1822189 - filter: drop-shadow() causes image stretching and shadow clipping

Status: UNCONFIRMED

(Core :: Graphics: WebRender, defect)

Description

[justin.djordjevic]

Attachment: firefox_drop_shadow_bug.zip

Steps to reproduce:

I have an image with filter: drop-shadow() applied to it and a separate div that animates in drop shadow.

Actual results:

During the animation, the image gets stretched on some sides and the drop shadow gets clipped around the animated div.

Expected results:

Both the image and the drop shadow applied to the image should not have any render issues during animations.

Comment 1

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

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

Comment 2

[Alice0775 White]

Regression window:

https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=e981d54aa148bd2d73f0f8f8ac4e90b13420a77f&tochange=3c3520362bda55a31840d9a4ed3a6cc9bb097cfd

Comment 3

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

:gw, since you are the author of the regressor, bug 1757876, could you take a look? Also, could you set the severity field?

For more information, please visit auto_nag documentation.

Comment 4

[Timothy Nikkel (:tnikkel)]

Interesting, I can see problems in this testcase going back much further than comment 2's regression range.