[Webkit-unassigned] [Bug 235106] New: Rendering/clipping glitches using mix-blend mode

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=235106

            Bug ID: 235106
           Summary: Rendering/clipping glitches using mix-blend mode
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Mac (Intel)
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jaffathecake at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

https://static-misc-3.glitch.me/composite-test/mix-blend-mode.html

This is two layers which cross-fade using `mix-blend-mode: plus-lighter`.

In the first example, only the top layer has `mix-blend-mode: plus-lighter`. In the second example, both layers have `mix-blend-mode: plus-lighter`.

In the first example, the tail of the 'd' remains even though the element has opacity: 0. In the second example, the tail of the 'd' is cut off.

This bug isn't only caused by `plus-lighter`, other blend modes also seem to cause graphical glitches.

Video of issue: https://youtu.be/XsmyCzj57UU

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20220112/0366c54b/attachment.htm>