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Bug 103971 - Poor font rendering at certain zoomlevels, when ClearType is disabled (GDI)
Summary: Poor font rendering at certain zoomlevels, when ClearType is disabled (GDI)
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
(earliest affected)
3.4.6 release
Hardware: All Windows (All)
: low minor
Assignee: Not Assigned
Depends on:
Blocks: Font-Rendering
  Show dependency treegraph
Reported: 2016-11-17 09:32 UTC by Telesto
Modified: 2016-11-24 16:50 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:

Example File (12.14 KB, application/vnd.oasis.opendocument.spreadsheet)
2016-11-17 09:34 UTC, Telesto
Screenshot font rendering (178.03 KB, image/jpeg)
2016-11-17 09:35 UTC, Telesto

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Description Telesto 2016-11-17 09:32:31 UTC
The font rendering

Steps to Reproduce:
1. Disable clear-type
2. Open example file
2. Set zoom factor to 120%

Actual Results:  
Poor font rendering

Expected Results:
Consequent font rendering

Reproducible: Always

User Profile Reset: YES

Additional Info:
Tested with:
Build ID: e8938fd3328e95dcf59dd64e7facd2c7d67c704d
Locale: nl_NL

Build ID: b223028d65d24ffcd8e27974c29c2744a5df6227
CPU Threads: 4; OS Version: Windows 6.2; UI Render: default; Layout Engine: new; 
TinderBox: Win-x86@62-merge-TDF, Branch:MASTER, Time: 2016-11-16_22:50:22
Locale: nl-NL (nl_NL); Calc: CL

User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Comment 1 Telesto 2016-11-17 09:34:52 UTC
Created attachment 128805 [details]
Example File
Comment 2 Telesto 2016-11-17 09:35:56 UTC
Created attachment 128806 [details]
Screenshot font rendering
Comment 3 Telesto 2016-11-18 09:58:20 UTC
Addition: it's a GDI only bug.
Comment 4 Buovjaga 2016-11-24 11:29:40 UTC

Win 7 Pro 64-bit Version:
Build ID: 172325bedf69bbc162f3c1948264451c90c105a3
CPU Threads: 4; OS Version: Windows 6.1; UI Render: default; Layout Engine: new; 
TinderBox: Win-x86@39, Branch:master, Time: 2016-11-21_05:26:40
Locale: fi-FI (fi_FI); Calc: group
Comment 5 Khaled Hosny 2016-11-24 16:50:11 UTC
(In reply to Telesto from comment #0)
> 1. Disable clear-type

Don’t do that, old non-ClearType rendering is not supported.