MPB Generator / Editor

Generate and edit MaterialPropertyBlocks from Materials and Shader Graphs without duplicating Materials.

Key Features

• Generate editable MaterialPropertyBlock data from existing Materials.
• Edit shader properties directly in the GameObject Inspector.
• Apply per-Renderer and per-material-slot shader overrides.
• Single-slot workflow with MPBGenerator.
• Multi-slot workflow with MPBGeneratorList.
• Material slot selection based on Renderer.sharedMaterials.
• Shader Graph Blackboard category parsing.
• Automatic Shader Graph asset detection.
• Support for Color, Vector, Float, Range, Texture, and Int properties.
• Checkbox support for detected float-based toggles.
• Optional generation of hidden shader properties.
• Generate, Apply, and Clear controls.
• Custom component icon support in Unity 2022 or newer.
• English and French technical documentation.
• Blood Splatter demo scene with Shader Graph assets.

Unity Compatibility

Recommended version: Unity 2021.3 LTS or newer.

• Unity 2021.3: Core functionality supported.
• Unity 2022 and newer: Additional custom component icon support.
• Custom icon functionality may be unavailable in older Unity versions.

Render Pipeline Compatibility

• The core editor tool is render-pipeline independent.
• Supports standard Unity shader properties through MaterialPropertyBlocks.
• Shader Graph category detection requires a compatible Shader Graph asset.
• The included Blood Splatter demo may require URP and Shader Graph, depending on its configuration.

Package Contents

• Runtime components and serialized property data.
• Custom Editor inspectors and utilities.
• English and French PDF documentation.
• Blood Splatter demo scene, Materials, Shader Graph assets, and textures.

Known Limitations

• Shader Graph category detection relies on the internal .shadergraph file format, which may change between Unity versions.
• MaterialPropertyBlocks do not guarantee GPU instancing or improved rendering performance.
• Shader properties without recognized Blackboard categories may appear under the Other category.

MPB Generator is a Unity Editor tool designed to simplify MaterialPropertyBlock workflows.

It generates editable shader properties from an existing Material, then applies those values to a Renderer using MaterialPropertyBlock. This allows you to create per-object or per-material-slot shader variations without duplicating Materials or modifying shared Material assets.

The package includes two workflows:

• MPBGenerator: A simple single-slot component.
• MPBGeneratorList: An advanced multi-slot component for Renderers using multiple Materials.

MPB Generator can also read Shader Graph Blackboard categories to organize generated properties in a cleaner Inspector layout.

It is useful for decals, hit effects, blood splatter materials, props, shader debugging, per-object visual variations, and workflows where multiple objects share the same Material but need different shader values.

The package includes English and French documentation, along with a Blood Splatter demo scene demonstrating the tool's functionality.