1789208 - With backdrop:filter enabled, graphic glitches on pinch-zooming codepen demo

Status: RESOLVED FIXED

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

Description

[Mayank Bansal]

Go to https://codepen.io/meodai/pen/WNJNqQz
Pinch zoom

Some glitches will appear.

Cant get a regression range.
This doesnt repro if the demo is downloaded locally and then tested.

Comment 1

[Mayank Bansal]

Attachment: about:support

Comment 2

[Mayank Bansal]

Attachment: bandicam 2022-09-05 13-57-47-138.mp4

Comment 3

[Nicolas Silva [:nical]]

Looks like it might be a pixel snapping issue during async zoom.

Glenn, would this fit in the H2 quality candidate list? It's a bit of flickering during pinch zoom, I don't expect it should climb too high up the priority list.

Comment 4

[Mayank Bansal]

This doesnt repro if I disable backdrop:filter

Comment 5

[Mayank Bansal]

This is the regression range I came up with :
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=447e192227c62a8bc2d7a540a51ad5e4c7efa738&tochange=78a43d5ba28e7c42c8380465a793dfa1eb6bf9f2

Comment 6

[Glenn Watson [:gw]]

This may be fixed when https://bugzilla.mozilla.org/show_bug.cgi?id=1800358 lands.

Comment 7

[Mayank Bansal]

Fixed by bug 1800358