TD-4 asked for the measurement as well as the change, and this is it: 25.05 ms
to 4.17 ms at 3840 x 2160, six times faster, with clarity no longer dominating
the neighbourhood stage it used to be 97% of.
Measured before and after on the same machine and the same adapter minutes
apart, baseline at the branch's merge-base, so the only variable is the change.
That adapter is not the RTX 3050 the rest of this document was measured on, so
the new table says to read it on its own rather than against the ones above —
the before/after is comparable, the absolute figures are not, and quietly
replacing the existing tables would have changed the instrument.
Also recorded: the declared halo is now quantised to multiples of the output
scale, because the 2-sigma truncation rounds on the reduced grid. 29 px becomes
28 at 1920x1200 and 38 becomes 40 at 2560x1600. It is inside what the cross-form
test holds — 0.03 stops of peak, 2% of reach — but it is a change in reach and
not only in cost, and a tile scheduler would be handed it. Better written down
now than found later as a seam.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
dtourolleandClaude Opus 5
8b251b84a0