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[dash contest] Parabellum - #268

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Prag-designs:parabellum-contest

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@Prag-designs Prag-designs commented Oct 26, 2026 •

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App: Parabellum
Category: Rive
Folder: dash-apps/contest/prag-designs-parabellum/ (parabellum.riv, about 680 KB, plus its source in src/)

Parabellum is an instrument cluster poured from liquid: pink neon through glass. Two open ribbons curve around the car like glass tubes, speed on the left and power on the right. The liquid rises with the reading, sloshes when it changes fast and carries rising bubbles. Over the limit the speed liquid boils hot red; in regen the power liquid turns lavender and flows back. The big numbers pulse on every change and glow pink while you accelerate. Between the ribbons: your car from above with lane marks at your speed, the blind-spot neighbour, the limit sign, a traffic light, the battery and the gear. Everything is native Rive on DashViewModel; a scripted layout adds the WGSL liquid pass. Without GPU Canvas the native dash still shows every reading.

Tested in DashPilot on Android (OnePlus 12R, 2780×1264 landscape) with the Demo data source, with GPU Canvas on through the Developer setting from #267 and with it off. Also checked in the Rive web runtime.

Demo recording (DashPilot app on Android, Demo data source, GPU Canvas on, 62 s, includes a turn signal, the blind-spot car and regen):

parabellum-demo-pr.mp4

wpmed OK'd more than one entry per person in Discord, so this is my second entry next to #266 (Felina).

Fonts: Chakra Petch and Inter (SIL OFL 1.1). The car image was generated with an OpenAI image model (no photograph or logo). Full credits in the README.

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