The Worst Bug In Games Is Now Gone Forever
•October 15, 2025
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Why It Matters
Eliminating clipping bugs at the simulation level could dramatically cut development costs for games and unlock fully automated, waste‑free digital garment design, reshaping both entertainment and fashion supply chains.
Summary
The video spotlights a breakthrough research paper that finally eliminates the age‑old clipping problem plaguing real‑time graphics. By replacing the traditional “logarithmic barrier” collision handling with a novel “cubic barrier” approach, the method guarantees that even millions of thin objects—spaghetti‑like noodles, ribbons, cloth, and tiny spheres—never intersect. The presenter, Two Minute Papers, demonstrates the technique on a single GPU, showing up to 168 million collision checks with zero penetration, a feat previously thought impossible outside massive compute farms.
Key technical insights include the use of a 3×3 Jacobi‑block preconditioned Conjugate Gradient solver to resolve the massive system of contact forces efficiently, and an adaptive elastic “bubble” that smooths interactions instead of abruptly halting motion. The cubic barrier dynamically adjusts stiffness based on material elasticity, keeping microscopic gaps open where older offset‑geometric‑contact methods would fail. The demo walks through noodles twisting, ribbons being crushed, and even a virtual armadillo, all rendered without a single clipping artifact.
Notable examples underscore the broader relevance: Dr. Ryoichi Ando’s one‑author paper, originally published at SIGGRAPH Asia under the banner of Japanese fashion e‑commerce giant Zozo, aims to automate clothing production by simulating fabric drape without inter‑penetration. The video also draws parallels to VFX pipelines that spend weeks manually fixing cape‑through‑neck glitches, and to speedrunners who exploit clipping bugs to skip game sections. The presenter’s enthusiasm (“this is absolute insanity”) highlights both the visual beauty of the simulations and the surprise that such a powerful tool is freely available.
The implications are twofold. For game developers, the method promises a future where clipping bugs—costly to debug and a source of player frustration—could be eradicated at the engine level, improving both quality and speed‑run integrity. In the fashion industry, reliable cloth‑collision simulation could slash prototype cycles, reduce material waste, and enable virtual try‑ons, accelerating digital tailoring. However, the technique remains computationally intensive, running minutes per frame, which limits immediate adoption to offline or high‑budget pipelines.
Original Description
❤️ Check out Lambda here and sign up for their GPU Cloud: https://lambda.ai/papers
Guide:
Rent one of their GPUs with over 16GB of VRAM
Open a terminal
Just get Ollama with this command - https://ollama.com/download/linux
Then run ollama run gpt-oss:120b - https://ollama.com/library/gpt-oss:120b
Code and examples are available here: https://github.com/st-tech/ppf-contact-solver
Guide on how to try it: https://drive.google.com/file/d/1n068Ai_hlfgapf2xkAutOHo3PkLpJXA4/view
Sources:
📝 My paper on simulations that look almost like reality is available for free here:
Or this is the orig. Nature Physics link with clickable citations:
🙏 We would like to thank our generous Patreon supporters who make Two Minute Papers possible:
Benji Rabhan, B Shang, Christian Ahlin, Gordon Child, John Le, Juan Benet, Kyle Davis, Loyal Alchemist, Lukas Biewald, Michael Tedder, Owen Skarpness, Richard Sundvall, Steef, Sven Pfiffner, Taras Bobrovytsky, Thomas Krcmar, Tybie Fitzhugh, Ueli Gallizzi
If you wish to appear here or pick up other perks, click here: https://www.patreon.com/TwoMinutePapers
My research: https://cg.tuwien.ac.at/~zsolnai/
X/Twitter: https://twitter.com/twominutepapers
Thumbnail design: Felícia Zsolnai-Fehér - http://felicia.hu
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