Bug 431849

Summary:	Small Imperfections of Font Rendering
Product:	[Applications] okular	Reporter:	Jack <jack6566>
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	aacid
Priority:	NOR
Version First Reported In:	20.12.1
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Jack 2021-01-20 12:38:48 UTC

SUMMARY
Despite setting Okular for maximum font quality (default setting has only "Enable Text Antialias" and "Enable Graphics Antialias", but BY DEFAULT "Enable Text Hinting" IS MISSING. Regardless of the settings while comparing to the text rendering of e.g. muPDF-GL, Okular loses. muPDF rendering is a little sharper.

STEPS TO REPRODUCE
1. Fix your distro font rendering by installing patched cariro, patched freetype, set all for max quiality of font rendering (color filering and a few others+ Professional fonts - e.g. IBM Plex Serif Medium. Just to be on the safe side.
2. Install muPD-GL
3. Compare both renderings. Okular could still be better regardelss of the fact that you had to manually tick the settings "enable text hinting".



EXPECTED RESULT:
Get text rendering in Okular on par with its competitors.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.12.2

Comment 1 Albert Astals Cid 2021-01-20 21:02:27 UTC

Okular doesn't do any pdf rendering.

> Fix your distro font rendering by installing patched cariro, patched freetype

Makes me think you're breaking too many things by trying patching, but anyhow, not an okular issue.