1434006 - Irregular dotted border with WebRender enabled

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P2)

Description

[Clemens Eisserer]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180129100406

Steps to reproduce:

1. Browsed to: https://edufs.edu.htl-leonding.ac.at/
2. Selected a link


Actual results:

the dottet border drawn around the link is drawn irregular with webrender enabled


Expected results:

regular border, same as when using basic/opengl rendering/composition

Comment 1

[Clemens Eisserer]

Attachment: dottet_border_webrender.png

Comment 2

[Clemens Eisserer]

Attachment: dottet_border_opengl.png

Comment 3

[Clemens Eisserer]

both screenshots were taken at 100% zoom level.
System: Fedora 27, Linux-4.14.14, Mesa-17.2.4 on AMD Kaveri APU (7650K).

Comment 4

[Darkspirit]

Nightly 60 x64 20180129100406 de_DE @ Debian Testing (KDE, Radeon RX480)
fresh profile: gfx.webrender.all;true, browser.display.focus_ring_width;1 (default)

Confirmed. Only at >= 180% zoom it looks like non-WR.

Comment 5

[Milan Sreckovic [:milan] (needinfo for best results)]

Cross platform?

Comment 6

[Darkspirit]

Attachment: Screenshot_20180131_042309.png

mozregression --good 2017-05-10 --bad 2017-06-10 --pref layers.acceleration.force-enabled:true gfx.webrender.enabled:true gfx.webrendest.enabled:true gfx.webrender.all:true gfx.webrender.layers-free:true gfx.webrender.blob-images:true image.mem.shared:true layout.display-list.retain:false startup.homepage_welcome_url:"http://edufs.edu.htl-leonding.ac.at/"
> 11:04.06 INFO: Last good revision: 5a8f2dcbeac0677b5aae0f9fd43d6a33309b4a6b
> 11:04.06 INFO: First bad revision: 979f11deabd01d6cb897d064d3d9ed11ea8baa93
> 11:04.06 INFO: Pushlog:
> https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=5a8f2dcbeac0677b5aae0f9fd43d6a33309b4a6b&tochange=979f11deabd01d6cb897d064d3d9ed11ea8baa93
> 
> 11:05.25 ERROR: Unable to exploit the merge commit. Origin branch is mozilla-central, and the commit message for 979f11de was:
> Merge graphics to m-c a=merge a=release
> IGNORE BAD COMMIT MESSAGES because something landed and was backed out for no bug number

(2017-05-19)

Comment 8

[Jeff Muizelaar [:jrmuizel]]

Does this happen now on Windows?

Comment 9

[Darkspirit]

Attachment: 2018-09-05 02-23-54.mp4

Yes, up to 190% the focus ring is completely solid instead of dotted. At 200% it's dotted.

Comment 10

[Emilio Cobos Álvarez (:emilio)]

Attachment: GitHub Pull Request