mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-06-16 00:52:22 -07:00
381 lines
12 KiB
C
381 lines
12 KiB
C
#include "stdio.h"
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#include <stdlib.h>
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#include "assert.h"
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// #include "libgpu.h"
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// #include "libetc.h"
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// #include "libgte.h"
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#include "duffle/dsl.h"
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#include "duffle/memory.h"
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#include "duffle/math.h"
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#include "duffle/gcc_asm.h"
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#include "duffle/mips.h"
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#include "duffle/gp.h"
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#include "duffle/gte.h"
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#include "duffle/lottes_tape.h"
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#include "hello_gte.h"
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enum {
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PrimitiveBuff_Len = 4096,
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OrderingTbl_Len = 2048
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};
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typedef U4 OrderingTable_Buffer[OrderingTbl_Len];
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typedef Array_(OrderingTable_Buffer, 2);
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typedef B1 PrimitiveBuffer[PrimitiveBuff_Len];
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typedef Array_(PrimitiveBuffer, 2);
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typedef Struct_(PrimitiveArena) {
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A2_PrimitiveBuffer buf;
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U4 used;
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};
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#define Cube_num_verts 8
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typedef Array_(V3_S2, Cube_num_verts);
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#define Cube_num_faces 6
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typedef Array_(V4_S2, Cube_num_faces);
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I_ void ent_cube128_init(A8_V3_S2* verts, A6_V4_S2* faces) {
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LP_ A8_V3_S2 baked_verts = (A8_V3_S2) {
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{ -128, -128, -128 },
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{ 128, -128, -128 },
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{ 128, -128, 128 },
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{ -128, -128, 128 },
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{ -128, 128, -128 },
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{ 128, 128, -128 },
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{ 128, 128, 128 },
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{ -128, 128, 128 }
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};
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LP_ A6_V4_S2 baked_faces = (A6_V4_S2) {
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{ 3, 2, 0, 1 },
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{ 0, 1, 4, 5 },
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{ 4, 5, 7, 6 },
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{ 1, 2, 5, 6 },
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{ 2, 3, 6, 7 },
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{ 3, 0, 7, 4 },
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};
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mem_copy(u4_(verts), u4_(& baked_verts), S_(A8_V3_S2) );
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mem_copy(u4_(faces), u4_(& baked_faces), S_(A6_V4_S2) );
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return;
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}
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typedef Struct_(Ent_Cube) {
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V3_S4 accel;
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V3_S4 vel;
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V3_S4 pos;
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V3_S4 scale;
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V3_S2 rot;
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A8_V3_S2 verts;
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A6_V4_S2 faces;
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};
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#define Floor_num_verts 4
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typedef Array_(V3_S2, Floor_num_verts);
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#define Floor_num_faces 2
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typedef Array_(V3_S2, Floor_num_faces);
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I_ void ent_floor_init(A4_V3_S2* verts, A2_V3_S2* faces) {
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LP_ A4_V3_S2 baked_verts = (A4_V3_S2) {
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{ -900, 0, -900 },
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{ -900, 0, 900 },
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{ 900, 0, -900 },
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{ 900, 0, 900 },
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};
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LP_ A2_V3_S2 baked_faces = (A2_V3_S2) {
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{ 0, 1, 2 },
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{ 1, 3, 2 },
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};
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mem_copy(u4_(verts), u4_(& baked_verts), S_(A4_V3_S2));
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mem_copy(u4_(faces), u4_(& baked_faces), S_(A2_V3_S2));
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};
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typedef Struct_(Ent_Floor) {
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V3_S4 accel;
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V3_S4 pos;
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V3_S4 scale;
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V3_S2 rot;
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A4_V3_S2 verts;
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A2_V3_S2 faces;
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};
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typedef Struct_(SMemory) {
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DoubleBuffer screen_buf;
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A2_OrderingTable_Buffer ordering_tbl;
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PrimitiveArena primitives;
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S4 active_buf_id;
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M3_S2 tform_world;
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Ent_Cube cube;
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Ent_Floor floor;
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};
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global SMemory static_mem;
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extern SMemory static_mem;
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I_ B1* prim__alloc(U4 type_width, Str8 type_name) {
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gknown PrimitiveArena* pa = & static_mem.primitives;
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gknown B1* buf = (B1*) r_(static_mem.primitives.buf)[static_mem.active_buf_id];
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assert(pa->used + type_width < PrimitiveBuff_Len);
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B1* next = buf + pa->used;
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pa->used += type_width;
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return next;
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}
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#define prim_alloc(type) (type*)prim__alloc(S_(type), slit( stringify(type)))
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void gp_screen_init_c11(DoubleBuffer* screen_buf, S4* active_buf_id)
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{
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reset_graph(0);
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// Set the current initial buffer
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active_buf_id[0] = 0;
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// Just setting env data, not interacting with console hw.
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// First buffer area
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displayenv_init(& r_(screen_buf->display)[0], 0, 0, ScreenRes_X, ScreenRes_Y);
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drawenv_init (& r_(screen_buf->draw )[0], 0, ScreenRes_Y, ScreenRes_X, ScreenRes_Y);
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// Second buffer area
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displayenv_init(& r_(screen_buf->display)[1], 0, ScreenRes_Y, ScreenRes_X, ScreenRes_Y);
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drawenv_init (& r_(screen_buf->draw )[1], 0, 0, ScreenRes_X, ScreenRes_Y);
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// Set the back/drawing buffer
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screen_buf->draw[0].enable_auto_clear = true;
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screen_buf->draw[1].enable_auto_clear = true;
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// Set the background clear color
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screen_buf->draw[0].initial_bg_color = rgb8( .r = 7, .g = 7, .b = 7 );
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screen_buf->draw[1].initial_bg_color = rgb8( .r = 7, .g = 7, .b = 7 );
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// screen_buf->draw[1].initial_bg_color = rgb8( .r = 47, .g = 13, .b = 0 );
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displayenv_put(& r_(screen_buf->display)[ active_buf_id[0] ]);
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drawenv_put (& r_(screen_buf->draw )[ active_buf_id[0] ]);
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// Initialize and setup the GTE geometry offsets
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geom_init();
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geom_set_offset(ScreenRes_CenterX, ScreenRes_CenterY);
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geom_set_screen(ScreenZ);
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set_display_enabled(1); // gp_DisplayEnabled
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}
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void gp_display_frame(DoubleBuffer* screen_buf, S4* active_buf_id, U4* ordering_buf, PrimitiveArena* pa) {
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draw_sync(0);
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vsync(0);
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displayenv_put(& r_(screen_buf->display)[active_buf_id[0] ]);
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drawenv_put (& r_(screen_buf->draw) [active_buf_id[0] ]);
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{
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draw_orderingtbl(ordering_buf + OrderingTbl_Len - 1);
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pa->used = 0;
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}
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active_buf_id[0] = ! active_buf_id[0]; // Swap current buffer
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}
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void render(void) {
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}
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void update(PrimitiveArena* pa, U4* ordering_buf)
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{
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orderingtbl_clear_reverse(ordering_buf, OrderingTbl_Len);
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// Update the position based on acceleration and velocity
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gknown V3_S4_R pos = & static_mem.cube.pos;
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gknown V3_S4_R vel = & static_mem.cube.vel;
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gknown V3_S4_R acc = & static_mem.cube.accel;
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add_v3s4(vel, acc[0]);
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add_v3s4_fp(pos, vel[0]);
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// vel->x += acc->x;
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// vel->y += acc->y;
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// vel->z += acc->z;
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// pos->x += vel->x;
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// pos->y += vel->y;
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// pos->z += vel->z;
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if (pos->y + 150 > static_mem.floor.pos.y) vel->y *= -1;
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// Prep
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S4 nclip = 0;
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S4 orderingtbl_z = 0;
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A2_S2 p; //???
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S4 flag; //????
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// Draw Cube
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if (1)
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{
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m3s2_rotation (& static_mem.cube.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.cube.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.cube.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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for (U4 face_id = 0; face_id < Cube_num_faces; face_id += 1)
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{
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Poly_G4* quad = prim_alloc(Poly_G4); set_poly_g4(quad);
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quad->c0 = rgb8(255, 0, 255);
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quad->c1 = rgb8(255, 255, 0);
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quad->c2 = rgb8( 0, 255, 255);
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quad->c3 = rgb8( 0, 255, 0);
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V4_S2* face = & static_mem.cube.faces[face_id];
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V3_S2* p0 = & static_mem.cube.verts[face->x];
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V3_S2* p1 = & static_mem.cube.verts[face->y];
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V3_S2* p2 = & static_mem.cube.verts[face->z];
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V3_S2* p3 = & static_mem.cube.verts[face->w];
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nclip = rtp_avg_nclip_a4_v3s2(
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p0, p1, p2, p3,
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& quad->p0, & quad->p1, & quad->p2, & quad->p3,
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& p, & orderingtbl_z, & flag
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);
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if (nclip <= 0) {
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continue;
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}
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if ((orderingtbl_z > 0) && (orderingtbl_z < OrderingTbl_Len)) {
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orderingtbl_add_primitive(ordering_buf[orderingtbl_z], quad);
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}
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}
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// static_mem.cube.rot.x += 6;
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// static_mem.cube.rot.y += 8;
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// static_mem.cube.rot.z += 12;
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static_mem.cube.rot.y += 30;
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}
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// Draw Floor
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if (0)
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{
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m3s2_rotation (& static_mem.floor.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.floor.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.floor.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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for (U4 face_id = 0; face_id < Floor_num_faces; face_id += 1)
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{
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Poly_F3* tri = prim_alloc(Poly_F3); set_poly_f3(tri);
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tri->color = rgb8(255, 255, 255);
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V3_S2* face = & static_mem.floor.faces[face_id];
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register V3_S2* p0 rgcc(R_T4) = & static_mem.floor.verts[face->x];
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register V3_S2* p1 rgcc(R_T5) = & static_mem.floor.verts[face->y];
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register V3_S2* p2 rgcc(R_T6) = & static_mem.floor.verts[face->z];
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// Three independent bases — full register discretion at the call site
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gte_load_v0(p0, R_T4);
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/*
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asm volatile( ".word " "%0" ", %1" : :
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"i"(((op_lwc2 & OPCODE_MASK) << OPCODE_SHIFT) | ((R_T4 & REG_MASK) << RS_SHIFT) | ((gte_in_v0_xy & REG_MASK) << RT_SHIFT) | (0 & IMM_MASK)),
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"i"(((op_lwc2 & OPCODE_MASK) << OPCODE_SHIFT) | ((R_T4 & REG_MASK) << RS_SHIFT) | ((gte_in_v0_z & REG_MASK) << RT_SHIFT) | (GTE_Z_Offset & IMM_MASK)),
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"r"(p0) :
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"$2", "$8", "$9", "$31", "memory"
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);
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*/
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gte_load_v1(p1, R_T5);
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gte_load_v2(p2, R_T6);
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gte_rtpt();
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gte_nclip();
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gte_stotz(& nclip);
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// nclip = rtp_avg_nclip_a3_v3s2(p0, p1, p2
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// , & tri->p0, & tri->p1, & tri->p2
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// , & p, & orderingtbl_z, & flag
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// );
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// if (nclip <= 0) {
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// continue;
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// }
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if (nclip > 0 ) {
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gte_stsxy3(& tri->p0, & tri->p1, & tri->p2);
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gte_avsz3();
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gte_stotz(& orderingtbl_z);
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if ((orderingtbl_z > 0) && (orderingtbl_z < OrderingTbl_Len)) {
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orderingtbl_add_primitive(ordering_buf[orderingtbl_z], tri);
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}
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}
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}
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static_mem.floor.rot.y += 5;
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}
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// Draw floor tape method
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if (0)
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{
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LP_ U4 mem_temp_tape[512]; // Buffer for function addresses
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FArena tape_arena;
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farena_init(&tape_arena, slice_ut(mem_temp_tape, S_(mem_temp_tape)));
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TapeBuilder tb = tb_begin(&tape_arena); {
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// Setup state atoms
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m3s2_rotation(&static_mem.floor.rot, &static_mem.tform_world);
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m3s2_translation(&static_mem.tform_world, &static_mem.floor.pos);
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// Push "Protocol" to tape
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tb_emit(&tb, code_atom_set_gte_world);
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tb_emit(&tb, (Code*)&static_mem.tform_world);
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for (U4 i = 0; i < Floor_num_faces; i++) {
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tb_emit(&tb, code_atom_floor_tri);
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}
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}
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Slice_U4 tape = tb_end(&tb);
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// --- EXECUTION ---
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B1* prim_cursor = (B1*)r_(pa->buf)[static_mem.active_buf_id] + pa->used;
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// 2. Fire the Tape Drive (Explicitly bind the workspace variables)
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tape_run(tape, &prim_cursor, static_mem.floor.faces, static_mem.floor.verts, ordering_buf);
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// 3. Update C-side state
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pa->used = (U4)prim_cursor - (U4)r_(pa->buf)[static_mem.active_buf_id];
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static_mem.floor.rot.y += 5;
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}
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// --- TAPE DIAGNOSTICS ---
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if (1)
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{
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LP_ U4 mem_temp_tape[512];
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FArena tape_arena;
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farena_init(&tape_arena, slice_ut(mem_temp_tape, S_(mem_temp_tape)));
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TapeBuilder tb = tb_begin(&tape_arena); {
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// Skip set_gte_world atom for diagnostics to isolate the triangle loop
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for (U4 i = 0; i < Floor_num_faces; i++) {
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// =======================================================
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// SWAP EMIT TO TEST DIFFERENT PARTS OF THE PIPELINE:
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// =======================================================
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// 1. code_atom_diag_yield -> Tests Tape Engine jump logic
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// 2. code_atom_diag_color -> Tests OT and Prim Arena memory
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// 3. code_atom_diag_gte -> Tests Vertex arrays and GTE Math
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// tb_emit(&tb, code_atom_diag_yield);
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tb_emit(&tb, code_atom_diag_color);
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// tb_emit(&tb, code_atom_diag_gte);
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}
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}
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Slice_U4 tape = tb_end(&tb);
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// Setup Workspace Registers
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B1* prim_cursor = (B1*)r_(pa->buf)[static_mem.active_buf_id] + pa->used;
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tape_run(tape, &prim_cursor, static_mem.floor.faces, static_mem.floor.verts, ordering_buf);
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pa->used = (U4)prim_cursor - (U4)r_(pa->buf)[static_mem.active_buf_id];
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static_mem.floor.rot.y += 5;
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}
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}
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int main(void)
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{
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static_mem = (SMemory){0};
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static_mem.primitives.used = 0;
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ent_cube128_init(& static_mem.cube.verts, & static_mem.cube.faces); {
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Ent_Cube* cube = & static_mem.cube;
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cube->rot = v3s2(0, 0, 0);
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// cube->pos = v3s4(0, 0, 900);
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cube->scale = v3s4_fp_one();
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cube->accel = v3s4(0, 1, 0);
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cube->pos = v3s4(0, -400, 1800);
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}
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ent_floor_init(& static_mem.floor.verts, & static_mem.floor.faces); {
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Ent_Floor* floor = & static_mem.floor;
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floor->rot = v3s2(0, 0, 0);
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floor->pos = v3s4(0, 450, 1800);
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floor->scale = v3s4_fp_one();
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}
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// gknown gp_screen_init();
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gp_screen_init_c11(& static_mem.screen_buf, & static_mem.active_buf_id);
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while (1)
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{
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gknown S4* active_buf_id = & static_mem.active_buf_id;
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gknown U4* ordering_buf = r_(static_mem.ordering_tbl)[active_buf_id[0]];
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gknown PrimitiveArena* pa = & static_mem.primitives;
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update(pa, ordering_buf);
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render();
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gp_display_frame(& static_mem.screen_buf, active_buf_id, ordering_buf, pa);
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};
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return 0;
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}
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