mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-08-08 08:38:50 +00:00
219 lines
7.8 KiB
C
219 lines
7.8 KiB
C
#ifdef INTELLISENSE_DIRECTIVES
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# include "duffle/gen/duffle.macs.h"
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# include "duffle/gen/duffle.offsets.h"
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# include "duffle/atom_dsl.h"
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# include "duffle/lottes_tape.h"
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# include "duffle/word_count.metadata.h"
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# include "gen/hello_gte.offsets.h"
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# include "hello_gte.h"
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#endif
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#pragma region MACs (Mips Atom components)
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#pragma endregion MACs
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#pragma region Baked Atoms
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/* DIAGNOSTIC 1: Pure tape loop test */
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internal MipsAtom_(diag_yield) { mac_yield() };
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/* DIAGNOSTIC 2: Pure memory test (No GTE). Draws a fixed cyan triangle. */
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internal MipsAtom_(diag_color) {
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store_word( R_0, R_T7, 0),
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load_upper_i(R_AT, gp0_cmd_poly_f3 << 8 | 0xFF), /* High: MipsCode Poly_F3(0x20) + Color B:FF */
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or_i_self( R_AT, 0xFF00), /* Low: Color G:FF, R:00 (Cyan) */
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store_word( R_AT, R_T7, 4),
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/* Fake coordinates - Swapped winding order to prevent GPU culling! */
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load_upper_i(R_AT, 0x0010), or_i_self(R_AT, 0x0010), store_word(R_AT, R_T7, 8), /* (16, 16) */
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load_upper_i(R_AT, 0x0050), or_i_self(R_AT, 0x0010), store_word(R_AT, R_T7, 12), /* (80, 16) */
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load_upper_i(R_AT, 0x0010), or_i_self(R_AT, 0x0050), store_word(R_AT, R_T7, 16), /* (16, 80) */
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add_ui( R_T1, R_0, 10),
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shift_lleft_self(R_T1, S_(U4)/2),
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add_u_self( R_T1, R_T6),
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load_word( R_AT, R_T1, 0),
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load_upper_i(R_V0, (S_(Poly_F3)/S_(U4) - S_(PolyTag)/S_(U4)) << PolyTag_len_bits),
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store_word( R_AT, R_T7, 0),
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shift_lleft(R_AT, R_T7, S_(PolyTag_len_bits)), shift_lright(R_AT, R_AT, S_(PolyTag_len_bits)),
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or_u_self( R_AT, R_V0),
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store_word( R_AT, R_T1, 0),
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add_ui(R_T7, R_T7, 20),
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mac_yield()
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};
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/* DIAGNOSTIC 3: Pure GTE test (No Memory Writes) */
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internal MipsAtom_(diag_gte) {
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/* Load 3 indices */
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load_half_u(R_T0, R_T4, 0),
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load_half_u(R_T1, R_T4, 2),
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load_half_u(R_T2, R_T4, 4),
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/* Load Vertices into GTE */
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shift_lleft( R_AT, R_T0, 3), add_u( R_AT, R_AT, R_T5),
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load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
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gte_mv_to_data_r(R_V0, C2_VXY0), gte_mv_to_data_r(R_V1, C2_VZ0),
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shift_lleft( R_AT, R_T1, 3), add_u(R_AT, R_AT, R_T5),
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load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
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gte_mv_to_data_r(R_V0, C2_VXY1), gte_mv_to_data_r(R_V1, C2_VZ1),
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shift_lleft(R_AT, R_T2, 3), add_u(R_AT, R_AT, R_T5),
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load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
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gte_mv_to_data_r(R_V0, C2_VXY2), gte_mv_to_data_r(R_V1, C2_VZ2),
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/* Run Math */
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nop2, gte_cmdw_rtpt,
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nop2, gte_cmdw_nclip,
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nop2,
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/* Advance Face Cursor and Yield */
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add_ui(R_T4, R_T4, 8),
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mac_yield()
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};
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typedef Struct_(Binds_CubeTri) {
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U4 PrimCursor;
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V4_S2* FaceCursor;
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V3_S2* VertBase;
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U4* OtBase;
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};
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internal MipsAtom_(rbind_cube_g4_face) atom_info(atom_bind(Binds_CubeTri), atom_phase(cube_g4)
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, atom_reads(R_TapePtr)
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, atom_writes(R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase)
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){
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/* Pop 4 arguments from the tape directly into the workspace registers */
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load_word(R_PrimCursor, R_TapePtr, O_(Binds_CubeTri,PrimCursor)),
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load_word(R_FaceCursor, R_TapePtr, O_(Binds_CubeTri,FaceCursor)),
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load_word(R_VertBase, R_TapePtr, O_(Binds_CubeTri,VertBase)),
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load_word(R_OtBase, R_TapePtr, O_(Binds_CubeTri,OtBase)),
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add_ui_self( R_TapePtr, S_(Binds_CubeTri)),
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mac_yield()
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};
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// cube_g4_face — Draw one cube face (Gouraud-shaded quad) via the GTE tape pipeline
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internal
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MipsAtom_(cube_g4_face) atom_info(atom_phase(cube_g4),
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atom_reads( R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase),
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atom_writes(R_PrimCursor, R_FaceCursor)
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){
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load_half_u(R_T0, R_FaceCursor, 0 * S_(S2)),
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load_half_u(R_T1, R_FaceCursor, 1 * S_(S2)),
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load_half_u(R_T2, R_FaceCursor, 2 * S_(S2)),
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load_half_u(R_T3, R_FaceCursor, 3 * S_(S2)),
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mac_gte_load_tri_verts(R_T0, R_T1, R_T2),
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nop2, gte_cmdw_rotate_translate_perspective_triple, // required cpu -> gte delay slot
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gte_cmdw_nclip,
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gte_mv_from_data_r(R_T0, C2_MAC0), nop,
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branch_le_zero(R_T0, atom_offset(cull, cube_g4_face_exit)), nop,
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store_word(R_0, R_PrimCursor, O_(Poly_G4, tag)),
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shift_lleft(R_AT, R_T3, v3s2_byteoff), add_u(R_AT, R_AT, R_VertBase),
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load_word(R_V0, R_AT, O_(V3_S2, x)), load_word(R_V1, R_AT, O_(V3_S2, z)),
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gte_mv_to_data_r(R_V0, C2_VXY0), gte_mv_to_data_r(R_V1, C2_VZ0),
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mac_gte_store_g4_p012(),
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gte_cmdw_rotate_translate_perspective_single,
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mac_gte_store_g4_p3(),
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gte_cmdw_avg_sort_z4,
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gte_mv_from_data_r(R_T1, C2_OTZ),
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add_ui( R_AT, R_0, OrderingTbl_Len),
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set_lt_u( R_AT, R_T1, R_AT),
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branch_equal(R_AT, R_0, atom_offset(bounds_chk, cube_g4_face_exit)), nop,
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mac_insert_ot_tag_g4(),
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mac_format_g4_color(
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/* c0 magenta */ 0xFF, 0x00, 0xFF,
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/* c1 yellow */ 0xFF, 0xFF, 0x00,
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/* c2 cyan */ 0x00, 0xFF, 0xFF,
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/* c3 green */ 0x00, 0xFF, 0x00),
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// end: branch(bounds_chk)
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// end: branch(cull)
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atom_label(cube_g4_face_exit)
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add_ui_self(R_PrimCursor, S_(Poly_G4)), /* 9 words = Poly_G4 */
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add_ui_self(R_FaceCursor, S_(S2) * 4), /* 4 × S2 = 8 bytes */
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mac_yield()
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};
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typedef Struct_(Binds_FloorTri) {
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U4 PrimCursor;
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V3_S2* FaceCursor;
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V3_S2* VertBase;
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U4* OtBase;
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};
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internal
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MipsAtom_(rbind_floor_f3_face) atom_info(atom_bind(Binds_FloorTri), atom_phase(floor_f3)
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, atom_reads(R_TapePtr)
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, atom_writes(R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase)
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){
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/* Pop 4 arguments from the tape directly into the workspace registers */
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load_word(R_PrimCursor, R_TapePtr, O_(Binds_FloorTri,PrimCursor)),
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load_word(R_FaceCursor, R_TapePtr, O_(Binds_FloorTri,FaceCursor)),
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load_word(R_VertBase, R_TapePtr, O_(Binds_FloorTri,VertBase)),
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load_word(R_OtBase, R_TapePtr, O_(Binds_FloorTri,OtBase)),
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add_ui_self( R_TapePtr, S_(Binds_FloorTri)),
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mac_yield()
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};
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// atom_dbg_skip
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internal
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MipsAtom_(floor_f3_face) atom_info(atom_phase(floor_f3)
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, atom_reads( R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase)
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, atom_writes(R_PrimCursor, R_FaceCursor)
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) {
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mac_load_tri_indices( R_T0, R_T1, R_T2),
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mac_gte_load_tri_verts(R_T0, R_T1, R_T2),
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nop2, gte_cmdw_rotate_translate_perspective_triple, // 2 nops retire the final cpu -> gte writes before RTPT
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gte_cmdw_nclip,
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/* Culling (Branch forward if Backface) */
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gte_mv_from_data_r(R_T0, C2_MAC0),
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nop, branch_le_zero(R_T0, atom_offset(culling, floor_f3_face_exit)), nop, // required gte -> cpu load-delay slot.
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/* Format Primitive */
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mac_gte_store_f3(),
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/* Calculate Depth */
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gte_avg_sort_z3,
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gte_mv_from_data_r(R_T1, C2_OTZ),
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/* Bounds Check OTZ < 2048 (Branch forward to skip insertion) */
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add_ui( R_AT, R_0, OrderingTbl_Len),
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set_lt_u( R_AT, R_T1, R_AT),
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branch_equal(R_AT, R_0, atom_offset(bounds_chk, floor_f3_face_exit)), nop,
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mac_format_f3_color(0xFF, 0xFF, 0xFF), // RGB-form (R=FF, G=FF, B=FF = white)
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mac_insert_ot_tag_f3(), /* Insert into Ordering Table Linked List */
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add_ui_self(R_PrimCursor, S_(Poly_F3)), /* Advance Prim Cursor (5 words) */
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// Note(Ed): No bounds checking, should be checked before atom runs.
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// end: branch(bounds_chk)
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// end: branch(culling)
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/* Advance Input Cursor & Yield (Both branch targets land here) */
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atom_label(floor_f3_face_exit)
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add_ui_self(R_FaceCursor, S_(S2) * 4), /* Advance Face Cursor (4 * S2 = 8 bytes) */
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mac_yield()
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};
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typedef Struct_(Binds_SyncPrimitiveArena) { U4 used; U4 cursor; };
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internal MipsAtom_(sync_primitive_arena) atom_info(atom_bind(Binds_SyncPrimitiveArena)
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, atom_reads( R_TapePtr, R_PrimCursor)
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, atom_writes(R_TapePtr)
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){
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load_word(R_AT, R_TapePtr, O_(Binds_SyncPrimitiveArena,used)),
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load_word(R_T0, R_TapePtr, O_(Binds_SyncPrimitiveArena,cursor)),
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add_ui_self( R_TapePtr, S_(Binds_SyncPrimitiveArena)),
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/* Calculate byte offset and store directly back to RAM */
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sub_u( R_T0, R_PrimCursor, R_T0), // R_T0 = R_PrimCursor - binds.cursor
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store_word(R_T0, R_AT, 0), // R_AT[0] = R_T0
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mac_yield()
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};
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#pragma endregion Baked Atoms
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