Fly an FPV drone through a desert canyon, raymarched in the browser

Exactly what the creator used

Claude Code

Any recent version

Node.js

Any recent version

HyperFrames

Any recent version

GSAP

Any recent version

WebGL2

Any recent version

puppeteer-core

Any recent version

FFmpeg

Any recent version

Claude Code — Claude Opus 5.5 (claude-opus-5-5) — wrote every file — your Claude plan Node.js — 24.x (24.13.1 here) — the HyperFrames CLI and the dev harness — free HyperFrames — 0.8.74 (npx hyperframes@0.8.74) — check, render (HTML → MP4) — free, runs locally GSAP — 3.14.2 (jsDelivr CDN) — the one paused timeline HyperFrames seeks — free WebGL2 — in Chrome (SwiftShader, software) — the raymarcher — free puppeteer-core — 24.22.3 (tools/ only) — dev snapshots and the clearance probe — free FFmpeg — any recent build — the Instagram re-encode, contact sheet and loop test — free Codex or any agent that can write files and run commands works too. No GPU is needed: HyperFrames renders WebGL in software, and this piece was built for that (see step 3). Provenance: Recorded September 28, 2026: Claude Code with Claude Opus 5.5 (claude-opus-5-5); GSAP 3.14.2 from jsDelivr; HyperFrames 0.8.74 rendering WebGL2 in Chrome 152 headless shell with SwiftShader at 1080×1920, 30 fps, 21.067 s (632 frames), no audio; the scene traced at 810×1440 and upsampled in the motion-blur pass. The render took 21 min 29 s with 4 workers on a 24-thread machine shared with another agent's Blender render (beginframe capture, software GPU, HF_DE_STALL_MS=600000); the master is 47.1 MB, and the Reels copy was re-encoded with FFmpeg (libx264, CRF 21, aq-mode 3, maxrate 22M, faststart) to 22.1 MB. check passed with 0 errors and 4 warnings, all Chrome's "GPU stall due to ReadPixels" driver notes (about 12 minutes, with --timeout 180000). Camera (every frame): roll at most 14.6 degrees (mean 4.7 through the run), roll rate at most 30 degrees per second, no scripted rolls; the first cut peaked at 61 degrees plus two full 360-degree rolls. Loop test (Gaussian blur sigma 3, then SSIM, on the master): 0.8307 across the seam (last frame to frame 0) against 0.8337 and 0.8261 for the steps either side, and PSNR 24.13 dB against 24.35 and 23.87; the steps change smoothly on both sides (0.8464, 0.8421, 0.8370, 0.8337 into the seam; 0.8261, 0.8225, 0.8190, 0.8167 out of it). On the Reels copy: 0.8320 against 0.8352 and 0.8279. Numerically, the camera moves 0.2674, 0.2685 and 0.2699 m over the frames either side of and across the seam. Minimum clearance to rock along the flight: 1.53 m. No external images, footage, textures, models or generative-media models were used.