threejs-scalable-real-time-shadows SKILL.md skillA

threejs-scalable-real-time-shadows from linegel/threejs-complete-set-of-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add linegel/threejs-complete-set-of-skill/threejs-scalable-real-time-shadows@git:20260924.0816c5a

Pins git:20260924.0816c5a in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
linegel/threejs-complete-set-of-skill
Path
skills/threejs-scalable-real-time-shadows/SKILL.md
Versions recorded
3
Latest version
git:20260924.0816c5a, committed Sep 24, 2026
First version recorded
Jul 13, 2026
Size
9,510 bytes
Repository stars
12
License
ISC

Fit scalable directional cast shadows in Three.js r185 WebGPU/TSL. Use when choosing one bounded shadow, CSM, tiled arrays, or cached clipmaps; stabilizing projection, filtering, or bias; or fixing invalidation, caster parity, bindings, or sustained cost.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Scalable Real-Time Shadows

Directional shadows are a fit problem: fit the smallest light-space
representation that covers required caster-to-receiver rays, then spend work on
the projection, filter, and updates receivers actually use.

`$threejs-choose-skills` is an optional multi-system coordinator. Use
`$threejs-visual-validation` for capture/readback evidence.

## 1. Choose one topology

Compare the same seeded workload, projection, filter, and receiver policy:

| Gate | First r185 WebGPU branch | Cost topology |
| --- | --- | --- |
| A bounded receiver/caster volume passes world-texel and depth-precision gates | one `DirectionalLight` shadow | one view, one depth texture, one filter evaluation |
| Camera-depth coverage changes continuously | `CSMShadowNode` | `L` shadow views/maps; normally one active filter, two in a fade |
| One fixed orthographic footprint is partitioned spatially | `TileShadowNode` | one depth array, `N` backend layer passes, `N` containment tests, and a union render list that can draw each caster in every layer |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add linegel/threejs-complete-set-of-skill/threejs-scalable-real-time-shadows@sha256:906511806f80db61

The line at the top of this page pins the label git:20260924.0816c5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_idtfgnli7m6ukypf.svg)](https://markdownregistry.com/a/art_idtfgnli7m6ukypf)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Jul 13, 2026 and Sep 24, 2026, about one every 36 days. Its first recorded version is graded C and its latest A.

versioncommittedcommitsizeaudit
git:20260924.0816c5a latest2026-09-24 0816c5a 9,510 BA view · diff
git:20260716.2ce13bc2026-07-16 2ce13bc 9,289 BA view · diff
git:20260713.f0e8d5c2026-07-13 f0e8d5c 49 BC view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9510 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

linegel/threejs-complete-set-of-skill · 12 stars · license ISC · pushed 2026-09-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_idtfgnli7m6ukypf
GET https://markdownregistry.com/api/v1/resolve?ref=linegel/threejs-complete-set-of-skill/threejs-scalable-real-time-shadows
GET https://markdownregistry.com/api/v1/blob/906511806f80db6167ab3e87360ba46864b1d9493675eee78ec611f7d9fe2871

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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