V0.0.4a  - Migrated to Godot!

Now that I have migrated the tool to Godot, it no longer has the limitations of libGDX and gdx-gltf.  Exporting is much more faster, and this platform can support all the GLTF extensions that the meshoptimizer library supports.

libGDX data flow:

GLTF File > gdx-gltf import > libGDX > LWJGL JNI bindings > MeshOptimizer > LWJGL JNI bindings > libGDX > gdx-gltf export > GLTF file

Resulted in 90% of the coding time was translating data structures between layers.

Godot data flow:

GLTF file import > MeshOptimizer > GLTF file export

Godot is only used for the GUI and file handling.

Horrible gdx-gltf limitations:

These are the only GLTF extensions that gdx-gltf support:

• KHR_lights_punctual
• KHR_materials_emissive_strength
• KHR_materials_ior
• KHR_materials_iridescence
• KHR_texture_transform
• KHR_materials_specular
• KHR_materials_transmission
• KHR_materials_unlit
• KHR_texture_transform

In addition to the above extensions, here are the remaining extensions that this NEW version supports:

• KHR_materials_anisotropy
• KHR_materials_clearcoat
• KHR_materials_diffuse_transmission
• KHR_materials_dispersion
• KHR_materials_pbrSpecularGlossiness
  
• KHR_materials_sheen
• KHR_materials_variants
• KHR_materials_volume
• KHR_mesh_quantization
• KHR_texture_basisu
• EXT_mesh_gpu_instancing
  
• EXT_meshopt_compression
• EXT_texture_webp

The last libGDX version of my tool only supported 64k vertices and 32K indices.   None of these issues with this version.