1765283 - CSS3D transform not working properly from Firefox 99 up to NIghtly (Firefox 98 was fine)..

Status: RESOLVED DUPLICATE of bug 1764875

(Core :: Graphics: WebRender, defect)

Description

[francisco]

Attachment: firefox_99.jpg

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0

Steps to reproduce:

In Firefox 99 (or Beta or Nightly) go to https://umniverse.com and click "3D" button (top right)

Actual results:

html represented on the red and blue objects is strongly pixelated.

Expected results:

html should be well drawn inside the objects.
Firefox up to 98 (at least for the last 6 years), Chrome and Safari continue to show the correct representation.

Comment 1

[francisco]

Attachment: firefox_98 chrome safari.jpg

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Layout' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[Mayank Bansal]

2022-04-19T21:17:56.240000: INFO : platform_repository: https://hg.mozilla.org/integration/autoland
2022-04-19T21:17:56.240000: INFO : platform_version: 99.0a1
2022-04-19T21:18:07.578000: INFO : Narrowed integration regression window from [31dcf64c, fc2b3d64] (3 builds) to [c6f1243c, fc2b3d64] (2 builds) (~1 steps left)
2022-04-19T21:18:07.610000: DEBUG : Starting merge handling...
2022-04-19T21:18:07.610000: DEBUG : Using url: https://hg.mozilla.org/integration/autoland/json-pushes?changeset=fc2b3d6448bcc3575fffb1abc923e7e703aeef54&full=1
2022-04-19T21:18:07.610000: DEBUG : redo: attempt 1/3
2022-04-19T21:18:07.610000: DEBUG : redo: retry: calling _default_get with args: ('https://hg.mozilla.org/integration/autoland/json-pushes?changeset=fc2b3d6448bcc3575fffb1abc923e7e703aeef54&full=1',), kwargs: {}, attempt #1
2022-04-19T21:18:07.610000: DEBUG : urllib3.connectionpool: Resetting dropped connection: hg.mozilla.org
2022-04-19T21:18:09.826000: DEBUG : urllib3.connectionpool: https://hg.mozilla.org:443 "GET /integration/autoland/json-pushes?changeset=fc2b3d6448bcc3575fffb1abc923e7e703aeef54&full=1 HTTP/1.1" 200 None
2022-04-19T21:18:09.857000: DEBUG : Found commit message:
Bug 1749380 - Part 2 - Performance and quality fixes for part 1. r=gfx-reviewers,nical

• Add support for local scale factors to a surface, allowing it to
  be rasterized in root coordinate space. This allows snapping to
  work across surfaces where the surface transform is a fractional
  offset.

• Calculate scaling factors per rasterized surface and propagate
  them. Ensures correct scale factor calculations when dealing with
  nested preserve-3d contexts with 90-degree axis rotations.

• Support determining exact surface device rect for 2d surfaces
  with fractional surface transforms.

• Fix line decoration cache key size calculations based on world
  scaling factor.

• Remove get_clipped_device_rect usage for calculating clip-mask
  surface allocations, use surface.get_surface_rect instead. The
  prior method doesn't correctly account for expanded local regions
  from the current dirty rect, resulting in invalidation issues in
  some animated edge cases. Also unifies the way clip-mask surface
  allocations work with the way general render target surface
  allocations work.

Differential Revision: https://phabricator.services.mozilla.com/D138982

2022-04-19T21:18:09.857000: DEBUG : Did not find a branch, checking all integration branches
2022-04-19T21:18:09.857000: INFO : The bisection is done.
2022-04-19T21:18:09.857000: INFO : Stopped

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1749380

Comment 5

[Glenn Watson [:gw]]

I confirmed that the patch in bug 1764875 fixes this.