Bug 141717 - Fonts with lots of ligatures display incorrectly at big sizes
Summary: Fonts with lots of ligatures display incorrectly at big sizes
Status: RESOLVED INSUFFICIENTDATA
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
7.1.2.2 release
Hardware: All Windows (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: Font-Rendering
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Reported: 2021-04-16 20:24 UTC by Katie &
Modified: 2024-01-27 07:44 UTC (History)
1 user (show)

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Description Katie & 2021-04-16 20:24:26 UTC
Description:
When using a font that is full of ligatures (as in, most of the glyphs used are ligatures), setting the size at something like 300 will cause symbols to start merging.

Steps to Reproduce:
1. Install the font at https://ampersandia.net/raiaqsuq.otf
2. Write "laiq" and set its font size at 300

Actual Results:
The symbols for "la" and "iq" merge as if they were one, there has to be a space between them to make them appear as different glyphs

Expected Results:
The symbols for both syllables should as separate symbols, without need for a space in between to separate them


Reproducible: Always


User Profile Reset: Yes



Additional Info:
This seems to be related to a bug I encountered where the font appears to have strange spacing and new symbols that are not in the original text. I don't know how to recreate this one.

I couldn't find a way to check if OpenGL is enabled, I followwed these steps https://wiki.documentfoundation.org/OpenGL#How_to_enable.2Fdisable_OpenGL but I didn't find any "Use OpenGL for all rendering", instead I found a "Use Skia for all rendering". The bug still happened with skia disabled
Comment 1 V Stuart Foote 2021-05-01 05:31:22 UTC
Please retest with a 7.1.3.2 build just released, x-scale of glyphs got some attention, may improve things here.
Comment 2 QA Administrators 2021-10-30 04:37:34 UTC Comment hidden (obsolete)
Comment 3 QA Administrators 2021-11-30 04:27:08 UTC Comment hidden (obsolete)
Comment 4 danielkyler 2024-01-27 07:44:08 UTC Comment hidden (spam)