RGBA Texture Packer for Godot

A powerful and flexible Godot editor plugin that allows you to pack multiple textures into a single RGBA image directly inside the editor.

Designed for production workflows, this tool provides full control over channel selection, inversion, resolution scaling, resampling methods, and real-time preview.

Compatible with Godot 4.x.

Features

Channel Packing (RGBA)

• Assign a different texture to each RGBA channel.
• For each assigned texture, you can:
  • Select which channel to use:
    • Red
    • Green
    • Blue
    • Alpha
    • Luminance
  • Invert the selected channel before packing.

This allows maximum flexibility when creating:

• ARM maps (AO, Roughness, Metallic)
• ORM maps
• Custom mask textures
• Any multi-channel packed texture

Resolution Control

When exporting the packed texture, you can:

• Keep the original resolution
• Resize to one of the following presets:
  • 512 x 512
  • 1024 x 1024
  • 2048 x 2048
  • 4096 x 4096

This makes it easy to standardize texture sizes across your project.

Resampling Methods

When resizing, you can choose between:

• Closest
• Linear
• Lanczos

This gives you full control over quality versus performance depending on your needs.

Real-Time Preview

The preview panel allows you to:

• View the final packed RGBA texture
• Switch to preview individual channels (R, G, B, A)

This helps you quickly verify the output before exporting.

Export

At the bottom of the interface, a save button allows you to:

• Choose the destination folder
• Select the filename
• Export the packed image directly from the editor

Typical Use Cases

• Creating ARM (AO-Roughness-Metallic) textures
• Packing masks for shaders
• Optimizing material workflows
• Reducing texture memory usage
• Preparing assets for game-ready pipelines

Installation

1. Download or clone this repository.
2. Copy the addons folder into your Godot project.
3. Open Project > Project Settings > Plugins.
4. Enable the plugin.

The tool will appear in the right dock panel.

Requirements

• Godot 4.x
• Tested in Godot 4.6

License

This project is licensed under the MIT License.