[webkit-changes] [WebKit/WebKit] b1bfde: REGRESSION(271747 at main): [Win][GPUP] Rendering art...

[Fujii Hironori]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: b1bfde1c5473b914bde5413fd0fe63c33e71f4d8
      https://github.com/WebKit/WebKit/commit/b1bfde1c5473b914bde5413fd0fe63c33e71f4d8
  Author: Fujii Hironori <Hironori.Fujii at sony.com>
  Date:   2023-12-11 (Mon, 11 Dec 2023)

  Changed paths:
    M LayoutTests/platform/wincairo/TestExpectations
    M Source/WebKit/WebProcess/WebPage/wc/DrawingAreaWC.cpp

  Log Message:
  -----------
  REGRESSION(271747 at main): [Win][GPUP] Rendering artifact of repainting a window
https://bugs.webkit.org/show_bug.cgi?id=266165

Reviewed by Kimmo Kinnunen.

After 271747 at main removed RemoteImageBufferProxy::createFlusher
implementation, repainting a window caused a rendering artifact for
non-AC mode of Windows port.

Use syncronous ImageBuffer::flushDrawingContext intead of asyncronous
flushDrawingContextAsync for non-AC mode.

In AC mode, the compositor is running in GPU process on Windows port.
They don't need to wait for RemoteImageBuffer flush because the flush
finishes when a message to the compositor arrives at GPU process.

* LayoutTests/platform/wincairo/TestExpectations:
* Source/WebKit/WebProcess/WebPage/wc/DrawingAreaWC.cpp:

Canonical link: https://commits.webkit.org/271892@main