Files
lightcraft/crates/raw/src
Andrew FrahnandClaude Opus 5.5 ab240d6ece Perf: hue/saturation tables skip the sRGB round trip and fmodf in their per-pixel path
HsvTable::apply took the value through linear -> sRGB -> linear even when the table's value
scale is 1 (every hue/saturation-only table, as fitted camera looks are), and wrapped hues with
rem_euclid (an fmodf call) three times per pixel. The value is now kept as it is for a unit
scale and the sRGB-encoded value is reused otherwise; hues are wrapped by a helper that equals
rem_euclid bit for bit (tested) without the call for values within one period.

2048 px render of a 24 MP ARW, single thread: 16.4 -> 15.1 G instructions, 4.94 -> 4.76 G cycles.

Sources: own design.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-11 19:30:29 +11:00
..
2026-10-09 20:34:54 -04:00
2026-10-10 03:47:10 -04:00