glsl-fundamentals SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
glsl-fundamentals from vecnode/vn-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vecnode/vn-code/glsl-fundamentals@git:20261020.ef66089Pins git:20261020.ef66089 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vecnode/vn-code
- Path
packages/dsh-shaders/skills/glsl-fundamentals/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261020.ef66089, committed Oct 20, 2026
- Size
- 7,780 bytes
- Repository stars
- 10
- License
- AGPL-3.0
The GLSL itself - which dialect a shader is in, what precision means, the types and functions that exist, and the exact compiler messages a mistake produces. Read this before writing GLSL for any target, and before believing an error message.
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
# GLSL fundamentals GLSL is not one language. It is a family, and the first thing to get right is **which member of it you are writing**. A shader that is correct in one is a wall of errors in another, and the errors never say "wrong dialect". ## The five dialects this row tells apart | dialect | looks like | compiles here | |---|---|---| | `es100` | no `#version`, `gl_FragColor`, `precision` | yes - WebGL 1 | | `es300` | `#version 300 es`, your own `out vec4` | yes - WebGL 2 | | `shadertoy` | `void mainImage(out vec4, in vec2)`, no `#version` | yes - wrapped in ES 3.00 | | `shader-skills` | same as Shadertoy, but `iFrame` is an **int** | yes - wrapped in ES 3.00 | | `desktop` | `#version 330 core` and up, no `es` | **no** - static checks only | `shader_verify` detects the dialect and says which one it found. Believe it, and if it guessed wrong, pass `dialect` explicitly. ## Desktop GLSL is not WebGL GLSL If a source starts with `#version 330 core` (or 110, 120, 150, 450), it is desktop GLSL. ANGLE - the compiler behind every browser - does not accept it. The row answers `v1-static` and names `glslangValidator` as the tool that would compile it. …
Read the whole file at its exact version.
How to install
mdr add vecnode/vn-code/glsl-fundamentals@sha256:96abffb603caf603The line at the top of this page pins the label git:20261020.ef66089, 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_fsbment7ztapnkkm)
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Versions
The registry has recorded 1 version of this file, committed on Oct 20, 2026.
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 (7780 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
vecnode/vn-code · 10 stars · license AGPL-3.0 · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fsbment7ztapnkkm GET https://markdownregistry.com/api/v1/resolve?ref=vecnode/vn-code/glsl-fundamentals GET https://markdownregistry.com/api/v1/blob/96abffb603caf6036af713f493dbea53547c708b7960cdce5afaf10e5cd7a849
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.