Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 4c9488d0b271fbf1a0340d8ad8032884380934da
https://github.com/WebKit/WebKit/commit/4c9488d0b271fbf1a0340d8ad8032884380934da
Author: Matt Woodrow <[email protected]>
Date: 2025-09-30 (Tue, 30 Sep 2025)
Changed paths:
M
Source/WebKit/Shared/RemoteLayerTree/RemoteLayerWithRemoteRenderingBackingStore.mm
Log Message:
-----------
REGRESSION(297365@main): ASSERT(m_receivers.isEmpty()) when debugging Web
process with show layer borders enabled
https://bugs.webkit.org/show_bug.cgi?id=299905
<rdar://problem/161688599>
Reviewed by Simon Fraser.
This happens when RemoteLayerWithRemoteRenderingBackingStore::prepareToDisplay
tells the buffer set that the dirty region is empty, and then
dirtyRepaintCounterIfNecessary adds new dirty area.
If the GPU process doesn't prepare a remote graphics context receiver, but the
web process tries to draw anyway, we hit an assertion.
Fix by adding the repaint counter dirty area first.
*
Source/WebKit/Shared/RemoteLayerTree/RemoteLayerWithRemoteRenderingBackingStore.mm:
(WebKit::RemoteLayerWithRemoteRenderingBackingStore::prepareToDisplay):
Canonical link: https://commits.webkit.org/300789@main
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