PBR Packer
A GPU-accelerated texture packing tool for modern PBR workflows.
PBR Packer combines multiple PBR texture maps into optimized texture sets while providing a real-time physically based preview of the final material. The entire processing pipeline runs on the GPU, allowing fast iteration and responsive editing even with high-resolution textures.
Features
Texture Packing
Pack up to six source textures into two optimized output textures:
Source Map| Destination Base Color| Albedo Texture Ambient Occlusion| Albedo Alpha Roughness| Packed Texture Metallic| Packed Texture Height| Packed Texture Normal Map| Packed Texture
GPU Accelerated Processing
All texture processing is performed on the GPU:
- Channel packing
- AO application
- Roughness conversion
- Normal map reconstruction
- Texture compositing
- Preview rendering
This allows near-instant updates while adjusting settings.
Real-Time PBR Preview
Preview your material before exporting with:
- Physically Based Rendering (PBR)
- HDR environment lighting
- Multiple dynamic lights
- Metallic/Roughness workflow
- Real-time material updates
- Adjustable environment rotation
No need to switch back and forth between your engine and texture editor.
Built-In Utilities
Ambient Occlusion Integration
Optionally multiply AO into Base Color before export:
BaseColor.rgb *= AO
Useful for workflows that prefer baked ambient occlusion.
Roughness / Smoothness Conversion
Automatically convert between:
- Roughness workflows
- Smoothness workflows
Ideal for Unity and custom engine pipelines.
Normal Map Generation
Generate normal maps from height maps directly inside the application.
Channel Packing
Create optimized packed textures for reduced memory usage and fewer texture fetches.
Why Use PBR Packer?
Traditional workflow:
- Open several textures in Photoshop/GIMP
- Pack channels manually
- Export textures
- Import into engine
- Discover issues
- Repeat
With PBR Packer:
- Drag textures into the application
- Adjust settings
- Preview material instantly
- Export
Done.
Performance
The application is designed around GPU processing rather than CPU image manipulation.
Benefits include:
- Fast preview updates
- Responsive UI
- Efficient handling of large textures
- Background exporting
- Minimal workflow interruptions
Supported Maps
Inputs
- Base Color
- Ambient Occlusion
- Roughness
- Metallic
- Height
- Normal
Outputs
- Albedo Texture
- Packed Material Texture
Target Use Cases
- Unity projects (rn only a specific VR workflow TODO:
- Unreal Engine projects
- Custom engines
- Real-time rendering pipelines
- Game asset optimization
- Material authoring workflows
Screenshots
TODO: Add screenshots here:
- Main UI
- Material Preview
- Packed Texture Output
- Export Results
Installation
Download the latest release and run:
PBRPacker.exe
No additional setup required. Or build the latest push in dev branch using by cloning and running build.bat
License
See LICENSE for details.
Acknowledgements
Built for artists, technical artists, and rendering programmers who are tired of manually packing textures.