[Webkit-unassigned] [Bug 232814] New: Cocoa GraphicsContext copies ImageBuffer data to temporary buffer when accelerated ImageBuffer is drawn to bitmap context

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232814

            Bug ID: 232814
           Summary: Cocoa GraphicsContext copies ImageBuffer data to
                    temporary buffer when accelerated ImageBuffer is drawn
                    to bitmap context
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kkinnunen at apple.com
                CC: dino at apple.com
        Depends on: 231471

Cocoa GraphicsContext copies ImageBuffer data to temporary buffer when accelerated ImageBuffer is drawn to bitmap context


This happens for example when a ImageBitmap is transferred from GPUP to WP.

IOSurface::createImage creates an image that will always copy the image data, even though it should be accessible from the IOSurface in most cases.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=231471
[Bug 231471] REGRESSION (iOS 15, GPU Process): Fails to load texture map
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