Bug 125804

Summary:	[CSS Blending] Background color isn't fully painted when having a blended child
Product:	WebKit	Reporter:	Ryosuke Niwa <rniwa>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED INVALID
Severity:	Normal	CC:	cabanier, mihnea, mitica, simon.fraser
Priority:	P2	Keywords:	BlinkMergeCandidate
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	95614

Description Ryosuke Niwa 2013-12-16 14:43:03 PST

Consider merging https://chromium.googlesource.com/chromium/blink/+/3b9e71135ee5f6bfe19581a4b19790cde588bd2c
if it's applicable to WebKit.

The problem seems to be the creation of a transparency layer while
painting the background. The solution is to prevent any form of isolation
caused by blending when painting the root element.

Comment 1 Mihai Tica 2013-12-17 00:15:26 PST

(In reply to comment #0)
> Consider merging https://chromium.googlesource.com/chromium/blink/+/3b9e71135ee5f6bfe19581a4b19790cde588bd2c
> if it's applicable to WebKit.
> 
> The problem seems to be the creation of a transparency layer while
> painting the background. The solution is to prevent any form of isolation
> caused by blending when painting the root element.

This issue is related to mix-blend-mode for software, which isn't currently implemented in WebKit. Since it's not applicable to WebKit,  we should probably close this

Comment 2 Mihnea Ovidenie 2014-03-04 04:30:59 PST

Chromium specific issue.