NEW 190088
Optimize layouts after style changes that only require painting order changes 
https://bugs.webkit.org/show_bug.cgi?id=190088
Summary Optimize layouts after style changes that only require painting order changes
Simon Fraser (smfr)
Reported 2018-09-28 14:03:11 PDT
Currently we trigger layouts when opacity, filters, blend modes etc change, but these really only need updates to the z-order hierarchy and painting-related things. We should make this a new kind of StyleDifference. Also, there may be properties now that we claim should only trigger repaints, but really need to do z-order updates (like z-index).
Attachments
Add attachment proposed patch, testcase, etc.
Note You need to log in before you can comment on or make changes to this bug.