Deterministic Inverse-square cosine Lambertian bounce illuminance + ambient contrast ratio ACR = (L_on + R_amb*E_lux/pi) / (L_off + R_amb*E_lux/pi) engine (.svg, .pdf, .json) built for BenQ, Elgato, Aputure, MediaLight — zero-upload ephemeral Wasm RAM execution.
Running ephemeral Wasm verification…