🎬 MultiPass for Maya

MultiPass is a Maya Python tool for automated Arnold multi-pass rendering. With a simple Qt UI, you can quickly configure cameras, resolution, Arnold samples, and decide which passes to render. It also exports camera metadata (CSV + JSON) for pipelines like COLMAP.

✨ Features

✅ Add selected cameras directly from your scene
✅ Choose custom resolution (Width × Height)
✅ Configure Arnold sampling (AA, Diffuse, Specular, Transmission, SSS)
✅ Select which passes to render:
   🎨 Color Image (PNG)
   🟦 Normals (EXR)
   ⚫ Depth (EXR)
   📐 Camera Parameters (CSV + JSON)
✅ Choose your output path — clean folder structure
✅ Modern Qt UI (PySide6 / PySide2) integrated in Maya

📦 Installation

• Clone or download this repository.

• Copy the folder MultiPass into your Maya scripts directory:

• Documents/maya/2025/scripts/

• (Optional) Run the included installer.bat for automatic setup.

🚀 Usage

In Maya, open the Script Editor (Python tab).

Run:

import MultiPass
MultiPass.launch()

Workflow:

• 📷 Select your cameras → click Add Selected Cameras

• 📏 Set resolution and Arnold sampling

• ✅ Tick which passes you want

• 📂 Choose an output path

• ▶️ Click Render Images

• 📂 Output Structure

  <chosen path>/
  └── <camera name>/
      ├── ColorImage/
      │   └── frame.png
      ├── Normals/
      │   └── N.exr
      ├── Depth/
      │   └── Z.exr
      ├── camera_csv.csv
      ├── camera_json.json
      └── colmap_camera_json.json

⚙️ Requirements

• Autodesk Maya 2025 (tested)

• Arnold for Maya (mtoa) plugin

• Python 3 (bundled with Maya)

• PySide6 or PySide2 (bundled with Maya)

📝 Notes

• Make sure Arnold (mtoa) is loaded in Maya.

• If the UI doesn’t update after edits, reload the module:

  import importlib, MultiPass
  importlib.reload(MultiPass)
  MultiPass.launch()

📜 License

MIT License — free to use and adapt.