HackerTube.dev

A Deep Dive into Nanite Virtualized Geometry

SIGGRAPH Advances in Real-Time Rendering · 278.6K views · 2021-10-30 · 1:10:00

Open on YouTube ↗

If playback is restricted in your region, try opening the original video. Use Mark watched to add it to your marked videos.

Overview

Brian Karis's SIGGRAPH 2021 talk explains how Unreal Engine 5's Nanite virtualized geometry works. It covers mesh import, the data structures, streaming, decompression, culling, software and hardware rasterization, and shading.

On Hacker News

HN treats it as the definitive deep dive on Nanite, admired for the engineering ambition behind pixel-sized triangles and compute-driven rendering.

Recommended by 7 HN people across 9 months · HN mentions 2021–2026

Topics

Computer graphics & renderingGame programming & engines
Search by tags
naniteunreal engine 5software rasterizerlevel of detailgpu renderingsiggraph

What people said

jfim · 2026-07 · Strong recommendation

Their YouTube channel has the excellent deep dive on the unreal engine's nanite virtual geometry system: [VIDEO] The one on idTech8 global illumination from last year is pretty interesting too.

Read the original HN comment ↗
superb_dev · 2023-09 · Strong recommendation

Nanite has a large pre-render step, but it also changes the rendering quite significantly. (Which in some cases includes a software rasterizer running on the GPU) This is a really good deep dive if you’re interested: [VIDEO]

Read the original HN comment ↗
jjoonathan · 2023-04 · Strong recommendation

It attracts truly extraordinary talent. One of many examples: [VIDEO] . There is more technical ambition in a single slide of that project than an entire department at places I've worked. However, it also tends to demand more and pay less, so there is churn and burnout and when it comes time to triage, the triage can cut very deep. If I were to dive into the JIRA for any one of these "missing compression" incidents, I wouldn't expect to find an easy win, I would expect to find "missing compression" beneath a pile of much worse bugs like "level 2 crashes on AMD cards." So it goes.

Read the original HN comment ↗

Sources

Video by SIGGRAPH Advances in Real-Time Rendering, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.

Selection checks
  • SaaS & AI candidates: Topic keywords do not match
  • Editor-approved picks: Editorial review is required

Rule matches identify candidates. They do not guarantee video quality or financial results.

About the library and its sources