subtle misalignments but it is greatly improved compared to 7.5.5 and barely noticeable. Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 24d0a62bd75b9a895c419aa165da648ab18f134d CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3 Locale: en-AU (en_AU.UTF-8); UI: en-US Calc: threaded Marking as verified. Thanks! |