fixes for createMaterialInstance

thermion_dart/lib/thermion_dart/viewer/ffi/thermion_dart.g.dart

@@ -16,6 +16,16 @@ external ffi.Pointer<ffi.Void> make_resource_loader(
   ffi.Pointer<ffi.Void> owner,
 );
 
+@ffi.Native<
+    ffi.Pointer<ffi.Void> Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>,
+        ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>)>(isLeaf: true)
+external ffi.Pointer<ffi.Void> create_filament_viewer(
+  ffi.Pointer<ffi.Void> context,
+  ffi.Pointer<ffi.Void> loader,
+  ffi.Pointer<ffi.Void> platform,
+  ffi.Pointer<ffi.Char> uberArchivePath,
+);
+
 @ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>)>(isLeaf: true)
 external void destroy_filament_viewer(
   ffi.Pointer<ffi.Void> viewer,
@@ -211,13 +221,14 @@ external int load_glb(
 
 @ffi.Native<
     EntityId Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>, ffi.Size,
-        ffi.Bool, ffi.Int)>(isLeaf: true)
+        ffi.Bool, ffi.Int, ffi.Int)>(isLeaf: true)
 external int load_glb_from_buffer(
   ffi.Pointer<ffi.Void> sceneManager,
   ffi.Pointer<ffi.Void> data,
   int length,
   bool keepData,
   int priority,
+  int layer,
 );
 
 @ffi.Native<
@@ -418,7 +429,7 @@ external bool set_morph_animation(
         ffi.Pointer<ffi.Void>, TMaterialKey)>(isLeaf: true)
 external ffi.Pointer<TMaterialInstance> create_material_instance(
   ffi.Pointer<ffi.Void> sceneManager,
-  TMaterialKey key,
+  TMaterialKey materialConfig,
 );
 
 @ffi.Native<

thermion_dart/lib/thermion_dart/viewer/ffi/thermion_viewer_ffi.dart

@@ -2045,7 +2045,6 @@ class ThermionViewerFFI extends ThermionViewer {
       bool hasVolume = false}) async {
     final key = Struct.create<TMaterialKey>();
 
-    // Set all the fields of the TMaterialKey struct
     key.doubleSided = doubleSided;
     key.unlit = unlit;
     key.hasVertexColors = hasVertexColors;
@@ -2058,7 +2057,7 @@ class ThermionViewerFFI extends ThermionViewer {
     key.enableDiagnostics = enableDiagnostics;
     key.unnamed.unnamed.hasMetallicRoughnessTexture =
         hasMetallicRoughnessTexture;
-    key.unnamed.unnamed.metallicRoughnessUV = metallicRoughnessUV;
+    key.unnamed.unnamed.metallicRoughnessUV = 0;
     key.baseColorUV = baseColorUV;
     key.hasClearCoatTexture = hasClearCoatTexture;
     key.clearCoatUV = clearCoatUV;
@@ -2084,14 +2083,11 @@ class ThermionViewerFFI extends ThermionViewer {
     key.hasIOR = hasIOR;
     key.hasVolume = hasVolume;
 
-    // Assuming there's a method to create the MaterialInstance using the key
     final materialInstance = create_material_instance(_sceneManager!, key);
-
     if (materialInstance == nullptr) {
       throw Exception("Failed to create material instance");
     }
 
-    // Don't forget to free the memory allocated for the struct
     return ThermionFFIMaterialInstance(materialInstance);
   }
 
@@ -2100,7 +2096,7 @@ class ThermionViewerFFI extends ThermionViewer {
   ///
   Future destroyMaterialInstance(
       ThermionFFIMaterialInstance materialInstance) async {
-    destroy_material_instance(_viewer!, materialInstance._pointer);
+    destroy_material_instance(_sceneManager!, materialInstance._pointer);
   }
 }