1202275 - Bad rendering of linear gradient when zoomed out

Status: NEW

(Core :: Graphics, defect)

Description

[Daniel]

Attachment: linear-gradient-zoom.html

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20150905030205

Steps to reproduce:

View attached testcase and zoom out the page.

The background of the div is a linear gradient with a repeating 1px line.


Actual results:

The rendering of the linear gradient background is wrong. 

Interestingly the issue is visible on http://lea.verou.me/css3patterns/#blueprint-grid but not on http://lea.verou.me/css3patterns/#lined-paper .

Comment 1

[Daniel]

Attachment: screenshot.png

Comment 2

[Daniel]

Attachment: about-support-graphics.txt

I have a Intel/AMD switchable graphics setup, and I can only reproduce the issue using the Intel graphics. I attached the graphics section of about:support. It looks like all HW acceleration is turned off for this configuration.

With the other GPU, the behavior is the same as in Edge (the lines disappear).

Comment 3

[[:Towkir] Ahmed]

Reproduced on latest nightly and devEdition. both of them renders correctly when the page is zoomed at 90%

Comment 4

[Kartikaya Gupta (email:[e-mail])]

"Panning and Zooming" refers to a different kind of zooming (pinch zoom on mobile); moving this to Graphics.

Comment 5

[[:Towkir] Ahmed]

I was thinking about graphics though. Thanks for re-correcting :)