# webgl-landing-steering

Guides visual direction, Three.js architecture, and performance budgets for WebGL landing pages before writing front-end code.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 1600 installs · ★ 7001
- Author: MengTo
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/MengTo/Skills/tree/HEAD/agent-skills/web-design/webgl-landing-steering/SKILL.md
- Updated: 2026-10-25
- HTML: https://affpapa.org/en/nevibecode/skills/webgl-landing-steering

## What it does

The skill structures WebGL landing page planning by categorizing requirements into four lanes: subtle depth for B2B SaaS, data particles for developer tools, centered 3D models for products, or cinematic scenes for brand campaigns. It stops the agent from piling heavy postprocessing onto conversion-critical pages.

Inside are strict gates for performance and accessibility. The guidelines enforce a pixel ratio cap via `Math.min(devicePixelRatio, 1.5-2)`, static poster fallbacks, `prefers-reduced-motion` handling, and memory cleanup during SPA route transitions. Heavy shaders can ruin mobile conversions, so the skill treats headline readability and CTA contrast as top priorities.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill webgl-landing-steering -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/webgl-landing-steering/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/webgl-landing-steering/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill webgl-landing-steering -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/webgl-landing-steering/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill webgl-landing-steering -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/webgl-landing-steering/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install MengTo/Skills webgl-landing-steering
```

2. **Manually: put the files in place**
- File: `.github/skills/webgl-landing-steering/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill webgl-landing-steering -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/MengTo/Skills --path agent-skills/web-design/webgl-landing-steering
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/webgl-landing-steering/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill webgl-landing-steering -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/MengTo/Skills/tree/HEAD/agent-skills/web-design/webgl-landing-steering/SKILL.md

## When to use it
- map conversion goals to an appropriate WebGL visual lane
- enforce pixel ratio caps and mobile frame-time limits
- set up fallback posters and reduced-motion states
- dispose Three.js geometries and textures on SPA route changes

## Example prompts
- Plan a WebGL hero section for an enterprise analytics waitlist with high text readability
- Select the Three.js pipeline and fallback behavior for a 3D product launch landing page
- Audit our landing page 3D scene against performance and accessibility gates

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 9480e437f0638616.

BEGIN THIRD-PARTY FILE 9480e437f0638616
```text
---
name: webgl-landing-steering
description: Use when creating or refining WebGL-heavy landing pages and you need to steer toward a specific visual outcome (premium, technical, playful, cinematic) while balancing conversion clarity, performance, and implementation complexity.
---

# WebGL Landing Steering Skill

## Use this skill to steer outcomes
Map landing-page goal to WebGL direction before writing code.

### 1) Define the page intent
Identify the primary conversion and brand signal:
- Premium / luxury / minimal confidence
- Technical / infrastructure / data authority
- Playful / consumer / social energy
- Cinematic / launch / storytelling impact

Also capture:
- Device mix (desktop-heavy vs mobile-heavy)
- Motion tolerance (`prefers-reduced-motion` policy)
- Production constraints (deadline, team skill, maintenance budget)

### 2) Choose the WebGL lane
Pick one dominant lane; avoid mixing 3-4 heavy effects in the hero.

#### Lane A: Subtle depth field (high conversion safety)
Use for: SaaS, productivity, B2B tools where readability wins.
- Visuals: soft gradient meshes, slow parallax planes, light bloom
- Motion: low amplitude, always secondary to copy
- Stack: Three.js plane shaders or lightweight shader canvas
- Rule: hero text contrast and CTA prominence first

#### Lane B: Data/particle intelligence (technical credibility)
Use for: AI, infra, analytics, developer products.
- Visuals: particle flows, node networks, vector fields, wireframes
- Motion: purposeful directional flow toward CTA area
- Stack: Three.js + custom shader/points, optionally GPGPU for dense fields
- Rule: communicate "system behavior," not random sparkles

#### Lane C: Object-centric 3D product moment (feature clarity)
Use for: hardware, apps with strong product visuals, launches.
- Visuals: central GLTF model, controlled camera orbit, material highlights
- Motion: interaction-driven or timeline-based reveal
- Stack: Three.js + GLTF/DRACO/KTX2 pipeline
- Rule: one hero object, short loop, fast first meaningful paint fallback

#### Lane D: Immersive cinematic scene (brand campaign)
Use for: campaign pages where wow factor is the main KPI.
- Visuals: volumetrics, heavy postprocessing, dense scene composition
- Motion: choreographed sequence with scroll chapters
- Stack: Three.js + postprocessing + optional GSAP ScrollTrigger
- Rule: provide a static/mobile fallback and strict performance gates

### 3) Steering matrix by landing page type
- Waitlist / pre-launch: Lane A or B. Keep copy legible and quick to load.
- Product feature page: Lane A or C. Demonstrate product truth, not abstract noise.
- Pricing / high-intent page: Mostly Lane A. Keep WebGL decorative only.
- Enterprise trust page: Lane B with restrained palette and low noise.
- Consumer app growth page: Lane B with playful palette, but cap CPU/GPU load.
- Campaign microsite: Lane C or D with explicit fallback for lower-end devices.

### 4) Quality gates before shipping
```
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