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https://github.com/Ed94/pikuma_ps1.git
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ed
748b58c5c5
Need to rewrite the ps1 lua metaprogram sometime soonish. Getting too bloated... need to consolidate code paths. In this push codebase structure is starting to get a bit more realized. Decided todo now to match Pikuma's linking module files vods beginning to reorganize its codebase as well. Atoms & atom components are not in their on *.atom.c files. (Not calling it tape.c as I don't really bake tapes like that outside of the unity c file so far...) The lua metaprogram has had additional features added to it yet again to avoid hardcoding module handling and supporting multiple atom files per-module. Either after the camera or cd-rom section I'll be most likely pausing to fully refactor the metaprogram. Possibly as a full re-write to get the loc minimal.
77 lines
3.9 KiB
C
77 lines
3.9 KiB
C
#ifdef INTELLISENSE_DIRECTIVES
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# include "gen/macs.h"
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# include "gen/offsets.h"
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# include "gte.h"
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# include "gp.h"
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# include "lottes_tape.h"
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#endif
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ATOM_FILE_DEBUGGER_LINE_MARKER(gte_atom_c);
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#pragma region MACs (Mips Atom Components)
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/* Words: 3; Loads 3 S2 indices from the face array */
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FI_ Slice_MipsCode ac_load_tri_indices(U4 r_face_cusor, U4 r_i0, U4 r_i1, U4 r_i2) atom_dbg_skip MipsAtomComp_Proc_(ac_load_tri_indices, {
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load_half_u(r_i0, r_face_cusor, 0 * S_(S2)),
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load_half_u(r_i1, r_face_cusor, 1 * S_(S2)),
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load_half_u(r_i2, r_face_cusor, 2 * S_(S2)),
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})
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/* Words: 3; Stores the 3 transformed (V2_S2 screen) vertices to the F3.
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* PIPELINE: post-RTPT (SXY0=v0.screen, SXY1=v1.screen, SXY2=v2.screen). */
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FI_ Slice_MipsCode ac_gte_store_f3(U4 r_primitive_cursor) atom_dbg_skip MipsAtomComp_Proc_(ac_gte_store_f3, {
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gte_sw(C2_SXY0, r_primitive_cursor, O_(Poly_F3,p0)),
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gte_sw(C2_SXY1, r_primitive_cursor, O_(Poly_F3,p1)),
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gte_sw(C2_SXY2, r_primitive_cursor, O_(Poly_F3,p2)),
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})
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/* Words: 18; Translates indices to vertex addresses and pushes them to GTE */
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I_ Slice_MipsCode ac_gte_load_tri_verts(U4 r_vert_base, U4 r_v0, U4 r_v1, U4 r_v2) atom_dbg_skip MipsAtomComp_Proc_(ac_gte_load_tri_verts, {
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shift_lleft(R_AT, r_v0, v3s2_byteoff), add_u_self(R_AT, r_vert_base), load_word(R_V0, R_AT, O_(V3_S2,x)), load_word(R_V1, R_AT, O_(V3_S2,z)), 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_v1, v3s2_byteoff), add_u_self(R_AT, r_vert_base), load_word(R_V0, R_AT, O_(V3_S2,x)), load_word(R_V1, R_AT, O_(V3_S2,z)), 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_v2, v3s2_byteoff), add_u_self(R_AT, r_vert_base), load_word(R_V0, R_AT, O_(V3_S2,x)), load_word(R_V1, R_AT, O_(V3_S2,z)), gte_mv_to_data_r(R_V0, C2_VXY2), gte_mv_to_data_r(R_V1, C2_VZ2),
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})
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/* Words: 3; Stores the 3 transformed (V2_S2 screen) vertices of the
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* G4 triangle portion to p0/p1/p2.
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* PIPELINE: post-RTPT, pre-RTPS (SXY0=v0.screen, SXY1=v1.screen, SXY2=v2.screen).
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* MUST be called BEFORE V3-RTPS, otherwise SXY0/1/2 get overwritten with v3
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* (RTPS writes only to SXY2, but to keep the three registers aligned with v0/v1/v2 you must store before RTPS). */
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FI_ Slice_MipsCode ac_gte_store_g4_p012(U4 r_primitive_cursor) atom_dbg_skip MipsAtomComp_Proc_(ac_gte_store_g4_p012, {
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gte_sw(C2_SXY0, r_primitive_cursor, O_(Poly_G4,p0)),
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gte_sw(C2_SXY1, r_primitive_cursor, O_(Poly_G4,p1)),
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gte_sw(C2_SXY2, r_primitive_cursor, O_(Poly_G4,p2)),
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})
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/* Words: 1; Stores the V3 screen coord to the G4's p3 slot.
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* PIPELINE: post-RTPS (SXY2 holds v3.screen because RTPS writes its single-vertex result to SXY2;
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* SXY0 still holds v0.screen from the earlier RTPT.
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*/
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FI_ Slice_MipsCode ac_gte_store_g4_p3(U4 r_primitive_cursor) atom_dbg_skip MipsAtomComp_Proc_(ac_gte_store_g4_p3, { gte_sw(C2_SXY2, r_primitive_cursor, O_(Poly_G4,p3)) })
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#pragma endregion MACs (Mips Atom Components)
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#pragma region Bsked Atoms
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typedef Struct_(Binds_SetGteWorld) {
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M3_S2* transform;
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};
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internal MipsAtom_(set_gte_world) atom_info(
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atom_bind(Binds_SetGteWorld)
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, atom_reads(R_TapePtr)
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){
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/* Pop matrix address from tape into R_T3 ($11) */
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load_word(R_T3, R_TapePtr, O_(Binds_SetGteWorld,transform)),
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add_ui_self( R_TapePtr, S_(Binds_SetGteWorld)),
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/* Load 3x3 Rotation + 3x1 Translation from R_T3 into GTE CONTROL Regs (ctc2) */
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load_word(R_T0, R_T3, 0), load_word(R_T1, R_T3, 4),
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gte_mv_to_ctrl_r(R_T0, gte_cr_RT11), gte_mv_to_ctrl_r(R_T1, gte_cr_RT12),
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load_word(R_T0, R_T3, 8), load_word(R_T1, R_T3, 12), load_word(R_T2, R_T3, 16),
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gte_mv_to_ctrl_r(R_T0, gte_cr_RT13), gte_mv_to_ctrl_r(R_T1, gte_cr_RT21), gte_mv_to_ctrl_r(R_T2, gte_cr_RT22),
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load_word(R_T0, R_T3, 20), load_word(R_T1, R_T3, 24), load_word(R_T2, R_T3, 28),
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gte_mv_to_ctrl_r(R_T0, gte_cr_TRX), gte_mv_to_ctrl_r(R_T1, gte_cr_TRY), gte_mv_to_ctrl_r(R_T2, gte_cr_TRZ),
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mac_yield()
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};
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#pragma endregion Baked Atoms
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