Use keep original textures.

demo/addons/fbx/import_fbx.gd

@@ -37,6 +37,7 @@ func _import_scene(path: String, flags: int, bake_fps: int):
 	var stdout = [].duplicate()
 	var temp_dir_global =  ProjectSettings.globalize_path("res://.godot/imported/")
 	var ret = OS.execute(fbx2gltf_path, [
+		"--keep-originals",
 		"--fbx-temp-dir", temp_dir_global,
 		"-i", path_global,
 		"-o", output_path_global], stdout, true)

src/FBX2glTF.cpp

@@ -52,6 +52,12 @@ int main(int argc, char* argv[]) {
       gltfOptions.embedResources,
       "Inline buffers as data:// URIs within generated non-binary glTF.");
 
+      
+  app.add_flag(
+      "--keep-originals",
+      gltfOptions.keepOriginals,
+      "Keep the originals paths in a non-binary glTF.");
+
   app.add_flag(
       "-t,--separate-textures", gltfOptions.separateTextures, "Write texture files out separately");
 
@@ -307,7 +313,9 @@ int main(int argc, char* argv[]) {
     fmt::printf("Note: Ignoring --embed; it's meaningless with --binary.\n");
   }
   
-  if (outputPath.empty()) {
+  if (gltfOptions.keepOriginals) {
+    outputPath = "./" + FileUtils::GetFileBase(inputPath);
+  } else if (outputPath.empty() && !gltfOptions.keepOriginals) {
     // if -o is not given, default to the basename of the .fbx
     outputPath = "./" + FileUtils::GetFileBase(inputPath);
   }

src/FBX2glTF.h

@@ -90,6 +90,8 @@ struct GltfOptions {
   /** If non-binary, whether to inline all resources, for a single (large) .glTF file. */
   bool embedResources{true};
 
+  bool keepOriginals{false};
+
   bool separateTextures{true};
 
   /** Whether and how to use KHR_draco_mesh_compression to minimize static geometry size. */