Webgpu ink marbling

1 test · 1 finished runs (1 agent, 0 raw one-shot) · 1 live demo

The prompt

Build a single-file WebGPU (with WebGL2 fallback) paper-marbling simulator (ebru / suminagashi). Users drop ink colors onto a water surface, then drag combs and styluses to rake the ink into feathered and peacock patterns, using a real-time 2D fluid solver (advection + pressure projection) on the GPU. Include 6 ink colors, comb/stylus/drop tools, a 'press paper' button that freezes the pattern into a printed sheet with paper texture, and an IDLE AUTO-PLAY mode that drops ink and rakes classic patterns on its own when untouched for 5 seconds. Target 60 fps at 1080p. Output one index.html, no external assets. Save the main page as index.html in the current directory (plus any local asset files you create), with no build step. You may serve it locally and open it in headless chromium (/usr/bin/chromium, software WebGL, no GPU, no WebGPU) to screenshot and inspect your own output, and iterate on your own before finishing. Close any browser you open as soon as you've taken your screenshot. Finish with a short README.md describing the controls.