diff --git a/Makefile b/Makefile
index 9aafe07..1b1b4f1 100644
--- a/Makefile
+++ b/Makefile
@@ -47,7 +47,8 @@ SHADERS = \
 	$(BUILD_TYPE)/effect/volume.fxo \
 	$(BUILD_TYPE)/effect/bloom.fxo \
 	$(BUILD_TYPE)/effect/static.fxo \
-	$(BUILD_TYPE)/effect/collada.fxo
+	$(BUILD_TYPE)/effect/collada.fxo \
+	$(BUILD_TYPE)/effect/collada_scene.fxo
 
 $(BUILD_TYPE)/%.res: %.rc $(SHADERS)
 	@mkdir -p $(@D)
@@ -65,7 +66,8 @@ OBJS = \
 	$(BUILD_TYPE)/print.obj \
 	$(BUILD_TYPE)/render_state.obj \
 	$(BUILD_TYPE)/input.obj \
-	$(BUILD_TYPE)/collada.obj
+	$(BUILD_TYPE)/collada.obj \
+	$(BUILD_TYPE)/collada_scene.obj
 
 $(BUILD_TYPE)/d3d10.exe: $(OBJS)
 	@mkdir -p $(@D)
diff --git a/collada/buffer.py b/collada/buffer.py
index 117866a..5f21969 100644
--- a/collada/buffer.py
+++ b/collada/buffer.py
@@ -42,13 +42,7 @@ def mesh_vertex_index_buffer_triangles(collada, mesh, triangles):
     p_stride = max_offset + 1
     offset_table, used_offsets = build_offset_table(collada, triangles, p_stride)
 
-from prettyprinter import pprint, install_extras
-install_extras(include=["dataclasses"])
-
-@dataclass
 class MeshVertexIndexBufferState:
-    index_buffer: List[int]
-
     def __init__(self):
         self.index_buffer = [] # a list of integers
         self.vertex_buffer = [] # a list of floats
diff --git a/collada/header.py b/collada/header.py
index 4a305ac..db1062c 100644
--- a/collada/header.py
+++ b/collada/header.py
@@ -18,7 +18,8 @@ install_extras(include=["dataclasses"])
 class State:
     # arbitrary binary data, including vertex buffers and index
     # buffers
-    buf: BytesIO
+    vertex_buffer: BytesIO
+    index_buffer: BytesIO
 
     # geometry__indices:
     #   keys: collada <geometry> id
@@ -40,7 +41,8 @@ class State:
     emitted_input_elements_arrays: Dict[str, tuple]
 
     def __init__(self):
-        self.buf = BytesIO()
+        self.vertex_buffer = BytesIO()
+        self.index_buffer = BytesIO()
         self.geometry__indices = {}
         self.geometry__vertex_index_tables = {}
         self.node_names = {}
@@ -109,9 +111,9 @@ def render_input_elements(state, collada, geometry_name, offset_tables):
         key = tuple(offset_table_key(offset_table))
         key_name = input_elements_key_name(key)
         if key_name in state.emitted_input_elements_arrays:
-            assert state.emitted_input_elements_arrays[key_name] == key
+            assert state.emitted_input_elements_arrays[key_name][1] == key
             continue
-        state.emitted_input_elements_arrays[key_name] = key
+        state.emitted_input_elements_arrays[key_name] = (i, key)
 
         yield f"input_element const input_elements_{key_name}[] = {{"
         for semantic, semantic_index, stride in key:
@@ -131,14 +133,12 @@ def render_triangles(state, collada, geometry_name, primitive_elements, mesh_buf
 
         key = tuple(offset_table_key(mesh_buffer_state.offset_tables[i]))
         key_name = input_elements_key_name(key)
+        index, _ = state.emitted_input_elements_arrays[key_name]
 
         yield "{"
         yield f".count = {triangles.count}, // triangles"
         yield f".index_offset = {mesh_buffer_state.index_buffer_offsets[i]}, // indices"
-        yield ".inputs = {"
-        yield f".elements = input_elements_{key_name},"
-        yield f".elements_count = {len(key)},"
-        yield "}"
+        yield f".inputs_index = {index}, // index into inputs_list"
         yield "},"
     yield "};"
 
@@ -149,13 +149,13 @@ def render_geometry(state, collada, geometry):
     assert type(mesh) is types.Mesh
     mesh_buffer_state = buffer.mesh_vertex_index_buffer(collada, mesh)
 
-    vertex_buffer_offset = state.buf.tell()
-    renderbin(state.buf, mesh_buffer_state.vertex_buffer, float)
-    vertex_buffer_size = state.buf.tell() - vertex_buffer_offset
+    vertex_buffer_offset = state.vertex_buffer.tell()
+    renderbin(state.vertex_buffer, mesh_buffer_state.vertex_buffer, float)
+    vertex_buffer_size = state.vertex_buffer.tell() - vertex_buffer_offset
 
-    index_buffer_offset = state.buf.tell()
-    renderbin(state.buf, mesh_buffer_state.index_buffer, int)
-    index_buffer_size = state.buf.tell() - index_buffer_offset
+    index_buffer_offset = state.index_buffer.tell()
+    renderbin(state.index_buffer, mesh_buffer_state.index_buffer, int)
+    index_buffer_size = state.index_buffer.tell() - index_buffer_offset
 
     yield from render_triangles(state, collada, geometry_name, mesh.primitive_elements, mesh_buffer_state)
 
@@ -328,12 +328,13 @@ def render_library_visual_scenes(state, collada):
         yield f"&node_{node_name},"
     yield "};"
 
-def render_header():
+def render_header(namespace):
     yield '#include "collada_types.hpp"'
     yield ''
+    yield f'namespace {namespace} {{'
+    yield ''
     yield 'using namespace collada;'
 
-
 def render_opt_color(field_name, color):
     yield f".color = {render_float_tuple(color.value)},"
 
@@ -424,14 +425,38 @@ def render_library_materials(state, collada):
             yield f".effect = &effect_{effect_name},"
             yield "};"
 
-def render_all(collada):
+def render_input_elements_list(state):
+    yield "inputs const inputs_list[] = {"
+    for key_name, (index, key) in state.emitted_input_elements_arrays.items():
+        yield "{"
+        yield f".elements = input_elements_{key_name},"
+        yield f".elements_count = {len(key)},"
+        yield "},"
+    yield "};"
+
+def render_descriptor():
+    yield "descriptor const descriptor = {"
+    yield ".nodes = nodes,"
+    yield ".nodes_count = (sizeof (nodes)) / (sizeof (nodes[0])),"
+    yield ""
+    yield ".inputs_list = inputs_list,"
+    yield ".inputs_list_count = (sizeof (inputs_list)) / (sizeof (inputs_list[0])),"
+    yield "};"
+
+def render_end_of_namespace():
+    yield "}"
+
+def render_all(collada, namespace):
     state = State()
     render, out = renderer()
-    render(render_header())
+    render(render_header(namespace))
     render(render_library_effects(state, collada))
     render(render_library_materials(state, collada))
     render(render_library_geometries(state, collada))
     render(render_library_visual_scenes(state, collada))
+    render(render_input_elements_list(state))
+    render(render_descriptor())
+    render(render_end_of_namespace())
     return state, out
 
 if __name__ == "__main__":
@@ -442,5 +467,5 @@ if __name__ == "__main__":
     #assert type(skin) is types.Skin
     #foo = render_inverse_bind_matrix(collada, skin)
 
-    state, out = render_all(collada)
+    state, out = render_all(collada, "test")
     print(out.getvalue())
diff --git a/collada/main.py b/collada/main.py
index 99da452..fd95b5e 100644
--- a/collada/main.py
+++ b/collada/main.py
@@ -1,4 +1,5 @@
 import sys
+from os import path
 
 from collada import parse
 from collada import header
@@ -6,30 +7,36 @@ from collada import header
 def usage():
     name = sys.argv[0]
     print("usage:")
-    print(f"  {name} [input_collada.dae] [output_header.hpp] [output_binary.bin]")
+    print(f"  {name} [input_collada.dae] [output_header.hpp] [output_vertex.vtx] [output_vertex.idx]")
     sys.exit(1)
 
 def main():
     try:
         input_collada = sys.argv[1]
         output_header = sys.argv[2]
-        output_binary = sys.argv[3]
+        output_vertex = sys.argv[3]
+        output_index  = sys.argv[4]
         assert input_collada.lower().endswith(".dae")
         assert output_header.lower().endswith(".hpp")
-        assert output_binary.lower().endswith(".bin")
-    except:
+        assert output_vertex.lower().endswith(".vtx")
+        assert output_index.lower().endswith(".idx")
+    except Exception as e:
         usage()
 
     collada = parse.parse_collada_file(input_collada)
-    state, out = header.render_all(collada)
+    namespace = path.splitext(path.split(input_collada)[1])[0]
+    state, out = header.render_all(collada, namespace)
 
     with open(output_header, 'wb') as f:
         header_buf = out.getvalue()
         assert "\r\n" in header_buf
         f.write(header_buf.encode('utf-8'))
 
-    with open(output_binary, 'wb') as f:
-        f.write(state.buf.getvalue())
+    with open(output_vertex, 'wb') as f:
+        f.write(state.vertex_buffer.getvalue())
+
+    with open(output_index, 'wb') as f:
+        f.write(state.index_buffer.getvalue())
 
 if __name__ == "__main__":
     main()
diff --git a/include/collada_scene.hpp b/include/collada_scene.hpp
new file mode 100644
index 0000000..96961f4
--- /dev/null
+++ b/include/collada_scene.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "collada_types.hpp"
+
+namespace collada_scene {
+
+  struct scene_state {
+    const UINT numBuffers = 1; // FIXME
+    const UINT strides[1] = {3 * 3 * 4}; // FIXME
+    const UINT offsets[1] = {0}; // FIXME
+
+    ID3D10Buffer * pVertexBuffers[1] = {}; // FIXME
+    ID3D10Buffer * pIndexBuffer = NULL;
+
+    ID3D10InputLayout ** pVertexLayouts = NULL;
+
+    HRESULT load_vertex_buffer(LPCWSTR name);
+    HRESULT load_index_buffer(LPCWSTR name);
+    HRESULT load_layout(int inputs_index, collada::inputs const& inputs);
+    HRESULT load_layouts(collada::descriptor const& descriptor);
+  };
+
+  HRESULT LoadScene(collada::descriptor const& descriptor, scene_state& state);
+  void Render(collada::descriptor const& descriptor, scene_state const& state);
+}
diff --git a/include/collada_types.hpp b/include/collada_types.hpp
index fe6c71c..02cd981 100644
--- a/include/collada_types.hpp
+++ b/include/collada_types.hpp
@@ -56,8 +56,13 @@ namespace collada {
   //////////////////////////////////////////////////////////////////////
 
   enum class input_format {
+    FLOAT1,
+    FLOAT2,
     FLOAT3,
     FLOAT4,
+    INT1,
+    INT2,
+    INT3,
     INT4,
   };
 
@@ -76,7 +81,7 @@ namespace collada {
   struct triangles {
     int const count;
     int const index_offset;
-    inputs const inputs;
+    int const inputs_index;
   };
 
   struct mesh {
@@ -138,7 +143,6 @@ namespace collada {
     NODE,
   };
 
-
   struct color_or_texture {
     union {
       float4 color;
@@ -236,4 +240,12 @@ namespace collada {
     node const * const nodes;
     int const nodes_count;
   };
+
+  struct descriptor {
+    node const * const * const nodes;
+    int const nodes_count;
+
+    inputs const * inputs_list;
+    int const inputs_list_count;
+  };
 }
diff --git a/include/scenes/curve_interpolation.hpp b/include/scenes/curve_interpolation.hpp
new file mode 100644
index 0000000..3e3f34d
--- /dev/null
+++ b/include/scenes/curve_interpolation.hpp
@@ -0,0 +1,529 @@
+#include "collada_types.hpp"
+
+namespace curve_interpolation {
+
+using namespace collada;
+
+effect const effect_material__15 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {0.6705883f, 0.5843138f, 1.0f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.6705883f, 0.5843138f, 1.0f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_material__16 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {0.5803922f, 1.0f, 0.9647059f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.5803922f, 1.0f, 0.9647059f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_material__17 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {0.6509804f, 1.0f, 0.5803922f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.6509804f, 1.0f, 0.5803922f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_material__18 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {0.9333334f, 1.0f, 0.5647059f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.9333334f, 1.0f, 0.5647059f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_material__19 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {1.0f, 0.7686275f, 0.5803922f, 1.0f},
+    },
+    .diffuse = {
+      .color = {1.0f, 0.7686275f, 0.5803922f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_material__20 = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .color = {1.0f, 0.5803922f, 0.5803922f, 1.0f},
+    },
+    .diffuse = {
+      .color = {1.0f, 0.5803922f, 0.5803922f, 1.0f},
+    },
+    .specular = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_coloreffectr229g154b215 = {
+  .type = effect_type::PHONG,
+  .phong = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 0.0f},
+    },
+    .ambient = {
+      .color = {0.8980392f, 0.6039216f, 0.8431373f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.8980392f, 0.6039216f, 0.8431373f, 1.0f},
+    },
+    .specular = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_coloreffectr28g149b177 = {
+  .type = effect_type::PHONG,
+  .phong = {
+    .emission = {
+      .color = {0.0f, 0.0f, 0.0f, 0.0f},
+    },
+    .ambient = {
+      .color = {0.1098039f, 0.5843137f, 0.6941176f, 1.0f},
+    },
+    .diffuse = {
+      .color = {0.1098039f, 0.5843137f, 0.6941176f, 1.0f},
+    },
+    .specular = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+material const material_coloreffectr229g154b215_material = {
+  .effect = &effect_coloreffectr229g154b215,
+};
+
+material const material_coloreffectr28g149b177_material = {
+  .effect = &effect_coloreffectr28g149b177,
+};
+
+material const material_material__15_material = {
+  .effect = &effect_material__15,
+};
+
+material const material_material__16_material = {
+  .effect = &effect_material__16,
+};
+
+material const material_material__17_material = {
+  .effect = &effect_material__17,
+};
+
+material const material_material__18_material = {
+  .effect = &effect_material__18,
+};
+
+material const material_material__19_material = {
+  .effect = &effect_material__19,
+};
+
+material const material_material__20_material = {
+  .effect = &effect_material__20,
+};
+
+input_element const input_elements_position_0_3_normal_0_3_texcoord_0_3[] = {
+  {
+    .semantic = "POSITION",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+  {
+    .semantic = "NORMAL",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+  {
+    .semantic = "TEXCOORD",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+};
+
+triangles const triangles_geom_cube[] = {
+  {
+    .count = 2, // triangles
+    .index_offset = 0, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 2, // triangles
+    .index_offset = 6, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 2, // triangles
+    .index_offset = 12, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 2, // triangles
+    .index_offset = 18, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 2, // triangles
+    .index_offset = 24, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 2, // triangles
+    .index_offset = 30, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+};
+
+geometry const geometry_geom_cube = {
+  .mesh = {
+    .triangles = triangles_geom_cube,
+    .triangles_count = 6,
+
+    .vertex_buffer_offset = 0,
+    .vertex_buffer_size = 864,
+
+    .index_buffer_offset = 0,
+    .index_buffer_size = 144,
+  }
+};
+
+triangles const triangles_geom_cylinder001[] = {
+  {
+    .count = 30, // triangles
+    .index_offset = 0, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+};
+
+geometry const geometry_geom_cylinder001 = {
+  .mesh = {
+    .triangles = triangles_geom_cylinder001,
+    .triangles_count = 1,
+
+    .vertex_buffer_offset = 864,
+    .vertex_buffer_size = 1152,
+
+    .index_buffer_offset = 144,
+    .index_buffer_size = 360,
+  }
+};
+
+triangles const triangles_geom_plane001[] = {
+  {
+    .count = 2, // triangles
+    .index_offset = 0, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+};
+
+geometry const geometry_geom_plane001 = {
+  .mesh = {
+    .triangles = triangles_geom_plane001,
+    .triangles_count = 1,
+
+    .vertex_buffer_offset = 2016,
+    .vertex_buffer_size = 144,
+
+    .index_buffer_offset = 504,
+    .index_buffer_size = 24,
+  }
+};
+
+geometry const * const geometries[] = {
+  &geometry_geom_cube,
+  &geometry_geom_cylinder001,
+  &geometry_geom_plane001,
+};
+
+transform const transforms_node_environmentambientlight[] = {
+};
+
+instance_geometry const instance_geometries_node_environmentambientlight[] = {
+};
+
+node const node_node_environmentambientlight = {
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_environmentambientlight,
+  .transforms_count = 0,
+
+  .instance_geometries = instance_geometries_node_environmentambientlight,
+  .instance_geometries_count = 0,
+};
+
+transform const transforms_node_cube[] = {
+  {
+    .type = transform_type::TRANSLATE,
+    .translate = {10.0f, 0.0f, 0.0f},
+  },
+};
+
+instance_material const instance_materials_node_cube_0[] = {
+  {
+    .element_index = 1, // an index into mesh.triangles
+    .material = &material_material__15_material,
+  },
+  {
+    .element_index = 5, // an index into mesh.triangles
+    .material = &material_material__17_material,
+  },
+  {
+    .element_index = 3, // an index into mesh.triangles
+    .material = &material_material__18_material,
+  },
+  {
+    .element_index = 2, // an index into mesh.triangles
+    .material = &material_material__19_material,
+  },
+  {
+    .element_index = 0, // an index into mesh.triangles
+    .material = &material_material__16_material,
+  },
+  {
+    .element_index = 4, // an index into mesh.triangles
+    .material = &material_material__20_material,
+  },
+};
+
+instance_geometry const instance_geometries_node_cube[] = {
+  {
+    .geometry = &geometry_geom_cube,
+    .instance_materials = instance_materials_node_cube_0,
+    .instance_materials_count = 6,
+  },
+};
+
+node const node_node_cube = {
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_cube,
+  .transforms_count = 1,
+
+  .instance_geometries = instance_geometries_node_cube,
+  .instance_geometries_count = 1,
+};
+
+transform const transforms_node_cylinder001[] = {
+};
+
+instance_material const instance_materials_node_cylinder001_0[] = {
+  {
+    .element_index = 0, // an index into mesh.triangles
+    .material = &material_coloreffectr229g154b215_material,
+  },
+};
+
+instance_geometry const instance_geometries_node_cylinder001[] = {
+  {
+    .geometry = &geometry_geom_cylinder001,
+    .instance_materials = instance_materials_node_cylinder001_0,
+    .instance_materials_count = 1,
+  },
+};
+
+node const node_node_cylinder001 = {
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_cylinder001,
+  .transforms_count = 0,
+
+  .instance_geometries = instance_geometries_node_cylinder001,
+  .instance_geometries_count = 1,
+};
+
+transform const transforms_node_plane001[] = {
+  {
+    .type = transform_type::TRANSLATE,
+    .translate = {0.0f, 0.0f, 0.01f},
+  },
+  {
+    .type = transform_type::ROTATE,
+    .rotate = {0.0f, 0.0f, -1.0f, -44.99999f},
+  },
+};
+
+instance_material const instance_materials_node_plane001_0[] = {
+  {
+    .element_index = 0, // an index into mesh.triangles
+    .material = &material_coloreffectr28g149b177_material,
+  },
+};
+
+instance_geometry const instance_geometries_node_plane001[] = {
+  {
+    .geometry = &geometry_geom_plane001,
+    .instance_materials = instance_materials_node_plane001_0,
+    .instance_materials_count = 1,
+  },
+};
+
+node const node_node_plane001 = {
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_plane001,
+  .transforms_count = 2,
+
+  .instance_geometries = instance_geometries_node_plane001,
+  .instance_geometries_count = 1,
+};
+
+node const * const nodes[] = {
+  &node_node_environmentambientlight,
+  &node_node_cube,
+  &node_node_cylinder001,
+  &node_node_plane001,
+};
+
+inputs const inputs_list[] = {
+  {
+    .elements = input_elements_position_0_3_normal_0_3_texcoord_0_3,
+    .elements_count = 3,
+  },
+};
+
+descriptor const descriptor = {
+  .nodes = nodes,
+  .nodes_count = (sizeof (nodes)) / (sizeof (nodes[0])),
+
+  .inputs_list = inputs_list,
+  .inputs_list_count = (sizeof (inputs_list)) / (sizeof (inputs_list[0])),
+};
+
+}
diff --git a/main.rc b/main.rc
index 32888a1..18746d6 100644
--- a/main.rc
+++ b/main.rc
@@ -7,4 +7,8 @@ RES_PERLIN RCDATA "texture/perlin.data"
 RES_ROBOT_PLAYER RCDATA "models/robot_player/robot_player.data"
 RES_FONT_TERMINUS_6X12 RCDATA "font/terminus_128x64_6x12.data"
 
-RES_COLLADA_FXO RCDATA "collada.fxo"
\ No newline at end of file
+RES_COLLADA_FXO RCDATA "collada.fxo"
+
+RES_COLLADA_SCENE_FXO RCDATA "collada_scene.fxo"
+RES_MODELS_CURVE_INTERPOLATION_VTX RCDATA "models/curve_interpolation/curve_interpolation.vtx"
+RES_MODELS_CURVE_INTERPOLATION_IDX RCDATA "models/curve_interpolation/curve_interpolation.idx"
diff --git a/models/curve_interpolation/curve_interpolation.DAE b/models/curve_interpolation/curve_interpolation.DAE
index c3b7b21..eeb1d4f 100755
--- a/models/curve_interpolation/curve_interpolation.DAE
+++ b/models/curve_interpolation/curve_interpolation.DAE
@@ -1,448 +1,792 @@
-<?xml version="1.0" encoding="utf-8"?>
-<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <asset>
-    <contributor>
-      <author>bilbo</author>
-      <authoring_tool>OpenCOLLADA for 3ds Max;  Version: 1.6;  Revision: 68</authoring_tool>
-      <source_data>file:///C:/cygwin/home/bilbo/d3d10/models/curve_interpolation/curve_interpolation.max</source_data>
-    </contributor>
-    <created>2026-01-24T21:02:20</created>
-    <modified>2026-01-24T21:02:20</modified>
-    <unit name="inch" meter="0.0254"/>
-    <up_axis>Z_UP</up_axis>
-  </asset>
-  <library_effects>
-    <effect id="ColorEffectR26G177B26">
-      <profile_COMMON>
-        <technique sid="common">
-          <phong>
-            <ambient>
-              <color>0.1019608 0.6941176 0.1019608 1</color>
-            </ambient>
-            <diffuse>
-              <color>0.1019608 0.6941176 0.1019608 1</color>
-            </diffuse>
-            <specular>
-              <color>1 1 1 1</color>
-            </specular>
-            <shininess>
-              <float>10</float>
-            </shininess>
-            <reflective>
-              <color>0 0 0 1</color>
-            </reflective>
-            <transparent>
-              <color>1 1 1 1</color>
-            </transparent>
-            <transparency>
-              <float>1</float>
-            </transparency>
-          </phong>
-        </technique>
-      </profile_COMMON>
-    </effect>
-    <effect id="ColorEffectR229G154B215">
-      <profile_COMMON>
-        <technique sid="common">
-          <phong>
-            <ambient>
-              <color>0.8980392 0.6039216 0.8431373 1</color>
-            </ambient>
-            <diffuse>
-              <color>0.8980392 0.6039216 0.8431373 1</color>
-            </diffuse>
-            <specular>
-              <color>1 1 1 1</color>
-            </specular>
-            <shininess>
-              <float>10</float>
-            </shininess>
-            <reflective>
-              <color>0 0 0 1</color>
-            </reflective>
-            <transparent>
-              <color>1 1 1 1</color>
-            </transparent>
-            <transparency>
-              <float>1</float>
-            </transparency>
-          </phong>
-        </technique>
-      </profile_COMMON>
-    </effect>
-    <effect id="ColorEffectR28G149B177">
-      <profile_COMMON>
-        <technique sid="common">
-          <phong>
-            <ambient>
-              <color>0.1098039 0.5843137 0.6941176 1</color>
-            </ambient>
-            <diffuse>
-              <color>0.1098039 0.5843137 0.6941176 1</color>
-            </diffuse>
-            <specular>
-              <color>1 1 1 1</color>
-            </specular>
-            <shininess>
-              <float>10</float>
-            </shininess>
-            <reflective>
-              <color>0 0 0 1</color>
-            </reflective>
-            <transparent>
-              <color>1 1 1 1</color>
-            </transparent>
-            <transparency>
-              <float>1</float>
-            </transparency>
-          </phong>
-        </technique>
-      </profile_COMMON>
-    </effect>
-  </library_effects>
-  <library_materials>
-    <material id="ColorEffectR26G177B26-material" name="ColorEffectR26G177B26-material">
-      <instance_effect url="#ColorEffectR26G177B26"/>
-    </material>
-    <material id="ColorEffectR229G154B215-material" name="ColorEffectR229G154B215-material">
-      <instance_effect url="#ColorEffectR229G154B215"/>
-    </material>
-    <material id="ColorEffectR28G149B177-material" name="ColorEffectR28G149B177-material">
-      <instance_effect url="#ColorEffectR28G149B177"/>
-    </material>
-  </library_materials>
-  <library_geometries>
-    <geometry id="geom-Cube" name="Cube">
-      <mesh>
-        <source id="geom-Cube-positions">
-          <float_array id="geom-Cube-positions-array" count="24">-0.5 -0.5 0 0.5 -0.5 0 -0.5 0.5 0 0.5 0.5 0 -0.5 -0.5 1 0.5 -0.5 1 -0.5 0.5 1 0.5 0.5 1</float_array>
-          <technique_common>
-            <accessor source="#geom-Cube-positions-array" count="8" stride="3">
-              <param name="X" type="float"/>
-              <param name="Y" type="float"/>
-              <param name="Z" type="float"/>
-            </accessor>
-          </technique_common>
-        </source>
-        <source id="geom-Cube-normals">
-          <float_array id="geom-Cube-normals-array" count="72">0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 1 0 0 1 0 0 1 0 0 1 0 -1 0 0 -1 0 0 -1 0 0 -1 0 1 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0</float_array>
-          <technique_common>
-            <accessor source="#geom-Cube-normals-array" count="24" stride="3">
-              <param name="X" type="float"/>
-              <param name="Y" type="float"/>
-              <param name="Z" type="float"/>
-            </accessor>
-          </technique_common>
-        </source>
-        <source id="geom-Cube-map1">
-          <float_array id="geom-Cube-map1-array" count="36">0 0 0 1 0 0 0 1 0 1 1 0 0 0 0 1 0 0 0 1 0 1 1 0 0 0 0 1 0 0 0 1 0 1 1 0</float_array>
-          <technique_common>
-            <accessor source="#geom-Cube-map1-array" count="12" stride="3">
-              <param name="S" type="float"/>
-              <param name="T" type="float"/>
-              <param name="P" type="float"/>
-            </accessor>
-          </technique_common>
-        </source>
-        <vertices id="geom-Cube-vertices">
-          <input semantic="POSITION" source="#geom-Cube-positions"/>
-        </vertices>
-        <triangles material="ColorMaterial" count="12">
-          <input semantic="VERTEX" source="#geom-Cube-vertices" offset="0"/>
-          <input semantic="NORMAL" source="#geom-Cube-normals" offset="1"/>
-          <input semantic="TEXCOORD" source="#geom-Cube-map1" offset="2" set="0"/>
-          <p>0 0 9 2 1 11 3 2 10 3 2 10 1 3 8 0 0 9 4 4 8 5 5 9 7 6 11 7 6 11 6 7 10 4 4 8 0 8 4 1 9 5 5 10 7 5 10 7 4 11 6 0 8 4 1 12 0 3 13 1 7 14 3 7 14 3 5 15 2 1 12 0 3 16 4 2 17 5 6 18 7 6 18 7 7 19 6 3 16 4 2 20 0 0 21 1 4 22 3 4 22 3 6 23 2 2 20 0</p>
-        </triangles>
-      </mesh>
-      <extra>
-        <technique profile="OpenCOLLADA3dsMax">
-          <max_box>
-            <length sid="length" type="float">1</length>
-            <width sid="width" type="float">1</width>
-            <height sid="height" type="float">1</height>
-            <widthsegments sid="widthsegments" type="int">1</widthsegments>
-            <lengthsegments sid="lengthsegments" type="int">1</lengthsegments>
-            <heightsegments sid="heightsegments" type="int">1</heightsegments>
-            <generateuvs sid="generateuvs" type="int">1</generateuvs>
-          </max_box>
-        </technique>
-      </extra>
-    </geometry>
-    <geometry id="geom-Cylinder001" name="Cylinder001">
-      <mesh>
-        <source id="geom-Cylinder001-positions">
-          <float_array id="geom-Cylinder001-positions-array" count="96">10 0 0 9.807853 1.950903 0 9.238795 3.826834 0 8.314696 5.555702 0 7.071068 7.071068 0 5.555702 8.314696 0 3.826834 9.238795 0 1.950904 9.807853 0 7.54979e-7 10 0 -1.950902 9.807853 0 -3.826833 9.238796 0 -5.555702 8.314696 0 -7.071068 7.071068 0 -8.314696 5.555702 0 -9.238796 3.826833 0 -9.807854 1.950901 0 -10 -3.25841e-6 0 -9.807852 -1.950907 0 -9.238793 -3.826839 0 -8.314693 -5.555707 0 -7.071063 -7.071073 0 -5.555696 -8.3147 0 -3.826827 -9.238798 0 -1.950894 -9.807855 0 9.65599e-6 -10 0 1.950913 -9.807851 0 3.826845 -9.238791 0 5.555712 -8.31469 0 7.071077 -7.071059 0 8.314704 -5.555691 0 9.238801 -3.826821 0 9.807856 -1.950888 0</float_array>
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+        <input semantic="INPUT" source="#node-Cube_translation.X-input"/>
+        <input semantic="OUTPUT" source="#node-Cube_translation.X-output"/>
+        <input semantic="IN_TANGENT" source="#node-Cube_translation.X-intangent"/>
+        <input semantic="OUT_TANGENT" source="#node-Cube_translation.X-outtangent"/>
+        <input semantic="INTERPOLATION" source="#node-Cube_translation.X-interpolation"/>
+      </sampler>
+      <sampler id="node-Cube_translation.Y-sampler">
+        <input semantic="INPUT" source="#node-Cube_translation.Y-input"/>
+        <input semantic="OUTPUT" source="#node-Cube_translation.Y-output"/>
+        <input semantic="IN_TANGENT" source="#node-Cube_translation.Y-intangent"/>
+        <input semantic="OUT_TANGENT" source="#node-Cube_translation.Y-outtangent"/>
+        <input semantic="INTERPOLATION" source="#node-Cube_translation.Y-interpolation"/>
+      </sampler>
+      <channel source="#node-Cube_translation.X-sampler" target="node-Cube/translation.X"/>
+      <channel source="#node-Cube_translation.Y-sampler" target="node-Cube/translation.Y"/>
+    </animation>
+  </library_animations>
+  <scene>
+    <instance_visual_scene url="#MaxScene"/>
+  </scene>
 </COLLADA>
\ No newline at end of file
diff --git a/models/curve_interpolation/curve_interpolation.idx b/models/curve_interpolation/curve_interpolation.idx
new file mode 100644
index 0000000..f1f1a85
Binary files /dev/null and b/models/curve_interpolation/curve_interpolation.idx differ
diff --git a/models/curve_interpolation/curve_interpolation.max b/models/curve_interpolation/curve_interpolation.max
index 3e709d6..db1884c 100755
Binary files a/models/curve_interpolation/curve_interpolation.max and b/models/curve_interpolation/curve_interpolation.max differ
diff --git a/models/curve_interpolation/curve_interpolation.vtx b/models/curve_interpolation/curve_interpolation.vtx
new file mode 100644
index 0000000..76208f7
Binary files /dev/null and b/models/curve_interpolation/curve_interpolation.vtx differ
diff --git a/src/collada.cpp b/src/collada.cpp
index b541c22..f39a48a 100644
--- a/src/collada.cpp
+++ b/src/collada.cpp
@@ -313,14 +313,25 @@ namespace collada {
     //XMConvertToRadians
     XMVECTOR axis = XMVectorSet(0, 1, 0, 0);
     XMVECTOR axisZ = XMVectorSet(0, 0, 1, 0);
-    XMMATRIX joint0
-      = XMMatrixRotationNormal(axis, XMConvertToRadians(-90))
-      ;
-    XMMATRIX joint1
-      = XMMatrixRotationNormal(axisZ, sin(t))
-      * XMMatrixTranslation(10, 0, 0)
-      * joint0
+    XMMATRIX joint0 = XMMatrixScaling(1, 1, 1);
+    joint0 = XMMatrixTranslation(10, 0, 0) * joint0;
+    joint0 = XMMatrixRotationNormal(axis, XMConvertToRadians(-90)) * joint0;
+
+    XMMATRIX joint1 = XMMatrixScaling(1, 1, 1);
+
+    /*
+    joint1 = joint1 * XMMatrixRotationNormal(axisZ, sin(t));
+    joint1 = joint1 * XMMatrixTranslation(10, 0, 0);
+    joint1 = joint1 * joint0;
+    */
+
+    joint1 = joint0 * joint1;
+    joint1 = XMMatrixTranslation(10, 0, 0) * joint1;
+    joint1 = XMMatrixRotationNormal(axisZ, sin(t)) * joint1;
+    /*
+      = XMMatrixRotationNormal(axisZ, sin(t)) * XMMatrixTranslation(10, 0, 0) * joint0
       ;
+    */
 
     XMMATRIX joint0ibm = XMLoadFloat4x4((XMFLOAT4X4*)&inverse_bind_matrices[0 * 16]);
     XMMATRIX joint1ibm = XMLoadFloat4x4((XMFLOAT4X4*)&inverse_bind_matrices[1 * 16]);
diff --git a/src/collada_scene.cpp b/src/collada_scene.cpp
new file mode 100644
index 0000000..d955f38
--- /dev/null
+++ b/src/collada_scene.cpp
@@ -0,0 +1,285 @@
+#include <windows.h>
+#include <d3d10.h>
+#include <assert.h>
+
+#include "directxmath/directxmath.h"
+
+#include "print.hpp"
+#include "collada_scene.hpp"
+
+extern ID3D10Device * g_pd3dDevice;
+extern XMMATRIX g_View;
+extern XMMATRIX g_Projection;
+
+namespace collada_scene {
+  using namespace collada;
+
+  ID3D10Effect * g_pEffect = NULL;
+  ID3D10EffectTechnique * g_pTechniqueBlinn = NULL;
+
+  ID3D10EffectMatrixVariable * g_pWorldVariable = NULL;
+  ID3D10EffectMatrixVariable * g_pViewVariable = NULL;
+  ID3D10EffectMatrixVariable * g_pProjectionVariable = NULL;
+
+  static inline DXGI_FORMAT dxgi_format(input_format format)
+  {
+    switch (format) {
+    case input_format::FLOAT1: return DXGI_FORMAT_R32_FLOAT;
+    case input_format::FLOAT2: return DXGI_FORMAT_R32G32_FLOAT;
+    case input_format::FLOAT3: return DXGI_FORMAT_R32G32B32_FLOAT;
+    case input_format::FLOAT4: return DXGI_FORMAT_R32G32B32A32_FLOAT;
+    default:
+      assert(false);
+    }
+  }
+
+  static inline int format_size(input_format format)
+  {
+    switch (format) {
+    case input_format::FLOAT1: return 1 * 4;
+    case input_format::FLOAT2: return 2 * 4;
+    case input_format::FLOAT3: return 3 * 4;
+    case input_format::FLOAT4: return 4 * 4;
+    default:
+      assert(false);
+    }
+  }
+
+  HRESULT scene_state::load_vertex_buffer(LPCWSTR name)
+  {
+    HRESULT hr;
+    HRSRC hRes = FindResource(NULL, name, RT_RCDATA);
+    if (hRes == NULL) {
+      printW(L"FindResource %s\n", name);
+      return E_FAIL;
+    }
+    DWORD dwResSize = SizeofResource(NULL, hRes);
+    void * pData = LockResource(LoadResource(NULL, hRes));
+
+    D3D10_BUFFER_DESC bd;
+    D3D10_SUBRESOURCE_DATA initData;
+
+    bd.Usage = D3D10_USAGE_IMMUTABLE;
+    bd.ByteWidth = dwResSize;
+    bd.BindFlags = D3D10_BIND_VERTEX_BUFFER;
+    bd.CPUAccessFlags = 0;
+    bd.MiscFlags = 0;
+    initData.pSysMem = pData;
+    hr = g_pd3dDevice->CreateBuffer(&bd, &initData, &pVertexBuffers[0]);
+    if (FAILED(hr)) {
+      print("CreateBuffer: D3D10_BIND_VERTEX_BUFFER\n");
+      return hr;
+    }
+
+    return S_OK;
+  }
+
+  HRESULT scene_state::load_index_buffer(LPCWSTR name)
+  {
+    HRESULT hr;
+    HRSRC hRes = FindResource(NULL, name, RT_RCDATA);
+    if (hRes == NULL) {
+      printW(L"FindResource %s\n", name);
+      return E_FAIL;
+    }
+    DWORD dwResSize = SizeofResource(NULL, hRes);
+    void * pData = LockResource(LoadResource(NULL, hRes));
+
+    D3D10_BUFFER_DESC bd;
+    D3D10_SUBRESOURCE_DATA initData;
+
+    bd.Usage = D3D10_USAGE_IMMUTABLE;
+    bd.ByteWidth = dwResSize;
+    bd.BindFlags = D3D10_BIND_VERTEX_BUFFER;
+    bd.CPUAccessFlags = 0;
+    bd.MiscFlags = 0;
+    initData.pSysMem = pData;
+    hr = g_pd3dDevice->CreateBuffer(&bd, &initData, &pIndexBuffer);
+    if (FAILED(hr)) {
+      print("CreateBuffer: D3D10_BIND_VERTEX_BUFFER\n");
+      return hr;
+    }
+
+    return S_OK;
+  }
+
+  HRESULT scene_state::load_layout(int inputs_index, inputs const& inputs)
+  {
+    HRESULT hr;
+
+    D3D10_INPUT_ELEMENT_DESC layout[inputs.elements_count];
+
+    int byte_offset = 0;
+    for (int i = 0; i < inputs.elements_count; i++) {
+      layout[i].SemanticName = inputs.elements[i].semantic;
+      layout[i].SemanticIndex = inputs.elements[i].semantic_index;
+      layout[i].Format = dxgi_format(inputs.elements[i].format);
+      layout[i].InputSlot = 0;
+      layout[i].AlignedByteOffset = byte_offset;
+      layout[i].InputSlotClass = D3D10_INPUT_PER_VERTEX_DATA;
+      layout[i].InstanceDataStepRate = 0;
+
+      byte_offset += format_size(inputs.elements[i].format);
+    }
+
+    D3D10_PASS_DESC passDesc;
+    g_pTechniqueBlinn->GetPassByIndex(0)->GetDesc(&passDesc);
+
+    hr = g_pd3dDevice->CreateInputLayout(layout, inputs.elements_count,
+                                         passDesc.pIAInputSignature,
+                                         passDesc.IAInputSignatureSize,
+                                         &pVertexLayouts[inputs_index]);
+    if (FAILED(hr)) {
+      print("CreateInputLayout\n");
+      return hr;
+    }
+
+    return S_OK;
+  }
+
+  template <typename T>
+  T New(int elements)
+  {
+    return (T)malloc((sizeof (T)) * elements);
+  }
+
+  HRESULT scene_state::load_layouts(descriptor const& descriptor)
+  {
+    HRESULT hr;
+
+    //this->pVertexLayouts = new ID3D10InputLayout *[descriptor.inputs_list_count];
+    this->pVertexLayouts = New<ID3D10InputLayout **>(descriptor.inputs_list_count);
+
+    for (int i = 0; i < descriptor.inputs_list_count; i++) {
+      hr = load_layout(i, descriptor.inputs_list[i]);
+      if (FAILED(hr))
+        return hr;
+    }
+
+    return S_OK;
+  }
+
+  HRESULT LoadEffect()
+  {
+    HRESULT hr;
+    HRSRC hRes = FindResource(NULL, L"RES_COLLADA_SCENE_FXO", RT_RCDATA);
+    if (hRes == NULL) {
+      print("FindResource RES_COLLADA_SCENE_FXO\n");
+      return E_FAIL;
+    }
+    DWORD dwResSize = SizeofResource(NULL, hRes);
+    HGLOBAL hData = LoadResource(NULL, hRes);
+    void * pData = LockResource(hData);
+    hr = D3D10CreateEffectFromMemory(pData,
+                                     dwResSize,
+                                     0,
+                                     g_pd3dDevice,
+                                     NULL,
+                                     &g_pEffect
+                                     );
+    if (FAILED(hr)) {
+      print("D3D10CreateEffectFromMemory\n");
+      return hr;
+    }
+
+    g_pTechniqueBlinn = g_pEffect->GetTechniqueByName("Blinn");
+
+    g_pWorldVariable = g_pEffect->GetVariableByName("World")->AsMatrix();
+    g_pViewVariable = g_pEffect->GetVariableByName("View")->AsMatrix();
+    g_pProjectionVariable = g_pEffect->GetVariableByName("Projection")->AsMatrix();
+
+    return S_OK;
+  }
+
+  HRESULT LoadScene(descriptor const& descriptor, scene_state& state)
+  {
+    HRESULT hr;
+
+    // effects/techniques
+    hr = LoadEffect();
+    if (FAILED(hr))
+      return E_FAIL;
+
+    // layouts
+    hr = state.load_layouts(descriptor);
+    if (FAILED(hr))
+      return E_FAIL;
+
+    hr = state.load_vertex_buffer(L"RES_MODELS_CURVE_INTERPOLATION_VTX");
+    if (FAILED(hr))
+      return E_FAIL;
+
+    hr = state.load_index_buffer(L"RES_MODELS_CURVE_INTERPOLATION_IDX");
+    if (FAILED(hr))
+      return E_FAIL;
+
+    return S_OK;
+  }
+
+  static inline XMMATRIX transform_matrix(transform const& transform)
+  {
+    switch (transform.type) {
+    case transform_type::TRANSLATE:
+      return XMMatrixTranslationFromVector(XMLoadFloat3((XMFLOAT3 *)&transform.translate.x));
+    case transform_type::ROTATE:
+      return XMMatrixRotationNormal(XMLoadFloat3((XMFLOAT3 *)&transform.rotate.x),
+                                    XMConvertToRadians(transform.rotate.w));
+    case transform_type::SCALE:
+      return XMMatrixScalingFromVector(XMLoadFloat3((XMFLOAT3 *)&transform.scale.x));
+    default:
+      assert(false);
+      break;
+    }
+  }
+
+  void RenderGeometries(scene_state const& state,
+                        instance_geometry const * const instance_geometries,
+                        int const instance_geometries_count)
+  {
+    for (int i = 0; i < instance_geometries_count; i++) {
+      instance_geometry const &instance_geometry = instance_geometries[i];
+
+      mesh const& mesh = instance_geometry.geometry->mesh;
+
+      UINT strides[1] = { 3 * 3 * 4 };
+      UINT offsets[1] = { (UINT)mesh.vertex_buffer_offset };
+      g_pd3dDevice->IASetVertexBuffers(0, state.numBuffers, state.pVertexBuffers, strides, offsets);
+      g_pd3dDevice->IASetIndexBuffer(state.pIndexBuffer, DXGI_FORMAT_R32_UINT, mesh.index_buffer_offset);
+
+      D3D10_TECHNIQUE_DESC techDesc;
+      g_pTechniqueBlinn->GetDesc(&techDesc);
+
+      for (int j = 0; j < mesh.triangles_count; j++) {
+        triangles const& triangles = mesh.triangles[j];
+
+        g_pTechniqueBlinn->GetPassByIndex(0)->Apply(0);
+        g_pd3dDevice->IASetInputLayout(state.pVertexLayouts[triangles.inputs_index]);
+        g_pd3dDevice->DrawIndexed(triangles.count * 3, triangles.index_offset, 0);
+      }
+    }
+  }
+
+  void Render(descriptor const& descriptor, scene_state const& state)
+  {
+    g_pViewVariable->SetMatrix((float *)&g_View);
+    g_pProjectionVariable->SetMatrix((float *)&g_Projection);
+
+    g_pd3dDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+
+    for (int i = 0; i < descriptor.nodes_count; i++) {
+      node const& node = *descriptor.nodes[i];
+      if (node.type != node_type::NODE)
+        continue;
+
+      XMMATRIX World = XMMatrixIdentity();
+      // build the world transform
+      for (int j = 0; j < node.transforms_count; j++) {
+        transform const& transform = node.transforms[j];
+        World = transform_matrix(transform) * World;
+      }
+      g_pWorldVariable->SetMatrix((float *)&World);
+
+      RenderGeometries(state, node.instance_geometries, node.instance_geometries_count);
+    }
+  }
+}
diff --git a/src/effect/collada_scene.fx b/src/effect/collada_scene.fx
new file mode 100644
index 0000000..8c8cbe0
--- /dev/null
+++ b/src/effect/collada_scene.fx
@@ -0,0 +1,67 @@
+cbuffer cbEveryFrame
+{
+  matrix View;
+  matrix Projection;
+};
+
+cbuffer cbMultiplePerFrame
+{
+  matrix World;
+};
+
+struct VS_INPUT
+{
+  float3 Pos : POSITION;
+  float3 Norm : NORMAL;
+  float2 Tex : TEXCOORD0;
+};
+
+struct PS_INPUT
+{
+  float4 Pos : SV_POSITION;
+  float3 Norm : NORMAL;
+  float2 Tex : TEXCOORD0;
+};
+
+PS_INPUT VS(VS_INPUT input)
+{
+  PS_INPUT output;
+
+  output.Pos = mul(float4(input.Pos, 1), World);
+  output.Pos = mul(output.Pos, View);
+  output.Pos = mul(output.Pos, Projection);
+
+  output.Norm = mul(input.Norm, (float3x3)World);
+  output.Tex = input.Tex;
+
+  return output;
+}
+
+float4 PS(PS_INPUT input) : SV_Target
+{
+  //return float4(input.Normal * 0.5 + 0.5, 1);
+  return float4(input.Tex.xy, 0, 1);
+}
+
+BlendState DisableBlending
+{
+  BlendEnable[0] = FALSE;
+};
+
+DepthStencilState EnableDepth
+{
+  DepthEnable = TRUE;
+  DepthWriteMask = ALL;
+};
+
+technique10 Blinn
+{
+  pass P0
+  {
+    SetVertexShader(CompileShader(vs_4_0, VS()));
+    SetGeometryShader(NULL);
+    SetPixelShader(CompileShader(ps_4_0, PS()));
+    SetBlendState(DisableBlending, float4(0.0, 0.0, 0.0, 0.0), 0xffffffff);
+    SetDepthStencilState(EnableDepth, 0);
+  }
+}
diff --git a/src/main.cpp b/src/main.cpp
index f0f8d45..ad5a2da 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -18,6 +18,9 @@
 #include "cube.hpp"
 
 #include "collada.hpp"
+#include "collada_scene.hpp"
+
+#include "scenes/curve_interpolation.hpp"
 
 HINSTANCE g_hInstance = NULL;
 HWND g_hWnd = NULL;
@@ -129,6 +132,10 @@ XMFLOAT4 g_vLightColors[2] = {
 XMVECTOR g_Eye = XMVectorSet(0.0f, -30.0f, 15.0f, 1.0f);
 XMVECTOR g_At = XMVectorSet(0.0f, 0.0f, 15.0f, 1.0f);
 
+// collada scene state
+
+collada_scene::scene_state g_SceneState;
+
 // forward declarations
 
 HRESULT InitWindow(HINSTANCE hInstance, int nCmdShow);
@@ -197,6 +204,11 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLi
     return 0;
   }
 
+  if (FAILED(collada_scene::LoadScene(curve_interpolation::descriptor, g_SceneState))) {
+    print("collada::LoadScene\n");
+    return 0;
+  }
+
   InitializeNodeInstances();
 
   if (FAILED(InitInput(hInstance))) {
@@ -1827,7 +1839,9 @@ void Render(float t, float dt)
 
   RenderFont(dt);
 
-  collada::Render(t);
+  //collada::Render(t);
+
+  collada_scene::Render(curve_interpolation::descriptor, g_SceneState);
 
   // present
   g_pSwapChain->Present(0, 0);