Maya Scripts

This repository contains python scripts for Maya & Renderman.

Requirements

• Renderman 23+
• Python 3.7+
• Maya 2018.3+

Features

Feature	Module	Description
Light AOV Automation	renderman/breakdown_lights_aovs	Auto-create light passes with per-light group filtering
Shadow AOV Automation	renderman/breakdown_shadows_aovs	Auto-create shadow passes with per-light group filtering
AOV Import from JSON	renderman/utils	Load AOV configurations from JSON presets
Render Layer Import from JSON	renderman/utils	Load render layer configurations from JSON presets
Relative Texture Paths	renderman/utils	Convert texture paths to relative (<ws>) paths for project portability
Viewport Optimization	display/utils	Toggle bounding box display for heavy geometry
LOD Visibility Control	display/utils	Control geometry visibility in viewport vs. render

RenderMan

Light AOV Breakdown

Scans the scene for all RenderMan lights, assigns light groups based on parent hierarchy, and creates individual rmanDisplayChannel nodes with the appropriate LPE expressions.

from renderman import breakdown_lights_aovs
breakdown_lights_aovs.main()

Shadow AOV Breakdown

Same approach as light AOVs — creates shadow passes and assigns shadow groups to lights based on parent hierarchy.

from renderman import breakdown_shadows_aovs
breakdown_shadows_aovs.main()

Import AOVs / Render Layers from JSON

Load AOV or render layer presets from a JSON file via a file browser window.

from renderman.utils import Utils

# Import AOVs
Utils()._generic_window("Imports AOVs from Json", callback=Utils().import_aovs_from_json)

# Import Render Layers
Utils()._generic_window("Imports RenderLayers from Json", callback=Utils().import_render_layers)

Relative Texture Paths

Converts all texture paths in the scene to relative <ws> paths, avoiding missing textures when moving projects.

from renderman.utils import Utils
Utils().set_relative_path()

Display

Viewport optimization utilities for selected geometry.

from display.utils import display_as_bounding_box, display_full_geometry, unset_lod_visibility, set_lod_visibility

display_as_bounding_box()   # Show selected objects as bounding boxes
display_full_geometry()     # Restore full geometry display
unset_lod_visibility()      # Hide in viewport, still renders
set_lod_visibility()        # Visible in viewport and renders

Shelf

A custom Maya shelf (shelves/shelf_MayaScripts.mel) is included with quick-access buttons:

Button	Action
Light	Create light AOVs and assign light groups
Shadows	Create shadow AOVs and assign shadow groups
AOVs	Import AOV presets from JSON
Layers	Import render layer presets from JSON

Copy the shelf file to %USERNAME%/maya/<your_maya_version>/prefs/shelves to use it.

Documentations

• RenderMan
• Python
• Maya

Installation

1. Clone the repository :

   git clone https://github.com/LeoChabrier/maya-scripts.git

2. Copy to Maya Preferences :

   Copy scripts folder to %USERNAME%/maya/<your_maya_version>/prefs

   Or run the .ps1 script and give it your maya preferences path

   cd maya-scripts
   ./.scripts/Push-Update.ps1

License

This project is licensed under the MIT License - see the LICENSE file for details.