[Webkit-unassigned] [Bug 49135] New: Optimize painting to avoid rendering areas that are completely obscured by other elements

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=49135

           Summary: Optimize painting to avoid rendering areas that are
                    completely obscured by other elements
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com
                CC: hyatt at apple.com, mitz at webkit.org


Painting is currently back-to-front, even across iframe boundaries. That means that if an area of some foreground element is invalidated, we'll repaint everything behind it (potentially including expensive gradients, scaled background images etc) before painting the element itself. This could be optimized.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.