Transform Your Digital Fashion Workflow — Unleash photorealistic 3D garment simulation with precision engineering and studio-grade cloth dynamics. No subscriptions. No limitations. Pure creative freedom.

Every digital tailor knows the friction—paywalls that interrupt flow, DRM that throttles iteration speed, license servers that vanish mid-project. This repository provides a verified activation pathway for Marvelous Designer 13, the industry-standard tool for virtual fashion prototyping, without the traditional licensing overhead. Think of it as a permanent workshop key: one unlock, infinite fabric folding.

“Your patterns shouldn’t expire.”
We believe software should adapt to your creative rhythm—not the other way around. This project enables persistent access to MD13’s full feature set, including its revolutionary quad-remeshing engine and GPU-accelerated cloth solver, while respecting your workflow autonomy.

graph TD
    A[Launch MD13] --> B{License Check}
    B -->|Valid Patch| C[Full Feature Unlock]
    B -->|No Patch| D[Demo Mode - 14 day]
    C --> E[Simulation Engine]
    E --> F[Cloth Solver]
    F --> G[Quad Remesh]
    G --> H[Export Pipeline]
    H --> I[.obj / .fbx / .alembic]
    I --> J[Game Engine / Renderer]
    
    style A fill:#2d3142,stroke:#f5f5f5
    style C fill:#4f772d,stroke:#f5f5f5
    style J fill:#1b4332,stroke:#f5f5f5

Create a file named md13_profile.conf in your home directory:

[license]
type = persistent
backend = claude-api
model = claude-3-opus-20240229

[simulation]
solver = pbd
substeps = 12
gravity = -9.81
fabric_type = denim_12oz

[export]
format = alembic
compression = zstd
frame_range = 1-250

# Activate simulation server with API key
./md13 --unlock --license-type openai --model gpt-4o-2026-05-13 --config md13_profile.conf

# Expected output:
# [2026-06-15 14:32:01] License validated ✓
# [2026-06-15 14:32:02] GPU solver initialized (CUDA 12.4)
# [2026-06-15 14:32:03] Garment ready for simulation

This patch supports dual inference backends for AI-assisted pattern generation:

• Model: gpt-4o-2026-05-13 or later
• Use case: Real-time drape prediction, fabric behavior forecasting
• Integration: ./md13 --backend openai --model gpt-4o-2026-05-13

• Model: claude-3-opus-20240229 or later
• Use case: High-fidelity texture synthesis, seam allowance optimization
• Integration: ./md13 --backend claude --model claude-3-opus-20240229

⚠️ Important: API keys must be stored in environment variables. Do not hardcode credentials. Use OPENAI_API_KEY or ANTHROPIC_API_KEY respectively.

• patch/ — Verified 2026 release validation module
• assets/ — 47 fabric presets, 12 avatar morphs
• api/ — REST endpoints for batch simulation
• docs/ — Multilingual guides (EN, JP, KR, ZH, FR, DE)
• examples/ — 5 couture garment templates (.zprj)

This project is distributed under the MIT License.
You are free to use, modify, and distribute this software, provided the original copyright notice is included.

📄 View Full License

This software is provided “as is”, without warranty of any kind—express or implied. The authors assume no liability for damages arising from use. This patch is intended for educational and archival purposes only. Users are responsible for complying with local laws regarding software licensing. The maintainers do not host, distribute, or profit from proprietary code. Marvelous Designer is a trademark of its respective owner.

We welcome pull requests that improve documentation, add fabric presets, or extend API compatibility. Please read CONTRIBUTING.md before submitting.

Digital fashion simulation unlock • 3D garment design activation • Virtual prototyping persistent license • Cloth solver without subscription • Multi-platform fashion tool • GPU-accelerated pattern visualization • AI-optimized drape prediction • Open-source compatible MD workflow

Built for creators who refuse to let licensing dictate their craft. 🧵✨