1587071 - Chrome fonts and icons color problems on WebRender

Status: RESOLVED DUPLICATE of bug 1558167

(Core :: Graphics: WebRender, defect)

Description

[Dirkjan Ochtman (:djc)]

Attachment: Screen Shot 2019-10-08 at 14.50.31.png

Comment 1

[Dirkjan Ochtman (:djc)]

Attachment: Screen Shot 2019-10-08 at 14.53.01.png

Comment 2

[Dirkjan Ochtman (:djc)]

This is on macOS Catalina (2018 MBP), latest Nightly. Radeon Pro 555X 4 GB + Intel UHD Graphics 630 1536 MB.

Comment 3

[Dirkjan Ochtman (:djc)]

I thought this was a regression at first, but I'm seeing similar behavior even with nightlies from 2019-09-01. On the other hand, I did definitely not see the problem this morning when I first started using some nightly (probably yesterday's) on the same machine, running the same OS. The only thing that I can think of that is different is that I have now plugged in a non-Retina external screen.

Comment 4

[Dirkjan Ochtman (:djc)]

Somewhat confirmed that it seems to work alright as long as I don't have my external (@1x) screen plugged in.

Comment 5

[Dirkjan Ochtman (:djc)]

Actual results from mozregression: 2019-10-06 bad, 2019-09-30 bad, 2019-09-01 bad.

Comment 6

[Glenn Watson [:gw]]

Could this be related to the swizzle settings code? Perhaps due to the GPU being switched when the external screen is plugged in?

Comment 8

[Nicolas Silva [:nical]]

Dupe of bug 1558167.

Comment 9

[Jeff Muizelaar [:jrmuizel]]

(In reply to Dirkjan Ochtman (:djc) from comment #5)

Actual results from mozregression: 2019-10-06 bad, 2019-09-30 bad, 2019-09-01 bad.

What about builds earlier than July 30?

Comment 10

[Dzmitry Malyshau [:kvark]]

This may be related to the swizzling code, in a sense that AMD drivers on macOS 10.15 for some reason don't like it and behave in a broken way (we have a similar situation with Intel IvyBridge on macOS specifically). I kicked off a try with swizzling forcefully disabled, so that we can verify:
https://treeherder.mozilla.org/#/jobs?repo=try&revision=32bee3d53517ef6c491f3458c1c54846d000ca67

Comment 11

[Dzmitry Malyshau [:kvark]]

Attachment: Disable swizzling on macOS 10.15 AMD devices

Comment 12

[Phabricator Automation]

Comment on attachment 9099659 [details]
Disable swizzling on macOS 10.15 AMD devices

Revision D48591 was moved to bug 1558167. Setting attachment 9099659 [details] to obsolete.

Comment 13

[Dirkjan Ochtman (:djc)]

Clearing the needinfo, since this was closed as a duplicate. If it's still useful to try a mozregression from a longer window, let me know in bug 1558167.