diff --git a/example/bump.cpp b/example/bump.cpp
new file mode 100644
index 0000000..a69a3c3
--- /dev/null
+++ b/example/bump.cpp
@@ -0,0 +1,633 @@
+#include <bit>
+
+#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_alloc5.hpp"
+#include "holly/video_output.hpp"
+
+#include "systembus.hpp"
+#include "systembus_bits.hpp"
+
+#include "maple/maple.hpp"
+#include "maple/maple_host_command_writer.hpp"
+#include "maple/maple_bus_bits.hpp"
+#include "maple/maple_bus_commands.hpp"
+#include "maple/maple_bus_ft0.hpp"
+
+#include "memorymap.hpp"
+
+#include "sh7091/sh7091.hpp"
+#include "sh7091/sh7091_bits.hpp"
+#include "sh7091/serial.hpp"
+#include "printf/printf.h"
+
+#include "math/vec2.hpp"
+#include "math/vec3.hpp"
+#include "math/vec4.hpp"
+#include "math/mat2x2.hpp"
+#include "math/mat3x3.hpp"
+#include "math/mat4x4.hpp"
+#include "math/geometry.hpp"
+
+#include "interrupt.hpp"
+
+#include "font/font_bitmap.hpp"
+#include "font/verite_8x16/verite_8x16.data.h"
+#include "palette.hpp"
+#include "printf/unparse.h"
+
+#include "texture/bump/bump.data.h"
+
+#include "assert.h"
+
+constexpr int font_base = 64 + (((0x7f - 0x20) + 1) * 8 * 16 / 2);
+
+using vec2 = vec<2, float>;
+using vec3 = vec<3, float>;
+using vec4 = vec<4, float>;
+using mat4x4 = mat<4, 4, float>;
+
+static ft0::data_transfer::data_format data[4];
+
+static int k1 = 0;
+static int k2 = 0;
+static int k3 = 0;
+static int q = 0;
+static int pcw_offset = 0;
+
+uint8_t send_buf[1024] __attribute__((aligned(32)));
+uint8_t recv_buf[1024] __attribute__((aligned(32)));
+
+void do_get_condition()
+{
+  auto writer = maple::host_command_writer(send_buf, recv_buf);
+
+  using command_type = maple::get_condition;
+  using response_type = maple::data_transfer<ft0::data_transfer::data_format>;
+
+  auto [host_command, host_response]
+    = writer.append_command_all_ports<command_type, response_type>();
+
+  for (int port = 0; port < 4; port++) {
+    auto& data_fields = host_command[port].bus_data.data_fields;
+    data_fields.function_type = std::byteswap(function_type::controller);
+  }
+  maple::dma_start(send_buf, writer.send_offset,
+                   recv_buf, writer.recv_offset);
+
+  for (uint8_t port = 0; port < 4; port++) {
+    auto& bus_data = host_response[port].bus_data;
+    if (bus_data.command_code != response_type::command_code) {
+      return;
+    }
+    auto& data_fields = bus_data.data_fields;
+    if ((std::byteswap(data_fields.function_type) & function_type::controller) == 0) {
+      return;
+    }
+
+    data[port].digital_button = data_fields.data.digital_button;
+    for (int i = 0; i < 6; i++) {
+      data[port].analog_coordinate_axis[i]
+        = data_fields.data.analog_coordinate_axis[i];
+    }
+  }
+}
+
+void vbr100()
+{
+  serial::string("vbr100\n");
+  interrupt_exception();
+}
+
+void vbr400()
+{
+  serial::string("vbr400\n");
+  interrupt_exception();
+}
+
+const int framebuffer_width = 640;
+const int framebuffer_height = 480;
+const int tile_width = framebuffer_width / 32;
+const int tile_height = framebuffer_height / 32;
+
+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::_32x4byte
+                            | ta_alloc_ctrl::om_opb::no_list
+  | ta_alloc_ctrl::o_opb::_32x4byte
+  ;
+
+constexpr int ta_cont_count = 1;
+constexpr struct opb_size opb_size[ta_cont_count] = {
+  {
+    .opaque = 32 * 4,
+    .opaque_modifier = 0,
+    .translucent = 32 * 4,
+    .translucent_modifier = 0,
+    .punch_through = 0
+  }
+};
+
+static volatile int ta_in_use = 0;
+static volatile int core_in_use = 0;
+static volatile int next_frame = 0;
+static volatile int framebuffer_ix = 0;
+static volatile int next_frame_ix = 0;
+
+static inline void pump_events(uint32_t istnrm)
+{
+  if (istnrm & istnrm::v_blank_in) {
+    system.ISTNRM = istnrm::v_blank_in;
+
+    next_frame = 1;
+    holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[next_frame_ix].start;
+  }
+
+  if (istnrm & istnrm::end_of_render_tsp) {
+    system.ISTNRM = istnrm::end_of_render_tsp
+                  | istnrm::end_of_render_isp
+                  | istnrm::end_of_render_video;
+
+    next_frame_ix = framebuffer_ix;
+    framebuffer_ix += 1;
+    if (framebuffer_ix >= 3) framebuffer_ix = 0;
+
+    core_in_use = 0;
+  }
+
+  if (istnrm & istnrm::end_of_transferring_translucent_list) {
+    system.ISTNRM = istnrm::end_of_transferring_translucent_list;
+
+    core_in_use = 1;
+    core_start_render2(texture_memory_alloc.region_array.start,
+                       texture_memory_alloc.isp_tsp_parameters.start,
+                       texture_memory_alloc.background[0].start,
+                       texture_memory_alloc.framebuffer[framebuffer_ix].start,
+                       framebuffer_width);
+
+    ta_in_use = 0;
+  }
+}
+
+void vbr600()
+{
+  uint32_t sr;
+  asm volatile ("stc sr,%0" : "=r" (sr));
+  sr |= sh::sr::imask(15);
+  asm volatile ("ldc %0,sr" : : "r" (sr));
+  //serial::string("imask\n");
+
+  //check_pipeline();
+
+  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);
+    }
+
+    pump_events(istnrm);
+
+    sr &= ~sh::sr::imask(15);
+    asm volatile ("ldc %0,sr" : : "r" (sr));
+
+    return;
+  }
+
+  serial::string("vbr600\n");
+  interrupt_exception();
+}
+
+const vec3 position[] = {
+  { -0.5f,  -0.5f,  0.1f},
+  { -0.5f,   0.5f,  0.1f},
+  {  0.5f,   0.5f,  0.1f},
+  {  0.5f,  -0.5f,  0.1f},
+};
+
+const vec2 texture[] = {
+  {0.f, 0.f},
+  {0.f, 1.f},
+  {1.f, 1.f},
+  {1.f, 0.f},
+};
+
+void global_polygon_type_0(ta_parameter_writer& writer,
+                           uint32_t para_control_obj_control,
+                           uint32_t tsp_instruction,
+                           uint32_t texture_control_word,
+                           const float a = 1.0f,
+                           const float r = 1.0f,
+                           const float g = 1.0f,
+                           const float b = 1.0f
+                           )
+{
+  const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
+                                        | obj_control::col_type::packed_color
+                                        | para_control_obj_control
+                                        ;
+
+  const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
+                                          | isp_tsp_instruction_word::culling_mode::no_culling
+                                          ;
+
+  const uint32_t tsp_instruction_word = tsp_instruction_word::fog_control::no_fog
+                                      | tsp_instruction_word::texture_shading_instruction::decal
+                                      | tsp_instruction
+                                      ;
+
+  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,
+                                        0
+                                        );
+}
+
+static inline void render_quad(ta_parameter_writer& writer,
+                               vec3 ap,
+                               vec3 bp,
+                               vec3 cp,
+                               vec3 dp,
+                               vec2 at,
+                               vec2 bt,
+                               vec2 ct,
+                               vec2 dt,
+                               uint32_t base_color,
+                               uint32_t offset_color)
+{
+  if (ap.z < 0 || bp.z < 0 || cp.z < 0 || dp.z < 0)
+    return;
+
+  writer.append<ta_vertex_parameter::polygon_type_3>() =
+    ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
+                                        ap.x, ap.y, ap.z,
+                                        at.x, at.y,
+                                        base_color,
+                                        offset_color);
+
+  writer.append<ta_vertex_parameter::polygon_type_3>() =
+    ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
+                                        bp.x, bp.y, bp.z,
+                                        bt.x, bt.y,
+                                        base_color,
+                                        offset_color);
+
+  writer.append<ta_vertex_parameter::polygon_type_3>() =
+    ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
+                                        dp.x, dp.y, dp.z,
+                                        dt.x, dt.y,
+                                        base_color,
+                                        offset_color);
+
+  writer.append<ta_vertex_parameter::polygon_type_3>() =
+    ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(true),
+                                        cp.x, cp.y, cp.z,
+                                        ct.x, ct.y,
+                                        base_color,
+                                        offset_color);
+}
+
+vec3 transform(vec3 v)
+{
+  return {
+    v.x * 300 + 320,
+    v.y * 300 + 240,
+    v.z
+  };
+}
+
+void transfer_mesh(ta_parameter_writer& writer)
+{
+  uint32_t control = para_control::list_type::translucent
+                   | obj_control::texture
+    | (pcw_offset ? obj_control::offset : 0)
+    ;
+  uint32_t tsp_instruction_word = 0
+                                | tsp_instruction_word::src_alpha_instr::zero
+                                | tsp_instruction_word::dst_alpha_instr::src_alpha
+                                | tsp_instruction_word::texture_u_size::from_int(512)
+                                | tsp_instruction_word::texture_v_size::from_int(512)
+                                ;
+  uint32_t texture_address = texture_memory_alloc.texture.start + font_base;
+  uint32_t texture_control_word = texture_control_word::pixel_format::bump_map
+                                      | texture_control_word::scan_order::non_twiddled
+                                      | texture_control_word::texture_address(texture_address / 8);
+
+  global_polygon_type_0(writer,
+                        control,
+                        tsp_instruction_word,
+                        texture_control_word);
+
+
+  uint32_t base_color = 0;
+  uint32_t offset_color = 0
+    | (k1 << 24)
+    | (k2 << 16)
+    | (k3 << 8)
+    | (q << 0);
+
+  render_quad(writer,
+              transform(position[0]),
+              transform(position[1]),
+              transform(position[2]),
+              transform(position[3]),
+              texture[0],
+              texture[1],
+              texture[2],
+              texture[3],
+              base_color,
+              offset_color);
+}
+
+
+void opaque_string(ta_parameter_writer& writer,
+                   int x, int y,
+                   char * s, int length)
+{
+  font_bitmap::transform_string(writer,
+                                texture_memory_alloc.texture.start + 64,
+                                8,  16, // texture
+                                8,  16, // glyph
+                                16 + x * 8, // position x
+                                16 + y * 16, // position y
+                                s, length,
+                                para_control::list_type::opaque);
+}
+
+void render_k1k2k3q(ta_parameter_writer& writer)
+{
+  char __attribute__((aligned(4))) s[64];
+  for (uint32_t i = 0; i < (sizeof (s)) / 4; i++)
+    reinterpret_cast<uint32_t *>(s)[i] = 0x20202020;
+
+  int offset;
+  offset = unparse_base10(s, k1, 7, ' ');
+  s[0] = 'k';
+  s[1] = '1';
+  s[2] = ':';
+  opaque_string(writer, 1, 1, s, offset);
+
+  offset = unparse_base10(s, k2, 7, ' ');
+  s[0] = 'k';
+  s[1] = '2';
+  s[2] = ':';
+  opaque_string(writer, 1, 2, s, offset);
+
+  offset = unparse_base10(s, k3, 7, ' ');
+  s[0] = 'k';
+  s[1] = '3';
+  s[2] = ':';
+  opaque_string(writer, 1, 3, s, offset);
+
+  offset = unparse_base10(s, q, 7, ' ');
+  s[0] = ' ';
+  s[1] = 'q';
+  s[2] = ':';
+  opaque_string(writer, 1, 4, s, offset);
+
+  offset = unparse_base10(&s[1], pcw_offset, 7, ' ');
+  s[0] = 'o';
+  s[1] = 'f';
+  s[2] = 'f';
+  s[3] = ':';
+  opaque_string(writer, 0, 5, s, offset + 1);
+}
+
+void transfer_scene(ta_parameter_writer& writer, const mat4x4& trans, int animation_tick)
+{
+  // opaque list
+  if (1) {
+    render_k1k2k3q(writer);
+
+    writer.append<ta_global_parameter::end_of_list>() =
+      ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
+  }
+  // translucent list
+  if (1) {
+    transfer_mesh(writer);
+
+    writer.append<ta_global_parameter::end_of_list>() =
+      ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
+  }
+}
+
+void update_analog(mat4x4& screen)
+{
+  int ra = ft0::data_transfer::digital_button::ra(data[0].digital_button) == 0;
+  int la = ft0::data_transfer::digital_button::la(data[0].digital_button) == 0;
+  int da = ft0::data_transfer::digital_button::da(data[0].digital_button) == 0;
+  int ua = ft0::data_transfer::digital_button::ua(data[0].digital_button) == 0;
+
+  int db_x = ft0::data_transfer::digital_button::x(data[0].digital_button) == 0;
+  int db_y = ft0::data_transfer::digital_button::y(data[0].digital_button) == 0;
+  int db_a = ft0::data_transfer::digital_button::a(data[0].digital_button) == 0;
+  int db_b = ft0::data_transfer::digital_button::b(data[0].digital_button) == 0;
+
+  int start = ft0::data_transfer::digital_button::start(data[0].digital_button) == 0;
+  static int last_start = 0;
+
+  if (db_x) {
+    k1 -= 1;
+    if (k1 < 0) k1 = 0;
+  }
+  if (db_y) {
+    k1 += 1;
+    if (k1 > 255) k1 = 255;
+  }
+  if (db_a) {
+    k2 -= 1;
+    if (k2 < 0) k2 = 0;
+  }
+  if (db_b) {
+    k2 += 1;
+    if (k2 > 255) k2 = 255;
+  }
+
+  if (da) {
+    k3 -= 1;
+    if (k3 < 0) k3 = 0;
+  }
+  if (ua) {
+    k3 += 1;
+    if (k3 > 255) k3 = 255;
+  }
+  if (la) {
+    q -= 1;
+    if (q < 0) q = 0;
+  }
+  if (ra) {
+    q += 1;
+    if (q > 255) q = 255;
+  }
+
+  if (start && (start != last_start)) {
+    pcw_offset = !pcw_offset;
+  }
+  last_start = start;
+}
+
+void transfer_ta_fifo_texture_memory_32byte(void * dst, void * src, int length)
+{
+  assert((((int)dst) & 31) == 0);
+  assert((((int)length) & 31) == 0);
+
+  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 & 0x03ffffe0) / 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;
+  }
+}
+
+void transfer_font()
+{
+  const uint8_t * src = reinterpret_cast<const uint8_t *>(&_binary_font_verite_8x16_verite_8x16_data_start);
+  const uint32_t texture_address = texture_memory_alloc.texture.start + 64;
+  font_bitmap::inflate(1,  // pitch
+                       8,  // width
+                       16, // height
+                       texture_address,
+                       8,  // texture_width
+                       16, // texture_height
+                       src);
+}
+
+void transfer_bump_texture()
+{
+  uint32_t offset = texture_memory_alloc.texture.start + font_base;
+  void * dst = reinterpret_cast<void *>(&ta_fifo_texture_memory[offset / 4]);
+  void * src = reinterpret_cast<void *>(&_binary_texture_bump_bump_data_start);
+  uint32_t size = reinterpret_cast<uint32_t>(&_binary_texture_bump_bump_data_size);
+  printf("src %x dst %x size %x\n", (uint32_t)src, (uint32_t)dst, (uint32_t)size);
+  transfer_ta_fifo_texture_memory_32byte(dst, src, size);
+}
+
+void transfer_textures()
+{
+  system.LMMODE0 = 0; // 64-bit address space
+  system.LMMODE1 = 0; // 64-bit address space
+
+  transfer_font();
+  transfer_bump_texture();
+}
+
+uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024 * 3];
+
+int main()
+{
+  sh7091.TMU.TSTR = 0; // stop all timers
+  sh7091.TMU.TOCR = tmu::tocr::tcoe::tclk_is_external_clock_or_input_capture;
+  sh7091.TMU.TCR0 = tmu::tcr0::tpsc::p_phi_256; // 256 / 50MHz = 5.12 μs ; underflows in ~1 hour
+  sh7091.TMU.TCOR0 = 0xffff'ffff;
+  sh7091.TMU.TCNT0 = 0xffff'ffff;
+  sh7091.TMU.TSTR = tmu::tstr::str0::counter_start;
+
+  serial::init(0);
+
+  interrupt_init();
+  transfer_textures();
+  palette_data<3>();
+
+  holly.SOFTRESET = softreset::pipeline_soft_reset
+		  | softreset::ta_soft_reset;
+  holly.SOFTRESET = 0;
+
+  core_init();
+
+  holly.FPU_SHAD_SCALE = fpu_shad_scale::simple_shadow_enable::parameter_selection_volume_mode;
+
+  region_array_multipass(tile_width,
+                         tile_height,
+                         opb_size,
+                         ta_cont_count,
+                         texture_memory_alloc.region_array.start,
+                         texture_memory_alloc.object_list.start);
+
+  background_parameter2(texture_memory_alloc.background[0].start,
+                        0xffffffff);
+
+  ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf, (sizeof (ta_parameter_buf)));
+
+  video_output::set_mode_vga();
+
+  mat4x4 screen_trans = {
+    1, 0, 0, 0,
+    0, 0, -1, 0,
+    0, 1, 0, 7,
+    0, 0, 0, 1,
+  };
+
+  mat4x4 model_trans = {
+    0.805, -0.577,  0.136, 0,
+    0.592,  0.773, -0.224, 0,
+    0.024,  0.262,  0.964, 0,
+    0, 0, 0, 1,
+  };
+
+  do_get_condition();
+  int animation_tick = 0;
+
+  system.IML6NRM = istnrm::end_of_render_tsp
+                 | istnrm::v_blank_in
+                 | istnrm::end_of_transferring_translucent_list;
+
+  while (1) {
+    maple::dma_wait_complete();
+    do_get_condition();
+    writer.offset = 0;
+
+    update_analog(screen_trans);
+    transfer_scene(writer, screen_trans * model_trans, animation_tick);
+
+    while (ta_in_use);
+    while (core_in_use);
+    ta_in_use = 1;
+    ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters.start,
+                               texture_memory_alloc.isp_tsp_parameters.end,
+                               texture_memory_alloc.object_list.start,
+                               texture_memory_alloc.object_list.end,
+                               opb_size[0].total(),
+                               ta_alloc,
+                               tile_width,
+                               tile_height);
+    ta_polygon_converter_writeback(writer.buf, writer.offset);
+    ta_polygon_converter_transfer(writer.buf, writer.offset);
+
+    while (next_frame == 0);
+    next_frame = 0;
+  }
+}
diff --git a/example/example.mk b/example/example.mk
index 3dddc68..c353c60 100644
--- a/example/example.mk
+++ b/example/example.mk
@@ -1006,3 +1006,24 @@ DOOR_OBJ = \
 
 example/door.elf: LDSCRIPT = $(LIB)/main.lds
 example/door.elf: $(START_OBJ) $(DOOR_OBJ)
+
+BUMP_OBJ = \
+	example/bump.o \
+	holly/core.o \
+	holly/region_array.o \
+	holly/background.o \
+	holly/ta_fifo_polygon_converter.o \
+	holly/video_output.o \
+	sh7091/serial.o \
+	maple/maple.o \
+	texture/bump/bump.data.o \
+	sh7091/c_serial.o \
+	printf/printf.o \
+	printf/unparse.o \
+	printf/parse.o \
+	font/font_bitmap.o \
+	font/verite_8x16/verite_8x16.data.o \
+	$(LIBGCC)
+
+example/bump.elf: LDSCRIPT = $(LIB)/main.lds
+example/bump.elf: $(START_OBJ) $(BUMP_OBJ)
diff --git a/font/font_bitmap.cpp b/font/font_bitmap.cpp
index 8f3dc6e..bfd15fd 100644
--- a/font/font_bitmap.cpp
+++ b/font/font_bitmap.cpp
@@ -2,7 +2,6 @@
 
 #include "../holly/holly.hpp"
 #include "../holly/core_bits.hpp"
-#include "../holly/texture_memory_alloc3.hpp"
 #include "../holly/isp_tsp.hpp"
 #include "../holly/ta_parameter.hpp"
 #include "../holly/ta_global_parameter.hpp"
@@ -19,6 +18,7 @@ namespace font_bitmap {
 static inline void inflate_character(const uint32_t pitch,
                                      const uint32_t width,
                                      const uint32_t height,
+                                     const uint32_t texture_address,
                                      const uint32_t texture_width,
                                      const uint32_t texture_height,
                                      const uint8_t * src,
@@ -47,7 +47,7 @@ static inline void inflate_character(const uint32_t pitch,
     }
   }
 
-  auto texture = reinterpret_cast<volatile uint32_t *>(&texture_memory64[texture_memory_alloc.texture.start / 4]);
+  auto texture = reinterpret_cast<volatile uint32_t *>(&texture_memory64[texture_address / 4]);
 
   uint8_t temp2[texture_width * texture_height / 2];
 
@@ -65,6 +65,7 @@ static inline void inflate_character(const uint32_t pitch,
 uint32_t inflate(const uint32_t pitch,
 		 const uint32_t width,
 		 const uint32_t height,
+                 const uint32_t texture_address,
 		 const uint32_t texture_width,
 		 const uint32_t texture_height,
 		 const uint8_t * src)
@@ -73,12 +74,13 @@ uint32_t inflate(const uint32_t pitch,
     inflate_character(pitch,
                       width,
                       height,
+                      texture_address,
                       texture_width,
                       texture_height,
                       src,
                       ix);
   }
-  return ((0x7f - 0x20) + 1) * texture_width * texture_height / 2;
+  return texture_address + ((0x7f - 0x20) + 1) * texture_width * texture_height / 2;
 }
 
 void palette_data()
@@ -107,6 +109,7 @@ const struct quad_vertex quad_vertices[4] = {
 constexpr uint32_t quad_length = (sizeof (quad_vertices)) / (sizeof (struct quad_vertex));
 
 void transform_string(ta_parameter_writer& parameter,
+                      const uint32_t texture_address,
                       const uint32_t texture_width,
                       const uint32_t texture_height,
                       const uint32_t glyph_width,
@@ -137,7 +140,6 @@ void transform_string(ta_parameter_writer& parameter,
     if (len < 0) {
       if (s[string_ix] == 0) break;
     } else if (string_ix >= len) break;
-    const uint32_t texture_address = texture_memory_alloc.texture.start;
     const uint32_t glyph_address = texture_address + texture_width * texture_height * (s[string_ix] - ' ') / 2;
     const uint32_t texture_control_word = texture_control_word::pixel_format::_4bpp_palette
 					| texture_control_word::scan_order::twiddled
diff --git a/font/font_bitmap.hpp b/font/font_bitmap.hpp
index ae50c38..036179b 100644
--- a/font/font_bitmap.hpp
+++ b/font/font_bitmap.hpp
@@ -9,11 +9,13 @@ namespace font_bitmap {
 uint32_t inflate(const uint32_t pitch,
 		 const uint32_t width,
 		 const uint32_t height,
+                 const uint32_t texture_address,
 		 const uint32_t texture_width,
 		 const uint32_t texture_height,
 		 const uint8_t * src);
 
 void transform_string(ta_parameter_writer& parameter,
+                      const uint32_t texture_address,
                       const uint32_t texture_width,
                       const uint32_t texture_height,
                       const uint32_t glyph_width,
diff --git a/math/vec3.hpp b/math/vec3.hpp
index f4868df..b91f72a 100644
--- a/math/vec3.hpp
+++ b/math/vec3.hpp
@@ -166,3 +166,9 @@ inline constexpr T magnitude(vec<3, T> const& v)
 {
   return sqrt(dot(v, v));
 }
+
+template <typename T>
+inline constexpr vec<3, T> normalize(vec<3, T> const& v)
+{
+  return v / magnitude(v);
+}
diff --git a/texture/bump/bump.data b/texture/bump/bump.data
new file mode 100644
index 0000000..d7d17b6
Binary files /dev/null and b/texture/bump/bump.data differ
diff --git a/texture/bump/bump.data.h b/texture/bump/bump.data.h
new file mode 100644
index 0000000..8c26f77
--- /dev/null
+++ b/texture/bump/bump.data.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern uint32_t _binary_texture_bump_bump_data_start __asm("_binary_texture_bump_bump_data_start");
+extern uint32_t _binary_texture_bump_bump_data_end __asm("_binary_texture_bump_bump_data_end");
+extern uint32_t _binary_texture_bump_bump_data_size __asm("_binary_texture_bump_bump_data_size");
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/tools/bump_convert.py b/tools/bump_convert.py
new file mode 100644
index 0000000..0294845
--- /dev/null
+++ b/tools/bump_convert.py
@@ -0,0 +1,115 @@
+from PIL import Image
+import sys
+import math
+from decimal import Decimal
+from math import acos, asin, pi, isnan
+import struct
+
+im = Image.open(sys.argv[1])
+im = im.convert("RGB")
+
+out = Image.new("RGB", im.size)
+
+width, height = im.size
+
+def mul(a, b):
+    return (a[0] * b[0], a[1] * b[1], a[2] * b[2])
+
+def dot(a, b):
+    x, y, z = mul(a, b)
+    return x + y + z
+
+def magnitude(v):
+  return math.sqrt(dot(v, v));
+
+def remap(value, l1, h1, l2, h2):
+    if (value == 255):
+        value = 256
+    d = Decimal
+    mul = (d(h2) - d(l2)) / (d(h1) - d(l1))
+    output = d(l2) + (d(value) - d(l1)) * mul
+
+    if output == 0:
+        output = 0.0000000001
+    return float(output)
+
+def remap_normal(x, y, z):
+    vec = (
+        remap(x, 0, 256, -1, 1),
+        remap(y, 0, 256, -1, 1),
+        remap(z, 0, 256, 1, -1),
+    )
+    div = 1.0 / magnitude(vec)
+    return vec
+
+tests = [
+    ((0,0,-1), (128,128,255)),
+    ((1,1,0), (255,255,128)),
+    ((1,0,0), (255,128,128)),
+    ((0,1,0), (128,255,128)),
+    ((-1,0,0), (0,128,128)),
+    ((0,-1,0), (128,0,128)),
+    ((-1,-1,0), (0,0,128)),
+]
+for xyz, rgb in tests:
+    rx, ry, rz = remap_normal(*rgb)
+    if abs(rx - 0) < 0.01:
+        rx = 0
+    if abs(ry - 0) < 0.01:
+        ry = 0
+    if abs(rz - 0) < 0.01:
+        rz = 0
+    r = (rx, ry, rz)
+    #print(r, xyz)
+    #assert r == xyz, (r, xyz)
+
+x_vec = (1, 0, 0)
+
+buf_out = [0] * width * height
+
+for v in range(height):
+    for u in range(width):
+        px = im.getpixel((u, v))
+        x, y, z = remap_normal(*px)
+        #assert z >= 0, (x, y, z)
+
+        pos_xy = (x, y, 0)
+
+        r = 0
+        if pos_xy[0] != 0 and pos_xy[1] != 0:
+            mag = (magnitude(x_vec) * magnitude(pos_xy))
+            assert mag != 0, mag
+            d = dot(x_vec, pos_xy)
+            if d == 0:
+                print(pos_xy)
+            r = acos(d / mag)
+            if pos_xy[1] < 0:
+                r = 2 * pi - r
+            assert not isnan(r)
+        zz = (-z) if z < 0 else 0
+        s = asin(zz)
+        #s = zz * pi / 2
+
+        assert r >= 0 and r <= pi * 2, r
+        assert s >= 0 and s <= pi / 2, (z, zz, s)
+
+        if u >= 163 and u <= 165:
+            if v >= 334 and v <= 336:
+                print((u, v), (px[2]), z, s)
+
+        r_255 = int(remap(r, 0, pi * 2, 0, 255))
+        s_255 = int(remap(s, 0, pi / 2, 0, 255))
+
+        assert r_255 >= 0 and r_255 <= 255, r_255
+        assert s_255 >= 0 and s_255 <= 255, s_255
+
+        buf_out[(v * width) + u] = (s_255 << 8) | (r_255 << 0)
+
+        #int((px[0] * px[1]) / 255)
+        out.putpixel((u, v), (0, s_255, 0))
+
+out.save("test.png")
+
+with open(sys.argv[2], 'wb') as f:
+    for v in buf_out:
+        f.write(struct.pack("<H", v))
diff --git a/tools/bump_repack.py b/tools/bump_repack.py
new file mode 100644
index 0000000..1a538b9
--- /dev/null
+++ b/tools/bump_repack.py
@@ -0,0 +1,15 @@
+from PIL import Image
+import sys
+import struct
+
+im = Image.open(sys.argv[1])
+im = im.convert("RGB")
+width, height = im.size
+
+with open(sys.argv[2], 'wb') as f:
+    for v in range(height):
+        for u in range(width):
+            px = im.getpixel((u, v))
+            r, s, _ = px
+            value = (s << 8) | (r << 0)
+            f.write(struct.pack("<H", value))