diff --git a/game/game.py b/game/game.py
index ad04a9e..2f5544c 100644
--- a/game/game.py
+++ b/game/game.py
@@ -162,16 +162,14 @@ def create_scene(keyboard, mouse):
             FuncNode(update_camera, (mouse, camera, environment)),
             TextureNode({0: tiles_texture},
                 ShaderNode(tiles_shader,
-                    InputNode(tiles_shader, camera),
-                    InputNode(tiles_shader, environment),
+                    InputNode(tiles_shader, camera, 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),
+                    InputNode(tests_shader, camera, environment),
                     DrawNode(tests_batch)
                 )
             )
@@ -179,9 +177,7 @@ def create_scene(keyboard, mouse):
         FuncNode(update_sea, (camera, sea_phase)),
         TextureNode({0: sea_polar_textures, 1: sea_detail_texture},
             ShaderNode(sea_shader,
-                InputNode(sea_shader, camera),
-                InputNode(sea_shader, environment),
-                InputNode(sea_shader, sea_phase),
+                InputNode(sea_shader, camera, environment, sea_phase),
                 DrawNode(sea_triangles)
             )
         )
diff --git a/game/scene.py b/game/scene.py
index a3a8503..980e0af 100644
--- a/game/scene.py
+++ b/game/scene.py
@@ -53,37 +53,33 @@ class ShaderNode(Node):
         Node.draw(self, time)
         self._shader.unselect()
 
-class InputNode(Node):
-    __slots__ = '_shader', '_input'
+class InputNode:
+    __slots__ = '_shader', '_inputs'
 
-    def __init__(self, shader, input, *subnodes):
-        Node.__init__(self, *subnodes)
+    def __init__(self, shader, *inputs):
         self._shader = shader
-        self._input = input
+        self._inputs = inputs
 
     def draw(self, time):
-        self._input.set_inputs(self._shader)
-        Node.draw(self, time)
+        shader = self._shader
+        for input in self._inputs:
+            input.set_inputs(shader)
 
-class DrawNode(Node):
+class DrawNode:
     __slots__ = '_drawable'
 
-    def __init__(self, drawable, *subnodes):
-        Node.__init__(self, *subnodes)
+    def __init__(self, drawable):
         self._drawable = drawable
 
     def draw(self, time):
         self._drawable.draw()
-        Node.draw(self, time)
 
-class FuncNode(Node):
+class FuncNode:
     __slots__ = '_func', '_params'
 
-    def __init__(self, func, params, *subnodes):
-        Node.__init__(self, *subnodes)
+    def __init__(self, func, params):
         self._func = func
         self._params = params
 
     def draw(self, time):
         self._func(time, *self._params)
-        Node.draw(self, time)