1737209 - WPT test transform-interpolation-rotate-slerp.html fails in Firefox

Status: RESOLVED FIXED

(Core :: Layout, defect, P3)

Description

[Daniel Holbert [:dholbert] (PTO until 2/24)]

Filing this bug for this WPT failure:

https://wpt.fyi/results/css/css-transforms/animation/transform-interpolation-rotate-slerp.html

Direct link to testcase:
https://wpt.live/css/css-transforms/animation/transform-interpolation-rotate-slerp.html
Reference case:
https://wpt.live/css/css-transforms/animation/transform-interpolation-ref.html?rotateSlerp

In Firefox, the first rectangle has its blue section at the bottom-right in Firefox, whereas the reference case (and other browsers) have that blue section at the top-left.

This test happens to be in the 'compat2021' subset of WPT tests; hence, filing as blocking that metabug.

Comment 1

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

The severity field is not set for this bug.
:emilio, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 2

[Boris Chiou [:boris]]

Attachment: Bug 1737209 - Fix the conversion from (axis,angle) pair to the quaternion vector.

Per wiki,
https://en.wikipedia.org/wiki/Quaternions_and_spatial_rotation,
we have to make sure the range of the angle is limited to [0, 360deg).

Comment 3

[Boris Chiou [:boris]]

Attachment: Bug 1737209 - Remove unused functions of decomposing 2d and 3d matrix.

We keep these functions because we used them for compositor animations before
merging stylo. Now we always use the equivalent rust version for all the
transform interpolation, on both the main-thread and the compositor thread.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/249fcb88ac15
Remove unused functions of decomposing 2d and 3d matrix. r=zrhoffman
https://hg.mozilla.org/integration/autoland/rev/76deb26ecf8a
Fix the conversion from (axis,angle) pair to the quaternion vector. r=emilio

Comment 5

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/249fcb88ac15
https://hg.mozilla.org/mozilla-central/rev/76deb26ecf8a