[Webkit-unassigned] [Bug 257173] New: MachSendRights can release their IOSurface use-counts before CA adds a new ones
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon May 22 17:23:46 PDT 2023
https://bugs.webkit.org/show_bug.cgi?id=257173
Bug ID: 257173
Summary: MachSendRights can release their IOSurface use-counts
before CA adds a new ones
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
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
CoreAnimation doesn't add a new use-count to CAIOSurfaces until the transaction is committed, which is after the MachSendRight (inside LayerTreeTransaction/RemoteLayerBackingStoreProperties) is destroyed.
We should run an explicit CATransaction for layer tree commits to ensure that we always have a use-count added.
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