What you're running
Five Signature scenes (WebGL2, three.js loads only when you open one) and the eight Classic effects from v1 (Canvas 2D). These are the exact renderers the benchmark measures, minus the measurement — no ramp, no frame-time windows, no score. Hover a Classic tile and it animates in place; click any tile for fullscreen.
The knobs
Every scene opens with three controls in the bottom strip:
| Control | What it does |
|---|---|
| load | Particle count, log-scaled between the scene's own floor and ceiling — the same ladder the benchmark climbs |
| speed | Simulation rate, 0.1×–2×. Slow-motion costs nothing; it's the same work per frame |
| scale | Render resolution, 0.5×–2× of native. Above 1× is supersampling — a fill-rate stress test |
The fps readout is live, so the gallery doubles as a manual stress test: max the load on Nebula Drift and watch what your GPU is made of. For a number you can compare, run the scored benchmark — same scenes, fixed workload, published methodology.