1414771 - pretty severe rendering issues

Status: RESOLVED INVALID

(Core :: Graphics: WebRender, defect)

Description

[Steve Klabnik]

Attachment: webrender.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Build ID: 20171105220721

Steps to reproduce:

Browsed a page on reddit.com. 


Actual results:

Started seeing rendering issues on all pages. Attached is a screenshot of news.ycombinator.com

As I scrolled, it would re-draw in other ridiculous ways as well, all looking vaguely similar, but different parts of the page would be correct and then incorrect.

I closed my browser, and upon re-opening, things seem to be fixed. I'm trying to find a reproducible page now; it's possible that this bug ends up being transient, but I figured best to file regardless.


Expected results:

Proper rendering.

Comment 1

[Kartikaya Gupta (email:[e-mail])]

If you do see this again, please copy your about:support contents into an attachment here. The graphics section may contain useful "critical log" notes that provide a clue as to what happened.

Comment 2

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

Just to be clear, you have the non-default preference values set to enable webrender?

Comment 3

[Steve Klabnik]

(In reply to Kartikaya Gupta (email:[e-mail]) from comment #1)
> If you do see this again, please copy your about:support contents into an
> attachment here. The graphics section may contain useful "critical log"
> notes that provide a clue as to what happened.

Ah, will do, thank you!


(In reply to Milan Sreckovic [:milan] from comment #2)
> Just to be clear, you have the non-default preference values set to enable
> webrender?


Yes, I have webrenderest.enabled (I hear this might not be needed anymore?), webrender.enabled, and webrender.blob-images all set.

Comment 4

[Steve Klabnik]

I haven't been able to reproduce this, so let's just close, and if I can ever reproduce successfully, we can re-open.