Function gltf_from_rigid 

pub fn gltf_from_rigid(
    value: &RigidModel,
    dependencies: &mut Dependencies,
) -> Result<Gltf>

Converts a RigidModel to glTF format.

This function takes a Total War RigidModel and produces a glTF document that can be saved to disk or further processed.

Arguments

• value - The RigidModel to convert
• dependencies - Dependencies cache for resolving texture references

Returns

A Gltf document containing the converted model data.

LOD Handling

Since glTF doesn’t natively support LOD levels, each LOD from the RigidModel is exported as a separate scene within the glTF document. The first scene (index 0) contains LOD 0 (highest detail).

Mesh Data

For each mesh, the following data is exported:

• Vertex positions (vec3)
• Texture coordinates (vec2, up to 2 sets)
• Vertex normals (vec3) - reconstructed from tangent/bitangent if needed

Materials

Materials are created for each mesh with:

• Base color texture (diffuse map)
• Normal map
• Metallic-roughness properties