1919986 - Thin black line on a conic gradient codepen demo (https://codepen.io/mcShane/pen/mdZNrNj) at specific DPI/Zoom settings

Status: RESOLVED DUPLICATE of bug 1918923

(Core :: Graphics: WebRender, defect)

Description

[Mayank Bansal]

Go to https://codepen.io/mcShane/pen/mdZNrNj
Notice the thin black line going from the center to the left.

Alternately, open the attached testcase at following settings:
DPI=1
DPI=1.5 and Zoom = 67%

Bisection:
Bug 1887837 - Enable quad conic gradients when the GPU is used. r=gw

Conic gradients are too slow on swgl, we have to add support for caching them. Meanwhile, enable the code path when swgl is disabled.

Differential Revision: https://phabricator.services.mozilla.com/D212242

Comment 1

[Mayank Bansal]

Attachment: testcase.html

Comment 2

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

:nical, since you are the author of the regressor, bug 1887837, could you take a look? Also, could you set the severity field?

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Comment 3

[Francesco Lodolo [:flod]]

Is this a duplicate of bug 1918923?

Comment 4

[Mayank Bansal]

Probably.
Id prefer to keep this bug open for now. If/when the other bug gets fixed i will retest and close as dupe.

Comment 5

[Nicolas Silva [:nical]]

(In reply to Francesco Lodolo [:flod] from comment #3)

Is this a duplicate of bug 1918923?

Sounds likely. Let's revisit once bug 1918923 is fixed, as Mayank suggested.

Comment 6

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

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

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Comment 7

[Mayank Bansal]

Fixed by bug 1918923.
Marking as dupe.