Description: Hi, Text rendering is LibreOffice 6.1 is considerably worse than what it was in version 5.1. I did not thoroughly check to see in which version the difference appeared. Please take a look at the pictures. https://drive.google.com/drive/folders/1MYfDE-j9Q8eIwc5wG5V5cymZikqYlh13?usp=sharing Thank you. Setup for both LibreOffice 6.1 and 5.1: Windows 10 and LibreOfficePortable Actual Results: N/A Expected Results: N/A Reproducible: Always User Profile Reset: No Additional Info:
What rendering were you using? OpenGL or Default (CPU only, or with Hardware Acceleration) Also, for your screen clips--is that a Writer file, and at what document zoom did you set when you screen clipped?
Created attachment 148031 [details] LibreOffice 5.1 large fonts
Created attachment 148032 [details] LibreOffice 5.1 small fonts
Created attachment 148033 [details] LibreOffice 6.1 large fonts
Created attachment 148034 [details] LibreOffice 6.1 small fonts
I just copied the images to the bug report. It looks like Antialiasing is missing. Please copy the info from "About LibreOffice" dialog. And add your example documents.
Created attachment 148049 [details] LibreOffice 5.1 sample document and AboutLibreOffice
Created attachment 148050 [details] LibreOffice 6.1 sample document and AboutLibreOffice
I added two sample documents with the AboutLibreOffice included. Thank you.
The screen rendering went off a cliff, on Windows at least, with LO v5.3. This is when the rendering engine was changed. On Windows this caused the aliasing to go from the full-color Cleartype aliasing to some kind of lesser grayscale-only aliasing. So on Windows the move to Harfbuzz (BarfHuzz) was a step backwards. Below I have attached zoomed-in screenshots of your small images. In the first one from LO v5.1 you can see the colors in the aliasing. In the second one from LO v6.1 you can see only grayscale. There was also apparently some change in how the vertical metrics are rendered. This is why you see changes in the line heights. You will also see at smaller sizes the characters appear to jump around and have big gaps between them due to changes in how the hinting is handled. None of this is documented anywhere that I have found. You can only discover bits and pieces of what is happening by reviewing multiple bug reports. I think some people just don't want to talk about it. From what I have seen there currently are no plans to fix this. The LO fonts rendering "guru" appears to have abandoned the ship when it sank. .
Created attachment 148187 [details] LibreOffice 5.1 cleartype full color aliasing The LibreOffice 5.1 Cleartype full-color aliasing looks much better onscreen.
Created attachment 148189 [details] LibreOffice 6.1 grayscale only aliasing The LibreOffice 6.1 grayscale only aliasing looks a lot more jagged onscreen.
(In reply to LibreTraining from comment #11) > Created attachment 148187 [details] > LibreOffice 5.1 cleartype full color aliasing > > > The LibreOffice 5.1 Cleartype full-color aliasing looks much better onscreen. This is what I get with 6.1 and 6.3. Cleartype is on (Win 10). I wonder, why we get different results?
From Sam's sample documents we see in 5.1 he is not using OpenGL and in 6.1 he is (Sam: please next time just select & copy the text from the About window and do not bother to take a screenshot). LibreTraining: are you using OpenGL or not?
A general discussion is needed: https://bugs.documentfoundation.org/show_bug.cgi?id=122730
Created attachment 148711 [details] Bibisect log Somehow OpenGL is forcing font hinting without ClearType enabled. Creating a bit of a blurry experience. Bisected to: author Tim Eves <tim_eves@sil.org> 2016-02-23 16:45:21 +0000 committer Tor Lillqvist <tml@collabora.com> 2016-03-14 12:50:59 +0200 commit e45d80f20ff6a05888f92ae942abed67609d5b20 (patch) tree fef594425e80e321d4b6466e228fb4a85c97cac7 parent 2a1b70c4b2d5debf235c088a1e3c71a3457c1af7 (diff) tdf#97171: Use DirectWrite for OpenGL glyph caching https://cgit.freedesktop.org/libreoffice/core/commit/?id=e45d80f20ff6a05888f92ae942abed67609d5b20
Created attachment 148712 [details] Comparison screenshot magnified 300%
The information is really very informative and provides some useful information about the newer versions of LibreOffice also can check https://uaetechnician.ae/acer-laptop-hard-disk-replacement for more information in detail.
Setting to NEW since it has been bisected in comment 16 Adding Cc: to Tim Eves
*** Bug 125249 has been marked as a duplicate of this bug. ***
Hello, are there any updates regarding this bug?
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Comment on attachment 148031 [details] LibreOffice 5.1 large fonts Thank you for your work. I love this website. I am reading useful information. https://sivisolucangubresi.org/
Comment on attachment 148031 [details] LibreOffice 5.1 large fonts Thank you for your work. I love this website. I am reading useful information. https://www.rivasol.com.tr/
There's no OpenGL anymore. Please retest master 7.1+ with and without Skia.
Bitkilerde, çiçeklerde, orkidede, sukulente https://www.rivasol.com.tr/blog/solucan-gubresi-bitkilere-nasil-uygulanir Solucan Gübresi Nasıl Kullanılır. çiçeklerine iyi bakmak için https://www.rivasol.com.tr/solucan-gubresisolucan gübresi satın alıp bitkilerine iyi bakabilirsiniz.https://www.rivasol.com.tr/sivi-solucan-gubresien iyi sıvı solucan gübresi, rivasol tarımdan satın alınır.
(In reply to Timur from comment #25) > There's no OpenGL anymore. Please retest master 7.1+ with and without Skia. Sam, could you please retest with LO 7.5?
Created attachment 187120 [details] Comparison of LibreOffice renderers - small text
I've made a comparison of available renderers in LO 7.4, 6.1, and 5.1. For me, using LO 7.4 on Windows with a Nvidia GeForce RTX 3070 graphics card with Skia enabled, LO often starts to lag, never immediately after launching LO. I haven't noticed the problem with Skia disabled. Is it not possible to offer all possible renderers?
(In reply to Sam from comment #29) > I've made a comparison of available renderers in LO 7.4, 6.1, and 5.1. For > me, using LO 7.4 on Windows with a Nvidia GeForce RTX 3070 graphics card > with Skia enabled, LO often starts to lag, never immediately after launching > LO. I haven't noticed the problem with Skia disabled. Is it not possible to > offer all possible renderers? Skia comes in two flavors. Skia Vulkan and Skia Raster Menu Tools -> Options -> View -> Check force skia software rendering (to activate Raster). Press OK and restart