diff --git a/example/castle.cpp b/example/castle.cpp
new file mode 100644
index 0000000..c64e4f3
--- /dev/null
+++ b/example/castle.cpp
@@ -0,0 +1,522 @@
+#include <stdint.h>
+
+#include "holly/background.hpp"
+#include "holly/core.hpp"
+#include "holly/core_bits.hpp"
+#include "holly/holly.hpp"
+#include "holly/isp_tsp.hpp"
+#include "holly/region_array.hpp"
+#include "holly/ta_bits.hpp"
+#include "holly/ta_fifo_polygon_converter.hpp"
+#include "holly/ta_global_parameter.hpp"
+#include "holly/ta_parameter.hpp"
+#include "holly/ta_vertex_parameter.hpp"
+#include "holly/texture_memory_alloc3.hpp"
+#include "holly/video_output.hpp"
+
+#include "sh7091/sh7091.hpp"
+#include "sh7091/sh7091_bits.hpp"
+#include "sh7091/serial.hpp"
+#include "sh7091/vbr.hpp"
+
+#include "systembus.hpp"
+#include "systembus_bits.hpp"
+
+#include "memorymap.hpp"
+
+#include "math/vec2.hpp"
+#include "math/vec3.hpp"
+#include "math/vec4.hpp"
+#include "math/mat4x4.hpp"
+
+using vec2 = vec<2, float>;
+using vec3 = vec<3, float>;
+using vec4 = vec<4, float>;
+using mat4x4 = mat<4, 4, float>;
+
+#include "x/x.hpp"
+#include "model/castle/model.hpp"
+
+const float deg = 0.017453292519943295;
+
+void vbr100()
+{
+  serial::string("vbr100\n");
+  serial::string("expevt ");
+  serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
+  serial::string("intevt ");
+  serial::integer<uint16_t>(sh7091.CCN.INTEVT);
+  serial::string("tra ");
+  serial::integer<uint16_t>(sh7091.CCN.TRA);
+
+  uint32_t spc;
+  uint32_t ssr;
+  asm volatile ("stc spc,%0" : "=r" (spc));
+  asm volatile ("stc ssr,%0" : "=r" (ssr));
+  serial::string("spc ");
+  serial::integer(spc);
+  serial::string("ssr ");
+  serial::integer(ssr);
+
+  while (1);
+}
+
+void vbr400()
+{
+  serial::string("vbr400");
+  serial::string("expevt ");
+  serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
+  serial::string("intevt ");
+  serial::integer<uint16_t>(sh7091.CCN.INTEVT);
+  serial::string("tra ");
+  serial::integer<uint16_t>(sh7091.CCN.TRA);
+
+  uint32_t spc;
+  uint32_t ssr;
+  asm volatile ("stc spc,%0" : "=r" (spc));
+  asm volatile ("stc ssr,%0" : "=r" (ssr));
+  serial::string("spc ");
+  serial::integer(spc);
+  serial::string("ssr ");
+  serial::integer(ssr);
+
+  while (1);
+}
+
+static int render_done = 0;
+
+void vbr600()
+{
+  if (sh7091.CCN.EXPEVT == 0 && sh7091.CCN.INTEVT == 0x320) {
+    uint32_t istnrm = system.ISTNRM;
+    uint32_t isterr = system.ISTERR;
+
+    if (isterr) {
+      serial::string("isterr: ");
+      serial::integer<uint32_t>(system.ISTERR);
+    }
+
+    if (istnrm & istnrm::end_of_render_tsp) {
+      system.ISTNRM = istnrm::end_of_render_tsp
+                    | istnrm::end_of_render_isp
+                    | istnrm::end_of_render_video;
+      render_done = 1;
+      return;
+    }
+  }
+
+  serial::string("vbr600");
+  serial::string("expevt ");
+  serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
+  serial::string("intevt ");
+  serial::integer<uint16_t>(sh7091.CCN.INTEVT);
+  serial::string("tra ");
+  serial::integer<uint16_t>(sh7091.CCN.TRA);
+
+  serial::string("istnrm: ");
+  serial::integer<uint32_t>(system.ISTNRM);
+  serial::string("isterr: ");
+  serial::integer<uint32_t>(system.ISTERR);
+
+  uint32_t spc;
+  uint32_t ssr;
+  asm volatile ("stc spc,%0" : "=r" (spc));
+  asm volatile ("stc ssr,%0" : "=r" (ssr));
+  serial::string("spc ");
+  serial::integer(spc);
+  serial::string("ssr ");
+  serial::integer(ssr);
+
+  while (1);
+}
+
+void interrupt_init()
+{
+  system.IML2NRM = 0;
+  system.IML2ERR = 0;
+  system.IML2EXT = 0;
+
+  system.IML4NRM = 0;
+  system.IML4ERR = 0;
+  system.IML4EXT = 0;
+
+  system.IML6NRM = 0;
+  system.IML6ERR = 0;
+  system.IML6EXT = 0;
+
+  system.ISTERR = 0xffffffff;
+  system.ISTNRM = 0xffffffff;
+
+  sh7091.CCN.INTEVT = 0;
+  sh7091.CCN.EXPEVT = 0;
+
+  uint32_t vbr = reinterpret_cast<uint32_t>(&__vbr_link_start) - 0x100;
+  serial::string("vbr ");
+  serial::integer<uint32_t>(vbr);
+  serial::string("vbr100 ");
+  serial::integer<uint32_t>(reinterpret_cast<uint32_t>(&vbr100));
+
+  asm volatile ("ldc %0,vbr"
+		:
+		: "r" (vbr));
+
+  uint32_t sr;
+  asm volatile ("stc sr,%0"
+		: "=r" (sr));
+  serial::string("sr ");
+  serial::integer<uint32_t>(sr);
+
+  sr &= ~sh::sr::bl; // BL
+  sr &= ~sh::sr::imask(15); // imask
+
+  serial::string("sr ");
+  serial::integer<uint32_t>(sr);
+
+  asm volatile ("ldc %0,sr"
+		:
+		: "r" (sr));
+}
+
+void global_polygon_type_0(ta_parameter_writer& writer, uint32_t texture_address, uint32_t list, uint32_t cull)
+{
+  const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
+                                        | list
+                                        | obj_control::col_type::packed_color
+                                        ;
+
+  const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
+                                          | cull;
+
+  const uint32_t tsp_instruction_word = tsp_instruction_word::fog_control::no_fog
+                                      | tsp_instruction_word::src_alpha_instr::one
+                                      | tsp_instruction_word::dst_alpha_instr::zero
+                                      | tsp_instruction_word::texture_u_size::from_int(256)
+                                      | tsp_instruction_word::texture_v_size::from_int(256)
+                                      ;
+
+  const uint32_t texture_control_word = texture_control_word::pixel_format::_565
+                                      | texture_control_word::scan_order::twiddled
+                                      | texture_control_word::texture_address(texture_address / 8);
+
+  writer.append<ta_global_parameter::polygon_type_0>() =
+    ta_global_parameter::polygon_type_0(parameter_control_word,
+                                        isp_tsp_instruction_word,
+                                        tsp_instruction_word,
+                                        texture_control_word,
+                                        0, // data_size_for_sort_dma
+                                        0  // next_address_for_sort_dma
+                                        );
+}
+
+#define assert(b)                                                       \
+  do {                                                                  \
+    if (!(b)) {                                                         \
+      serial::string(__FILE__);                                         \
+      serial::character(':');                                           \
+      serial::integer<uint32_t>(__LINE__, ' ');                         \
+      serial::string(__func__);                                         \
+      serial::string(": assertion failed: ");                           \
+      serial::string(#b);                                               \
+      serial::character('\n');                                          \
+      while (1);                                                        \
+    }                                                                   \
+  } while (0);
+
+vec3 screen_transform(const mat4x4& screen, vec3 v)
+{
+  v = screen * v;
+
+  float dim = 480 / 2.0;
+
+  return {
+    v.x / v.z * dim + 640 / 2.0f,
+    v.y / v.z * dim + 480 / 2.0f,
+    1 / v.z,
+  };
+}
+
+static inline void render_tri(ta_parameter_writer& writer,
+                              uint32_t base_color,
+                              vec3 ap,
+                              vec3 bp,
+                              vec3 cp)
+{
+  if (ap.z < 0 || bp.z < 0 || cp.z < 0)
+    return;
+
+  writer.append<ta_vertex_parameter::polygon_type_0>() =
+    ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
+                                        ap.x, ap.y, ap.z,
+                                        base_color
+                                        ); // offset_color
+
+  writer.append<ta_vertex_parameter::polygon_type_0>() =
+    ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
+                                        bp.x, bp.y, bp.z,
+                                        base_color
+                                        ); // offset_color
+
+  writer.append<ta_vertex_parameter::polygon_type_0>() =
+    ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
+                                        cp.x, cp.y, cp.z,
+                                        base_color
+                                        ); // offset_color
+}
+
+constexpr inline mat4x4 screen_rotation(float theta)
+{
+  //float zt = -0.7853981633974483 + (0.2);
+  float zt = deg * 0;
+  float xt = -(sin(theta * 4) * 0.5 + 0.5);
+  //float xt = 0.7853981633974483 * 3.7;
+
+  mat4x4 rx = {
+    1, 0, 0, 0,
+    0, cos(xt), -sin(xt), 0,
+    0, sin(xt), cos(xt), 0,
+    0, 0, 0, 1,
+  };
+
+  mat4x4 rz = {
+    cos(zt), -sin(zt), 0, 0,
+    sin(zt), cos(zt), 0, 0,
+    0, 0, 1, 0,
+    0, 0, 0, 1,
+  };
+
+  mat4x4 t = {
+    1, 0, 0, 0,
+    0, -1, 0, 300,
+    0, 0, 1, 500,
+    0, 0, 0, 1,
+  };
+
+  return t * rx * rz;
+}
+
+uint32_t xorshift_state = 0x12345678;
+
+/* The state must be initialized to non-zero */
+uint32_t xorshift32()
+{
+  /* Algorithm "xor" from p. 4 of Marsaglia, "Xorshift RNGs" */
+  uint32_t x = xorshift_state;
+  x ^= x << 13;
+  x ^= x >> 17;
+  x ^= x << 5;
+  return xorshift_state = x;
+}
+
+const frame * frames[] = {
+  &frame_x3ds_Box08,
+  &frame_x3ds_Box09,
+  &frame_x3ds_Box02,
+  &frame_x3ds_Cone02,
+  &frame_x3ds_Cylinder02,
+  &frame_x3ds_Box21,
+  &frame_x3ds_Box22,
+  &frame_x3ds_Box23,
+  &frame_x3ds_Box24,
+  &frame_x3ds_Box25,
+  &frame_x3ds_Box26,
+  &frame_x3ds_Box27,
+  &frame_x3ds_Cylinder03,
+  &frame_x3ds_Cone03,
+  &frame_x3ds_Cylinder01,
+  &frame_x3ds_Box01,
+  &frame_x3ds_Box28,
+  &frame_x3ds_Box03,
+  &frame_x3ds_roof,
+  &frame_x3ds_walkway,
+};
+
+static inline void render_mesh(ta_parameter_writer& writer,
+                               const mat4x4& screen,
+                               const mat4x4& model,
+                               const mesh * mesh)
+{
+  //mesh->vertices;
+  for (int i = 0; i < mesh->n_faces; i++) {
+    const auto& indices = mesh->faces[i].face_vertex_indices;
+    uint32_t base_color = xorshift32();
+    render_tri(writer,
+               base_color,
+               screen_transform(screen, model * mesh->vertices[indices[0]]),
+               screen_transform(screen, model * mesh->vertices[indices[1]]),
+               screen_transform(screen, model * mesh->vertices[indices[2]]));
+  }
+}
+
+static inline void render_frame(ta_parameter_writer& writer,
+                                const mat4x4& screen,
+                                const frame * frame)
+{
+  xorshift_state = 0x12345678;
+
+  const mat4x4 identity{};
+
+  const mat4x4 * transform_matrix = &identity;
+
+  int ix = 0;
+  while (true) {
+    const data_object * obj = frame->objects[ix];
+    if (obj == nullptr)
+      break;
+
+    switch (obj->tag) {
+    case tag::frame_transform_matrix:
+      transform_matrix = &obj->frame_transform_matrix.frame_matrix;
+      break;
+    case tag::mesh:
+      render_mesh(writer, screen, *transform_matrix, &obj->mesh);
+      break;
+    default:
+      break;
+    }
+
+    ix += 1;
+  }
+}
+
+void render_castle(ta_parameter_writer& writer, const mat4x4& screen)
+{
+  for (uint32_t i = 0; i < (sizeof (frames)) / (sizeof (frames[0])); i++) {
+    render_frame(writer, screen, frames[i]);
+  }
+}
+
+static float theta = deg * 360;
+void transfer_scene(ta_parameter_writer& writer)
+{
+  const mat4x4 screen = screen_rotation(theta);
+
+  global_polygon_type_0(writer, texture_memory_alloc.texture.start,
+                        para_control::list_type::opaque,
+                        isp_tsp_instruction_word::culling_mode::no_culling);
+
+  render_castle(writer, screen);
+
+  // end of opaque list
+  writer.append<ta_global_parameter::end_of_list>() =
+    ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
+
+  theta += deg * 0.1;
+}
+
+void transfer_ta_fifo_texture_memory_32byte(void * dst, void * src, int length)
+{
+  uint32_t out_addr = (uint32_t)dst;
+  sh7091.CCN.QACR0 = ((reinterpret_cast<uint32_t>(out_addr) >> 24) & 0b11100);
+  sh7091.CCN.QACR1 = ((reinterpret_cast<uint32_t>(out_addr) >> 24) & 0b11100);
+
+  volatile uint32_t * base = &store_queue[(out_addr & 0x03ffffc0) / 4];
+  uint32_t * src32 = reinterpret_cast<uint32_t *>(src);
+
+  length = (length + 31) & ~31; // round up to nearest multiple of 32
+  while (length > 0) {
+    base[0] = src32[0];
+    base[1] = src32[1];
+    base[2] = src32[2];
+    base[3] = src32[3];
+    base[4] = src32[4];
+    base[5] = src32[5];
+    base[6] = src32[6];
+    base[7] = src32[7];
+    asm volatile ("pref @%0"
+                  :                // output
+                  : "r" (&base[0]) // input
+                  : "memory");
+    length -= 32;
+    base += 8;
+    src32 += 8;
+  }
+}
+
+uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
+
+void main()
+{
+  serial::init(0);
+
+  interrupt_init();
+
+  constexpr uint32_t ta_alloc = 0
+                              | ta_alloc_ctrl::pt_opb::no_list
+			      | ta_alloc_ctrl::tm_opb::no_list
+                              | ta_alloc_ctrl::t_opb::no_list
+                              | ta_alloc_ctrl::om_opb::no_list
+                              | ta_alloc_ctrl::o_opb::_16x4byte;
+
+  constexpr int render_passes = 1;
+  constexpr struct opb_size opb_size[render_passes] = {
+    {
+      .opaque = 16 * 4,
+      .opaque_modifier = 0,
+      .translucent = 0,
+      .translucent_modifier = 0,
+      .punch_through = 0
+    }
+  };
+
+  holly.SOFTRESET = softreset::pipeline_soft_reset
+		  | softreset::ta_soft_reset;
+  holly.SOFTRESET = 0;
+
+  core_init();
+
+  system.IML6NRM = istnrm::end_of_render_tsp;
+
+  const int framebuffer_width = 640;
+  const int framebuffer_height = 480;
+  const int tile_width = framebuffer_width / 32;
+  const int tile_height = framebuffer_height / 32;
+
+  for (int i = 0; i < 2; i++) {
+    region_array_multipass(tile_width,
+                           tile_height,
+                           opb_size,
+                           render_passes,
+                           texture_memory_alloc.region_array[i].start,
+                           texture_memory_alloc.object_list[i].start);
+
+    background_parameter2(texture_memory_alloc.background[i].start,
+                          0xff202040);
+  }
+
+  int ta = 0;
+  int core = 0;
+
+  ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf);
+
+  video_output::set_mode_vga();
+  while (1) {
+    ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters[ta].start,
+			       texture_memory_alloc.isp_tsp_parameters[ta].end,
+			       texture_memory_alloc.object_list[ta].start,
+			       texture_memory_alloc.object_list[ta].end,
+			       opb_size[0].total(),
+			       ta_alloc,
+			       tile_width,
+			       tile_height);
+    writer.offset = 0;
+    transfer_scene(writer);
+    ta_polygon_converter_writeback(writer.buf, writer.offset);
+    ta_polygon_converter_transfer(writer.buf, writer.offset);
+    ta_wait_opaque_list();
+
+    render_done = 0;
+    core_start_render2(texture_memory_alloc.region_array[core].start,
+                       texture_memory_alloc.isp_tsp_parameters[core].start,
+                       texture_memory_alloc.background[core].start,
+                       texture_memory_alloc.framebuffer[core].start,
+                       framebuffer_width);
+    //serial::string("wait render_done");
+    while (render_done == 0) {
+      asm volatile ("nop");
+    };
+
+    while (!spg_status::vsync(holly.SPG_STATUS));
+    holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[ta].start;
+    while (spg_status::vsync(holly.SPG_STATUS));
+  }
+}
diff --git a/example/example.mk b/example/example.mk
index c878a08..8fb3775 100644
--- a/example/example.mk
+++ b/example/example.mk
@@ -889,3 +889,16 @@ DRAGON_OBJ = \
 
 example/dragon.elf: LDSCRIPT = $(LIB)/main.lds
 example/dragon.elf: $(START_OBJ) $(DRAGON_OBJ)
+
+CASTLE_OBJ = \
+	example/castle.o \
+	holly/core.o \
+	holly/region_array.o \
+	holly/background.o \
+	holly/ta_fifo_polygon_converter.o \
+	holly/video_output.o \
+	sh7091/serial.o \
+	$(LIBGCC)
+
+example/castle.elf: LDSCRIPT = $(LIB)/main.lds
+example/castle.elf: $(START_OBJ) $(CASTLE_OBJ)
diff --git a/model/castle/model.hpp b/model/castle/model.hpp
index fac6630..aacc92a 100644
--- a/model/castle/model.hpp
+++ b/model/castle/model.hpp
@@ -9783,6 +9783,7 @@ const material material_x3ds_mat_castlestone = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&texture_filename_0),
+    nullptr,
   }
 };
 
@@ -9800,6 +9801,7 @@ const material material_x3ds_mat_Material__3 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&texture_filename_1),
+    nullptr,
   }
 };
 
@@ -9817,6 +9819,7 @@ const material material_x3ds_mat_shingle = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&texture_filename_2),
+    nullptr,
   }
 };
 
@@ -9834,6 +9837,7 @@ const material material_x3ds_mat_Material__8 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&texture_filename_3),
+    nullptr,
   }
 };
 
@@ -9848,6 +9852,7 @@ const frame frame_x3ds_Box08 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_0),
     reinterpret_cast<const data_object *>(&mesh_Box08),
+    nullptr,
   }
 };
 
@@ -9872,6 +9877,7 @@ const mesh mesh_Box08 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_0),
     reinterpret_cast<const data_object *>(&mesh_normals_0),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_0),
+    nullptr,
   }
 };
 
@@ -9883,6 +9889,7 @@ const mesh_material_list mesh_material_list_0 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -10006,6 +10013,7 @@ const frame frame_x3ds_Box09 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_1),
     reinterpret_cast<const data_object *>(&mesh_Box09),
+    nullptr,
   }
 };
 
@@ -10030,6 +10038,7 @@ const mesh mesh_Box09 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_1),
     reinterpret_cast<const data_object *>(&mesh_normals_1),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_1),
+    nullptr,
   }
 };
 
@@ -10041,6 +10050,7 @@ const mesh_material_list mesh_material_list_1 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -10392,6 +10402,7 @@ const frame frame_x3ds_Box02 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_2),
     reinterpret_cast<const data_object *>(&mesh_Box02),
+    nullptr,
   }
 };
 
@@ -10416,6 +10427,7 @@ const mesh mesh_Box02 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_2),
     reinterpret_cast<const data_object *>(&mesh_normals_2),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_2),
+    nullptr,
   }
 };
 
@@ -10427,6 +10439,7 @@ const mesh_material_list mesh_material_list_2 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__3),
+    nullptr,
   }
 };
 
@@ -10466,6 +10479,7 @@ const frame frame_x3ds_Cone02 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_3),
     reinterpret_cast<const data_object *>(&mesh_Cone02),
+    nullptr,
   }
 };
 
@@ -10490,6 +10504,7 @@ const mesh mesh_Cone02 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_3),
     reinterpret_cast<const data_object *>(&mesh_normals_3),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_3),
+    nullptr,
   }
 };
 
@@ -10501,6 +10516,7 @@ const mesh_material_list mesh_material_list_3 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_shingle),
+    nullptr,
   }
 };
 
@@ -10566,6 +10582,7 @@ const frame frame_x3ds_Cylinder02 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_4),
     reinterpret_cast<const data_object *>(&mesh_Cylinder02),
+    nullptr,
   }
 };
 
@@ -10590,6 +10607,7 @@ const mesh mesh_Cylinder02 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_4),
     reinterpret_cast<const data_object *>(&mesh_normals_4),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_4),
+    nullptr,
   }
 };
 
@@ -10601,6 +10619,7 @@ const mesh_material_list mesh_material_list_4 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__3),
+    nullptr,
   }
 };
 
@@ -10643,6 +10662,7 @@ const frame frame_x3ds_Box21 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_5),
     reinterpret_cast<const data_object *>(&mesh_Box21),
+    nullptr,
   }
 };
 
@@ -10667,6 +10687,7 @@ const mesh mesh_Box21 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_5),
     reinterpret_cast<const data_object *>(&mesh_normals_5),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_5),
+    nullptr,
   }
 };
 
@@ -10678,6 +10699,7 @@ const mesh_material_list mesh_material_list_5 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -11079,6 +11101,7 @@ const frame frame_x3ds_Box22 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_6),
     reinterpret_cast<const data_object *>(&mesh_Box22),
+    nullptr,
   }
 };
 
@@ -11103,6 +11126,7 @@ const mesh mesh_Box22 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_6),
     reinterpret_cast<const data_object *>(&mesh_normals_6),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_6),
+    nullptr,
   }
 };
 
@@ -11114,6 +11138,7 @@ const mesh_material_list mesh_material_list_6 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -11465,6 +11490,7 @@ const frame frame_x3ds_Box23 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_7),
     reinterpret_cast<const data_object *>(&mesh_Box23),
+    nullptr,
   }
 };
 
@@ -11489,6 +11515,7 @@ const mesh mesh_Box23 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_7),
     reinterpret_cast<const data_object *>(&mesh_normals_7),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_7),
+    nullptr,
   }
 };
 
@@ -11500,6 +11527,7 @@ const mesh_material_list mesh_material_list_7 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -11901,6 +11929,7 @@ const frame frame_x3ds_Box24 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_8),
     reinterpret_cast<const data_object *>(&mesh_Box24),
+    nullptr,
   }
 };
 
@@ -11925,6 +11954,7 @@ const mesh mesh_Box24 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_8),
     reinterpret_cast<const data_object *>(&mesh_normals_8),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_8),
+    nullptr,
   }
 };
 
@@ -11936,6 +11966,7 @@ const mesh_material_list mesh_material_list_8 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -12059,6 +12090,7 @@ const frame frame_x3ds_Box25 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_9),
     reinterpret_cast<const data_object *>(&mesh_Box25),
+    nullptr,
   }
 };
 
@@ -12083,6 +12115,7 @@ const mesh mesh_Box25 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_9),
     reinterpret_cast<const data_object *>(&mesh_normals_9),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_9),
+    nullptr,
   }
 };
 
@@ -12094,6 +12127,7 @@ const mesh_material_list mesh_material_list_9 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -12445,6 +12479,7 @@ const frame frame_x3ds_Box26 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_10),
     reinterpret_cast<const data_object *>(&mesh_Box26),
+    nullptr,
   }
 };
 
@@ -12469,6 +12504,7 @@ const mesh mesh_Box26 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_10),
     reinterpret_cast<const data_object *>(&mesh_normals_10),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_10),
+    nullptr,
   }
 };
 
@@ -12480,6 +12516,7 @@ const mesh_material_list mesh_material_list_10 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -12881,6 +12918,7 @@ const frame frame_x3ds_Box27 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_11),
     reinterpret_cast<const data_object *>(&mesh_Box27),
+    nullptr,
   }
 };
 
@@ -12905,6 +12943,7 @@ const mesh mesh_Box27 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_11),
     reinterpret_cast<const data_object *>(&mesh_normals_11),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_11),
+    nullptr,
   }
 };
 
@@ -12916,6 +12955,7 @@ const mesh_material_list mesh_material_list_11 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -13267,6 +13307,7 @@ const frame frame_x3ds_Cylinder03 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_12),
     reinterpret_cast<const data_object *>(&mesh_Cylinder03),
+    nullptr,
   }
 };
 
@@ -13291,6 +13332,7 @@ const mesh mesh_Cylinder03 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_12),
     reinterpret_cast<const data_object *>(&mesh_normals_12),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_12),
+    nullptr,
   }
 };
 
@@ -13302,6 +13344,7 @@ const mesh_material_list mesh_material_list_12 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__3),
+    nullptr,
   }
 };
 
@@ -13344,6 +13387,7 @@ const frame frame_x3ds_Cone03 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_13),
     reinterpret_cast<const data_object *>(&mesh_Cone03),
+    nullptr,
   }
 };
 
@@ -13368,6 +13412,7 @@ const mesh mesh_Cone03 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_13),
     reinterpret_cast<const data_object *>(&mesh_normals_13),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_13),
+    nullptr,
   }
 };
 
@@ -13379,6 +13424,7 @@ const mesh_material_list mesh_material_list_13 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_shingle),
+    nullptr,
   }
 };
 
@@ -13444,6 +13490,7 @@ const frame frame_x3ds_Cylinder01 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_14),
     reinterpret_cast<const data_object *>(&mesh_Cylinder01),
+    nullptr,
   }
 };
 
@@ -13468,6 +13515,7 @@ const mesh mesh_Cylinder01 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_14),
     reinterpret_cast<const data_object *>(&mesh_normals_14),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_14),
+    nullptr,
   }
 };
 
@@ -13479,6 +13527,7 @@ const mesh_material_list mesh_material_list_14 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_castlestone),
+    nullptr,
   }
 };
 
@@ -13907,6 +13956,7 @@ const frame frame_x3ds_Box01 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_15),
     reinterpret_cast<const data_object *>(&mesh_Box01),
+    nullptr,
   }
 };
 
@@ -13931,6 +13981,7 @@ const mesh mesh_Box01 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_15),
     reinterpret_cast<const data_object *>(&mesh_normals_15),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_15),
+    nullptr,
   }
 };
 
@@ -13942,6 +13993,7 @@ const mesh_material_list mesh_material_list_15 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__8),
+    nullptr,
   }
 };
 
@@ -13982,6 +14034,7 @@ const frame frame_x3ds_Box28 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_16),
     reinterpret_cast<const data_object *>(&mesh_Box28),
+    nullptr,
   }
 };
 
@@ -14006,6 +14059,7 @@ const mesh mesh_Box28 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_16),
     reinterpret_cast<const data_object *>(&mesh_normals_16),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_16),
+    nullptr,
   }
 };
 
@@ -14017,6 +14071,7 @@ const mesh_material_list mesh_material_list_16 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__8),
+    nullptr,
   }
 };
 
@@ -14057,6 +14112,7 @@ const frame frame_x3ds_Box03 = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_17),
     reinterpret_cast<const data_object *>(&mesh_Box03),
+    nullptr,
   }
 };
 
@@ -14081,6 +14137,7 @@ const mesh mesh_Box03 = {
     reinterpret_cast<const data_object *>(&mesh_material_list_17),
     reinterpret_cast<const data_object *>(&mesh_normals_17),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_17),
+    nullptr,
   }
 };
 
@@ -14092,6 +14149,7 @@ const mesh_material_list mesh_material_list_17 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__8),
+    nullptr,
   }
 };
 
@@ -14123,6 +14181,7 @@ const frame frame_x3ds_roof = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_18),
     reinterpret_cast<const data_object *>(&mesh_roof),
+    nullptr,
   }
 };
 
@@ -14147,6 +14206,7 @@ const mesh mesh_roof = {
     reinterpret_cast<const data_object *>(&mesh_material_list_18),
     reinterpret_cast<const data_object *>(&mesh_normals_18),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_18),
+    nullptr,
   }
 };
 
@@ -14158,6 +14218,7 @@ const mesh_material_list mesh_material_list_18 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_shingle),
+    nullptr,
   }
 };
 
@@ -14187,6 +14248,7 @@ const frame frame_x3ds_walkway = {
   .objects = {
     reinterpret_cast<const data_object *>(&frame_transform_matrix_19),
     reinterpret_cast<const data_object *>(&mesh_walkway),
+    nullptr,
   }
 };
 
@@ -14211,6 +14273,7 @@ const mesh mesh_walkway = {
     reinterpret_cast<const data_object *>(&mesh_material_list_19),
     reinterpret_cast<const data_object *>(&mesh_normals_19),
     reinterpret_cast<const data_object *>(&mesh_texture_coords_19),
+    nullptr,
   }
 };
 
@@ -14222,6 +14285,7 @@ const mesh_material_list mesh_material_list_19 = {
 
   .objects = {
     reinterpret_cast<const data_object *>(&material_x3ds_mat_Material__8),
+    nullptr,
   }
 };
 
@@ -14321,6 +14385,7 @@ const animation_set animation_set_x3ds_animset_0 = {
     reinterpret_cast<const data_object *>(&animation_x3ds_anim_17),
     reinterpret_cast<const data_object *>(&animation_x3ds_anim_18),
     reinterpret_cast<const data_object *>(&animation_x3ds_anim_19),
+    nullptr,
   }
 };
 
@@ -14331,6 +14396,7 @@ const animation animation_x3ds_anim_0 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box08),
     reinterpret_cast<const data_object *>(&animation_key_0),
     reinterpret_cast<const data_object *>(&animation_key_1),
+    nullptr,
   }
 };
 
@@ -14359,6 +14425,7 @@ const animation animation_x3ds_anim_1 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box09),
     reinterpret_cast<const data_object *>(&animation_key_2),
     reinterpret_cast<const data_object *>(&animation_key_3),
+    nullptr,
   }
 };
 
@@ -14387,6 +14454,7 @@ const animation animation_x3ds_anim_2 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box02),
     reinterpret_cast<const data_object *>(&animation_key_4),
     reinterpret_cast<const data_object *>(&animation_key_5),
+    nullptr,
   }
 };
 
@@ -14415,6 +14483,7 @@ const animation animation_x3ds_anim_3 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Cone02),
     reinterpret_cast<const data_object *>(&animation_key_6),
     reinterpret_cast<const data_object *>(&animation_key_7),
+    nullptr,
   }
 };
 
@@ -14443,6 +14512,7 @@ const animation animation_x3ds_anim_4 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Cylinder02),
     reinterpret_cast<const data_object *>(&animation_key_8),
     reinterpret_cast<const data_object *>(&animation_key_9),
+    nullptr,
   }
 };
 
@@ -14471,6 +14541,7 @@ const animation animation_x3ds_anim_5 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box21),
     reinterpret_cast<const data_object *>(&animation_key_10),
     reinterpret_cast<const data_object *>(&animation_key_11),
+    nullptr,
   }
 };
 
@@ -14499,6 +14570,7 @@ const animation animation_x3ds_anim_6 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box22),
     reinterpret_cast<const data_object *>(&animation_key_12),
     reinterpret_cast<const data_object *>(&animation_key_13),
+    nullptr,
   }
 };
 
@@ -14527,6 +14599,7 @@ const animation animation_x3ds_anim_7 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box23),
     reinterpret_cast<const data_object *>(&animation_key_14),
     reinterpret_cast<const data_object *>(&animation_key_15),
+    nullptr,
   }
 };
 
@@ -14555,6 +14628,7 @@ const animation animation_x3ds_anim_8 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box24),
     reinterpret_cast<const data_object *>(&animation_key_16),
     reinterpret_cast<const data_object *>(&animation_key_17),
+    nullptr,
   }
 };
 
@@ -14583,6 +14657,7 @@ const animation animation_x3ds_anim_9 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box25),
     reinterpret_cast<const data_object *>(&animation_key_18),
     reinterpret_cast<const data_object *>(&animation_key_19),
+    nullptr,
   }
 };
 
@@ -14611,6 +14686,7 @@ const animation animation_x3ds_anim_10 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box26),
     reinterpret_cast<const data_object *>(&animation_key_20),
     reinterpret_cast<const data_object *>(&animation_key_21),
+    nullptr,
   }
 };
 
@@ -14639,6 +14715,7 @@ const animation animation_x3ds_anim_11 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box27),
     reinterpret_cast<const data_object *>(&animation_key_22),
     reinterpret_cast<const data_object *>(&animation_key_23),
+    nullptr,
   }
 };
 
@@ -14667,6 +14744,7 @@ const animation animation_x3ds_anim_12 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Cylinder03),
     reinterpret_cast<const data_object *>(&animation_key_24),
     reinterpret_cast<const data_object *>(&animation_key_25),
+    nullptr,
   }
 };
 
@@ -14695,6 +14773,7 @@ const animation animation_x3ds_anim_13 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Cone03),
     reinterpret_cast<const data_object *>(&animation_key_26),
     reinterpret_cast<const data_object *>(&animation_key_27),
+    nullptr,
   }
 };
 
@@ -14723,6 +14802,7 @@ const animation animation_x3ds_anim_14 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Cylinder01),
     reinterpret_cast<const data_object *>(&animation_key_28),
     reinterpret_cast<const data_object *>(&animation_key_29),
+    nullptr,
   }
 };
 
@@ -14751,6 +14831,7 @@ const animation animation_x3ds_anim_15 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box01),
     reinterpret_cast<const data_object *>(&animation_key_30),
     reinterpret_cast<const data_object *>(&animation_key_31),
+    nullptr,
   }
 };
 
@@ -14779,6 +14860,7 @@ const animation animation_x3ds_anim_16 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box28),
     reinterpret_cast<const data_object *>(&animation_key_32),
     reinterpret_cast<const data_object *>(&animation_key_33),
+    nullptr,
   }
 };
 
@@ -14807,6 +14889,7 @@ const animation animation_x3ds_anim_17 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_Box03),
     reinterpret_cast<const data_object *>(&animation_key_34),
     reinterpret_cast<const data_object *>(&animation_key_35),
+    nullptr,
   }
 };
 
@@ -14835,6 +14918,7 @@ const animation animation_x3ds_anim_18 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_roof),
     reinterpret_cast<const data_object *>(&animation_key_36),
     reinterpret_cast<const data_object *>(&animation_key_37),
+    nullptr,
   }
 };
 
@@ -14863,6 +14947,7 @@ const animation animation_x3ds_anim_19 = {
     reinterpret_cast<const data_object *>(&frame_x3ds_walkway),
     reinterpret_cast<const data_object *>(&animation_key_38),
     reinterpret_cast<const data_object *>(&animation_key_39),
+    nullptr,
   }
 };
 
diff --git a/x/gen.py b/x/gen.py
index c0ade31..c644cc6 100644
--- a/x/gen.py
+++ b/x/gen.py
@@ -303,6 +303,8 @@ def generate_definition(obj):
                 reference_name = obj_value(o).name
                 o = obj_map[reference_name]
             yield f"reinterpret_cast<const data_object *>(&{get_obj_name(o)}),"
+        # end of objects list
+        yield f"nullptr,"
         yield "}"
 
     yield "};"