dreamcast/example/testscene.cpp
2025-01-31 06:22:38 -06:00

263 lines
9.2 KiB
C++

#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/serial.hpp"
#include "sh7091/store_queue.hpp"
#include "systembus.hpp"
#include "systembus_bits.hpp"
#include "model/model.h"
#include "model/testscene/model.h"
using vec3 = vec<3, float>;
static float theta = 0;
static inline vec3 transform_vertex(vec3 vec)
{
float x9 = vec.x;
float y9 = vec.y;
float z9 = vec.z;
float x0 = x9 * cos(theta) - z9 * sin(theta);
float y0 = y9;
float z0 = x9 * sin(theta) + z9 * cos(theta);
float x1 = x0;
float y1 = y0 * cos(theta) - z0 * sin(theta);
float z1 = y0 * sin(theta) + z0 * cos(theta);
float x2 = x1;
float y2 = y1;
float z2 = z1 + 4.5;
float x3 = x2 / z2;
float y3 = y2 / z2;
float z3 = 1.0 / z2;
float x = x3 * 240 + 320;
float y = y3 * 240 + 320;
float z = z3;
return {x, y, z};
}
static uint32_t base_color = 0xffc0c000;
static inline void transfer_triangle(vertex_position * position, union triangle * triangle)
{
base_color ^= base_color << 13;
base_color ^= base_color >> 17;
base_color ^= base_color << 5;
vec3 v1 = transform_vertex(position[triangle->a.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v1.x, v1.y, v1.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
vec3 v2 = transform_vertex(position[triangle->b.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v2.x, v2.y, v2.z,
0xffc0c000);
sq_transfer_32byte(ta_fifo_polygon_converter);
vec3 v3 = transform_vertex(position[triangle->c.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
v3.x, v3.y, v3.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
}
static inline void transfer_quadrilateral(vertex_position * position, union quadrilateral * quadrilateral)
{
base_color ^= base_color << 13;
base_color ^= base_color >> 17;
base_color ^= base_color << 5;
vec3 v1 = transform_vertex(position[quadrilateral->a.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v1.x, v1.y, v1.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
vec3 v2 = transform_vertex(position[quadrilateral->b.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v2.x, v2.y, v2.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
vec3 v3 = transform_vertex(position[quadrilateral->c.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
v3.x, v3.y, v3.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v1.x, v1.y, v1.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v3.x, v3.y, v3.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
vec3 v4 = transform_vertex(position[quadrilateral->d.position]);
*reinterpret_cast<ta_vertex_parameter::polygon_type_0 *>(store_queue) =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
v4.x, v4.y, v4.z,
base_color);
sq_transfer_32byte(ta_fifo_polygon_converter);
}
static inline void transfer_triangles(struct model * model, struct object * object)
{
if (object->triangle_count == 0)
return;
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| para_control::list_type::opaque
| obj_control::col_type::packed_color
| obj_control::gouraud;
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::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
| tsp_instruction_word::fog_control::no_fog;
const uint32_t texture_control_word = 0;
*reinterpret_cast<ta_global_parameter::polygon_type_0 *>(store_queue) =
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
);
sq_transfer_32byte(ta_fifo_polygon_converter);
for (int i = 0; i < object->triangle_count; i++) {
transfer_triangle(model->position, &object->triangle[i]);
}
for (int i = 0; i < object->quadrilateral_count; i++) {
transfer_quadrilateral(model->position, &object->quadrilateral[i]);
}
}
void transfer_scene()
{
struct model * model = &testscene_model;
struct object * object = &testscene_Waterfall;
transfer_triangles(model, object);
*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);
}
void main()
{
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::_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();
video_output::set_mode_vga();
const int framebuffer_width = 640;
const int framebuffer_height = 480;
const int tile_width = framebuffer_width / 32;
const 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);
background_parameter2(texture_memory_alloc.background[0].start,
0xff220033);
const float degree = 0.017453292519943295;
int frame = 0;
while (1) {
base_color = 0xffc0c000;
ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters[0].start,
texture_memory_alloc.isp_tsp_parameters[0].end,
texture_memory_alloc.object_list[0].start,
texture_memory_alloc.object_list[0].end,
opb_size[0].total(),
ta_alloc,
tile_width,
tile_height);
transfer_scene();
ta_wait_opaque_list();
core_start_render2(texture_memory_alloc.region_array[0].start,
texture_memory_alloc.isp_tsp_parameters[0].start,
texture_memory_alloc.background[0].start,
texture_memory_alloc.framebuffer[0].start,
framebuffer_width);
core_wait_end_of_render_video();
while (!spg_status::vsync(holly.SPG_STATUS));
holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[0].start;
while (spg_status::vsync(holly.SPG_STATUS));
frame += 1;
theta += degree;
if (frame > 300)
break;
}
serial::string("return\nreturn\nreturn\n");
}