# Threejs Shaders

> Three.js shaders - GLSL, ShaderMaterial, uniforms, custom effects. Use when creating custom visual effects, modifying vertices, writing fragment shaders, or extending built-in materials.

- Skill: `newmindsgroup/threejs-shaders` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add newmindsgroup/threejs-shaders`
- Raw SKILL.md: https://api.skillmd.com/api/skills/newmindsgroup/threejs-shaders/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: newmindsgroup (https://skillmd.com/u/newmindsgroup)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/newmindsgroup/threejs-shaders

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# Three.js Shaders

Three.js shaders - GLSL, ShaderMaterial, uniforms, custom effects. Use when creating custom visual effects, modifying vertices, writing fragment shaders, or extending built-in materials.

## When to Use
- You need custom shader logic in Three.js.
- The task involves `ShaderMaterial`, uniforms, GLSL, vertex deformation, or fragment-based effects.
- You are extending material behavior beyond what built-in materials provide.

## Core Workflow
1. Confirm the request matches this skill's trigger, scope, and risk profile.
2. Use the topic map to identify the relevant pattern, checklist, or example before writing detailed guidance or code.
3. Load `references/full-guidance.md` when implementation details, examples, anti-patterns, validation checks, or edge cases are needed.
4. Apply only the relevant guidance instead of loading or repeating the entire reference by default.
5. Verify the result against any validation checks, limitations, security notes, or platform constraints in the reference.

## Topic Map
- Quick Start
- ShaderMaterial vs RawShaderMaterial
- ShaderMaterial
- RawShaderMaterial
- Uniforms
- Uniform Types
- GLSL Declarations
- Updating Uniforms
- Varyings
- Common Shader Patterns
- Texture Sampling
- Vertex Displacement
- Fresnel Effect
- Noise-Based Effects
- Gradient
- Rim Lighting
- Dissolve Effect
- Extending Built-in Materials

## Reference Map
- `references/full-guidance.md` preserves the complete original guidance, including examples and detailed edge cases.

## Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

## Progressive Loading
Keep this `SKILL.md` as the compact routing and workflow entrypoint. Load the reference file only when the user task requires the deeper implementation material.