Bookmark font changes by itself

RESOLVED INACTIVE

Status

()

Core
Graphics
P3
normal
RESOLVED INACTIVE
2 years ago
2 days ago

People

(Reporter: Ed, Unassigned)

Tracking

50 Branch
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Whiteboard: [gfx-noted])

Attachments

(2 attachments)

(Reporter)

Description

2 years ago
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20161129173726

Steps to reproduce:

Open Bookmarks from bookmarks toolbar and then to sub sub folder where there are a lot of items (bookmarks). 


Actual results:

I've noticed that if I use mouse wheel to scroll the long bookmarks list the font becomes pixelated (and more thin). If I stop scrolling and wait 1..2 seconds. FF redraws all the bookmarks with good (smooth and fat) font. 


Expected results:

Font should not change and should always be good and smooth.
What is going on?

Updated

2 years ago
Component: Untriaged → Graphics: Text
Product: Firefox → Core
Kats, is this low res tiling?
Component: Graphics: Text → Graphics
Flags: needinfo?(bugmail)
Priority: -- → P3
Whiteboard: [gfx-noted]
(Reporter)

Comment 2

2 years ago
Created attachment 8818023 [details]
FF-BookmarkFontJumping.mp4

This is a video of the bug made from a smartphone (sorry for 90 degree rotation, which smartphone did)
Doesn't look like low-res tiling. Looks more like the antialiasing is changing based on whether the layer is active or not. Markus?
Flags: needinfo?(bugmail) → needinfo?(mstange)
Sounds like another instance where layout thinks subpixel AA cannot be applied. Not sure if it's related to the other text stuff you're looking at, Mason.
Flags: needinfo?(mstange) → needinfo?(mchang)
(In reply to Markus Stange [:mstange] from comment #4)
> Sounds like another instance where layout thinks subpixel AA cannot be
> applied. Not sure if it's related to the other text stuff you're looking at,
> Mason.

Thanks for the heads up. This is on Firefox 50, so we'd use cairo if he doesn't have acceleration. This is unrelated to Skia. But this does look like another instance of subpixel AA turning on/off.

Can you post your about support?
Flags: needinfo?(mchang) → needinfo?(e_gold)
(Reporter)

Comment 6

2 years ago
Created attachment 8819476 [details]
about:support then "copy text to clipboard"
Thanks for the about:support! Yeah this is Cairo, which is just the difference between subpixel and grayscale AA here.
Flags: needinfo?(e_gold)

Comment 8

2 days ago
Per policy at https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Inactive_Bugs. If this bug is not an enhancement request or a bug not present in a supported release of Firefox, then it may be reopened.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 2 days ago
Resolution: --- → INACTIVE
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