op

blender/__init__.py

@@ -20,7 +20,7 @@
     "name": "DBMT-Blender-Plugin",
     "description": "DBMT的Blender插件 目前只支持3.6LTS版本",
     "blender": (3, 6, 0),
-    "version": (1, 0, 1, 5),
+    "version": (1, 0, 1, 6),
     "location": "View3D",
     "category": "Generic"
 }

blender/unity/migoto_export.py

@@ -263,6 +263,13 @@ def export_3dmigoto(operator, context, vb_path, ib_path, fmt_path):
     # Write format reference file
     write_fmt_file(open(fmt_path, 'w'), vb, ib)
 
+    # Flush every time export
+    bpy.context.view_layer.update()
+
+    # Force flush make good user experience.
+    bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1)
+
+
 
 class Export3DMigoto(bpy.types.Operator, ExportHelper):
     """Export a mesh for re-injection into a game with 3DMigoto"""

blender/unity/migoto_import.py

@@ -243,25 +243,30 @@ def create_material_with_texture(obj, mesh_name:str, directory:str):
 
 
 def import_3dmigoto_raw_buffers(operator, context, fmt_path:str, vb_path:str, ib_path:str, flip_texcoord_v=True, **kwargs):
-    vb = VertexBuffer(open(fmt_path, 'r'))
-    vb.parse_vb_bin(open(vb_path, 'rb'))
-
-    ib = IndexBuffer(open(fmt_path, 'r'))
-    ib.parse_ib_bin(open(ib_path, 'rb'))
-
 
     # get import prefix
     mesh_name = os.path.basename(fmt_path)
     if mesh_name.endswith(".fmt"):
         mesh_name = mesh_name[0:len(mesh_name) - 4]
 
-    # 创建mesh和Object对象，用于后续填充
+    # create mesh and obj
     mesh = bpy.data.meshes.new(mesh_name)
     obj = bpy.data.objects.new(mesh.name, mesh)
 
-    # 设置坐标系
+    # TODO every game need different coordinate.
     obj.matrix_world = axis_conversion(from_forward='-Z', from_up='Y').to_4x4()
 
+    # check if .ib .vb file is empty, skip empty import.
+    if os.path.getsize(vb_path) == 0 or os.path.getsize(ib_path) == 0:
+        return obj
+
+    # create vb and ib class and read data.
+    vb = VertexBuffer(open(fmt_path, 'r'))
+    vb.parse_vb_bin(open(vb_path, 'rb'))
+
+    ib = IndexBuffer(open(fmt_path, 'r'))
+    ib.parse_ib_bin(open(ib_path, 'rb'))
+
     # Attach the vertex buffer layout to the object for later exporting. Can't
     # seem to retrieve this if attached to the mesh - to_mesh() doesn't copy it:
     obj['3DMigoto:VBLayout'] = vb.layout.serialise()
@@ -270,6 +275,7 @@ def import_3dmigoto_raw_buffers(operator, context, fmt_path:str, vb_path:str, ib
     obj['3DMigoto:IBFormat'] = ib.format
     obj['3DMigoto:FirstIndex'] = ib.first
 
+    # post process for import data.
     import_faces_from_ib(mesh, ib)
 
     (blend_indices, blend_weights, texcoords, vertex_layers, use_normals) = import_vertices(mesh, vb)
@@ -297,7 +303,6 @@ def import_3dmigoto_raw_buffers(operator, context, fmt_path:str, vb_path:str, ib
     obj['3DMigoto:OriginalVertexNumber'] = len(mesh.vertices)
     obj['3DMigoto:OriginalIndicesNumber'] = len(mesh.loops)
 
-
     # Set auto_smooth 89° for unity game's perfect shadow.
     obj.data.use_auto_smooth = True
     # TODO Blender 4.1 remove auto_smooth_angle function.
@@ -311,6 +316,12 @@ def import_3dmigoto_raw_buffers(operator, context, fmt_path:str, vb_path:str, ib
     obj.rotation_euler[1] = 0.0  # Y轴
     obj.rotation_euler[2] = 0.0  # Z轴
 
+    # Flush every time export
+    bpy.context.view_layer.update()
+
+    # Force flush make good user experience.
+    bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1)
+
     return obj