RESOLVED FIXED256621
Mask back to front buffer copy when using remote rendering path 
https://bugs.webkit.org/show_bug.cgi?id=256621
Summary Mask back to front buffer copy when using remote rendering path
Ben Nham
Reported 2023-05-10 16:52:37 PDT
When comparing QuartzCore's implementation of back to front buffer copies to our implementation of the copy in RemoteLayerBackingStore, there are two optimizations that we are missing. First, QuartzCore masks the back to front buffer copy by the dirty shape. Secondly, it avoids re-clearing a surface that was just allocated. Implement these optimizations in RemoteLayerBackingStore to see if they improve our memory bandwidth regression.
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Radar WebKit Bug Importer
Comment 1 2023-05-10 16:52:56 PDT
<rdar://problem/109179068>
Ben Nham
Comment 2 2023-05-10 16:57:06 PDT
Pull request: https://github.com/WebKit/WebKit/pull/13729
Matt Woodrow
Comment 3 2023-05-11 13:59:28 PDT
Pull request: https://github.com/WebKit/WebKit/pull/13770
EWS
Comment 4 2023-05-11 18:11:55 PDT
Committed 263994@main (c26d9ad7d08d): <https://commits.webkit.org/263994@main> Reviewed commits have been landed. Closing PR #13770 and removing active labels.
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