diff --git a/game/game.py b/game/game.py
index 7f466d6..ad04a9e 100644
--- a/game/game.py
+++ b/game/game.py
@@ -158,24 +158,26 @@ def create_scene(keyboard, mouse):
     sea_triangles = sea.sea_triangles(64, proj_far_z - 0.1, proj_ratio)
 
     return SceneNode(
-        FuncNode(update_camera, (mouse, camera, environment)),
-        TextureNode((tiles_texture, heightmap, normalmap),
-            ShaderNode(tiles_shader,
-                InputNode(tiles_shader, camera),
-                InputNode(tiles_shader, environment),
-                DrawNode(tiles_batch)
-            )
-        ),
-        FuncNode(update_tests, (blob, cube, clouds)),
-        TextureNode((tests_texture, heightmap, normalmap),
-            ShaderNode(tests_shader,
-                InputNode(tests_shader, camera),
-                InputNode(tests_shader, environment),
-                DrawNode(tests_batch)
+        TextureNode({1: heightmap, 2: normalmap},
+            FuncNode(update_camera, (mouse, camera, environment)),
+            TextureNode({0: tiles_texture},
+                ShaderNode(tiles_shader,
+                    InputNode(tiles_shader, camera),
+                    InputNode(tiles_shader, environment),
+                    DrawNode(tiles_batch)
+                )
+            ),
+            FuncNode(update_tests, (blob, cube, clouds)),
+            TextureNode({0: tests_texture},
+                ShaderNode(tests_shader,
+                    InputNode(tests_shader, camera),
+                    InputNode(tests_shader, environment),
+                    DrawNode(tests_batch)
+                )
             )
         ),
         FuncNode(update_sea, (camera, sea_phase)),
-        TextureNode((sea_polar_textures, sea_detail_texture),
+        TextureNode({0: sea_polar_textures, 1: sea_detail_texture},
             ShaderNode(sea_shader,
                 InputNode(sea_shader, camera),
                 InputNode(sea_shader, environment),
diff --git a/game/scene.py b/game/scene.py
index 67d9fa4..a3a8503 100644
--- a/game/scene.py
+++ b/game/scene.py
@@ -34,10 +34,11 @@ class TextureNode(Node):
         self._textures = textures
 
     def draw(self, time):
-        for slot, texture in enumerate(self._textures):
+        items = self._textures.items()
+        for slot, texture in items:
             texture.select(slot)
         Node.draw(self, time)
-        for slot, texture in enumerate(self._textures):
+        for slot, texture in items:
             texture.unselect(slot)
 
 class ShaderNode(Node):