1335613 - SVG rendering bug -- weird pixels in antialiasing

Status: RESOLVED WORKSFORME

(Core :: SVG, defect, P3)

Description

[Bart Nagel]

Attachment: render-bug.svg

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20161114144739

Steps to reproduce:

View the attached SVG in Firefox at various zoom levels.


Actual results:

Some pixels in the greyscale areas, where Firefox is trying to antialias the shapes since they don't fall on exact pixels, have a very wrong colour.

See https://i.imgur.com/w6i1dFE.png for screenshots -- Firefox 50 on Linux above, Chrome below.

Zoomed in to 8x with nearest-neighbour: https://i.imgur.com/MvlYIMA.png

All five zoom levels in Firefox exhibit the bug, though it's most obvious in the 200% view (top right).


Expected results:

Smooth sharp lines, though obviously with some anti-aliasing, like the results in Chrome.

The SVG renders fine in the Gnome image viewer, in Inkscape, and in Chrome.

Comment 2

[ovvv]

I cannot reproduce this on Firefox 134.0.1.

Comment 3

[Bart Nagel]

Yes, it appears to have been fixed at some point.