Bug 85677

Summary:	[chromium] Implement order-dependent damage tracking
Product:	WebKit	Reporter:	Shawn Singh <shawnsingh>
Component:	Layout and Rendering	Assignee:	Shawn Singh <shawnsingh>
Status:	RESOLVED WONTFIX
Severity:	Normal	CC:	enne, piman
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified

Description Shawn Singh 2012-05-04 15:38:48 PDT

https://bugs.webkit.org/show_bug.cgi?id=85421 was a quick-fix for a bug where changes in sibling stacking order was not causing damage.

The solution in that patch was to consider stacking-order changes as "property changes" on layers.  However, this is not an ideal clean correct design.  The better design is for damage tracker to actually track changes in an order-dependent manner (assuming it turns out to be practical).

Indeed, the damage tracker is already assuming order-dependence (expanding damage due to filters assumed the layer list is already sorted in back-to-front drawing order).

Comment 1 Shawn Singh 2013-04-10 13:33:08 PDT

moved this bug to https://code.google.com/p/chromium/issues/detail?id=230050