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dreamcast/example/q3bsp.cpp

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#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_alloc3.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 "q3bsp/q3bsp.h"
#include "pk/maps/20kdm2.bsp.h"
#include "math/vec2.hpp"
#include "math/vec3.hpp"
#include "math/vec4.hpp"
#include "math/mat4x4.hpp"
#include "math/geometry.hpp"
#include "interrupt.hpp"
#include "pk/textures/e7/e7walldesign01b.data.h"
#include "pk/textures/e7/e7steptop2.data.h"
#include "pk/textures/e7/e7dimfloor.data.h"
#include "pk/textures/e7/e7brickfloor01.data.h"
#include "pk/textures/e7/e7bmtrim.data.h"
#include "pk/textures/e7/e7sbrickfloor.data.h"
#include "pk/textures/e7/e7brnmetal.data.h"
#include "pk/textures/e7/e7beam02_red.data.h"
#include "pk/textures/e7/e7swindow.data.h"
#include "pk/textures/e7/e7bigwall.data.h"
#include "pk/textures/e7/e7panelwood.data.h"
#include "pk/textures/e7/e7beam01.data.h"
#include "pk/textures/gothic_floor/xstepborder5.data.h"
#include "pk/textures/liquids/lavahell.data.h"
#include "pk/textures/e7/e7steptop.data.h"
#include "pk/textures/gothic_trim/metalblackwave01.data.h"
#include "pk/textures/stone/pjrock1.data.h"
#include "pk/models/mapobjects/timlamp/timlamp.data.h"
#include "pk/textures/sfx/flame2.data.h"
#include "pk/models/mapobjects/gratelamp/gratetorch2.data.h"
#include "pk/models/mapobjects/gratelamp/gratetorch2b.data.h"
#include "pk/texture.h"
using vec2 = vec<2, float>;
using vec3 = vec<3, float>;
using vec4 = vec<4, float>;
using mat4x4 = mat<4, 4, float>;
#define _fsrra(n) (1.0f / (__builtin_sqrtf(n)))
static ft0::data_transfer::data_format data[4];
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];
}
}
}
struct position_normal {
vec3 position;
vec3 normal;
};
static position_normal vertex_cache[16384];
static inline vec3 normal_transform(mat4x4& trans, vec3 normal)
{
vec4 n = trans * (vec4){normal.x, normal.y, normal.z, 0.f}; // no translation component
return {n.x, n.y, n.z};
}
static inline vec3 screen_transform(vec3 v)
{
float dim = 480 / 2.0;
return {
v.x / (1.f * v.z) * dim + 640 / 2.0f,
v.y / (1.f * v.z) * dim + 480 / 2.0f,
1 / v.z,
};
}
void global_polygon_type_1(ta_parameter_writer& writer,
uint32_t obj_control_texture,
uint32_t texture_u_v_size,
uint32_t texture_control_word)
{
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::gouraud
| obj_control_texture
;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| isp_tsp_instruction_word::culling_mode::cull_if_negative
;
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::filter_mode::bilinear_filter
| tsp_instruction_word::texture_shading_instruction::modulate
| texture_u_v_size
;
const float a = 1.0f;
const float r = 1.0f;
const float g = 1.0f;
const float b = 1.0f;
writer.append<ta_global_parameter::polygon_type_1>() =
ta_global_parameter::polygon_type_1(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
texture_control_word,
a,
r,
g,
b
);
}
void global_texture(ta_parameter_writer& writer, int ix)
{
struct pk_texture * texture = &textures[ix];
uint32_t texture_u_v_size = tsp_instruction_word::texture_u_size::from_int(texture->width)
| tsp_instruction_word::texture_v_size::from_int(texture->height)
;
uint32_t texture_address = texture_memory_alloc.texture.start + texture->offset * 2;
uint32_t texture_control_word = texture_control_word::pixel_format::_565
| texture_control_word::scan_order::non_twiddled
| texture_control_word::texture_address(texture_address / 8)
;
global_polygon_type_1(writer,
obj_control::texture,
texture_u_v_size,
texture_control_word);
}
void transform_vertices(uint8_t * buf, int length, mat4x4& trans)
{
q3bsp_vertex_t * vert = reinterpret_cast<q3bsp_vertex_t *>(buf);
int count = length / (sizeof (struct q3bsp_vertex));
for (int i = 0; i < count; i++) {
vec3 v = {vert[i].position[0], vert[i].position[1], vert[i].position[2]};
vec3 n = {vert[i].normal[0], vert[i].normal[1], vert[i].normal[2]};
//printf("%f %f %f\n", v.x, v.y, v.z);
vertex_cache[i].position = screen_transform(trans * v);
vertex_cache[i].normal = normal_transform(trans, n);
}
}
static inline void render_tri_type_2(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
float ai,
float bi,
float ci)
{
writer.append<ta_vertex_parameter::polygon_type_2>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(false),
ap.x, ap.y, ap.z,
ai);
writer.append<ta_vertex_parameter::polygon_type_2>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(false),
bp.x, bp.y, bp.z,
bi);
writer.append<ta_vertex_parameter::polygon_type_2>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(true),
cp.x, cp.y, cp.z,
ci);
}
static inline void render_tri_type_7(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
vec2 at,
vec2 bt,
vec2 ct,
float ai,
float bi,
float ci)
{
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
ap.x, ap.y, ap.z,
at.x, at.y,
ai,
0);
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
bp.x, bp.y, bp.z,
bt.x, bt.y,
bi,
0);
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(true),
cp.x, cp.y, cp.z,
ct.x, ct.y,
ci,
0);
}
static inline float inverse_length(vec3 v)
{
float f = dot(v, v);
return _fsrra(f);
}
float light_intensity(vec3 light_vec, vec3 n)
{
float n_dot_l = dot(n, light_vec);
float intensity = 0.4f;
if (n_dot_l > 0) {
intensity += 0.5f * n_dot_l * (inverse_length(n) * inverse_length(light_vec));
if (intensity > 1.0f)
intensity = 1.0f;
}
return intensity;
}
void transfer_faces(uint8_t * buf, q3bsp_header_t * header, ta_parameter_writer& writer)
{
q3bsp_direntry * ve = &header->direntries[LUMP_VERTEXES];
q3bsp_direntry * me = &header->direntries[LUMP_MESHVERTS];
q3bsp_direntry * fe = &header->direntries[LUMP_FACES];
q3bsp_vertex_t * vert = reinterpret_cast<q3bsp_vertex_t *>(&buf[ve->offset]);
q3bsp_meshvert_t * meshvert = reinterpret_cast<q3bsp_meshvert_t *>(&buf[me->offset]);
q3bsp_face_t * face = reinterpret_cast<q3bsp_face_t *>(&buf[fe->offset]);
int face_count = fe->length / (sizeof (struct q3bsp_face));
const vec3 light_vec = {20, 20, 20};
int textures_length = (sizeof (textures)) / (sizeof (textures[0]));
int last_texture = -1;
for (int i = 0; i < face_count; i++) {
int meshvert_ix = face[i].meshvert;
q3bsp_meshvert_t * mv = &meshvert[meshvert_ix];
int triangles = face[i].n_meshverts / 3;
bool has_texture = 1 &&
(face[i].texture >= 0) &&
(face[i].texture < textures_length) &&
(textures[face[i].texture].size != 0);
if (face[i].texture != last_texture) {
last_texture = face[i].texture;
if (has_texture) {
global_texture(writer, face[i].texture);
} else {
global_polygon_type_1(writer, 0, 0, 0);
}
}
for (int j = 0; j < triangles; j++) {
int aix = mv[j * 3 + 0].offset + face[i].vertex;
int bix = mv[j * 3 + 1].offset + face[i].vertex;
int cix = mv[j * 3 + 2].offset + face[i].vertex;
vec3 ap = vertex_cache[aix].position;
vec3 bp = vertex_cache[bix].position;
vec3 cp = vertex_cache[cix].position;
if (ap.z < 0 || bp.z < 0 || cp.z < 0) {
continue;
}
vec3 n = vertex_cache[aix].normal;
float li = light_intensity(light_vec, n);
/*
printf("{%f %f %f} {%f %f %f} {%f %f %f}\n",
ap.x, ap.y, ap.z,
bp.x, bp.y, bp.z,
cp.x, cp.y, cp.z);
*/
if (has_texture) {
float v_mul = textures[face[i].texture].v_mul;
vec2 at = {vert[aix].texcoord[0], vert[aix].texcoord[1] * v_mul};
vec2 bt = {vert[bix].texcoord[0], vert[bix].texcoord[1] * v_mul};
vec2 ct = {vert[cix].texcoord[0], vert[cix].texcoord[1] * v_mul};
//printf("{%f %f} {%f %f} {%f %f}\n", at.x, at.y, bt.x, bt.y, ct.x, ct.y);
render_tri_type_7(writer,
ap,
bp,
cp,
at,
bt,
ct,
li,
li,
li);
} else {
render_tri_type_2(writer,
ap,
bp,
cp,
li,
li,
li);
}
}
}
}
void transfer_scene(ta_parameter_writer& writer, const mat4x4& screen_trans)
{
uint8_t * buf = reinterpret_cast<uint8_t *>(&_binary_pk_maps_20kdm2_bsp_start);
q3bsp_header_t * header = reinterpret_cast<q3bsp_header_t *>(buf);
mat4x4 trans = screen_trans;
q3bsp_direntry * ve = &header->direntries[LUMP_VERTEXES];
transform_vertices(&buf[ve->offset], ve->length, trans);
transfer_faces(buf, header, writer);
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
}
uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
constexpr inline mat4x4 rotate_x(float t)
{
mat4x4 r = {
1, 0, 0, 0,
0, cos(t), -sin(t), 0,
0, sin(t), cos(t), 0,
0, 0, 0, 1,
};
return r;
}
constexpr inline mat4x4 rotate_y(float t)
{
mat4x4 r = {
cos(t), 0, sin(t), 0,
0, 1, 0, 0,
-sin(t), 0, cos(t), 0,
0, 0, 0, 1,
};
return r;
}
constexpr inline mat4x4 rotate_z(float t)
{
mat4x4 r = {
cos(t), -sin(t), 0, 0,
sin(t), cos(t), 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
};
return r;
}
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;
}
}
void transfer_textures()
{
system.LMMODE0 = 0; // 64-bit address space
system.LMMODE1 = 0; // 64-bit address space
int textures_length = (sizeof (textures)) / (sizeof (textures[0]));
for (int i = 0; i < textures_length; i++) {
uint32_t offset = texture_memory_alloc.texture.start + textures[i].offset * 2;
void * dst = reinterpret_cast<void *>(&ta_fifo_texture_memory[offset / 4]);
void * src = textures[i].start;
uint32_t size = textures[i].size;
transfer_ta_fifo_texture_memory_32byte(dst, src, size);
}
}
mat4x4 update_analog(mat4x4& screen)
{
const float x_ = static_cast<float>(data[0].analog_coordinate_axis[2] - 0x80) / 127.f;
const float y_ = static_cast<float>(data[0].analog_coordinate_axis[3] - 0x80) / 127.f;
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;
float x = 0;
if (ra && !la) x = -10;
if (la && !ra) x = 10;
float z = 0;
if (ua && !da) z = -10;
if (da && !ua) z = 10;
mat4x4 t = {
1, 0, 0, x,
0, 1, 0, 0,
0, 0, 1, z,
0, 0, 0, 1,
};
float yt = 0.05f * x_;
float xt = 0.05f * y_;
mat4x4 rx = {
1, 0, 0, 0,
0, cos(xt), -sin(xt), 0,
0, sin(xt), cos(xt), 0,
0, 0, 0, 1,
};
mat4x4 ry = {
cos(yt), 0, sin(yt), 0,
0, 1, 0, 0,
-sin(yt), 0, cos(yt), 0,
0, 0, 0, 1,
};
return rx * ry * t * screen;
}
int main()
{
serial::init(0);
interrupt_init();
transfer_textures();
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 ta_cont_count = 1;
constexpr struct opb_size opb_size[ta_cont_count] = {
{
.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,
ta_cont_count,
texture_memory_alloc.region_array[i].start,
texture_memory_alloc.object_list[i].start);
background_parameter2(texture_memory_alloc.background[i].start,
0xff202040);
}
ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf);
video_output::set_mode_vga();
int ta = 0;
int core = 0;
mat4x4 trans = {
1, 0, 0, -1000,
0, 1, 0, -1000,
0, 0, 1, 1000,
0, 0, 0, 1,
};
do_get_condition();
while (1) {
maple::dma_wait_complete();
do_get_condition();
trans = update_analog(trans);
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, trans);
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);
while (render_done == 0) {
asm volatile ("nop");
};
while (spg_status::vsync(holly.SPG_STATUS));
while (!spg_status::vsync(holly.SPG_STATUS));
holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[ta].start;
}
}
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