[Webkit-unassigned] [Bug 284976] New: Add a feature flag for remote snapshotting
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Dec 19 14:30:20 PST 2024
https://bugs.webkit.org/show_bug.cgi?id=284976
Bug ID: 284976
Summary: Add a feature flag for remote snapshotting
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: New Bugs
Assignee: webkit-unassigned at lists.webkit.org
Reporter: sabouhallawa at apple.com
Currently snapshotting a page to an image or a PDFDocument has to go through this IPC workflow: UIProcess -> WebProcess -> UIProcess. After 288113 at main and with site isolation enabled, snapshotting will go through the following IPC workflow: UIProcess -> WebProcess -> GPUProcess -> UIProcess. So any WebProcess can't see the drawing of the other WebProcesses.
To address the review comment https://github.com/WebKit/WebKit/pull/37756#discussion_r1891010340, a new feature flag will be introduced to allow testing the remote snapshotting separate from the site isolation. If site isolation is enabled, the main frame has to compose itself with all the remote iframes to get the correct snapshotting. This will be done in future patches.
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