shader-isf-ffgl SKILL.md skillA
shader-isf-ffgl from vecnode/vncode is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vecnode/vncode/shader-isf-ffgl@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/vncode
- Path
packages/dsh-shaders/skills/shader-isf-ffgl/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261020.ef66089, committed Oct 20, 2026
- Size
- 6,410 bytes
- Repository stars
- 10
- License
- AGPL-3.0
Shader formats for VJ and live-visual hosts - ISF (GLSL plus JSON metadata, which Resolume reads directly) and FFGL (FreeFrameGL, a C++ plugin ABI). What each one is, what the port renames, and exactly what this row can and cannot produce.
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
# ISF and FFGL Two formats, two very different things. Getting them mixed up wastes a day. | | ISF | FFGL | |---|---|---| | what it is | a shader **file format**: GLSL + a JSON block | a **C++ plugin ABI**: a compiled `.dll`/`.so`/`.bundle` | | what you write | one `.fs` file (or an `.fs` with the JSON prepended) | C++ against the FFGL SDK | | what the host loads | the shader | the binary | | can this row make one | **yes**, complete | **a scaffold only** - never a build | ## ISF: the shader format ISF is "GLSL with inputs declared". The host parses a JSON block, builds the controls, and calls `main()` with uniforms set. Two shapes exist: the JSON as a leading comment block in the same file, or a separate `.json`. This row emits both (`target=isf` gives `<name>.fs` and `<name>.json`). The uniforms ISF itself provides: | name | type | meaning | |---|---|---| | `RENDERSIZE` | vec2 | render target size in pixels | | `TIME` | float | seconds | | `TIMEDELTA` | float | seconds since the last frame | | `FRAMEINDEX` | int | frame counter | | `PASSINDEX` | int | index of this pass | | `inputImage` | sampler2D | the incoming image | …
Read the whole file at its exact version.
How to install
mdr add vecnode/vncode/shader-isf-ffgl@sha256:a5ccf414cca376f1The 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_pwtfkcmohpgehz3o)
1 badge image fetches in 30 days. What the badge shows.
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 (6410 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/vncode · 10 stars · license AGPL-3.0 · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pwtfkcmohpgehz3o GET https://markdownregistry.com/api/v1/resolve?ref=vecnode/vncode/shader-isf-ffgl GET https://markdownregistry.com/api/v1/blob/a5ccf414cca376f18df23281d09048084c955935aeafff77dc5c917d6f4b8082
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.