[Webkit-unassigned] [Bug 201412] New: [FTW] Cache Gradients in the WebContent process

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201412

            Bug ID: 201412
           Summary: [FTW] Cache Gradients in the WebContent process
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bfulgham at webkit.org

Profiling shows that creating Gradient brushes are one of the highest remaining hot spots in MotionMark runs, especially in Suits.

This benchmark ends up applying one of a set of gradients to different elements, and creating and destroying these gradient brushes each time we paint is hugely wasteful.

This patch adds a local cache to the Direct2D Gradient object that caches the constructed gradient.

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