Correctly process meshes with empty material slots

[libs/gl.git] / blender / io_mspgl / export_object.py

diff --git a/blender/io_mspgl/export_object.py b/blender/io_mspgl/export_object.py
index bcd2c6ecfb05c70a0646a603cc0a6456ebd52317..6e399b0199f9f77b10175fe5a4a86027d29a88cc 100644 (file)
--- a/blender/io_mspgl/export_object.py
+++ b/blender/io_mspgl/export_object.py
@@ -6,9 +6,8 @@ class ObjectExporter:
                self.show_progress = True
                self.use_strips = True
                self.use_degen_tris = False
-               self.textures = "REF"
-               self.separate_mesh = False
-               self.separate_tech = False
+               self.use_textures = True
+               self.single_file = True
                self.shared_resources = True
                self.export_lods = True
 
@@ -45,9 +44,16 @@ class ObjectExporter:
        def create_material_exporter(self):
                from .export_material import MaterialExporter
                material_export = MaterialExporter()
-               material_export.textures = self.textures
+               material_export.single_file = self.single_file
+               material_export.use_textures = self.use_textures
                return material_export
 
+       def create_material_map_exporter(self):
+               from .export_material import MaterialMapExporter
+               material_map_export = MaterialMapExporter()
+               material_map_export.single_file = self.single_file
+               return material_map_export
+
        def export_to_file(self, context, out_fn):
                obj = context.active_object
 
@@ -82,24 +88,41 @@ class ObjectExporter:
                        for s in obj_res.statements:
                                s.write_to_file(out_file)
 
-       def export_object_resources(self, context, obj, resources, progress):
+       def export_object_resources(self, context, obj, resources, progress, material_maps=None):
+               if material_maps is None:
+                       material_maps = {}
+
                lods = self.collect_object_lods(obj)
 
                from .mesh import create_mesh_from_object
+               from .material import create_material_map
                mesh_export = self.create_mesh_exporter()
                material_export = self.create_material_exporter()
+               material_map_export = self.create_material_map_exporter()
 
                for i, l in enumerate(lods):
                        lod_index = l.lod_index if l.lod_for_parent else 0
                        progress.push_task_slice("LOD {}".format(lod_index), i, len(lods))
 
-                       mesh_name = l.data.name+".mesh"
-                       if mesh_name not in resources:
-                               mesh = create_mesh_from_object(context, l, progress)
-                               mesh_res = mesh_export.export_mesh(context, mesh, progress)
-                               resources[mesh_name] = mesh_res
+                       material_map = None
+                       mapped_count = sum(m.material_map for m in l.data.materials if m)
+                       if mapped_count:
+                               material_map_tech = l.data.materials[0].technique
+                               tech_mismatch = any(m.technique!=material_map_tech for m in l.data.materials)
+                               if mapped_count!=len(l.data.materials) or tech_mismatch:
+                                       raise Exception("Conflicting settings in object materials")
+
+                               if material_map_tech in material_maps:
+                                       material_map = material_maps[material_map_tech]
+                               else:
+                                       material_map = create_material_map(context, l.data.materials[0])
+                                       material_maps[material_map_tech] = material_map
 
-                       if l.material_slots and l.material_slots[0].material:
+                               tech_name = "material_map_{}.tech".format(os.path.splitext(material_map_tech)[0])
+                               if tech_name not in resources:
+                                       material_map_export.export_technique_resources(material_map, resources)
+                                       resources[tech_name] = material_map_export.export_technique(material_map, resources=resources)
+                       elif l.material_slots and l.material_slots[0].material:
                                material = l.material_slots[0].material
                                tech_name = material.name+".tech"
                                if tech_name not in resources:
@@ -108,6 +131,12 @@ class ObjectExporter:
                        elif "stub.tech" not in resources:
                                resources["stub.tech"] = self.export_stub_technique()
 
+                       mesh_name = l.data.name+".mesh"
+                       if mesh_name not in resources:
+                               mesh = create_mesh_from_object(context, l, progress, material_map=material_map)
+                               mesh_res = mesh_export.export_mesh(context, mesh, progress)
+                               resources[mesh_name] = mesh_res
+
                        progress.pop_task()
 
        def export_object(self, context, obj, progress, *, resources=None):
@@ -131,7 +160,7 @@ class ObjectExporter:
 
                        if l.data.name!=prev_mesh:
                                mesh_res = resources[l.data.name+".mesh"]
-                               if self.separate_mesh:
+                               if not self.single_file:
                                        lod_st.append(obj_res.create_reference_statement("mesh", mesh_res))
                                else:
                                        lod_st.append(obj_res.create_embed_statement("mesh", mesh_res))
@@ -142,14 +171,17 @@ class ObjectExporter:
                        if l.material_slots:
                                material = l.material_slots[0].material
                        if material:
-                               tech_res = resources[material.name+".tech"]
+                               if material.material_map:
+                                       tech_res = resources["material_map_{}.tech".format(os.path.splitext(material.technique)[0])]
+                               else:
+                                       tech_res = resources[material.name+".tech"]
                        else:
                                tech_res = resources["stub.tech"]
 
                        if tech_res.name!=prev_tech:
-                               if material and material.technique and not material.inherit_tech:
+                               if material and not material.material_map and material.technique and not material.inherit_tech:
                                        lod_st.append(Statement("technique", material.technique))
-                               elif self.separate_tech:
+                               elif not self.single_file:
                                        lod_st.append(obj_res.create_reference_statement("technique", tech_res))
                                else:
                                        lod_st.append(obj_res.create_embed_statement("technique", tech_res))