Terrain Diffusion: A Diffusion-Based Successor to Perlin Noise in Infinite, Real-Time Terrain Generation

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Summary

Terrain Diffusion introduces a diffusion-based successor to Perlin noise, using a novel InfiniteDiffusion algorithm to generate realistic, seamless, and boundless procedural worlds with constant-time random access.

For decades, procedural worlds have been built on procedural noise functions such as Perlin noise, which are fast and infinite, yet fundamentally limited in realism and large-scale coherence. We introduce Terrain Diffusion, an AI-era successor to Perlin noise that bridges the fidelity of diffusion models with the properties that made procedural noise indispensable: seamless infinite extent, seed-consistency, and constant-time random access. At its core is InfiniteDiffusion, a novel algorithm for infinite generation, enabling seamless, real-time synthesis of boundless landscapes. A hierarchical stack of diffusion models couples planetary context with local detail, while a compact Laplacian encoding stabilizes outputs across Earth-scale dynamic ranges. An open-source infinite-tensor framework supports constant-memory manipulation of unbounded tensors, and few-step consistency distillation enables efficient generation. Together, these components establish diffusion models as a practical foundation for procedural world generation, capable of synthesizing entire planets coherently, controllably, and without limits.
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Paper page - Terrain Diffusion: A Diffusion-Based Successor to Perlin Noise in Infinite, Real-Time Terrain Generation

Source: https://huggingface.co/papers/2512.08309

Abstract

Terrain Diffusion uses diffusion models and a novel algorithm called InfiniteDiffusion to generate realistic, seamless, and boundless procedural worlds with constant-time random access.

For decades, procedural worlds have been built onprocedural noisefunctions such asPerlin noise, which are fast and infinite, yet fundamentally limited in realism and large-scale coherence. We introduceTerrain Diffusion, an AI-era successor toPerlin noisethat bridges the fidelity ofdiffusion modelswith the properties that madeprocedural noiseindispensable:seamless infinite extent,seed-consistency, andconstant-time random access. At its core isInfiniteDiffusion, a novel algorithm for infinite generation, enabling seamless, real-time synthesis of boundless landscapes. Ahierarchical stackofdiffusion modelscouplesplanetary contextwithlocal detail, while acompact Laplacian encodingstabilizes outputs acrossEarth-scale dynamic ranges. An open-sourceinfinite-tensor frameworksupportsconstant-memory manipulationof unbounded tensors, andfew-step consistency distillationenables efficient generation. Together, these components establishdiffusion modelsas a practical foundation for procedural world generation, capable of synthesizing entire planets coherently, controllably, and without limits.

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