1592564 - [wayland][webrender] window rendering is completely broken

Status: RESOLVED DUPLICATE of bug 1589114

(Core :: Widget: Gtk, defect)

Description

[luis.pabon]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0

Steps to reproduce:

• New or old firefox profile.
• intel graphics
• ubuntu 19.10
• firefox 71 beta 5 from canonical's firefox beta ppa (this wasn't an issue on FF 70 betas or FF70 release) 71.0~b5+build1-0ubuntu0.19.10.1

layers.acceleration.force-enabled: true/false
gfx.webrender.all: true

Similar behaviour in both Gnome/wayland and Sway 1.2/wlroots 0.8.1

Actual results:

• Beyond a certain window size, firefox window fails to render portions of it
• When maximised (either all-screen or half-screen) on displays that are set above (I have a setup with two scale 1 displays above and a scale 2 display beneath), the display firefox should be at shows an empty square (in gnome it's black, in sway it's transparent) while showing window contents on the display below

Expected results:

Firefox renders normally.

Comment 1

[luis.pabon]

Attachment: Gnome

Comment 2

[luis.pabon]

Attachment: Screenshot from 2019-10-30 11-35-42.png

Comment 3

[luis.pabon]

Attachment: Gnome, maximised half-screen on top-right (black area should contain firefox) but somehow renders below

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 5

[luis.pabon]

Attachment: Sway, maximised on lower display

Comment 6

[luis.pabon]

Attachment: Sway, floating window, note the blue square, that's how large the firefox window should be

Comment 7

[luis.pabon]

Attachment: Sway, maximised on top-left window, note the blue square, that's how large the firefox window should be

Comment 8

[luis.pabon]

For the bug bot, this is a regression between v70 and v71

Comment 9

[luis.pabon]

Potentially the same as https://bugzilla.mozilla.org/show_bug.cgi?id=1589114