@kechogarcia Noice! Any ideas how it compares to say AMD FidelityFX radix sort? I have ported it to unity for gaussian splat needs (hlsl https://github.com/aras-p/UnityGaussianSplatting/blob/fded9c0/package/Shaders/GpuSortFidelityFX.hlsl and c# https://github.com/aras-p/UnityGaussianSplatting/blob/fded9c0/package/Runtime/GpuSorting.cs ) but I don't know if it's "good" compared to any other impls.

Source

• URL: https://x.com/aras_p/status/1737463905922830691
• Author: Aras Pranckevičius 🇺🇦🇱🇹 (@aras_p)
• Posted: 2023-12-20 13:24:10

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1/ @aras_p

@kechogarcia

Noice! Any ideas how it compares to say AMD FidelityFX radix sort? I have ported it to unity for gaussian splat needs (hlsl https://github.com/aras-p/UnityGaussianSplatting/blob/fded9c0/package/Shaders/GpuSortFidelityFX.hlsl and c# https://github.com/aras-p/UnityGaussianSplatting/blob/fded9c0/package/Runtime/GpuSorting.cs ) but I don’t know if it’s “good” compared to any other impls.

2/ @kechogarcia

@aras_p

I haven’t done a deep optimization yet. But I saw their code yesterday from your post, and from the looks is not stable, so likely theirs is faster because they use less LDS on Step 1 and give up on stableness.

Related

• Spine: 2023-12-20-stable-radix-sorting-in-the-gpu-8-bits-per-radix