example: add sheik

example/example.mk

@@ -581,3 +581,17 @@ CUBE_VQ_OBJ = \
 
 example/cube_vq.elf: LDSCRIPT = $(LIB)/alt.lds
 example/cube_vq.elf: $(START_OBJ) $(CUBE_VQ_OBJ)
+
+SHEIK_OBJ = \
+	example/sheik.o \
+	holly/core.o \
+	holly/region_array.o \
+	holly/background.o \
+	holly/ta_fifo_polygon_converter.o \
+	holly/video_output.o \
+	sh7091/serial.o \
+	model/sheik/sheik_00.data.o \
+	model/sheik/xc_eye01.data.o
+
+example/sheik.elf: LDSCRIPT = $(LIB)/alt.lds
+example/sheik.elf: $(START_OBJ) $(SHEIK_OBJ)

example/sheik.cpp

@@ -0,0 +1,271 @@
+#include <cstdint>
+
+#include "holly/isp_tsp.hpp"
+#include "holly/ta_parameter.hpp"
+#include "holly/ta_global_parameter.hpp"
+#include "holly/ta_vertex_parameter.hpp"
+#include "holly/ta_bits.hpp"
+#include "holly/ta_fifo_polygon_converter.hpp"
+#include "holly/holly.hpp"
+#include "holly/core_bits.hpp"
+#include "holly/core.hpp"
+#include "holly/region_array.hpp"
+#include "holly/background.hpp"
+#include "holly/video_output.hpp"
+#include "holly/texture_memory_alloc2.hpp"
+#include "sh7091/store_queue.hpp"
+#include "sh7091/serial.hpp"
+
+#include "systembus.hpp"
+#include "systembus_bits.hpp"
+
+#include "twiddle.hpp"
+
+#include "math/vec2.hpp"
+
+#include "model/sheik/sheik_00.data.h"
+#include "model/sheik/xc_eye01.data.h"
+#include "model/sheik/material.h"
+#include "model/sheik/model.h"
+
+void transfer_scene(float theta)
+{
+  const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
+                                        | para_control::list_type::opaque
+                                        | obj_control::col_type::intensity_mode_1
+                                        | obj_control::texture
+                                        | obj_control::gouraud;
+
+  const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
+                                          | isp_tsp_instruction_word::culling_mode::cull_if_negative;
+
+
+  for (int j = 0; j < sheik_model.object_count; j++) {
+    struct object * object = sheik_model.object[j];
+    struct material_descriptor * mat = &material[object->material];
+
+    const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::one
+					| tsp_instruction_word::dst_alpha_instr::zero
+					| tsp_instruction_word::fog_control::no_fog
+					| tsp_instruction_word::texture_shading_instruction::modulate
+					| tsp_instruction_word::texture_u_size::from_int(mat->pixel.width)
+					| tsp_instruction_word::texture_v_size::from_int(mat->pixel.height);
+
+    const uint32_t texture_address = texture_memory_alloc::texture.start + mat->pixel.vram_offset;
+    const uint32_t texture_control_word = texture_control_word::pixel_format::_1555
+					| texture_control_word::scan_order::non_twiddled
+					| texture_control_word::texture_address(texture_address / 8);
+
+    *reinterpret_cast<ta_global_parameter::polygon_type_1 *>(store_queue) =
+      ta_global_parameter::polygon_type_1(parameter_control_word,
+					  isp_tsp_instruction_word,
+					  tsp_instruction_word,
+					  texture_control_word, // texture_control_word
+					  1.0, // face color alpha
+					  1.0, // face color r
+					  1.0, // face color g
+					  1.0  // face color b
+					  );
+    sq_transfer_32byte(ta_fifo_polygon_converter);
+
+    for (int i = 0; i < object->triangle_count; i++) {
+      for (int k = 0; k < 3; k++) {
+	int position_ix = object->triangle[i].v[k].position;
+	float x0 = sheik_model.position[position_ix].x;
+	float y0 = sheik_model.position[position_ix].y;
+	float z0 = sheik_model.position[position_ix].z;
+
+	float x1 = x0 * cos(theta) - z0 * sin(theta);
+	float y1 = y0 - 3;
+	float z1 = x0 * sin(theta) + z0 * cos(theta);
+
+	/*
+	float x = x1;
+	float y = y1 * cos(theta) - z1 * sin(theta);
+	float z = y1 * sin(theta) + z1 * cos(theta);
+	*/
+	float x = x1;
+	float y = -y1;
+	float z = z1;
+
+	z += 3.5;
+
+	x /= z;
+	y /= z;
+
+	// do rotation
+	x = x * 240 + 320;
+	y = y * 240 + 240;
+
+	z = 1/z;
+
+	bool end_of_strip = k == 2;
+
+	int texture_ix = object->triangle[i].v[k].texture;
+	float u = sheik_model.texture[texture_ix].u;
+	float v = 1.0 - sheik_model.texture[texture_ix].v;
+
+	*reinterpret_cast<ta_vertex_parameter::polygon_type_7 *>(store_queue) =
+	  ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(end_of_strip),
+					      x, y, z,
+					      u, v,
+					      1.0, // base intensity
+					      1.0  // offset intensity
+					      );
+	sq_transfer_32byte(ta_fifo_polygon_converter);
+      }
+    }
+  }
+
+  *reinterpret_cast<ta_global_parameter::end_of_list *>(store_queue) =
+    ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
+  sq_transfer_32byte(ta_fifo_polygon_converter);
+}
+
+template <typename T>
+inline void copy(T * dst, const T * src, const int32_t n) noexcept
+{
+  int32_t n_t = n / (sizeof (T));
+  while (n_t > 0) {
+    *dst++ = *src++;
+    n_t--;
+  }
+}
+
+void texture_init()
+{
+  int length = (sizeof (material)) / (sizeof (material[0]));
+  for (int i = 0; i < length; i++) {
+    uint32_t offset = texture_memory_alloc::texture.start + material[i].pixel.vram_offset;
+
+    copy<volatile uint32_t>(&texture_memory64[offset / 4],
+			    reinterpret_cast<uint32_t *>(material[i].pixel.start),
+			    material[i].pixel.size);
+  }
+}
+
+void dump_ram(const volatile uint32_t * mem, const uint32_t len)
+{
+  uint32_t sum = 0;
+  for (uint32_t i = 0; i < len; i++) {
+    uint32_t m = mem[i];
+    for (int j = 0; j < 4; j++) {
+      uint8_t n = ((uint8_t*)&m)[j];
+      sum += n;
+      serial::hexlify(n);
+    }
+    if ((i & 0xf) == 0xf)
+      serial::character('\n');
+  }
+  serial::character('\n');
+  serial::integer<uint32_t>(sum);
+}
+
+void main()
+{
+  serial::init(4);
+  constexpr uint32_t ta_alloc = 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::_32x4byte;
+
+  constexpr int render_passes = 1;
+  constexpr struct opb_size opb_size[render_passes] = {
+    {
+      .opaque = 32 * 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();
+
+  video_output::set_mode_vga();
+
+  constexpr int framebuffer_width = 640;
+  constexpr int framebuffer_height = 480;
+  constexpr int tile_width = framebuffer_width / 32;
+  constexpr int tile_height = framebuffer_height / 32;
+
+  region_array_multipass(tile_width,
+			 tile_height,
+			 opb_size,
+			 render_passes,
+			 texture_memory_alloc::region_array[0].start,
+			 texture_memory_alloc::object_list[0].start);
+  region_array_multipass(tile_width,
+			 tile_height,
+			 opb_size,
+			 render_passes,
+			 texture_memory_alloc::region_array[1].start,
+			 texture_memory_alloc::object_list[1].start);
+
+  background_parameter2(texture_memory_alloc::background[0].start,
+			0xff220033);
+  background_parameter2(texture_memory_alloc::background[1].start,
+			0xff220033);
+
+  texture_init();
+
+  const float degree = 0.017453292519943295;
+  float theta = 0;
+  int ta = -1;
+  int core = -2;
+  while (1) {
+    //serial::integer<uint8_t>(ta, ' ');
+    //serial::integer<uint8_t>(core, '\n');
+    if (core >= 0) {
+      // core = 0  ; core = 1
+      // ta = 1    ; ta = 0
+      core_wait_end_of_render_video();
+      while (!spg_status::vsync(holly.SPG_STATUS));
+      holly.FB_R_SOF1 = texture_memory_alloc::framebuffer[core].start;
+      while (spg_status::vsync(holly.SPG_STATUS));
+    }
+
+    // core = -2 ; core = 1 ; core = 0
+    // ta = -1   ; ta = 0   ; ta = 1
+    core += 1;
+    ta += 1;
+    if (core > 1) core = 0;
+    if (ta > 1) ta = 0;
+
+    if (core >= 0) {
+      // core = 1 ; core = 0
+      // ta = 0   ; ta = 1
+      ta_wait_opaque_list();
+  system.ISTNRM = istnrm::end_of_render_tsp
+		| istnrm::end_of_render_isp
+		| istnrm::end_of_render_video;
+
+      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);
+    }
+
+
+    // core = -1 ; core = 1 ; core = 0
+    // ta = 0    ; ta = 0   ; ta = 1
+  system.ISTNRM = istnrm::end_of_transferring_opaque_list;
+    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);
+    transfer_scene(theta);
+
+    theta += degree;
+  }
+}

holly/texture_memory_alloc2.hpp

@@ -49,11 +49,11 @@ constexpr start_end background[2] = {
 constexpr start_end object_list[2] = {
   { // bus A
     .start = 0x10'0000,
-    .end   = 0x20'0000 - 0x10,
+    .end   = 0x20'0000 - 0x20,
   },
   { // bus B
     .start = 0x50'0000,
-    .end   = 0x60'0000 - 0x10,
+    .end   = 0x60'0000 - 0x20,
   }
 };
 constexpr start_end framebuffer[2] = {

model/sheik/material.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "model/material.h"
+
+enum material {
+  body,
+  eyes,
+};
+
+struct material_descriptor material[] = {
+  [body] = {
+    .pixel = {
+      .start = (uint8_t *)&_binary_model_sheik_sheik_00_data_start,
+      .size = (int)&_binary_model_sheik_sheik_00_data_size,
+      .vram_offset = 0,
+      .width = 128,
+      .height = 256,
+    },
+  },
+  [eyes] = {
+    .pixel = {
+      .start = (uint8_t *)&_binary_model_sheik_xc_eye01_data_start,
+      .size = (int)&_binary_model_sheik_xc_eye01_data_size,
+      .vram_offset = 65536,
+      .width = 32,
+      .height = 32,
+    },
+  },
+};
+

model/sheik/sheik.mtl

@@ -0,0 +1,22 @@
+# Blender 4.1.1 MTL File: 'None'
+# www.blender.org
+
+newmtl body
+Ns 1000.000000
+Ka 1.000000 1.000000 1.000000
+Ks 0.000000 0.000000 0.000000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 1
+map_Kd /home/bilbo/dreamcast/model_gen/sheik/sheik_00.png
+
+newmtl eyes
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2
+map_Kd /home/bilbo/dreamcast/model_gen/sheik/xc_eye01.png

model/sheik/sheik_00.data.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <cstdint>
+extern uint32_t _binary_model_sheik_sheik_00_data_start __asm("_binary_model_sheik_sheik_00_data_start");
+extern uint32_t _binary_model_sheik_sheik_00_data_end __asm("_binary_model_sheik_sheik_00_data_end");
+extern uint32_t _binary_model_sheik_sheik_00_data_size __asm("_binary_model_sheik_sheik_00_data_size");

model/sheik/xc_eye01.data.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <cstdint>
+extern uint32_t _binary_model_sheik_xc_eye01_data_start __asm("_binary_model_sheik_xc_eye01_data_start");
+extern uint32_t _binary_model_sheik_xc_eye01_data_end __asm("_binary_model_sheik_xc_eye01_data_end");
+extern uint32_t _binary_model_sheik_xc_eye01_data_size __asm("_binary_model_sheik_xc_eye01_data_size");