1373024 - Blurry UI fonts with layers.gpu-process.enabled set to true

Status: RESOLVED DUPLICATE of bug 1307833

(Core :: Graphics: Layers, defect)

Description

[motosegaman]

User Agent: Mozilla/5.0 (Windows NT 6.2; rv:56.0) Gecko/20100101 Firefox/56.0
Build ID: 20170614030206

Steps to reproduce:

The setting layers.gpu-process.enabled in about:config was set to true by default.


Actual results:

Somewhat blurry, uglier UI fonts. Webpage fonts are unaffected.


Expected results:

Normal clear fonts that are present if this setting is disabled.

Comment 1

[Markus Stange [:mstange]]

Screenshots are in https://www.reddit.com/r/firefox/comments/6h8nx7/after_disabling_a_single_addon_that_was_blocking/ .

It looks like enabling the GPU process loses subpixel AA.

This is unexpected. motosegaman, can you please attach a text file with the information from about:support? Or better yet, attach two: One taken while you have bad fonts and one while you have good fonts.

Comment 2

[motosegaman]

(In reply to Markus Stange [:mstange] from comment #1)
> Screenshots are in
> https://www.reddit.com/r/firefox/comments/6h8nx7/
> after_disabling_a_single_addon_that_was_blocking/ .
> 
> It looks like enabling the GPU process loses subpixel AA.
> 
> This is unexpected. motosegaman, can you please attach a text file with the
> information from about:support? Or better yet, attach two: One taken while
> you have bad fonts and one while you have good fonts.

For whatever reason I can't reproduce the bug. I've just tried Nightly, Beta, Release, running also a clean profile and playing around with various settings in about:config. Weird, because only recently I tried enabling the setting to see if it was fixed and it's wasn't. And also weird, since the user on reddit had the bug and this solution helped.

This bug also seems to be a duplicate of this one: https://bugzilla.mozilla.org/show_bug.cgi?id=1373024

I'm sorry.

Comment 4

[Markus Stange [:mstange]]

Is it really that bug, though? The screenshots on reddit show loss of subpixel AA even for menu text, which doesn't have any fade-out masks applied to it.