iiinova — where your digital self keeps evolving

Arseny Kapoulkine @zeux.io · 30/09/2026

New blog post! In "Billions of triangles redux" we take another stab at improving various parts of clustered level of detail pipeline to make Zorah smaller and nicer! zeux.io/2026/09/30/b...

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Arseny Kapoulkine @zeux.io · 25/09/2026

Remesher has an online demo; I use it for development and testing so I haven't spent much time on polish :) This is a remesh -> simplify -> unwrap -> retexture pipeline mentioned in the release, unwrapping powered by xatlas and retexture powered by three-mesh-bvh ❤️ meshoptimizer.org/demo/remesh....

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Arseny Kapoulkine @zeux.io · 25/09/2026

meshoptimizer 1.3 is out! Featuring a new voxel remesher, support for normal generation, several simplification improvements and various optimizations and fixes. GitHub stars and reposts appreciated! meshoptimizer was started 10 years ago; excited for the years to come! github.com/zeux/meshopt...

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Arseny Kapoulkine @zeux.io · 08/09/2026

Funny/strange fact that I forgot about: meshoptimizer was initially going to be 1.0 from the get go! I changed the version number to 0.5 right before release. The header was still C++ back then. The "real" 1.0 was released in December 2025, more than 8 years later :)

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Arseny Kapoulkine @zeux.io · 08/09/2026

meshoptimizer turns 10 today! This blindsided me a little bit; I thought it would be later this year. So I don't have an anniversary release or post ready; I'm on a tail end of a few neat improvements that need a bit more time to work on or write about. Time flies!

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Arseny Kapoulkine @zeux.io · 06/08/2026

one more thing before I unplug for a couple weeks: nicer vertex normals!

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Arseny Kapoulkine @zeux.io · 30/06/2026

meshoptimizer 1.2 is out! Featuring support for tangent generation, a significantly faster vertex decoder for Intel/AMD CPUs, several new smaller algorithms (cluster position compression, triangle filtering, clusterlod BVH) and more. GitHub stars and boosts appreciated! github.com/zeux/meshopt...

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Arseny Kapoulkine @zeux.io · 21/05/2026

A list of experimental meshoptimizer APIs. When 1.0 was released in December last year, the only experimental API was marked with the green checkmark.

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Arseny Kapoulkine @zeux.io · 20/05/2026

Almost 10% speedup on this view from an upcoming meshopt function (1.05 => 0.96ms). Obvious omission in hindsight...

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Arseny Kapoulkine @zeux.io · 09/05/2026

who even needs triangles in the first place

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Arseny Kapoulkine @zeux.io · 30/04/2026

FWIW here's the updated errors for 20-bit (with oct10 as a baseline) and 21-bit (with signed oct10 as a baseline) for the tangent frame use case specifically; all 4 encodings are 31 bit. This is using the "optimal rounding" for the oct variants, and tangent angle in both cases for parity.

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Arseny Kapoulkine @zeux.io · 02/04/2026

meshoptimizer 1.1 is out! github.com/zeux/meshopt... Featuring two new major features, meshlet topology compression and opacity micromaps, as well as a few smaller features and improvements! More information in the infographic and release above :) Boosts and repository stars are welcome!

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Arseny Kapoulkine @zeux.io · 30/03/2026

Testing per vertex priority flags for simplification

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Arseny Kapoulkine @zeux.io · 08/02/2026

and just in case you have a spare GPU

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Arseny Kapoulkine @zeux.io · 31/01/2026

Still some bits to sand off but getting closer.

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Arseny Kapoulkine @zeux.io · 30/09/2025

New blog post! In "Billions of triangles in minutes" we'll walk through hierarchical cluster level of detail generation of, well, billions of triangles in minutes. Reposts welcome! zeux.io/2025/09/30/b...

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Arseny Kapoulkine @zeux.io · 23/09/2025

Unlike Vulkan, DX12 doesn't support loading 8-bit types from byte address buffers; this seems like it would be a problem for working with 8-bit triangle indices, but don't worry, you can just

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Arseny Kapoulkine @zeux.io · 19/09/2025

~3m instead of ~4m now :) It's actually ~2m40s when not ran under the profiler for whatever reason. While I *can* make the green bars completely solid I've already spent way longer than I should on this exercise so this will have to do!

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Arseny Kapoulkine @zeux.io · 02/09/2025

Not just from tiny_ocl.h, no.

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Arseny Kapoulkine @zeux.io · 21/08/2025

While it's quite silly to literally run the simplifier every frame on the UI thread in the browser, it's fun to see that it can indeed work at 60 FPS!

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Arseny Kapoulkine @zeux.io · 20/08/2025

meshoptimizer v0.25 is out! Featuring new simplification function that optimizes positions and attributes for appearance, experimental permissive mode to simplify faceted regions with selective seam preservation, regularization option for improved tessellation quality and deformation, multiple ...

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Arseny Kapoulkine @zeux.io · 18/07/2025

today is one of those days

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Arseny Kapoulkine @zeux.io · 13/07/2025

today is one of those days

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Arseny Kapoulkine @zeux.io · 10/06/2025

Note that radv commit above exposes this only on RDNA3/4. The commit contains helpful detail that suggests that if you aren't using MSAA, this is also fine on RDNA1/2.

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Arseny Kapoulkine @zeux.io · 30/05/2025

nothing a recently added function won't fix at least :-/

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Arseny Kapoulkine @zeux.io · 30/05/2025

... always look inside meshes if the metrics you evaluate look incredibly strange.

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Arseny Kapoulkine @zeux.io · 28/03/2025

2025 seems like a great year for software rasterization

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Arseny Kapoulkine @zeux.io · 17/03/2025

At gdc wed-thu and maybe fri, dm if you’d like to grab coffee

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Arseny Kapoulkine @zeux.io · 06/03/2025

why would they do this to me

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Arseny Kapoulkine @zeux.io · 12/02/2025

hard part (plotting points) done now for the easy part, choosing the best color

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Arseny Kapoulkine @zeux.io · 03/02/2025

These last four lines were entirely too much work but things seemingly work more or less.

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Arseny Kapoulkine @zeux.io · 08/01/2025

The more things change, the more they stay the same.

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Arseny Kapoulkine @zeux.io · 31/12/2024

Not shown to make the graphs easier to see ;)

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Arseny Kapoulkine @zeux.io · 31/12/2024

The trend continues which is kinda funny.

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Arseny Kapoulkine @zeux.io · 28/12/2024

Wow I was sure I would not get it until mid 2025 :) - Mesh shading works well on Windows - RT works well on Windows - Task shaders work well, no CP bottleneck nonsense - Linux drivers have a few bugs + some perf issues - Seems 2-3x slower vs 7900 GRE ($250 v 550) Good overall for the price!

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Arseny Kapoulkine @zeux.io · 11/12/2024

gradientNoise is my new best friend

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