shader-dev

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

<div style="color:#fff;padding:20px;font-family:sans-serif;">

document.body.innerHTML = '<div style="color:#fff;padding:20px;font-family:sans-serif;"><h2>WebGL 2 not supported</h2></div>';

document.body.innerHTML = '<p style="color:#fff;">WebGL2 not supported</p>';

Audit 0.4.1 · source sha ceddde63e832 · 31 Oct 2026Report an issue or request a re-scan

• Publisherminimax-ai GitHub organizationOwner of the repository this skill is read from
• Source folderminimax-ai/skills/skills/shader-devThe exact folder we audited
• LicenceMITAs the repository states it
• Commit pinned for this verdictceddde63e832A new audit runs when the source changes
• Repository statusNot archivedLast push 196 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Comprehensive GLSL shader techniques for creating stunning visual effects — ray marching, SDF modeling, fluid simulation, particle systems, procedural generation, lighting, post-processing, and more.

---
name: shader-dev
description: Comprehensive GLSL shader techniques for creating stunning visual effects — ray marching, SDF modeling, fluid simulation, particle systems, procedural generation, lighting, post-processing, and more.
license: MIT
metadata:
  version: "1.0"
  category: graphics
---

# Shader Craft

A unified skill covering 36 GLSL shader techniques (ShaderToy-compatible) for real-time visual effects.

## Invocation

```
/shader-dev <request>
```

`$ARGUMENTS` contains the user's request (e.g. "create a raymarched SDF scene with soft shadows").

## Skill Structure

```
shader-dev/
├── SKILL.md                      # Core skill (this file)
├── techniques/                   # Implementation guides (read per routing table)
│   ├── ray-marching.md           # Sphere tracing with SDF
│   ├── sdf-3d.md                 # 3D signed distance functions
│   ├── lighting-model.md         # PBR, Phong, toon shading
│   ├── procedural-noise.md       # Perlin, Simplex, FBM
│   └── ...                       # 34 more technique files
└── reference/                    # Detailed guides (read as needed)
    ├── ray-marching.md           # Math derivations & advanced patterns
    ├── sdf-3d.md                 # Extended SDF theory
    ├── lighting-model.md         # Lighting math deep-dive
    ├── procedural-noise.md       # Noise function theory
    └── ...                       # 34 more reference files
```

## How to Use

1. Read the **Technique Routing Table** below to identify which technique(s) match the user's request
2. Read the relevant file(s) from `techniques/` — each file contains core principles, implementation steps, and complete code templates
3. If you need deeper understanding (math derivations, advanced patterns), follow the reference link at the bottom of each technique file to `reference/`
4. Apply the **WebGL2 Adaptation Rules** below when generating standalone HTML pages

## Technique Routing Table

| User wants to create... | Primary technique | Combine with |
|---|---|---|
| 3D objects / scenes from math | [ray-marching](techniques/ray-marching.md) + [sdf-3d](techniques/sdf-3d.md) | lighting-model, shadow-techniques |
| Complex 3D shapes (booleans, blends) | [csg-boolean-operations](techniques/csg-boolean-operations.md) | sdf-3d, ray-marching |
| Infinite repeating patterns in 3D | [domain-repetition](techniques/domain-repetition.md) | sdf-3d, ray-marching |
| Organic / warped shapes | [domain-warping](techniques/domain-warping.md) | procedural-noise |
| Fluid / smoke / ink effects | [fluid-simulation](techniques/fluid-simulation.md) | multipass-buffer |
| Particle effects (fire, sparks, snow) | [particle-system](techniques/particle-system.md) | procedural-noise, color-palette |
| Physically-based simulations | [simulation-physics](techniques/simulation-physics.md) | multipass-buffer |
| Game of Life / reaction-diffusion | [cellular-automata](techniques/cellular-automata.md) | multipass-buffer, color-palette |
| Ocean / water surface | [water-ocean](techniques/water-ocean.md) | atmospheric-scattering, lighting-model |
| Terrain / landscape | [terrain-rendering](techniques/terrain-rendering.md) | atmospheric-scattering, procedural-noise |
| Clouds / fog / volumetric fire | [volumetric-rendering](techniques/volumetric-rendering.md) | procedural-noise, atmospheric-scattering |
| Sky / sunset / atmosphere | [atmospheric-scattering](techniques/atmospheric-scattering.md) | volumetric-rendering |
| Realistic lighting (PBR, Phong) | [lighting-model](techniques/lighting-model.md) | shadow-techniques, ambient-occlusion |
| Shadows (soft / hard) | [shadow-techniques](techniques/shadow-techniques.md) | lighting-model |
| Ambient occlusion | [ambient-occlusion](techniques/ambient-occlusion.md) | lighting-model, normal-estimation |
| Path tracing / global illumination | [path-tracing-gi](techniques/path-tracing-gi.md) | analytic-ray-tracing, multipass-buffer |
| Precise ray-geometry intersections | [analytic-ray-tracing](techniques/analytic-ray-tracing.md) | lighting-model |
| Voxel worlds (Minecraft-style) | [voxel-rendering](techniques/voxel-rendering.md) | lighting-model, shadow-techniques |
| Noise / FBM textures | [procedural-noise](techniques/procedural-noise.md) | domain-warping |
| Tiled 2D patterns | [procedural-2d-pattern](techniques/procedural-2d-pattern.md) | polar-uv-manipulation |
| Voronoi / cell patterns | [voronoi-cellular-noise](techniques/voronoi-cellular-noise.md) | color-palette |
| Fractals (Mandelbrot, Julia, 3D) | [fractal-rendering](techniques/fractal-rendering.md) | color-palette, polar-uv-manipulation |
| Color grading / palettes | [color-palette](techniques/color-palette.md) | — |
| Bloom / tone mapping / glitch | [post-processing](techniques/post-processing.md) | multipass-buffer |
| Multi-pass ping-pong buffers | [multipass-buffer](techniques/multipass-buffer.md) | — |
| Texture / sampling techniques | [texture-sampling](techniques/texture-sampling.md) | — |
| Camera / matrix transforms | [matrix-transform](techniques/matrix-transform.md) | — |
| Surface normals | [normal-estimation](techniques/normal-estimation.md) | — |
| Polar coords / kaleidoscope | [polar-uv-manipulation](techniques/polar-uv-manipulation.md) | procedural-2d-pattern |
| 2D shapes / UI from SDF | [sdf-2d](techniques/sdf-2d.md) | color-palette |
| Procedural audio / music | [sound-synthesis](techniques/sound-synthesis.md) | — |
| SDF tricks / optimization | [sdf-tricks](techniques/sdf-tricks.md) | sdf-3d, ray-marching |
| Anti-aliased rendering | [anti-aliasing](techniques/anti-aliasing.md) | sdf-2d, post-processing |
| Depth of field / motion blur / lens effects | [camera-effects](techniques/camera-effects.md) | post-processing, multipass-buffer |
| Advanced texture mapping / no-tile textures | [texture-mapping-advanced](techniques/texture-mapping-advanced.md) | terrain-rendering, texture-sampling |
| WebGL2 shader errors / debugging | [webgl-pitfalls](techniques/webgl-pitfalls.md) |

Excerpt, first 6,000 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

uv /= bufferRes;
uv = uv + lap * (1.0 / iResolution.xy) * 3.0;  // Displace sampling point along gradient (diffusion)
uv = vec2(uv_len * cos(new_angle) + mid.x,
uv *= 30.0;
uv  += 0.5 * vec2(cos(5.1123 + 0.353*uv2.y + speed*0.131),
uv  -= cos(uv.x + uv.y) - sin(uv.x*0.711 - uv.y);

git clone https://github.com/minimax-ai/skills
git -C skills checkout ceddde63e832

Works in

1. 2026-10-31
   !CAUTION B 89 / 100

   first audit · source ceddde63e832

Questions about shader-dev

• github.com/minimax-ai/skills/tree/main/skills/shader-dev — the audited source at commit ceddde63e832 and every finding aboveObserved · 31 Oct 2026

Spotted something wrong? Report a correction · Methodology