move submesh info to new struct

include/renderer.h

@@ -44,22 +44,33 @@ struct SDL_Handles
 // --------------------------
 // Memory allocation WIP
 
-#define MAX_PATH_SIZE 256
-struct render_asset
+struct mesh_asset
 {
 	// header
 	size_t size;
-	uint name_len;
 	uint num_vertices;
 	uint num_indices;
-	render_asset* next;
+	mesh_asset* next;
 
 	// data
-	char* filepath;
 	glm::vec3* vertices;
 	uint* indices;
 	glm::vec3* texture_coords;
 	glm::mat4* model_transform;
+};
+
+#define MAX_PATH_SIZE 256
+struct render_asset
+{
+	// header
+	size_t size;
+	uint num_meshes;
+	uint name_len;
+	render_asset* next;
+
+	// data
+	char* filepath;
+	mesh_asset* meshes;
 	// FIXME: also need to flatten diffuse_texture->pixels and track size of
 	// 	util_image structure, ie) another heaader + pixels
 	util_image* diffuse_texture;