242970 2022-07-20 17:07:51 -0700 RenderBox::determineBackgroundBleedAvoidance returns BackgroundBleedUseTransparencyLayer for cases of no bleeding without taking background-clip:content-box into account 2022-07-27 17:08:15 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=65906 InRadar P2 Normal --- 1 fujii webkit-unassigned bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 1885498 0 461061 fujii 2022-07-20 17:07:51 -0700 Created attachment 461061 test case RenderBox::determineBackgroundBleedAvoidance returns BackgroundBleedUseTransparencyLayer for cases of no bleeding without taking background-clip:content-box into account In the test case, RenderBox::paintBoxDecorations doesn't need to begin a transparency layer because the background and borders don't intersect. However, RenderBox::determineBackgroundBleedAvoidance returns BackgroundBleedUseTransparencyLayer because it's always assuming background-clip:border-box. 1887203 1 webkit-bug-importer 2022-07-27 17:08:15 -0700 <rdar://problem/97692182> 461061 2022-07-20 17:07:51 -0700 2022-07-20 17:07:51 -0700 test case a.html text/html 276 fujii PCFET0NUWVBFIGh0bWw+CjxodG1sPgogIDxzdHlsZT4KICAgIGRpdiB7CiAgICAgICAgd2lkdGg6 IDEwMHB4OwogICAgICAgIGhlaWdodDogMTAwcHg7CiAgICAgICAgYmFja2dyb3VuZDogZ3JlZW47 CiAgICAgICAgYm9yZGVyOiAzcHggZG90dGVkIHJlZDsKICAgICAgICBib3JkZXItcmFkaXVzOiAy MHB4OwogICAgICAgIHBhZGRpbmc6IDMwcHg7CiAgICAgICAgYmFja2dyb3VuZC1jbGlwOiBjb250 ZW50LWJveDsKICAgIH0KICA8L3N0eWxlPgogIDxkaXY+PC9kaXY+CjwvaHRtbD4K