threejs-ambient-contact-shading SKILL.md skillA
threejs-ambient-contact-shading 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.
mdr add linegel/threejs-complete-set-of-skill/threejs-ambient-contact-shading@git:20260924.9afe603Pins git:20260924.9afe603 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-ambient-contact-shading/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260924.9afe603, committed Sep 24, 2026
- First version recorded
- Jul 13, 2026
- Size
- 9,454 bytes
- Repository stars
- 12
- License
- ISC
Ground indirect lighting with ambient visibility in Three.js r185 WebGPU/TSL. Use when choosing authored material AO, dynamic GTAO, forward-lighting placement, reduced-resolution reconstruction, temporal AO, or bent normals.
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
# Ambient Contact Shading AO is visibility of indirect illumination. It may attenuate indirect diffuse and environment/specular response. Do not multiply direct light, emission, UI, or an already tone-mapped frame by AO. The final image changes through indirect lighting; test direct/emissive invariance in separate scene-linear terms at fixed exposure, not by requiring unchanged final RGB. `$threejs-choose-skills` is an optional multi-system coordinator. Use `$threejs-image-pipeline` when AO shares depth, normals, velocity, history, or final-output ownership. ## 1. Choose the ambient-visibility branch Use the first branch whose gate passes: | Gate | Branch | Consequence | | --- | --- | --- | | Required occlusion is static/local and can be authored in assets | material `aoMap` / `aoNode` | One forward render; no dynamic inter-object contact. | | Dynamic screen contact is required and the renderer exposes indirect lighting separately | apply GTAO visibility to that term | One geometry pass can remain possible. | …
Read the whole file at its exact version.
How to install
mdr add linegel/threejs-complete-set-of-skill/threejs-ambient-contact-shading@sha256:73c287193f61bcb7The line at the top of this page pins the label git:20260924.9afe603, 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.
[](https://markdownregistry.com/a/art_yxisqj7ltti6ms5n)
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Versions
The registry has recorded 4 versions of this file, between Jul 13, 2026 and Sep 24, 2026, about one every 24 days. Its first recorded version is graded C and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260924.9afe603 latest | 2026-09-24 | 9afe603 | 9,454 B | A | view · diff |
| git:20260716.62a9bc5 | 2026-07-16 | 62a9bc5 | 8,727 B | A | view · diff |
| git:20260716.2ce13bc | 2026-07-16 | 2ce13bc | 7,463 B | A | view · diff |
| git:20260713.f0e8d5c | 2026-07-13 | f0e8d5c | 46 B | C | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9454 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
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_yxisqj7ltti6ms5n GET https://markdownregistry.com/api/v1/resolve?ref=linegel/threejs-complete-set-of-skill/threejs-ambient-contact-shading GET https://markdownregistry.com/api/v1/blob/73c287193f61bcb74738ed81f2892dd8b3b99751ef0585e618f4d1c9c8ad6110
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.