1506053 - When changing window size on Bugzilla, glyphs are jumping one pixel to the left or right.

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P3)

Description

[Darkspirit]

Attachment: 2018-11-09 09-22-14.mp4

Win10, GTX1060

When changing window size on Bugzilla, glyphs are jumping/snapping one pixel to the left or right. I haven't seen this on other websites yet.

mozregression --good 2018-05-15 --bad 2018-07-15 --pref gfx.webrender.all:true -a https://bugzilla.mozilla.org/show_bug.cgi?id=1492443
> 17:07.23 INFO: Last good revision: e70e3d46d44190f66bc61b979c334424606578de
> 17:07.23 INFO: First bad revision: 6e93883796aaffd17c2e0b387bd758749640ce66
> 17:07.23 INFO: Pushlog:
> https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=e70e3d46d44190f66bc61b979c334424606578de&tochange=6e93883796aaffd17c2e0b387bd758749640ce66

> 6e93883796aa	Kartikaya Gupta — Bug 1463416 - use new WR subpixel positioning API from WR PR 2738. r=Gankro
> fa600f06d421	Kartikaya Gupta — Bug 1463416 - Update reftest annotations for changes in WR PR 2767. r=Gankro
> 20d0acbdc894	Kartikaya Gupta — Bug 1463416 - Update for API changes in WR PR 2718. r=nical
> 52e2d7efe721	Kartikaya Gupta — Bug 1463416 - Update lockfiles and re-vendor rust dependencies. r=Gankro
> b2e3cbd5aeca	Kartikaya Gupta — Bug 1463416 - Update webrender to cset 63c71ca9bbe4dec0ebc9c9bc8ab65b06a6b40641. r=Gankro

Regression range: https://github.com/servo/webrender/compare/bb354abbf84602d3d8357c63c4f0b1139ec4deb1...63c71ca9bbe4dec0ebc9c9bc8ab65b06a6b40641

Probably https://github.com/servo/webrender/pull/2738.

Screencast: mozregression --launch 2018-11-08 --pref gfx.webrender.all:true -a https://bugzilla.mozilla.org/show_bug.cgi?id=1492443