[Webkit-unassigned] [Bug 257358] New: REGRESSION (264433 at main): Drawing small images becomes slower

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=257358

            Bug ID: 257358
           Summary: REGRESSION (264433 at main): Drawing small images becomes
                    slower
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: sabouhallawa at apple.com

264433 at main made RenderBoxModelObject::decodingModeForImageDraw() call RenderElement::imageVisibleInViewport() for all images including the small ones which do not require async image decoding unless the attribute decoding="async" is specified.

This regressed the score of the MotionMark Leaves sub-test by almost 2.5%.

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