RESOLVED FIXED301434
[HDR] Enable the feature flag HDRAcceleratedApplyGainMapEnabled 
https://bugs.webkit.org/show_bug.cgi?id=301434
Summary [HDR] Enable the feature flag HDRAcceleratedApplyGainMapEnabled
Said Abou-Hallawa
Reported 2025-10-24 10:09:43 PDT
Because of sandboxing, accelerated image decoding is disallowed. Applying the HDR gain map in the unaccelerated code path is inherently slow. Moving the HDR gain map from WebProcess to GPUProcess and applying it to the SDR image there should benefit from using the accelerated code path.
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Radar WebKit Bug Importer
Comment 1 2025-10-24 10:10:51 PDT
<rdar://problem/163349653>
Said Abou-Hallawa
Comment 2 2025-10-24 11:21:40 PDT
Pull request: https://github.com/WebKit/WebKit/pull/44240
Said Abou-Hallawa
Comment 3 2025-10-24 11:36:58 PDT
Pull request: https://github.com/WebKit/WebKit/pull/52966
Said Abou-Hallawa
Comment 4 2026-04-15 10:53:38 PDT
rdar://157871315
Said Abou-Hallawa
Comment 5 2026-05-08 17:56:08 PDT
Let's make this bug just for enabling the feature flag HDRAcceleratedApplyGainMapEnabled. The remaining work is tracked by bug 314452.
Said Abou-Hallawa
Comment 6 2026-05-09 10:41:10 PDT
Pull request: https://github.com/WebKit/WebKit/pull/64616
EWS
Comment 7 2026-05-15 16:39:12 PDT
Committed 313341@main (02ee8d8ba70b): <https://commits.webkit.org/313341@main> Reviewed commits have been landed. Closing PR #64616 and removing active labels.
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