Moved normal/tangents generation to submeshes

Former-commit-id: d043284a1a5810b429cc76d8bc071010985a523b

src/Nazara/Utility/Loaders/MD2/Loader.cpp

@@ -214,11 +214,11 @@ namespace
 		vertexBuffer->SetPersistent(false);
 		vertexBuffer.release();
 
+		subMesh->GenerateAABB();
+		subMesh->GenerateTangents();
 		subMesh->SetMaterialIndex(0);
 		mesh->AddSubMesh(subMesh.release());
 
-		mesh->GenerateTangents();
-
 		return true;
 	}
 }

src/Nazara/Utility/Loaders/MD5Mesh/Parser.cpp

@@ -343,6 +343,7 @@ bool NzMD5MeshParser::Parse(NzMesh* mesh)
 
 			// Material
 			mesh->SetMaterial(i, baseDir + md5Mesh.shader);
+			subMesh->GenerateNormalsAndTangents();
 			subMesh->SetMaterialIndex(i);
 
 			if (!mesh->AddSubMesh(subMesh.get()))
@@ -355,8 +356,6 @@ bool NzMD5MeshParser::Parse(NzMesh* mesh)
 		}
 	}
 
-	mesh->GenerateNormalsAndTangents();
-
 	return true;
 }