atmosphere-shader SKILL.md skillA

atmosphere-shader from tdimino/claude-code-minoan is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tdimino/claude-code-minoan/atmosphere-shader@git:20260515.94938c4

Pins git:20260515.94938c4 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tdimino/claude-code-minoan
Path
skills/design-media/atmosphere-shader/SKILL.md
Versions recorded
2
Latest version
git:20260515.94938c4, committed May 15, 2026
First version recorded
May 12, 2026
Size
11,446 bytes
Repository stars
41
License
MIT

Generate physically-based atmospheric scattering shaders — sky domes, planetary atmospheres, LUT-optimized pipelines, depth-aware post-processing. Four modes — sky-dome, atmosphere-post, planet, lut. Triggers on atmospheric scattering, sky shader, sunset rendering, planet atmosphere, Rayleigh scattering, Mie scattering, volumetric sky, sky dome, atmosphere post-processing, aerial perspective, transmittance LUT, sky rendering, realistic sky, planetary rendering.

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

# Atmosphere Shader Skill

Render physically-accurate skies, sunsets, and planetary atmospheres through atmospheric scattering — Rayleigh, Mie, and Ozone models composed via raymarching in GLSL fragment shaders. Four progressive modes from flat backdrop to LUT-optimized planetary pipeline.

## Modes

| Mode | Output | Complexity |
|------|--------|------------|
| `sky-dome` | Single-pass fragment shader, flat sky backdrop | Entry point |
| `atmosphere-post` | Depth-aware post-processing effect with atmospheric fog | Intermediate |
| `planet` | Spherical atmosphere shell around a mesh, logarithmic depth | Advanced |
| `lut` | Transmittance + Sky View + Aerial Perspective LUTs, FBO pipeline | Production |

## Gotchas — What Claude Gets Wrong

These are the highest-signal items in this skill. Every one is a concrete, reproducible failure mode.

### 1. Wrong scattering coefficients

Claude invents plausible-looking but physically incorrect beta values. Use these exact constants for Earth:

```glsl
const vec3 BETA_R = vec3(5.8e-3, 13.5e-3, 33.1e-3);   // Rayleigh scattering (1/km)
const float BETA_M_SCATTER = 21e-3;                      // Mie scattering
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tdimino/claude-code-minoan/atmosphere-shader@sha256:82ce4f1c3380c830

The line at the top of this page pins the label git:20260515.94938c4, 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_7jxdtbgwexsencmc.svg)](https://markdownregistry.com/a/art_7jxdtbgwexsencmc)

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

Versions

The registry has recorded 2 versions of this file, between May 12, 2026 and May 15, 2026, about one every 2 days.

versioncommittedcommitsizeaudit
git:20260515.94938c4 latest2026-05-15 94938c4 11,446 BA view · diff
git:20260512.5ebea4b2026-05-12 5ebea4b 11,444 BA 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 (11446 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

tdimino/claude-code-minoan · 41 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7jxdtbgwexsencmc
GET https://markdownregistry.com/api/v1/resolve?ref=tdimino/claude-code-minoan/atmosphere-shader
GET https://markdownregistry.com/api/v1/blob/82ce4f1c3380c830bb2b73edf71bc8c7705eab8528bd11b1d59832860295c23e

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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