RESOLVED FIXED314452
[HDR] Use accelerated backing stores to apply the gain-map image in GPUProcess 
https://bugs.webkit.org/show_bug.cgi?id=314452
Summary [HDR] Use accelerated backing stores to apply the gain-map image in GPUProcess
Said Abou-Hallawa
Reported 2026-05-08 17:55:34 PDT
Because of sandboxing, accelerated image decoding is disallowed in WebContent process. Applying the gain-map in the unaccelerated code path is inherently slow. Serializing the gain-map image from WebProcess to GPUProcess and applying it to the base image there should benefit from using the accelerated backing stores.
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Radar WebKit Bug Importer
Comment 1 2026-05-08 17:55:39 PDT
<rdar://problem/176605566>
Radar WebKit Bug Importer
Comment 2 2026-05-08 17:57:45 PDT
<rdar://problem/176605720>
Said Abou-Hallawa
Comment 3 2026-05-08 18:15:14 PDT
Pull request: https://github.com/WebKit/WebKit/pull/64591
EWS
Comment 4 2026-05-15 16:15:35 PDT
Committed 313339@main (479c91177422): <https://commits.webkit.org/313339@main> Reviewed commits have been landed. Closing PR #64591 and removing active labels.
Said Abou-Hallawa
Comment 5 2026-05-15 16:36:24 PDT
<rdar://problem/176605566>
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