[Webkit-unassigned] [Bug 241450] New: Don't allocate device pixel ratio scaled backing stores for layers that contain only unscaled bitmap content

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jun 8 22:30:46 PDT 2022


https://bugs.webkit.org/show_bug.cgi?id=241450

            Bug ID: 241450
           Summary: Don't allocate device pixel ratio scaled backing
                    stores for layers that contain only unscaled bitmap
                    content
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattwoodrow at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    webkit-bug-importer at group.apple.com, zalan at apple.com

For layers that contain only unscaled bitmap content (like a canvas or image), then we don't need to allocate a device pixel ratio scaled backing store, since it's pointlessly upscaling.

<rdar://89515405>

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