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reducing cross product atom procs to a single one in gte for once.

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ed
2026-08-17 01:05:58 -04:00
parent 18b1d5a04b
commit e79c364b40
8 changed files with 128 additions and 186 deletions
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code/duffle/gte.atom.c
+41
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@@ -18,6 +18,18 @@ atom_dbg_skip MipsAtomComp_Proc_(ab, {
load_half_u(r_i2, r_face_cusor, 2 * S_(S2)),
})
FI_ Slice_MipsCode ac_gte_mv_to_cr_diag_v3s4(AtomBuilder_R ab, Reg_(V3_S4) v) MipsAtomComp_Proc_(ab, {
gte_mv_to_ctrl_r(v.y, gte_cr_RT13),
gte_mv_to_ctrl_r(v.z, gte_cr_RT22),
gte_mv_to_ctrl_r(v.x, gte_cr_RT11),
})
FI_ Slice_MipsCode ac_gte_ld_ir123_v3s4(AtomBuilder_R ab, Reg_(V3_S4) v) MipsAtomComp_Proc_(ab, {
gte_mv_to_data_r(v.x, C2_IR1),
gte_mv_to_data_r(v.y, C2_IR2),
gte_mv_to_data_r(v.z, C2_IR3),
})
/* Words: 3; Stores the 3 transformed (V2_S2 screen) vertices to the F3.
* PIPELINE: post-RTPT (SXY0=v0.screen, SXY1=v1.screen, SXY2=v2.screen). */
FI_ Slice_MipsCode ac_gte_store_f3(AtomBuilder_R ab, U4 r_primitive_cursor) atom_dbg_skip MipsAtomComp_Proc_(ab, {
@@ -319,6 +331,35 @@ MipsAtom_Proc_(aa, {
mac_yield()
})
typedef Struct_(Binds_gte_cross_v3s4) { V3_S4* src_a; V3_S4* src_b; V3_S4* out; };
typedef Struct_(RegUse_gte_cross_v3s4) {
Reg_(V3_S4) a;
Reg_(V3_S4) b;
union { Reg t0, out; };
union { Reg t1, src_a, rt11; };
union { Reg t2, src_b, rt22; };
};
internal MipsAtom* gte_cross_v3s4(AtomArena_R aa, RegUse_gte_cross_v3s4 r)
atom_info(atom_bind(Binds_gte_cross_v3s4)) MipsAtom_Proc_(aa, {
load_word(r.src_a, R_TapePtr, O_(Binds_gte_cross_v3s4,src_a)),
load_word(r.src_b, R_TapePtr, O_(Binds_gte_cross_v3s4,src_b)),
load_word(r.out, R_TapePtr, O_(Binds_gte_cross_v3s4,out)),
LdSlot_ add_ui_self(R_TapePtr, S_(Binds_gte_cross_v3s4)),
mac_load_v3s4(r.a, r.src_a, 0), LdSlot_
mac_load_v3s4(r.b, r.src_b, 0), LdSlot_
mac_gte_mv_to_cr_diag_v3s4(r.a), GteDelay_ /* RT diagonal: D1 = a.x, D2 = a.y, D3 = a.z. */
mac_gte_ld_ir123_v3s4(r.b), GteDelay_ /* IR: second operand. */
gte_cmdw_cross, /* MAC1/2/3 = a × b */
mac_gte_mv_from_data_r_mac123(r.a.x, r.a.y, r.a.z), GteDelay_ //nop,
mac_shift_aright_v3s4_self(r.a, 12),
mac_store_v3s4(r.a, r.out, 0),
mac_yield()
})
#pragma endregion Atom Procs
#pragma region Baked Atoms