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example: add modifier_volume_cube

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This commit is contained in:
Zack Buhman 2025-02-10 15:07:39 -06:00
parent 05d2ead439
commit be19abcdcf
12 changed files with 4640 additions and 20 deletions
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2
Makefile
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@ -4,7 +4,7 @@ include base.mk
include common.mk include common.mk
include headers.mk include headers.mk
OPT = -Og OPT = -O2
MAKEFILE_PATH := $(patsubst %/,%,$(dir $(abspath $(firstword $(MAKEFILE_LIST))))) MAKEFILE_PATH := $(patsubst %/,%,$(dir $(abspath $(firstword $(MAKEFILE_LIST)))))
CFLAGS += -I$(MAKEFILE_PATH) CFLAGS += -I$(MAKEFILE_PATH)
LIB ?= $(MAKEFILE_PATH) LIB ?= $(MAKEFILE_PATH)

14
example/example.mk
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@ -859,3 +859,17 @@ SPECK_OBJ = \
example/speck.elf: LDSCRIPT = $(LIB)/main.lds example/speck.elf: LDSCRIPT = $(LIB)/main.lds
example/speck.elf: $(START_OBJ) $(SPECK_OBJ) example/speck.elf: $(START_OBJ) $(SPECK_OBJ)
MODIFIER_VOLUME_CUBE_OBJ = \
example/modifier_volume_cube.o \
holly/core.o \
holly/region_array.o \
holly/background.o \
holly/ta_fifo_polygon_converter.o \
holly/video_output.o \
sh7091/serial.o \
font/terminus/ter_u32n.data.o \
$(LIBGCC)
example/modifier_volume_cube.elf: LDSCRIPT = $(LIB)/main.lds
example/modifier_volume_cube.elf: $(START_OBJ) $(MODIFIER_VOLUME_CUBE_OBJ)

912
example/modifier_volume_cube.cpp Normal file
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@ -0,0 +1,912 @@
#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/serial.hpp"
#include "systembus.hpp"
#include "systembus_bits.hpp"
#include "memorymap.hpp"
#include "model/model.h"
#include "model/cube.h"
#include "model/plane/model.h"
#include "font/terminus/ter_u32n.data.h"
#include "math/vec2.hpp"
#include "math/vec3.hpp"
#include "math/vec4.hpp"
#include "math/mat3x3.hpp"
#include "math/mat4x4.hpp"
#include "math/math.hpp"
#define assert(b) \
do { \
if (!(b)) { \
serial::string(__FILE__); \
serial::character(':'); \
serial::integer<uint32_t>(__LINE__, ' '); \
serial::string(__func__); \
serial::string(": assertion failed: "); \
serial::string(#b); \
serial::character('\n'); \
while (1); \
} \
} while (0);
using vec2 = vec<2, float>;
using vec3 = vec<3, float>;
using vec4 = vec<4, float>;
using mat3x3 = mat<3, 3, float>;
using mat4x4 = mat<4, 4, float>;
const float deg = 0.017453292519943295;
#define _fsrra(n) \
({ \
float v = (n); \
asm("fsrra %0" \
: "=f" (v) \
: "0" (v)); \
v; \
})
static inline int max(int a, int b)
{
return (a > b) ? a : b;
}
static inline int min(int a, int b)
{
return (a > b) ? b : a;
}
void global_polygon_type_0(ta_parameter_writer& writer, bool shadow)
{
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
| (shadow ? obj_control::shadow : 0)
;
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::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
);
}
void global_modifier_volume(ta_parameter_writer& writer)
{
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| para_control::list_type::opaque_modifier_volume
;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::volume_instruction::normal_polygon
| isp_tsp_instruction_word::culling_mode::no_culling;
writer.append<ta_global_parameter::modifier_volume>() =
ta_global_parameter::modifier_volume(parameter_control_word,
isp_tsp_instruction_word
);
}
void transfer_line(ta_parameter_writer& writer, vec3 p1, vec3 p2, uint32_t base_color)
{
/*
const uint32_t parameter_control_word = para_control::para_type::sprite
| para_control::list_type::opaque
| obj_control::col_type::packed_color;
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::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
;
const uint32_t texture_control_word = 0;
*/
float dy = p2.y - p1.y;
float dx = p2.x - p1.x;
float d = _fsrra(dx * dx + dy * dy) * 0.7f;
float dy1 = dy * d;
float dx1 = dx * d;
assert(p1.z < 1);
assert(p2.z < 1);
const vec3 v[4] = {
{ p1.x + dy1, p1.y + -dx1, p1.z },
{ p1.x + -dy1, p1.y + dx1, p1.z },
{ p2.x + -dy1, p2.y + dx1, p2.z },
{ p2.x + dy1, p2.y + -dx1, p2.z },
};
/*
writer.append<ta_global_parameter::sprite>() =
ta_global_parameter::sprite(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
texture_control_word,
base_color,
0, // offset_color
0, // data_size_for_sort_dma
0); // next_address_for_sort_dma
*/
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v[0].x, v[0].y, v[0].z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v[1].x, v[1].y, v[1].z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
v[3].x, v[3].y, v[3].z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
v[2].x, v[2].y, v[2].z,
base_color);
}
void transfer_glyph(ta_parameter_writer& writer, float x, float y, int c)
{
constexpr int width = 16;
constexpr int height = 32;
const uint32_t parameter_control_word = para_control::para_type::sprite
| para_control::list_type::punch_through
| obj_control::col_type::packed_color
| obj_control::texture;
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::src_alpha_instr::src_alpha
| tsp_instruction_word::dst_alpha_instr::inverse_src_alpha
| tsp_instruction_word::texture_u_size::from_int(width)
| tsp_instruction_word::texture_v_size::from_int(height);
const int ix = c - ' ';
const int offset = (width * height * ix) / 2;
const uint32_t texture_address = texture_memory_alloc.texture.start + offset;
const uint32_t texture_control_word = texture_control_word::pixel_format::_4bpp_palette
| texture_control_word::scan_order::twiddled
| texture_control_word::texture_address(texture_address / 8);
constexpr vec2 v[4] = {
{ 0.f, 0.f },
{ 1.f, 0.f },
{ 1.f, 1.f },
{ 0.f, 1.f },
};
constexpr uint32_t base_color = 0;
writer.append<ta_global_parameter::sprite>() =
ta_global_parameter::sprite(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
texture_control_word,
base_color,
0, // offset_color
0, // data_size_for_sort_dma
0); // next_address_for_sort_dma
writer.append<ta_vertex_parameter::sprite_type_1>() =
ta_vertex_parameter::sprite_type_1(para_control::para_type::vertex_parameter,
v[0].x * width + x,
v[0].y * height + y,
0.1f,
v[1].x * width + x,
v[1].y * height + y,
0.1f,
v[2].x * width + x,
v[2].y * height + y,
0.1f,
v[3].x * width + x,
v[3].y * height + y,
uv_16bit(v[0].x, v[0].y),
uv_16bit(v[1].x, v[1].y),
uv_16bit(v[2].x, v[2].y));
}
vec3 screen_transform(const mat4x4& screen, vec3 v)
{
v = screen * v;
float dim = 480 / 2.0 * 1.5;
return {
v.x / v.z * dim + 640 / 2.0f,
v.y / v.z * dim + 480 / 2.0f,
1 / v.z,
};
}
void render_basis(ta_parameter_writer& writer, const mat4x4& screen)
{
global_polygon_type_0(writer, false);
vec3 origin = screen_transform(screen, {0, 0, 0});
vec3 z = screen_transform(screen, {0, 0, 1});
vec3 y = screen_transform(screen, {0, 1, 0});
vec3 x = screen_transform(screen, {1, 0, 0});
uint32_t base_color = 0xffffff;
// magenta: Z
transfer_line(writer, origin, z, base_color);
// yellow: Y
transfer_line(writer, origin, y, base_color);
// cyan: X
transfer_line(writer, origin, x, base_color);
}
void render_basis_text(ta_parameter_writer& writer, const mat4x4& screen)
{
vec3 z = screen_transform(screen, (vec3){0, 0, 1} * 1.2f);
vec3 y = screen_transform(screen, (vec3){0, 1, 0} * 1.2f);
vec3 x = screen_transform(screen, (vec3){1, 0, 0} * 1.2f);
transfer_glyph(writer, z.x - 5, z.y - 10, 'z');
transfer_glyph(writer, y.x - 5, y.y - 10, 'y');
transfer_glyph(writer, x.x - 5, x.y - 10, 'x');
}
//#define LINE_DRAWING 1
static inline void render_quad(ta_parameter_writer& writer,
uint32_t base_color,
vec3 ap,
vec3 bp,
vec3 cp,
vec3 dp)
{
#ifdef LINE_DRAWING
transfer_line(writer, ap, bp, base_color);
transfer_line(writer, bp, cp, base_color);
transfer_line(writer, cp, dp, base_color);
transfer_line(writer, dp, ap, base_color);
#else
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,
base_color);
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,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
dp.x, dp.y, dp.z,
base_color);
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,
base_color);
#endif
}
static inline void render_tri(ta_parameter_writer& writer,
uint32_t base_color,
vec3 ap,
vec3 bp,
vec3 cp)
{
#ifdef LINE_DRAWING
transfer_line(writer, ap, bp, base_color);
transfer_line(writer, bp, cp, base_color);
transfer_line(writer, cp, ap, base_color);
#else
#endif
}
static inline void render_last_tri_mod(ta_parameter_writer& writer)
{
#ifdef LINE_DRAWING
#else
const uint32_t last_parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| para_control::list_type::opaque_modifier_volume
| obj_control::volume::modifier_volume::last_in_volume;
const uint32_t last_isp_tsp_instruction_word = isp_tsp_instruction_word::volume_instruction::inside_last_polygon
| isp_tsp_instruction_word::culling_mode::no_culling;
writer.append<ta_global_parameter::modifier_volume>() =
ta_global_parameter::modifier_volume(last_parameter_control_word,
last_isp_tsp_instruction_word);
#endif
}
static inline void render_tri_mod(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp)
{
#ifdef LINE_DRAWING
transfer_line(writer, ap, bp, base_color);
transfer_line(writer, bp, cp, base_color);
transfer_line(writer, cp, ap, base_color);
#else
writer.append<ta_vertex_parameter::modifier_volume>() =
ta_vertex_parameter::modifier_volume(modifier_volume_vertex_parameter_control_word(),
ap.x, ap.y, ap.z,
bp.x, bp.y, bp.z,
cp.x, cp.y, cp.z);
#endif
}
void set_edge_coloring(uint8_t * edge_coloring,
const int edge_stride,
bool l_dot_n_b, int a, int b)
{
int ma = min(a, b);
int mb = max(a, b);
int bit = 1 << ((int)l_dot_n_b);
edge_coloring[ma * edge_stride + mb] |= bit;
}
struct edge {
int a;
int b;
};
static uint32_t random;
uint32_t xorshift()
{
uint32_t x = random;
x ^= x << 13;
x ^= x >> 17;
x ^= x << 5;
return random = x;
}
static inline void render_extension_mesh(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
vec3 dp,
vec3 ep,
vec3 fp,
vec3 apo,
vec3 bpo,
vec3 cpo,
vec3 dpo,
vec3 epo,
vec3 fpo)
{
render_tri_mod(writer, ap, bp, apo);
render_tri_mod(writer, bpo, apo, bp);
render_tri_mod(writer, bp, cp, bpo);
render_tri_mod(writer, cpo, bpo, cp);
render_tri_mod(writer, cp, dp, cpo);
render_tri_mod(writer, dpo, cpo, dp);
render_tri_mod(writer, dp, ep, dpo);
render_tri_mod(writer, epo, dpo, ep);
render_tri_mod(writer, ep, fp, epo);
render_tri_mod(writer, fpo, epo, fp);
render_tri_mod(writer, fp, ap, fpo);
render_last_tri_mod(writer);
render_tri_mod(writer, apo, fpo, ap);
/*
random = 0x12345789;
render_quad(writer, xorshift(), ap, bp, bpo, apo);
render_quad(writer, xorshift(), bp, cp, cpo, bpo);
render_quad(writer, xorshift(), cp, dp, dpo, cpo);
render_quad(writer, xorshift(), dp, ep, epo, dpo);
render_quad(writer, xorshift(), ep, fp, fpo, epo);
render_quad(writer, xorshift(), fp, ap, apo, fpo);
*/
}
void render_silhouette(ta_parameter_writer& writer,
const mat4x4& screen,
const mat4x4& model,
const vec3 light_vec,
const uint8_t * edge_coloring,
const int edge_stride)
{
struct edge silhouette[6];
int ix = 0;
for (int a = 0; a < edge_stride; a++) {
for (int b = 0; b < edge_stride; b++) {
uint8_t coloring = edge_coloring[a * edge_stride + b];
if (coloring == 0b11) {
silhouette[ix++] = {a, b};
}
}
}
assert(ix == 6);
int last_ix = 0;
int order_ix = 0;
int order_vtx[6];
order_vtx[order_ix++] = silhouette[0].a;
// calculate vertex ordering
while (order_ix < 6) {
for (int i = 1; i < 6; i++) {
if (i == last_ix)
continue;
int last_vtx = order_vtx[order_ix - 1];
if (last_vtx == silhouette[i].a) {
last_ix = i;
order_vtx[order_ix++] = silhouette[i].b;
break;
}
if (last_vtx == silhouette[i].b) {
last_ix = i;
order_vtx[order_ix++] = silhouette[i].a;
break;
}
}
}
const vec3 * position = cube_position;
vec3 ap = screen_transform(screen, model * position[order_vtx[0]]);
vec3 bp = screen_transform(screen, model * position[order_vtx[1]]);
vec3 cp = screen_transform(screen, model * position[order_vtx[2]]);
vec3 dp = screen_transform(screen, model * position[order_vtx[3]]);
vec3 ep = screen_transform(screen, model * position[order_vtx[4]]);
vec3 fp = screen_transform(screen, model * position[order_vtx[5]]);
float scale = 5;
mat4x4 translate = {
1, 0, 0, -light_vec.x * scale,
0, 1, 0, -light_vec.y * scale,
0, 0, 1, -light_vec.z * scale,
0, 0, 0, 1,
};
mat4x4 model2 = model * translate;
vec3 apo = screen_transform(screen, model2 * position[order_vtx[0]]);
vec3 bpo = screen_transform(screen, model2 * position[order_vtx[1]]);
vec3 cpo = screen_transform(screen, model2 * position[order_vtx[2]]);
vec3 dpo = screen_transform(screen, model2 * position[order_vtx[3]]);
vec3 epo = screen_transform(screen, model2 * position[order_vtx[4]]);
vec3 fpo = screen_transform(screen, model2 * position[order_vtx[5]]);
if (0) { // perimeter
uint32_t base_color = 0xff0080;
transfer_line(writer, ap, bp, base_color);
transfer_line(writer, bp, cp, base_color);
transfer_line(writer, cp, dp, base_color);
transfer_line(writer, dp, ep, base_color);
transfer_line(writer, ep, fp, base_color);
transfer_line(writer, fp, ap, base_color);
}
if (1) { // near end cap
render_tri_mod(writer, ap, bp, cp);
render_tri_mod(writer, cp, dp, ep);
render_tri_mod(writer, ep, fp, ap);
render_tri_mod(writer, ap, cp, ep);
}
if (1) { // far end cap
render_tri_mod(writer, apo, bpo, cpo);
render_tri_mod(writer, cpo, dpo, epo);
render_tri_mod(writer, epo, fpo, apo);
render_tri_mod(writer, apo, cpo, epo);
}
if (1) {
render_extension_mesh(writer,
ap,
bp,
cp,
dp,
ep,
fp,
apo,
bpo,
cpo,
dpo,
epo,
fpo);
}
}
void render_cube(ta_parameter_writer& writer,
const mat4x4& screen,
const mat4x4& model,
const vec3 light_vec)
{
const vec3 * normal = cube_normal;
const vec3 * position = cube_position;
const union quadrilateral * quadrilateral = cube_Cube_quadrilateral;
const int edge_stride = 8;
const int edge_coloring_length = edge_stride * edge_stride;
uint8_t __attribute__((aligned(4))) edge_coloring[edge_coloring_length];
for (int i = 0; i < edge_coloring_length / 4; i++)
reinterpret_cast<uint32_t *>(edge_coloring)[i] = 0;
global_polygon_type_0(writer, false); // no self-shadow
for (int i = 0; i < 6; i++) {
const union quadrilateral& q = quadrilateral[i];
vec3 n3 = normal[q.a.normal];
vec4 n4 = model * (vec4){n3.x, n3.y, n3.z, 0.f}; // no translation component
vec3 n = {n4.x, n4.y, n4.z};
float l_dot_n = dot(light_vec, n);
bool l_dot_n_b = l_dot_n > 0;
set_edge_coloring(edge_coloring, edge_stride, l_dot_n_b, q.a.position, q.b.position);
set_edge_coloring(edge_coloring, edge_stride, l_dot_n_b, q.b.position, q.c.position);
set_edge_coloring(edge_coloring, edge_stride, l_dot_n_b, q.c.position, q.d.position);
set_edge_coloring(edge_coloring, edge_stride, l_dot_n_b, q.d.position, q.a.position);
vec3 ap = model * position[q.a.position];
vec3 bp = model * position[q.b.position];
vec3 cp = model * position[q.c.position];
vec3 dp = model * position[q.d.position];
uint32_t base_color = l_dot_n_b ? 0xff8000 : 0x0080ff;
vec3 sap = screen_transform(screen, ap);
vec3 sbp = screen_transform(screen, bp);
vec3 scp = screen_transform(screen, cp);
vec3 sdp = screen_transform(screen, dp);
render_quad(writer,
base_color,
sap,
sbp,
scp,
sdp);
}
if (1) {
// end of opaque list
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
global_modifier_volume(writer);
render_silhouette(writer,
screen,
model,
light_vec,
edge_coloring,
edge_stride);
}
}
void render_plane(ta_parameter_writer& writer,
const mat4x4& screen,
const vec3 light_vec)
{
//const vec3 * normal = plane_normal;
const vec3 * position = plane_position;
const union quadrilateral * quadrilateral = plane_Plane.quadrilateral;
int count = plane_Plane.quadrilateral_count;
float scale = 3;
const mat4x4 model = {
scale, 0, 0, 0,
0, scale, 0, 0,
0, 0, scale, 1,
0, 0, 0, 1,
};
global_polygon_type_0(writer, true); // with shadow
for (int i = 0; i < count; i++) {
const union quadrilateral& q = quadrilateral[i];
vec3 ap = model * position[q.a.position];
vec3 bp = model * position[q.b.position];
vec3 cp = model * position[q.c.position];
vec3 dp = model * position[q.d.position];
uint32_t base_color = 0xffff80;
vec3 sap = screen_transform(screen, ap);
vec3 sbp = screen_transform(screen, bp);
vec3 scp = screen_transform(screen, cp);
vec3 sdp = screen_transform(screen, dp);
render_quad(writer,
base_color,
sap,
sbp,
scp,
sdp);
}
}
constexpr inline mat4x4 screen_rotation()
{
float zt = -0.7853981633974483 / 1.5;
float xt = -0.7853981633974483 * 1;
mat4x4 rx = {
1, 0, 0, 0,
0, cos(xt), -sin(xt), 0,
0, sin(xt), cos(xt), 0,
0, 0, 0, 1,
};
mat4x4 rz = {
cos(zt), -sin(zt), 0, 0,
sin(zt), cos(zt), 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
};
mat4x4 t = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 2.5,
0, 0, 0, 1,
};
return t * rx * rz;
}
void render_light_vec(ta_parameter_writer& writer, const mat4x4& screen, vec3 l)
{
vec3 a = screen_transform(screen, {0, 0, 0});
vec3 b = screen_transform(screen, l * 0.5f);
transfer_line(writer, a, b, 0x00ff00);
}
void transfer_scene(ta_parameter_writer& writer, const mat4x4& screen, vec3 light_vec)
{
// opaque
render_basis(writer, screen);
render_light_vec(writer, screen, light_vec);
if (1) {
render_plane(writer,
screen,
light_vec);
}
const mat4x4 model = mat4x4() * 0.3f;
render_cube(writer,
screen,
model,
light_vec);
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
// punch_through
/*
render_basis_text(writer, screen);
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
*/
}
vec3 update_light()
{
static float ltheta = 2;
vec3 light_origin = {0, 0, 0};
vec3 light_pos = {1, 1, 2};
mat3x3 rot = {
cos(ltheta), -sin(ltheta), 0,
sin(ltheta), cos(ltheta), 0,
0, 0, 1,
};
light_pos = rot * light_pos;
ltheta += deg / 8;
vec3 light_vec = light_origin - light_pos;
return light_vec;
}
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
uint32_t offset = texture_memory_alloc.texture.start;
void * dst = reinterpret_cast<void *>(&ta_fifo_texture_memory[offset / 4]);
void * src = reinterpret_cast<void *>(&_binary_font_terminus_ter_u32n_data_start);
uint32_t size = reinterpret_cast<uint32_t>(&_binary_font_terminus_ter_u32n_data_size);
transfer_ta_fifo_texture_memory_32byte(dst, src, size);
}
static inline uint16_t argb1555(int a, int r, int g, int b)
{
return ((a & 1) << 15) | ((r & 31) << 10) | ((g & 31) << 5) | ((b & 31) << 0);
}
void transfer_palette()
{
holly.PAL_RAM_CTRL = pal_ram_ctrl::pixel_format::argb1555;
holly.PALETTE_RAM[ 0 + 0] = argb1555(0, 0, 0, 0);
holly.PALETTE_RAM[ 0 + 1] = argb1555(1, 31, 31, 31);
}
uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
void main()
{
serial::init(0);
transfer_textures();
transfer_palette();
constexpr uint32_t ta_alloc = 0
//ta_alloc_ctrl::pt_opb::_16x4byte
| ta_alloc_ctrl::tm_opb::no_list
| ta_alloc_ctrl::t_opb::no_list
| ta_alloc_ctrl::om_opb::_16x4byte
| ta_alloc_ctrl::o_opb::_16x4byte;
constexpr int render_passes = 1;
constexpr struct opb_size opb_size[render_passes] = {
{
.opaque = 16 * 4,
.opaque_modifier = 16 * 4,
.translucent = 0,
.translucent_modifier = 0,
//.punch_through = 16 * 4
}
};
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::intensity_volume_mode;
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;
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);
}
ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf);
int ta = 0;
int core = 0;
const float degree = 0.017453292519943295 / 5;
float theta = 0;
const mat4x4 screen = screen_rotation();
while (1) {
vec3 light_vec = update_light();
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, screen, light_vec);
ta_polygon_converter_writeback(writer.buf, writer.offset);
ta_polygon_converter_transfer(writer.buf, writer.offset);
ta_wait_opaque_modifier_volume_list();
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_wait_end_of_render_video();
holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[ta].start;
theta += degree;
}
}

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font/terminus/ter_u32n.data Normal file
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15
font/terminus/ter_u32n.data.h Normal file
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@ -0,0 +1,15 @@
#pragma once
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t _binary_font_terminus_ter_u32n_data_start __asm("_binary_font_terminus_ter_u32n_data_start");
extern uint32_t _binary_font_terminus_ter_u32n_data_end __asm("_binary_font_terminus_ter_u32n_data_end");
extern uint32_t _binary_font_terminus_ter_u32n_data_size __asm("_binary_font_terminus_ter_u32n_data_size");
#ifdef __cplusplus
}
#endif

41
math/mat4x4.hpp
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@ -80,6 +80,18 @@ mat<4, 4, T>::operator[](int i) const
} }
} }
template<typename T>
inline constexpr mat<4, 4, T> operator+(mat<4, 4, T> const& m1, mat<4, 4, T> const& m2)
{
#define c(i, j) ( m1[i][j] + m2[i][j] )
return mat<4, 4, T>(c(0,0), c(0,1), c(0,2), c(0,3),
c(1,0), c(1,1), c(1,2), c(1,3),
c(2,0), c(2,1), c(2,2), c(2,3),
c(3,0), c(3,1), c(3,2), c(3,3));
#undef c
}
template<typename T> template<typename T>
inline constexpr mat<4, 4, T> operator*(mat<4, 4, T> const& m1, mat<4, 4, T> const& m2) inline constexpr mat<4, 4, T> operator*(mat<4, 4, T> const& m1, mat<4, 4, T> const& m2)
{ {
@ -96,6 +108,18 @@ inline constexpr mat<4, 4, T> operator*(mat<4, 4, T> const& m1, mat<4, 4, T> con
#undef c #undef c
} }
template<typename T>
inline constexpr mat<4, 4, T> operator*(mat<4, 4, T> const& m1, float s)
{
#define c(i, j) ( m1[i][j] * s )
return mat<4, 4, T>(c(0,0), c(0,1), c(0,2), c(0,3),
c(1,0), c(1,1), c(1,2), c(1,3),
c(2,0), c(2,1), c(2,2), c(2,3),
c(3,0), c(3,1), c(3,2), c(3,3));
#undef c
}
template<typename T> template<typename T>
inline constexpr typename mat<4, 4, T>::row_type operator* inline constexpr typename mat<4, 4, T>::row_type operator*
( (
@ -113,6 +137,23 @@ inline constexpr typename mat<4, 4, T>::row_type operator*
#undef c #undef c
} }
template<typename T>
inline constexpr vec<3, T> operator*
(
mat<4, 4, T> const& m,
vec<3, T> const& v
)
{
#define c(i) ( \
m[i][0] * v[0] \
+ m[i][1] * v[1] \
+ m[i][2] * v[2] \
+ m[i][3] )
return vec<3, T>(c(0), c(1), c(2));
#undef c
}
template<typename T> template<typename T>
inline constexpr mat<4, 4, T> transpose(mat<4, 4, T> const& m) inline constexpr mat<4, 4, T> transpose(mat<4, 4, T> const& m)
{ {

104
model/cube/model.h Normal file
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@ -0,0 +1,104 @@
#pragma once
#include <stddef.h>
#include "model.h"
// floating-point
const vertex_position cube_position[] = {
{1.0, 1.0, -1.0},
{1.0, -1.0, -1.0},
{1.0, 1.0, 1.0},
{1.0, -1.0, 1.0},
{-1.0, 1.0, -1.0},
{-1.0, -1.0, -1.0},
{-1.0, 1.0, 1.0},
{-1.0, -1.0, 1.0},
};
// floating-point
const vertex_texture cube_texture[] = {
{0.625, 0.5},
{0.875, 0.5},
{0.875, 0.75},
{0.625, 0.75},
{0.375, 0.75},
{0.625, 1.0},
{0.375, 1.0},
{0.375, 0.0},
{0.625, 0.0},
{0.625, 0.25},
{0.375, 0.25},
{0.125, 0.5},
{0.375, 0.5},
{0.125, 0.75},
};
// floating-point
const vertex_normal cube_normal[] = {
{0.0, 1.0, 0.0},
{0.0, 0.0, 1.0},
{-1.0, 0.0, 0.0},
{0.0, -1.0, 0.0},
{1.0, 0.0, 0.0},
{0.0, 0.0, -1.0},
};
const union quadrilateral cube_Cube_quadrilateral[] = {
{ .v = {
{0, 0, 0},
{4, 1, 0},
{6, 2, 0},
{2, 3, 0},
}},
{ .v = {
{3, 4, 1},
{2, 3, 1},
{6, 5, 1},
{7, 6, 1},
}},
{ .v = {
{7, 7, 2},
{6, 8, 2},
{4, 9, 2},
{5, 10, 2},
}},
{ .v = {
{5, 11, 3},
{1, 12, 3},
{3, 4, 3},
{7, 13, 3},
}},
{ .v = {
{1, 12, 4},
{0, 0, 4},
{2, 3, 4},
{3, 4, 4},
}},
{ .v = {
{5, 10, 5},
{4, 9, 5},
{0, 0, 5},
{1, 12, 5},
}},
};
const struct object cube_Cube = {
.triangle = NULL,
.quadrilateral = &cube_Cube_quadrilateral[0],
.triangle_count = 0,
.quadrilateral_count = 6,
.material = -1,
};
const struct object * cube_object_list[] = {
&cube_Cube,
};
const struct model cube_model = {
.position = &cube_position[0],
.texture = &cube_texture[0],
.normal = &cube_normal[0],
.object = &cube_object_list[0],
.object_count = 1,
};

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model/plane/plane.mtl Normal file
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@ -0,0 +1,2 @@
# Blender 4.3.2 MTL File: 'plane.blend'
# www.blender.org

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model/plane/plane.obj Normal file
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64
tools/ttf_bitmap.cpp
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@ -7,6 +7,23 @@
#include <ft2build.h> #include <ft2build.h>
#include FT_FREETYPE_H #include FT_FREETYPE_H
#include "../twiddle.hpp"
bool is_power(int n)
{
const int min_power = 8;
const int max_power = 1024;
int power = min_power;
while (power <= max_power) {
if (n == power)
return true;
power *= 2;
}
printf("%d\n", n);
return false;
}
int32_t int32_t
load_bitmap_char(FT_Face face, load_bitmap_char(FT_Face face,
FT_ULong char_code, FT_ULong char_code,
@ -25,26 +42,24 @@ load_bitmap_char(FT_Face face,
//printf("num_grays %d\n", face->glyph->bitmap.num_grays); //printf("num_grays %d\n", face->glyph->bitmap.num_grays);
//printf("pitch %d\n", face->glyph->bitmap.pitch); //printf("pitch %d\n", face->glyph->bitmap.pitch);
//printf("width %d\n", face->glyph->bitmap.width); //printf("width %d\n", face->glyph->bitmap.width);
//printf("char_code %lx rows %d\n", char_code, face->glyph->bitmap.rows); //printf("rows %d\n", face->glyph->bitmap.rows);
//assert((face->glyph->bitmap.rows % 8) == 0); assert(face->glyph->bitmap.num_grays == 2);
//assert(face->glyph->bitmap.width / face->glyph->bitmap.pitch == 8); assert(is_power(face->glyph->bitmap.rows));
assert(is_power(face->glyph->bitmap.width));
assert((int)(face->glyph->bitmap.pitch * 8) == (int)(face->glyph->bitmap.width));
for (int y = 0; y < (int)face->glyph->bitmap.rows; y++) { for (int y = 0; y < (int)face->glyph->bitmap.rows; y++) {
uint8_t * row = &face->glyph->bitmap.buffer[y * face->glyph->bitmap.pitch]; uint8_t * row = &face->glyph->bitmap.buffer[y * face->glyph->bitmap.pitch];
uint8_t row_out = 0; for (int x = 0; x < (int)face->glyph->bitmap.width; x += 1) {
for (unsigned int x = 0; x < face->glyph->bitmap.width; x++) { const int bit = (row[x / 8] >> (7 - (x % 8))) & 1;
if (x % 8 == 0) row_out = 0; //std::cerr << (bit ? "█" : " ");
const uint8_t bit = (row[x / 8] >> (7 - (x % 8))) & 1; buf[y * face->glyph->bitmap.width + x] = bit;
std::cerr << (bit ? "█" : " ");
row_out |= (bit << (x % 8));
if (x % 8 == 7 || x == (face->glyph->bitmap.width - 1))
buf[(y * face->glyph->bitmap.pitch) + (x / 8)] = row_out;
} }
std::cerr << "|\n"; //std::cerr << "|\n";
} }
// 'pitch' is bytes; 'width' is pixels // 'pitch' is bytes; 'width' is pixels
return face->glyph->bitmap.rows * face->glyph->bitmap.pitch; return face->glyph->bitmap.rows * face->glyph->bitmap.width;
} }
template <typename T> template <typename T>
@ -95,11 +110,16 @@ int main(int argc, char *argv[])
assert(end > start); assert(end > start);
uint32_t pixels_per_glyph = (face->size->metrics.height * face->size->metrics.max_advance); int width = face->size->metrics.max_advance >> 6;
int height = face->size->metrics.height >> 6;
uint32_t pixels_per_glyph = width * height;
assert(pixels_per_glyph % 8 == 0); assert(pixels_per_glyph % 8 == 0);
uint32_t bytes_per_glyph = pixels_per_glyph / 8; uint32_t bytes_per_glyph = pixels_per_glyph;
uint32_t num_glyphs = (end - start) + 1; uint32_t num_glyphs = (end - start) + 1;
uint8_t buf[bytes_per_glyph * num_glyphs]; uint32_t buf_size = bytes_per_glyph * num_glyphs;
uint8_t * buf = (uint8_t *)malloc(buf_size);
uint8_t * twiddle_buf = (uint8_t *)malloc(buf_size / 2);
uint32_t bitmap_offset = 0; uint32_t bitmap_offset = 0;
for (uint32_t char_code = start; char_code <= end; char_code++) { for (uint32_t char_code = start; char_code <= end; char_code++) {
@ -111,16 +131,22 @@ int main(int argc, char *argv[])
return -1; return -1;
} }
printf("twiddle %d %d %d %d\n", bitmap_offset, bitmap_offset / 2, width, height);
twiddle::texture_4bpp(&twiddle_buf[bitmap_offset / 2],
&buf[bitmap_offset],
width,
height);
bitmap_offset += bitmap_size; bitmap_offset += bitmap_size;
assert(bitmap_offset < (sizeof (buf))); assert(bitmap_offset <= buf_size);
} }
std::cerr << "bitmap_offset: 0x" << std::dec << bitmap_offset << '\n'; printf("bitmap_offset: %d\n", bitmap_offset);
FILE * out = fopen(output_file_path, "w"); FILE * out = fopen(output_file_path, "w");
if (out == NULL) { if (out == NULL) {
perror("fopen(w)"); perror("fopen(w)");
return -1; return -1;
} }
fwrite(reinterpret_cast<void*>(&buf), bitmap_offset, 1, out); fwrite(reinterpret_cast<void*>(twiddle_buf), bitmap_offset / 2, 1, out);
fclose(out); fclose(out);
} }