mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-08-25 02:20:33 +00:00
541 lines
17 KiB
C
541 lines
17 KiB
C
#pragma region Vendors
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#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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#pragma endregion Vendors
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#pragma region Duffle Headers
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# include "duffle/gen/macs.h"
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# include "duffle/gen/offsets.h"
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#include "duffle/word_count.metadata.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/pad.h"
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#include "duffle/dsl.atom.h"
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#include "duffle/lottes_tape.h"
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#include "duffle/bios.h"
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#include "duffle/psyq.h"
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#pragma endregion Duffle Headers
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#pragma region Duffle TUs
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#include "duffle/pad.c"
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#include "duffle/math.atom.h"
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#include "duffle/mips.atom.c"
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#include "duffle/gte.atom.c"
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#include "duffle/gp.atom.c"
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#include "duffle/pad.atom.c"
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#include "duffle/psyq.atom.c"
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#pragma endregion Duffle TUs
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#pragma region Hello Camera Headers
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# include "gen/macs.h"
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# include "gen/offsets.h"
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# include "gen/auto_reg.h"
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#include "hello_camera.h"
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#pragma endregion Hello Camera Headers
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#pragma region Hello Joypad TUs
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#include "hello_camera.atom.c"
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#pragma endregion Hello Joypad TUs
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enum {
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Scratchpad_Loc = 0x1F800000,
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};
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#define C_scratch(type) C_(type, Scratchpad_Loc)
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enum {
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Scratchpad_Len = 1024,
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MemTape_Len = 512,
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ResolveLookAtArena_Words = 1024,
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ResolveLookAtArena_Size = ResolveLookAtArena_Words * S_(MipsCode),
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CT_InitAtomMem_Words = Kilo_(4),
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CT_InitAtomMem_Size = CT_InitAtomMem_Words * S_(MipsCode),
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};
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typedef Struct_(SMemory) {
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PrimitiveArena primitives;
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A2_OrderingTable_Buffer ordering_tbl;
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DoubleBuffer screen_buf;
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S4 active_buf_id;
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U4 MemTape[MemTape_Len];
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MT3_S2S4 tform_world;
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MT3_S2S4 tform_view;
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Camera cam;
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Ent_Cube cube;
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Ent_Floor floor;
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PadBiosRaw pad_raw[2];
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PadState pad[2];
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// TODO(Ed): We don't need this we can just cast at any point an address to a desired view of scratchpad, we have the address.
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U4_V scratchpad; // d-cache
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U1 ct_init_atom_mem[CT_InitAtomMem_Size];
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MipsAtom* normalize_v3s4;
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// TODO(Ed): Convert normalize_v3s4 to a generic atom?
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// This would allow us to reduce specializations with the loss being some cycles to loading registers.
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// The cost would be 3 loads (scratch, src_ptr, dst_offset) from tape and
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U1 resolve_look_at_mem[ResolveLookAtArena_Size];
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MipsAtom* resolve_look_at_bundle[AtomBundle_Len(resolve_look_at)];
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};
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global SMemory smem;
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extern SMemory smem;
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#define pad0_btn_(btn) btn & smem.pad[0].buttons
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#define pad1_btn_(btn) btn & smem.pad[1].buttons
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I_ B1* prim__alloc(U4 type_width, Str8 type_name) {
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gknown PrimitiveArena* pa = & smem.primitives;
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gknown B1* buf = (B1*) r_(smem.primitives.buf)[smem.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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I_ void resolve_look_at_c11(MT3_S2S4* look_at, P3_S4* eye, P3_S4* target, V3_S4* up_in) {
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// RGA(Lengyel): Build matrix expansion of a rigid transformation. Corresponding motor is not constructed; we write the LA form for GTE.
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// Preconditions: eye != target, up_in not collinear with (target - eye).
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V3_S4 right, up, forward;
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V3_S4 ux, uy, uz;
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V3_S4 pos, off;
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forward = target[0]; sub_v3s4(& forward, eye[0]); // RGA(Lengyel): Affine point - point = zero-weight direction.
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normalize_v3s4(& forward, & uz); // RGA(Lengyel): Normalize the direction bulk. Not finite-point unitization.
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cross_v3s4(& uz, up_in, & right); normalize_v3s4(& right, & ux); // RGA(Lengyel): Complement(Wedge(forward, up_in)) -> right axis.
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cross_v3s4(& uz, & ux, & up); normalize_v3s4(& up, & uy); // RGA(Lengyel): Complement(Wedge(forward, right)) -> up axis.
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// RGA(Lengyel): matrix expansion of the world-to-camera rotation (basis rows).
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look_at->m[0][0] = ux.x; look_at->m[0][1] = ux.y; look_at->m[0][2] = ux.z;
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look_at->m[1][0] = uy.x; look_at->m[1][1] = uy.y; look_at->m[1][2] = uy.z;
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look_at->m[2][0] = uz.x; look_at->m[2][1] = uz.y; look_at->m[2][2] = uz.z;
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pos = eye[0]; mul_v3s4(& pos, v3s4(-1,-1,-1)); // RGA(Lengyel): -eye in world coordinates (spatial bulk only; implicit weight is dropped).
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// RGA(Lengyel): R * (-eye) is the full matrix translation column.
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// Motor translator would store half this displacement in m.xyz; GTE consumes full column.
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mul_m3s2_v3s4(look_at, & pos, & off);
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trans_m3s2( look_at, & off);
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}
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FI_ void camera_look_at_c11(Camera* c, P3_S4* target, V3_S4* up_in) { resolve_look_at_c11(& c->look_at, & c->pos, target, up_in); }
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internal void compile_resolve_look_at(void) {
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/* Wrap the static arena in a MipsAtomBuilder. */
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AtomArena ab = atomarena_make(slice_ut_arr(smem.resolve_look_at_mem));
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TapeBuilder tb = tb_make(slice_ut_arr(smem.resolve_look_at_bundle));
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U4 pin_mask = regfile_abi_mask | (1 << R_ResolveScratch);
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RegFile rf = regfile(pin_mask);
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#define ralloc() regfile_alloc(& rf)
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#define ralloc_v3() { ralloc(), ralloc(), ralloc() }
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tb_emit_(AtomBundleEntry_(resolve_look_at, input_and_sub)(& ab,
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RegUse_(resolve_look_at_input_and_sub) {
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.scratch = R_ResolveScratch,
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.target = ralloc(),
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.eye = ralloc(),
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.up_in = ralloc(),
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.t0 = ralloc(),
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.t1 = ralloc(),
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.t2 = ralloc(),
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.t3 = ralloc(),
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.t4 = ralloc(),
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}
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));
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 1: normalize fwd→uz === */
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U2 src_offset = O_(ResolveLookAtScratch, fwd);
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U2 dst_offset = O_(ResolveLookAtScratch, uz);
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smem.resolve_look_at_bundle[1] = build_normalize_v3s4(& ab,
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src_offset, dst_offset, RegUse_(build_normalize_v3s4){
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.scratch = R_ResolveScratch,
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.src_ptr = ralloc(),
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.dst_ptr = ralloc(),
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.recip_est = ralloc(),
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.norm = ralloc(),
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.shift = ralloc(),
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.src_x = ralloc(),
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.t3 = ralloc(),
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.t4 = ralloc(),
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.t5 = ralloc(),
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 2: cross uz×up_in→right === */
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// smem.resolve_look_at_bundle[2] = AtomBundleEntry_(resolve_look_at,cross_uz_up_to_right)(& ab,
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smem.resolve_look_at_bundle[2] = resolve_look_at_cross_uz_up_into_right(& ab,
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RegUse_(resolve_look_at_cross_uz_up_into_right) {
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.scratch = R_ResolveScratch,
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.a = ralloc(),
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.b = ralloc(),
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.c = ralloc(),
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.d = ralloc(),
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.f = ralloc(),
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.t1 = ralloc(),
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.t2 = ralloc(),
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.t0 = ralloc(),
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 3: normalize right→ux === */
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src_offset = O_(ResolveLookAtScratch, right);
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dst_offset = O_(ResolveLookAtScratch, ux);
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smem.resolve_look_at_bundle[3] = build_normalize_v3s4(& ab,
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src_offset, dst_offset, RegUse_(build_normalize_v3s4){
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.scratch = R_ResolveScratch,
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.src_ptr = ralloc(),
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.dst_ptr = ralloc(),
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.recip_est = ralloc(),
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.norm = ralloc(),
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.shift = ralloc(),
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.src_x = ralloc(),
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.t3 = ralloc(),
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.t4 = ralloc(),
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.t5 = ralloc(),
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 4: cross uz×ux→up === */
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smem.resolve_look_at_bundle[4] = resolve_look_at__cross_uz_ux_to_up_proc(& ab,
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RegUse_(resolve_look_at__cross_uz_ux_to_up_proc){
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.scratch = R_ResolveScratch,
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.a = ralloc_v3(), /* T0 T1 T2 */
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.b = ralloc_v3(), /* T3 T5 T6 */
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.t0 = ralloc(), /* T7 = up */
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.t1 = ralloc(), /* V0 = uz / rt11 */
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.t2 = ralloc(), /* V1 = ux / rt22 */
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 5: normalize up→uy === */
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src_offset = O_(ResolveLookAtScratch, up);
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dst_offset = O_(ResolveLookAtScratch, uy);
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smem.resolve_look_at_bundle[5] = build_normalize_v3s4(& ab,
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src_offset, dst_offset,
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RegUse_(build_normalize_v3s4){
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.scratch = R_ResolveScratch,
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.src_ptr = ralloc(),
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.dst_ptr = ralloc(),
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.recip_est = ralloc(),
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.norm = ralloc(),
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.shift = ralloc(),
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.src_x = ralloc(),
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.t3 = ralloc(),
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.t4 = ralloc(),
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.t5 = ralloc(),
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 6a: populate (m[][] from ux/uy/uz, t[]=0) === */
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smem.resolve_look_at_bundle[6] = resolve_look_at__populate_proc(& ab,
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RegUse_(resolve_look_at__populate_proc){
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.scratch = R_ResolveScratch,
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.look_at = ralloc(), /* T0 */
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.row = ralloc_v3(), /* T1 T2 T3 */
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.ux = ralloc(), /* T5 = ux */
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.uy = ralloc(), /* T6 = uy */
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.uz = ralloc(), /* T7 = uz */
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});
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regfile_reset_to_mask(& rf, pin_mask);
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/* === ATOM 6a.5: set_gte_mt3s2s4 (BAKED — ctc2 RT matrix) === */
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smem.resolve_look_at_bundle[7] = (MipsAtom*) & set_gte_mt3s2s4;
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/* === ATOM 6b: matrix_vector (RT * (-eye) >> 12) === */
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smem.resolve_look_at_bundle[8] = resolve_look_at__matrix_vector_proc(& ab,
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RegUse_(resolve_look_at__matrix_vector_proc){
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.scratch = R_ResolveScratch,
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.look_at = ralloc(), /* T0 */
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.eye = ralloc(), /* T1 */
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.v = ralloc_v3(), /* T2 T3 T5 */
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});
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/* === ATOM 6c: trans_matrix (off → look_at->t[]) === */
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U4 r_look_at_6c = R_T0; /* tape pop → look_at* */
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U4 r_scratch_6c = R_ResolveScratch;
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U4 r_off_ptr_6c = R_T1; /* &scratch.eye (= off dst) */
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U4 r_tmp0_6c = R_T2;
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smem.resolve_look_at_bundle[9] = resolve_look_at__trans_matrix_proc(& ab,
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r_look_at_6c, r_scratch_6c, r_off_ptr_6c, r_tmp0_6c, R_T3, R_T4);
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/* Sanity check: arena didn't overflow. */
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assert(ab.used <= ResolveLookAtArena_Size);
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#undef ralloc
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}
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/* Emit the resolve_look_at bundle into the tape. Called once per frame from update(). */
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I_ void resolve_look_at(TapeBuilder_R tb
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, MT3_S2S4* look_at
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, P3_S4* eye
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, P3_S4* target
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, V3_S4* up_in
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){
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tb_emit(tb, smem.resolve_look_at_bundle[0]); {
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tb_data(tb, u4_(target));
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tb_data(tb, u4_(eye));
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tb_data(tb, u4_(up_in));
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tb_data(tb, u4_(smem.scratchpad));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[1]); {
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// tb_data(tb, u4_(Scratchpad_Loc));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[2]); { }
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tb_emit(tb, smem.resolve_look_at_bundle[3]); {
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// tb_data(tb, u4_(Scratchpad_Loc));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[4]); { }
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tb_emit(tb, smem.resolve_look_at_bundle[5]); {
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// tb_data(tb, u4_(Scratchpad_Loc));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[6]); {
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tb_data(tb, u4_(look_at));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[7]); {
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tb_data(tb, u4_(look_at));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[8]); {
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tb_data(tb, u4_(look_at));
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}
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tb_emit(tb, smem.resolve_look_at_bundle[9]); {
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// tb_data(tb, u4_(look_at));
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}
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}
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GCC_OPTIMIZATION_DISABLE
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void update(PrimitiveArena* pa, U4* ordering_buf)
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{
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TapeBuilder tb = tb_make(slice_ut_arr(smem.MemTape));
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// Pad Input
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{
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tb.used = 0; tb_scope_run(& tb) {
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// Grab latest state from bios.
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tb_emit_(pad_bios_snapshot);
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tb_data_(raw, & smem.pad_raw[0]);
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tb_data_(state, & smem.pad[0]);
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// tb_emit_(pad_bios_snapshot);
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// tb_data_(raw, & smem.pad_raw[1]);
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// tb_data_(state, & smem.pad[1]);
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tb_emit_(pad_input_cam);
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tb_data_(state, & smem.pad[0]);
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tb_data_(cam, & smem.cam);
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// tb_emit_(pad_input_cube_rotation);
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// tb_data_(state, & smem.pad[0]);
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// tb_data_(cube_rot, & smem.cube.rot);
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// tb_data_(floor_rot, & smem.floor.rot);
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}
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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 = & smem.cube.pos;
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gknown V3_S4_R vel = & smem.cube.vel;
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gknown V3_S4_R acc = & smem.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 > smem.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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B4 use_c11_path = false;
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if (use_c11_path) {
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camera_look_at_c11(& smem.cam, & smem.cube.pos, & v3s4(0, -fp_one, 0));
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}
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if (use_c11_path == false)
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{
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tb.used = 0; tb_scope_run(& tb) {
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resolve_look_at(& tb, & smem.cam.look_at, & smem.cam.pos, & smem.cube.pos, & v3s4(0, -fp_one, 0));
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}
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}
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// Draw cube
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if (1)
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{
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mt3s2s4_rotation (& smem.cube.rot, & smem.tform_world);
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mt3s2s4_translation(& smem.tform_world, & smem.cube.pos);
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mt3s2s4_scale (& smem.tform_world, & smem.cube.scale);
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// Combine world and look_at matrix.
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gte_comp_coord_m3s2(& smem.cam.look_at, & smem.tform_world, & smem.tform_view);
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gte_matrix_set_rotation (& smem.tform_view);
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gte_matrix_set_translation(& smem.tform_view);
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// gte_matrix_set_rotation (& smem.tform_world);
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// gte_matrix_set_translation(& smem.tform_world);
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U4 prim_base = u4_(pa->buf[smem.active_buf_id]);
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U4 prim_cursor = prim_base + pa->used;
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tb.used = 0; tb_scope(& tb) {
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tb_emit(& tb, rbind_cube_g4_face);
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tb_data(& tb, prim_cursor);
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tb_data(& tb, u4_(smem.cube.faces));
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tb_data(& tb, u4_(smem.cube.verts));
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tb_data(& tb, u4_(ordering_buf));
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for (U4 i = 0; i < Cube_num_faces; i++) {
|
||
// Two triangles per quad face: (x,y,z) and (x,z,w)
|
||
tb_emit(& tb, cube_g4_face);
|
||
}
|
||
|
||
tb_emit(& tb, sync_primitive_arena);
|
||
tb_data(& tb, u4_(& pa->used));
|
||
tb_data(& tb, prim_base);
|
||
}
|
||
tape_run_a02_s07(tb_slice(tb));// Fire off the tape (bigger-clobber variant).
|
||
|
||
// smem.cube.rot.y += 30;
|
||
}
|
||
// Draw floor
|
||
if (1)
|
||
{
|
||
mt3s2s4_rotation (& smem.floor.rot, & smem.tform_world);
|
||
mt3s2s4_translation(& smem.tform_world, & smem.floor.pos);
|
||
mt3s2s4_scale (& smem.tform_world, & smem.floor.scale);
|
||
|
||
// Combine world and look_at matrix.
|
||
gte_comp_coord_m3s2(& smem.cam.look_at, & smem.tform_world, & smem.tform_view);
|
||
|
||
gte_matrix_set_rotation (& smem.tform_view);
|
||
gte_matrix_set_translation(& smem.tform_view);
|
||
|
||
U4 prim_base = u4_(pa->buf[smem.active_buf_id]);
|
||
U4 prim_cursor = prim_base + pa->used;
|
||
|
||
// TODO(Ed): We should do a bounds check beforehand to confirm pa can hold all tris?
|
||
// The tape atoms in-flight should not need to care.
|
||
|
||
// Prepare the tape. (Push protocol to tape)
|
||
tb.used = 0; tb_scope(& tb) {
|
||
// tb_emit(& tb, set_gte_mt3s2s4);
|
||
// tb_data(& tb, u4_(& smem.tform_view));
|
||
|
||
tb_emit(& tb, rbind_floor_f3_face);
|
||
// TODO(Ed): Just use a single context struct ref?
|
||
tb_data(& tb, prim_cursor);
|
||
tb_data(& tb, u4_(smem.floor.faces));
|
||
tb_data(& tb, u4_(smem.floor.verts));
|
||
tb_data(& tb, u4_(ordering_buf));
|
||
for (U4 i = 0; i < Floor_num_faces; i++) {
|
||
tb_emit(& tb, floor_f3_face);
|
||
}
|
||
// After floor_f3_face iterations complete, the primitive arena's used counter needs updating.
|
||
tb_emit(& tb, sync_primitive_arena);
|
||
tb_data(& tb, u4_(& pa->used));
|
||
tb_data(& tb, prim_base);
|
||
}
|
||
tape_run_a02_s07(tb_slice(tb));// Fire off the tape (bigger-clobber variant).
|
||
|
||
// C-side state (pa->used) has already been updated by the tape!
|
||
// smem.floor.rot.y += 5;
|
||
}
|
||
}
|
||
GCC_OPTIMIZATION_ENABLE
|
||
|
||
void render(void) {
|
||
}
|
||
|
||
void gp_display_frame(DoubleBuffer* screen_buf, S4* active_buf_id, U4* ordering_buf, PrimitiveArena* pa) {
|
||
draw_sync(0);
|
||
vsync(0);
|
||
displayenv_put(& r_(screen_buf->display)[active_buf_id[0] ]);
|
||
drawenv_put (& r_(screen_buf->draw) [active_buf_id[0] ]);
|
||
{
|
||
draw_orderingtbl(ordering_buf + OrderingTbl_Len - 1);
|
||
pa->used = 0;
|
||
}
|
||
active_buf_id[0] = ! active_buf_id[0]; // Swap current buffer
|
||
}
|
||
|
||
GCC_OPTIMIZATION_DISABLE
|
||
int main(void)
|
||
{
|
||
smem = (SMemory){0};
|
||
// TODO(Ed): remove this field we don't need it in smem.
|
||
smem.scratchpad = C_(U4_V, Scratchpad_Loc);
|
||
// smem.primitives.used = 0;
|
||
// smem.active_buf_id = 0;
|
||
smem.cam.pos = v3s4(500, -1000, -1500);
|
||
/*Persistent Entity Setup*/{
|
||
ent_cube128_init(& smem.cube.verts, & smem.cube.faces); {
|
||
Ent_Cube* cube = & smem.cube;
|
||
cube->rot = v3s2(0, 0, 0);
|
||
cube->scale = v3s4_fp_one();
|
||
cube->accel = v3s4(0, 1, 0);
|
||
cube->pos = v3s4(0, -400, 1800);
|
||
}
|
||
ent_floor_init(& smem.floor.verts, & smem.floor.faces); {
|
||
Ent_Floor* floor = & smem.floor;
|
||
floor->rot = v3s2(0, 0, 0);
|
||
floor->pos = v3s4(0, 450, 1800);
|
||
floor->scale = v3s4_fp_one();
|
||
}
|
||
}
|
||
TapeBuilder tb = tb_make(slice_ut_arr(smem.MemTape)); {
|
||
reset_graph(0);
|
||
/* Direct BIOS: poll both ports during VBlank. */
|
||
pad_bios_init_start(& smem.pad_raw[0], & smem.pad_raw[1]);
|
||
|
||
compile_resolve_look_at();
|
||
|
||
/* Pinned registers for the GPU init atom. */
|
||
register U4* io_base_addr rgcc(R_IO_BaseAddr) = u4_r(IO_BASE_ADDR);
|
||
register DoubleBuffer* screen_buf rgcc(R_ScreenBuf) = & smem.screen_buf;
|
||
tb.used = 0; tb_scope_run(& tb) {
|
||
tb_emit(& tb, screen_env_init);
|
||
tb_emit(& tb, gp_screen_init);
|
||
}
|
||
}
|
||
while (1) {
|
||
gknown S4* active_buf_id = & smem.active_buf_id;
|
||
gknown U4* ordering_buf = r_(smem.ordering_tbl)[active_buf_id[0]];
|
||
gknown PrimitiveArena* pa = & smem.primitives;
|
||
update(pa, ordering_buf);
|
||
render();
|
||
gp_display_frame(& smem.screen_buf, active_buf_id, ordering_buf, pa);
|
||
};
|
||
return 0;
|
||
}
|
||
GCC_OPTIMIZATION_ENABLE
|