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NetterSilverandClaude Opus 5.5
93487af3b3
- RawImage::develop demosaics only the default crop with AHD when there is no OpcodeList3 (ahd_window), instead of demosaicing the margin too and then copying the crop out of the full picture on one thread. - Gpu::upload writes through queue.write_buffer_with and copies into the staging buffer in parallel parts. create_buffer_init zeroed a staging buffer and then copied over it, two single-threaded passes over a full-size photo's ~290 MB. - finish_and_read copies the mapped readback out in parallel parts (one thread read the 91 MB of a 24 MP export at ~2 GB/s, ~45 ms). Output is byte-identical (ahd_window_is_the_crop_of_the_whole, uploads_read_back_exactly). Export of a 24 MP ARW to full-size JPEG (examples/export_bench, 75 interleaved runs each on a shared 16-thread Ryzen): main 802 ms median / 614 ms min -> this branch 647 / 525 (-19.3% / -14.5%). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>