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Billions of triangles in minutes

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Arseny Kapoulkine

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Description

Billions of triangles in minutes is a technical blog post by Arseny Kapoulkine on zeux.io about speeding hierarchical clustered LOD builds in meshoptimizer enough to process NVIDIA's multi-billion-triangle Zorah glTF in minutes instead of tens of minutes.

It explains Nanite-like cluster DAG construction, raster versus ray-tracing clusterizers, sparse memset fixes, mesh scheduling by triangle count, Morton spatial sorting, SIMD AABB helpers, and thread-local allocation caches, ending with the clusterlod.h demo path and vk_lod_clusters integration.

Readers should be advanced geometry-pipeline or engine programmers familiar with meshlets, simplification, and multi-threaded content tools. Nanite background is helpful but summarized.

The post is free HTML with timings, code sketches, and pointers into the open-source meshoptimizer repository.

It is useful as a practical optimization diary for clustered LOD tooling at extreme mesh scale.