REOPENED312532
RemoteImageBufferGraphicsContext::drawImageBuffer continually reallocate buffers 
https://bugs.webkit.org/show_bug.cgi?id=312532
Summary RemoteImageBufferGraphicsContext::drawImageBuffer continually reallocate buffers
Matt Woodrow
Reported 2026-04-16 18:26:39 PDT
RemoteImageBufferGraphicsContext::drawImageBuffer uses a temporary buffer when it detects a self-copy. If there are many of these, it pays the cost for allocating over and over. We should cache a single buffer to be reused, and free it if isn't used for a while.
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Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2026-04-16 18:26:45 PDT
<rdar://problem/174969976>
Matt Woodrow
Comment 2 2026-04-16 18:30:38 PDT
Pull request: https://github.com/WebKit/WebKit/pull/62942
EWS
Comment 3 2026-04-17 17:50:40 PDT
Committed 311500@main (61c4954ff80a): <https://commits.webkit.org/311500@main> Reviewed commits have been landed. Closing PR #62942 and removing active labels.
Mike Wyrzykowski
Comment 4 2026-04-28 09:58:33 PDT
Reopened Bugzilla. Magenta blocks on all blocks on YouTube video page, tracking revert in https://bugs.webkit.org/show_bug.cgi?id=313553.
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