1882687 - Modified Canvas demo is slower in Nightly (d2d/gpu/skia) compared to Chrome

Status: RESOLVED WORKSFORME

(Core :: Graphics: Canvas2D, defect)

Description

[Mayank Bansal]

Open the attached slightly modified testcase (original at: https://codepen.io/Dillo/pen/jOJvwam?editors=0110)
Enter "4000" into the Target Width box
Click somewhere inside the demo

AR:

skia-canvas: https://share.firefox.dev/4c8V8SH (7s)
gpu-canvas (29Feb2024): https://share.firefox.dev/3UWNzbg (4.5s)
d2d-canvas: https://share.firefox.dev/3uUAq87 (2.5s)
Chrome: https://share.firefox.dev/48upcFf (felt almost instant)

ER: As fast as Chrome please

Comment 1

[Mayank Bansal]

Attachment: index.html

Comment 2

[Mayank Bansal]

Attachment: about:support

Comment 3

[Mayank Bansal]

at higher (8000, 10000) values of Target Width, the difference is starker:

8000
D2d-canvas: https://share.firefox.dev/49yHhDf (19s)
chrome: https://share.firefox.dev/3wBy6U7 (5s)
Gpu-canvas: https://share.firefox.dev/48zsEy7 (gave up after 2m20s)

But overall, i think that the impact of this bug is low.

Comment 4

[Teodor Tanasoaia [:teoxoy]]

Should this also block 1741501?

Comment 5

[Lee Salzman [:lsalzman]]

Nope

Comment 6

[Mayank Bansal]

Subjectively feels smooth now.