1573914 - backdrop-filter jitter while animating transform

Status: RESOLVED FIXED

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

Description

[Connor Brewster [:cbrewster]]

When animating the transform of an element with backdrop-filter, the filtered backdrop seems to have some jitter.
https://codepen.io/cgbrewster/pen/OJLyjGp

This is likely due to some rounding issues as the size of the backdrop region changes.

Comment 1

[Connor Brewster [:cbrewster]]

Attachment: Bug 1573914 - Fix backdrop-filter jitter during animation due to snap offsets r?gw,nical,kvark

Since the filtered-backdrop is 1:1 with the backdrop, we don't want any snap offsets to shift the contents

Comment 2

[Connor Brewster [:cbrewster]]

https://treeherder.mozilla.org/#/jobs?repo=try&revision=e167ef6d749be81ec24e30bb79c8af07a72660a5

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9e513ae4747f
Fix backdrop-filter jitter during animation due to snap offsets r=gw

Comment 4

[Natalia Csoregi [:nataliaCs]]

https://hg.mozilla.org/mozilla-central/rev/9e513ae4747f