1487570 - 3d transforms regression on https://3dtransforms.desandro.com/cube

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P1)

Description

[Darkspirit]

Attachment: 2018-08-31_01-34-17.mp4

mozregression --good 2018-07-01 --bad 2018-08-30 --pref gfx.webrender.all:true -a https://3dtransforms.desandro.com/cube
> 9:48.97 INFO: Last good revision: 32a8875a1721cd9369931bb5e1b74da448455bff
> 9:48.97 INFO: First bad revision: b6f3d38d8da5c786f3160c24960001d88ae86a28
> 9:48.97 INFO: Pushlog:
> https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=32a8875a1721cd9369931bb5e1b74da448455bff&tochange=b6f3d38d8da5c786f3160c24960001d88ae86a28

> b6f3d38d8da5	Kartikaya Gupta — Bug 1479432 - Update Cargo lockfiles and re-vendor rust dependencies. r=jrmuizel
> 4088993297c4	Kartikaya Gupta — Bug 1479432 - Update webrender to commit 7a1b919e37d6cd0155077aa90f98cfcdf9fa5bae. r=jrmuizel

Try builds are gone.

Regression range: https://github.com/servo/webrender/compare/8a4fe66528aa362721e4048aac3cd5abf7faaf2c...7a1b919e37d6cd0155077aa90f98cfcdf9fa5bae

Screencast:
Last "good" (left): mozregression --repo autoland --launch 32a8875a1721cd9369931bb5e1b74da448455bff --pref gfx.webrender.all:true -a https://3dtransforms.desandro.com/cube
First bad (right): mozregression --repo autoland --launch b6f3d38d8da5c786f3160c24960001d88ae86a28 --pref gfx.webrender.all:true -a https://3dtransforms.desandro.com/cube

Comment 1

[Dzmitry Malyshau [:kvark]]

That's an interesting issue, thanks for diagnosing it and finding the regression range!

Comment 2

[Dzmitry Malyshau [:kvark]]

Re-assigning to Glenn, whose WR PR addresses this: https://github.com/servo/webrender/pull/3030

Comment 4

[Glenn Watson [:gw]]

I tested again locally with the latest changes in https://github.com/servo/webrender/pull/3030 applied, and this appears to be working correctly. We should be able to verify and close this once that patch is merged and lands in Gecko.