Reverts "[Impeller] disable blending in gaussian intermediate steps. (#51118)" #51244
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…144743) flutter/engine@4f6ea31...8a859c5 2024-03-07 skia-flutter-autoroll@skia.org Manual roll Dart SDK from 9ea8813ab4d4 to 3ad64881a209 (5 revisions) (flutter/engine#51242) 2024-03-06 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] disable blending in gaussian intermediate steps. (#51118)" (flutter/engine#51244) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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Reverts: #51118
Initiated by: jonahwilliams
Reason for reverting: unexpected performance change
https://flutter-flutter-perf.skia.org/e/?queries=sub_result%3D90th_percentile_frame_rasterizer_time_millis%26sub_result%3D99th_percentile_frame_rasterizer_time_millis%26sub_result%3Daverage_frame_rasterizer_time_millis%26sub_result%3Dworst_frame_rasterizer_time_millis%26test%3Dbackdrop_filter_perf_ios__timeline_summary&selected=commit%3D39677%26name%3D%252Carch%253
Original PR Author: jonahwilliams
Reviewed By: {gaaclarke}
This change reverts the following previous change:
Noticed this while working on the StC debugging. We can disable blending on all intermediate gaussian steps. I don't know how much of an impact this has in practice.