Devlog — 2026-10-07

The compiled engine stays within 1.04–1.23× of the hand-written reference across mesh extraction, frame passes, and CPU physics.
Extraction started about 100× slower than the reference. It was rewritten: corners are computed once per block and shared with neighbors from global indices.
Extraction leaves zero holes at every cell size. The reference leaves 10 at 1 cm. A hole is a missing quad where a neighboring cell has no vertex.
41 million corners shared between blocks were checked. Every corner holds one value, whichever block wrote it.
At 60 Hz in the browser, 0 of 599 frames missed the 16.7 ms deadline. The worst frame took 15.5 ms. The median took 10 ms. Level of detail and the simulation ran throughout.
One simulation step for all 40 grazers takes 1.4 ms at the 99th percentile. The budget is 4 ms. A steady step allocates nothing.
The simulation is deterministic across hosts. One hash sequence covers 10,000 steps on native, under Rosetta, and in Chrome at 30, 60, and 144 fps.
A key press reaches the screen in 16 ms at the median and 27 ms at the 99th percentile.