Two whole-image passes per frame out of the CPU spot finder (the pre-scan's
finder on every build, and every image on the CPU-only build):
- AccumulateRings ran three passes over the frame - the plain ring statistics
and two sigma clips. The plain pass now also counts each ring's valid
values in a histogram (0..1023, the rest in a short list), and the clip
passes sum over the distinct values: each meets the same float test its
pixels would, and the sums are integers, so the totals are the same.
- The local test's first pass is read by DetectAt only inside a candidate's
window. It now marks the row/32-column blocks those windows reach and
keeps its sliding sums everywhere but skips the per-pixel test elsewhere;
the bits it leaves unset are never read.
md5-identical output on four sets (GPU) and three (CPU-only). CPU-only
16M: 203 -> 177 s and 303 -> 263 s; GPU 16M 23.8 -> 22.8 s (the pre-scan's
finder).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D1G8gJVAy6gp1K5Dz3NE5C
leonarski_fandClaude Opus 5.5
87cfc879b6