VoxelMaterials

VoxelMaterials allows you to create the metal, emissive and roughness texture map.

VoxelMaterials is a program that I created, initially just for me, to easily generate texture maps for use in game engines without having to create them with blender. It is aimed at people like me who have no experience with programs like blender and just want to be able to add texture maps to their voxel models.

Only works with 256-pixel color palettes that are exported when using the OBJ format.

FOR MAC USERS: 

I haven't been able to try the mac os version and therefore I don't know how to give installation instructions. All i can do is tell you to follow this guide on how to run applications made with godot on mac os that have not been notarized:

https://docs.godotengine.org/en/stable/tutorials/export/running_on_macos.html#do...

FOR GODOT USERS:

remember to put these settings in the "import" tab:

1) disable "fix alpha border" 

2) under "compress" select lossless 

3) remove the filter option.

This must be done with all the textures taken from magicavoxel (or similar programs), not only with the maps generated by my program. If you don't do it the textures could be applied incorrectly on the 3d model.

With godot you also have to use a reflection probe or add a panorma in the WorldEnvironment to get the reflections and the roughness texture work.

IF THE TEXTURE MAPS DON'T WORK IN THE GAME ENGINE:

1) check if filters have been applied

2) make sure there is no need to set up a skybox in the graphics engine to have reflections (like with the godot game engine)

Source code: https://github.com/Nyre221/VoxelMaterials

Donations are appreciated