[Webkit-unassigned] [Bug 255734] New: Svg masks are rendered with the wrong resolution
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Apr 20 10:13:06 PDT 2023
https://bugs.webkit.org/show_bug.cgi?id=255734
Bug ID: 255734
Summary: Svg masks are rendered with the wrong resolution
Product: WebKit
Version: Safari 16
Hardware: All
OS: All
Status: NEW
Severity: Normal
Priority: P2
Component: Layout and Rendering
Assignee: webkit-unassigned at lists.webkit.org
Reporter: jespertheend at gmail.com
CC: bfulgham at webkit.org, simon.fraser at apple.com,
zalan at apple.com
https://svg-mask-resolution.glitch.me/
The above page displays three circles:
1. A normal black <ellipse>
2. A red <rect> with an <ellipse> set via mask="url(#myMask)"
3. Same as #2 but in front of a regular black <ellipse>
On non high dpi displays, this page is the same in all browsers.
But when viewed on a high dpi display, or when zooming in (either via pinch zoom or Cmd +/-) the masks are not rendered with the correct resolution.
For the circle in the middle this can be seen by the jagged edges.
The right circle suffers from the same issue, but here it is even worse because now the black edge around it is much more visible.
Note that the black edge is also visible in other browsers, but in safari it is much more noticable due to this issue.
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