diff --git a/todo.md b/todo.md
index 6ab3e7e1..6650f191 100644
--- a/todo.md
+++ b/todo.md
@@ -12,9 +12,13 @@
 		* CPU frustum culling
 		* solve banding issues
 		* figure out better light volumes clipping
-		* transparent objects
 		* get rid of diffuse materials
 		* find a better specular model (Blinn-Phong seems to over-shine the specular highlight)
+		* optimize ssao: reconstruct position from depth buffer
+		* more sophisticated objects inputs, support pre-made optimization structured
+		* refactor:
+			* remove copy-paste from shaders & rendering routine
+			* split rendering into separate methods
 * parser
 	* overflow checks for number parsers
 	* recursive parsers