1468732 - Warning: "Unknown font instance key" when (un)maximizing the window

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P5)

Description

[Darkspirit]

Attachment: 2018-06-14_16-43-57.mp4

mozregression --launch 2018-06-14 -B debug --pref gfx.webrender.all:true startup.homepage_welcome_url:'https://www.gatsbyjs.org/'

See attached video.

RUST_LOG=debug mozregression --launch 2018-06-14 -B debug --pref gfx.webrender.all:true startup.homepage_welcome_url:'https://www.gatsbyjs.org/'
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 40)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 37)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 37)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 37)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 37)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 37)
> 2:10.23 INFO:  WARN 2018-06-14T14:26:46Z: webrender::display_list_flattener: Unknown font instance key
> 2:10.23 INFO: DEBUG 2018-06-14T14:26:46Z: webrender::display_list_flattener: key=FontInstanceKey(IdNamespace(3), 46)

https://searchfox.org/mozilla-central/rev/40577076a6e7a14d143725d0288353c250ea2b16/gfx/webrender/src/display_list_flattener.rs#1881

Comment 1

[Aria Beingessner [:Gankra]]

does this warning have any associated user-visible misbehaviours?

Comment 2

[Darkspirit]

In the case this bug is not related to bug 1452513 comment 19, I wouldn't be aware of any problematic misbehaviour.

Comment 3

[Darkspirit]

RUST_LOG=debug mozregression --find-fix --bad 2018-06-14 --good 2018-09-09 -B debug --pref gfx.webrender.all:true privacy.trackingprotection.enabled:true privacy.trackingprotection.introCount:1 -a https://www.gatsbyjs.org/
> 63:38.96 INFO: First good revision: 80efe717b563f329a2261a8d23f4ebbc470c432f
> 63:38.96 INFO: Last bad revision: 8984f6868e572079cc991492124ba99747f0f681
> 63:38.96 INFO: Pushlog:
> https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=8984f6868e572079cc991492124ba99747f0f681&tochange=80efe717b563f329a2261a8d23f4ebbc470c432f

> 80efe717b563	Nicolas Silva — Bug 1455422 - Implement the new blob image rasterization hooks. r=kats, gankro
> 7041b2f0aef8	Jeff Muizelaar — Bug 1476636. Update Cargo lockfiles, re-vendor rust dependencies
> 5fdc7f00aba1	Jeff Muizelaar — Bug 1476636. Update webrender to commit 9f21ee5dba0694818a1e2e46d95734ede281447c

Could this have been fixed by async blob?

Comment 4

[Darkspirit]

Other possible patch would be "Reduce glyph key to 32 bits": servo/webrender#2894