Bug 58052

Summary:	REGRESSION (WebKit2): Accelerated compositing happens on the main thread on Windows
Product:	WebKit	Reporter:	Adam Roben (:aroben) <aroben>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	cmarrin, simon.fraser
Priority:	P2	Keywords:	InRadar, PlatformOnly, Regression
Version:	528+ (Nightly build)
Hardware:	PC
OS:	Windows 7

Description Adam Roben (:aroben) 2011-04-07 09:54:10 PDT

In WebKit2 on Windows, accelerated compositing happens on the main thread. This means that pauses on the main thread can result in stuttering animation (e.g., bug 57956).

We should move compositing off the main thread so that it isn't affected by the business of the main thread. This is how accelerated compositing works in WebKit1, and on Mac.

Comment 1 Adam Roben (:aroben) 2011-04-07 09:54:22 PDT

*** Bug 57956 has been marked as a duplicate of this bug. ***

Comment 2 Adam Roben (:aroben) 2011-04-07 09:59:57 PDT

<rdar://problem/9249835>

Comment 3 Adam Roben (:aroben) 2011-06-01 11:39:35 PDT

This will be fixed by the fix for bug 58054.

*** This bug has been marked as a duplicate of bug 58054 ***