[webkit-changes] [WebKit/WebKit] 3e47e6: REGRESSION(263118 at main): [CoordinatedGraphics] Inc...

[Carlos Garcia Campos]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 3e47e6d0c366be710c81c8b594d0aa33d1096400
      https://github.com/WebKit/WebKit/commit/3e47e6d0c366be710c81c8b594d0aa33d1096400
  Author: Carlos Garcia Campos <cgarcia at igalia.com>
  Date:   2023-08-29 (Tue, 29 Aug 2023)

  Changed paths:
    M Source/WebKit/UIProcess/CoordinatedGraphics/DrawingAreaProxyCoordinatedGraphics.cpp
    M Source/WebKit/UIProcess/CoordinatedGraphics/DrawingAreaProxyCoordinatedGraphics.h
    M Source/WebKit/UIProcess/DrawingAreaProxy.messages.in
    M Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.cpp
    M Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.h
    M Source/WebKit/WebProcess/WebPage/DrawingArea.h
    M Source/WebKit/WebProcess/WebPage/DrawingArea.messages.in

  Log Message:
  -----------
  REGRESSION(263118 at main): [CoordinatedGraphics] Incomplete rendering after 10s inactivity without hardware acceleration
https://bugs.webkit.org/show_bug.cgi?id=260505

Reviewed by Michael Catanzaro.

When the backing store is discarded in the UI process we need to notify
the web process to reset the dirty region to the entire web view and
ensure next update is not partial. This avoids flickering and ensures a
full update of the view when a new backing store is created. We should
also avoid flickering when forcing an update, by waiting for the Update
message synchronously.

* Source/WebKit/UIProcess/CoordinatedGraphics/DrawingAreaProxyCoordinatedGraphics.cpp:
(WebKit::DrawingAreaProxyCoordinatedGraphics::paint):
(WebKit::DrawingAreaProxyCoordinatedGraphics::forceUpdateIfNeeded):
(WebKit::DrawingAreaProxyCoordinatedGraphics::incorporateUpdate):
(WebKit::DrawingAreaProxyCoordinatedGraphics::enterAcceleratedCompositingMode):
(WebKit::DrawingAreaProxyCoordinatedGraphics::discardBackingStore):
* Source/WebKit/UIProcess/CoordinatedGraphics/DrawingAreaProxyCoordinatedGraphics.h:
* Source/WebKit/UIProcess/DrawingAreaProxy.messages.in:
* Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.cpp:
(WebKit::DrawingAreaCoordinatedGraphics::updateGeometry):
(WebKit::DrawingAreaCoordinatedGraphics::didDiscardBackingStore):
* Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.h:
* Source/WebKit/WebProcess/WebPage/DrawingArea.h:
(WebKit::DrawingArea::didDiscardBackingStore):
* Source/WebKit/WebProcess/WebPage/DrawingArea.messages.in:

Canonical link: https://commits.webkit.org/267399@main