example: add boids

This commit is contained in:
Zack Buhman 2025-04-11 14:25:09 -05:00
parent 6d8b7f282e
commit dbe39596bd

506
example/boids.cpp Normal file
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#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>;
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\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);
}
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\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);
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));
}
struct boid
{
vec3 position;
vec3 velocity;
};
struct boid boids[50];
const int boids_length = (sizeof (boids)) / (sizeof (boids[0]));
void boid_initialize_positions()
{
for (int i = 0; i < boids_length; i++) {
boids[i].velocity = {0, 0, 0};
}
boids[0].position = {240, 240, 0.1};
boids[1].position = {-20, 640, 0.1};
boids[2].position = {100, -20, 0.1};
boids[3].position = {-20, -20, 0.1};
boids[4].position = {900, 600, 0.1};
for (int i = 5; i < boids_length; i ++ ){
boids[i].position = {0, 0, 0.1};
}
}
vec3 rule1(struct boid * boid)
{
vec3 center = {0, 0, 0};
for (int i = 0; i < boids_length; i++) {
if (&boids[i] == boid)
continue;
center = center + boids[i].position;
}
center = center / (float)(boids_length - 1);
return (center - boid->position) / 100.f;
}
vec3 rule2(struct boid * boid)
{
vec3 c = {0, 0, 0};
for (int i = 0; i < boids_length; i++) {
if (&boids[i] == boid)
continue;
if (magnitude(boids[i].position - boid->position) < 20.f) {
c = c - (boids[i].position - boid->position);
}
}
return c;
}
vec3 rule3(struct boid * boid)
{
vec3 pv = {0, 0, 0};
for (int i = 0; i < boids_length; i++) {
if (&boids[i] == boid)
continue;
pv = pv + boids[i].velocity;
}
pv = pv / (float)(boids_length - 1);
return (pv - boid->velocity) / 10.0f;
}
vec3 bound_position(struct boid * b)
{
float xmin = 0;
float xmax = 640;
float ymin = 0;
float ymax = 480;
float zmin = 0.1;
float zmax = 0.2;
vec3 v;
if (b->position.x < xmin)
v.x = 5;
if (b->position.x > xmax)
v.x = -5;
if (b->position.y < ymin)
v.y = 5;
if (b->position.y > ymax)
v.y = -5;
/*
if (b->position.z < zmin)
v.z = 0.01;
if (b->position.z > zmax)
v.z = -0.01;
*/
return v;
}
void limit_velocity(struct boid * boid)
{
float limit = 8;
vec3 v;
if (magnitude(boid->velocity) > limit) {
boid->velocity = (boid->velocity / magnitude(boid->velocity)) * limit;
}
}
void update_boids()
{
for (int i = 0; i < boids_length; i++) {
struct boid * b = &boids[i];
vec3 v1 = rule1(b);
vec3 v2 = rule2(b);
vec3 v3 = rule3(b);
vec3 v4 = bound_position(b);
b->velocity = b->velocity + v1 + v2 + v3 + v4;
limit_velocity(b);
b->velocity.z = 0;
b->position = b->position + b->velocity;
}
}
void global_polygon_type_0(ta_parameter_writer& writer,
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
| obj_control::gouraud
;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| cull;
const uint32_t tsp_instruction_word = 0
| tsp_instruction_word::fog_control::no_fog
| tsp_instruction_word::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
;
const uint32_t texture_control_word = 0;
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
);
}
static inline void render_tri_type_0(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
uint32_t ac,
uint32_t bc,
uint32_t cc)
{
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,
ac);
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,
bc);
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,
cc);
}
void dvec(const char * s, vec3 v)
{
serial::string(s);
serial::character(' ');
serial::integer<uint32_t>(v.x, ' ');
serial::integer<uint32_t>(v.y, ' ');
serial::integer<uint32_t>(v.z);
}
void render_boid(ta_parameter_writer& writer, struct boid * boid)
{
const float size = 15.f;
float mag = magnitude(boid->velocity);
vec3 normal;
if (mag == 0)
normal = {1, 0, 0};
else
normal = boid->velocity / mag;
vec3 perp = {-normal.y, normal.x, normal.z};
vec3 a = boid->position + normal * size;
vec3 b = boid->position - normal * size * 0.5f + perp * size * 0.5f;
vec3 c = boid->position - normal * size * 0.5f - perp * size * 0.5f;
/*
dvec("n", normal);
dvec("a", a);
dvec("b", b);
dvec("c", c);
dvec("p", boid->position);
*/
render_tri_type_0(writer, a, b, c, 0xff00ff00, 0xff808000, 0xff808000);
}
void transfer_scene(ta_parameter_writer& writer)
{
global_polygon_type_0(writer,
para_control::list_type::opaque,
isp_tsp_instruction_word::culling_mode::no_culling);
for (int i = 0; i < boids_length; i++) {
render_boid(writer, &boids[i]);
}
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
}
void texture_init()
{
volatile uint32_t * base = &texture_memory64[texture_memory_alloc.texture.start / 4];
for (int i = 0; i < 8 * 8 / 2; i++) {
base[i] = 0xffffffff;
}
}
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();
texture_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();
boid_initialize_positions();
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);
update_boids();
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);
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));
}
}