1090947 - big log lines render black, then text overlaps

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[[e-mail] (:bhearsum)]

Attachment: black.png

I noticed this starting with the October 27th nightly on Linux. I loaded http://ftp.mozilla.org/pub/mozilla.org/firefox/candidates/34.0b4-candidates/build1/logs/release-mozilla-beta-updates-bm82-build1-build35.txt.gz, the tab rendered black, and then after scrolling a bit it rendered like the attachment - completely unreadable. It seems to get worse after more scrolling, but gets a bit better from time to time too.

Comment 1

[Alice0775 White]

I can reproduce the problem on Windows with HWA is disabled

Regression window(m-i)
Good:
https://hg.mozilla.org/integration/mozilla-inbound/rev/2dbb3fbd7385
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0 ID:20141019035113
Bad:
https://hg.mozilla.org/integration/mozilla-inbound/rev/2cb4b5b08374
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0 ID:20141019055613
Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=2dbb3fbd7385&tochange=2cb4b5b08374

Regressed by: Bug 1083753

Comment 2

[Alice0775 White]

[Tracking Requested - why for this release]:

Comment 3

[Jonathan Watt [:jwatt]]

In about:support, what does AzureContentBackend say for you guys?

Comment 4

[Alice0775 White]

(In reply to Jonathan Watt [:jwatt] from comment #3)
> In about:support, what does AzureContentBackend say for you guys?

AzureContentBackend	cairo

Comment 5

[Jonathan Watt [:jwatt]]

I was wondering how you were seeing this on Windows, but if you're using cairo rather than D2D that makes sense.

Comment 6

[[e-mail] (:bhearsum)]

I've got cairo too. I can't reproduce anymore though.

Comment 7

[[e-mail] (:bhearsum)]

Oops, nevermind. I can reproduce with that original log link.

Comment 8

[Jonathan Watt [:jwatt]]

My patch for bug 1083755 should have fixed this.