Fill-rate benchmark

Measures the real per-frame cost on this GPU across render-mode × density × DPR — the fill-rate half the Node suite can't see. Each config runs the live field for ~2 s and samples requestAnimationFrame deltas. Green ≥55 fps · amber 30–55 · red <30.

Display DPR: ? · lower dprCap rows show the DPR lever.

Run sweep Run compositing sweep

Compositing sweep — the mix-blend / dual-canvas layer

Drives the real <field-root> (the homepage path): a dots field plus the optional full-viewport mix-blend-mode: screen grid overlay. If overlay=grid at dprCap 2 tanks fps and dprCap 1 recovers it, the homepage's frame budget is compositing — and the DPR lever is real (validates the default drop).