Voxel Builder

Voxel-based 3D modeling application

Version 4.2.8 Beta

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Download
Documentation
Known Issues
FAQ

The online version does not have maximum functionality, be sure to download the Electron package.

Features

File I/O

• Save and load JSON ?
• Import MagicaVoxel VOX
• Export to GLB, GLTF, OBJ, STL ?

Voxelization

• BVH voxelization method
• 3D model voxelizer ?
• Image voxelizer

Model and Paint

• Generators (terrain, cube, sphere, isometric...)
• Interactive modeling toolsets ?
• Symmetric drawing and painting

Rendering

• Real-time GPU path tracing ?

Export Meshes

• Bake voxels to mesh ?
• Unbake mesh to voxels

Extensibility

• ES modules ?
• WebSocket client ?
• User startup project

More

• Extras ?
• Minimum dependency, portable, online and offline
• Ad-free, no trackers, no logging

Supported Browsers

• Electron (recommended)
• Google Chrome for desktop
• Google Chrome for mobile devices

• PWA A2HS-ready (add to home screen)
• Touch pen or Wacom tablet recommended for best experience
• Voxel Builder is made for desktop and mobile, but its features have not been fully tested on mobile devices.

Known Issues

:: Higher than 512K is not recommended
* Electron is recommended for working with a large number of voxels
* For lag-free experience, turn off BVH Picking after 128K
* You cannot turn off BVH Picking when the Rect-Add tool is active

Higher values can have the following problems:
- Unable to quick-save baked meshes (DOMException: exceeded the quota)
- Intolerable delay when starting the real-time renderer
- Chrome tab may freeze or crash

Of course, the number of voxels is unlimited,
I have rendered up to 1 million voxels at 25 FPS.

:: Failed to import GLB meshes for voxelization
Multiple meshes need to have the same properties,
or they won't merge, the only solution is to merge meshes
before exporting to GLB.

:: Linux compatibility issues
- Rendering issues have been reported on linux with nvidia drivers.
- Wacom tablet may throw error "Max number of touches exceeded". (bug)

Update-1: Rendering issues are resolved in the latest Chromium 125.0.6421.0
Update-2: Add optional 'Grid Plane' for linux users

FAQ

:: How to merge vertices after export to GLB?
1- Open exported GLB file in Blender
2- Go to "Modeling" tab and choose vertex selection mode
3- Select all vertices (Ctrl + A)
4- Mesh > Clean Up > Merge by Distance

:: How to run Blender importer script?
1- Save project to JSON
2- Open Blender and go to "Scripting" tab
3- Click "Open" and select "blender-importer.py"
4- Run the script and select a JSON file

History

↑ Voxel engine updated to Thin Instances
↑ Cut half precision (new scene)
↑ Real-time GPU path tracing
↑ Introducing ES modules
↑ Stable beta release
↑ Advancing to the next level (bakery)
↑ Major code rewrite (functions to classes)
↑ Features and uix overhaul
↑ New SPS particles to build the world
↑ I wrote a playground for learning Babylon.js

Latest

Version 3.0.0 (BJS 4) to 4.2.2 (BJS 6)

License

Code released under the MIT license.

Credits

• Babylon.js
• Three.js
• Three-mesh-bvh
• Electron
• MagicaVoxel
• Google Material Icons
• Blender
• Sketchfab
• KhronosGroup
• Shadertoy
• vengi

• Allen Hastings
• David Catuhe
• Erich Loftis
• Eric Heitz
• Evan Wallace
• Garrett Johnson
• Inigo Quilez
• knightcrawler25
• Mr.doob

Available in Babylon.js community demos