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cube_tri

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This commit is contained in:
Edward R. Gonzalez
2026-07-09 10:48:55 -04:00
parent 8541713d0c
commit 407c7d352a
5 changed files with 98 additions and 94 deletions
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code/duffle/atom_dsl.h
+6 -1
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@@ -459,4 +459,9 @@
* ============================================================================*/
#define atom_offset(F, T) atom_offset_ ## F ## _ ## T
#define atom_label(name) /* anchor — see metaprogram documentation */
/* atom_label is a pure annotation for the metaprogram's offset calculations.
* The macro expands to a C comment, so the C preprocessor strips it to
* whitespace — NO instruction word is emitted in the asm. The metaprogram
* still recognises the literal `atom_label(name)` token in source and
* records the marker at the current pos. */
#define atom_label(name) /* atom_label anchor: name */
code/duffle/lottes_tape.h
+28 -5
View File
@@ -119,21 +119,44 @@ FI_ Slice_U4 tb_slice(TapeBuilder tb) { return (Sli
, shift_lright(R_AT, R_AT, S_(polytag_len_bits)) \
, store_word( R_AT, R_T1, O_(PolyTag,bf_addr_len)) /* OrderingTable[OTZ] = PrimCursor */
/* Words: 3; Emits one (cmd|color) word to R_PrimCursor at the given
* byte offset. Internal helper used by the *_format_*_color macros.
* Args: off = U4 byte offset, code = GP0 cmd byte (0 for c1/c2/c3 of
* a Poly_G4), r/g/b = 8-bit RGB byte values. */
#define mac_pack_color_word(off, code, r,g,b) \
load_upper_i(R_AT, (code) << 8 | (b)) \
, or_i_self( R_AT, ((g) << 8) | (r)) \
, store_word( R_AT, R_PrimCursor, (off))
/* Words: 3; Emits the F3 command+color word (cmd byte | BLUE | GREEN | RED)
* Args: _r, _g, _b are 8-bit RGB byte values (not raw 16-bit fields).
* Migrated from hello_gte_tape.c; takes RGB form per the Phase 3
* convention. */
#define mac_format_f3_color(r,g,b) \
load_upper_i(R_AT, gp0_cmd_poly_f3 << 8 | (b)) \
, or_i_self( R_AT, ((g) << 8) | (r)) \
, store_word( R_AT, R_PrimCursor, O_(Poly_F3,color))
#define mac_format_f3_color(r,g,b) mac_pack_color_word(O_(Poly_F3,color), gp0_cmd_poly_f3, r,g,b)
/* Words: 3; Stores the 3 transformed (V2_S2 screen) vertices to the F3 */
#define mac_gte_store_f3() \
gte_sw(C2_SXY0, R_PrimCursor, O_(Poly_F3,p0)) \
gte_sw(C2_SXY0, R_PrimCursor, O_(Poly_F3,p0)) \
, gte_sw(C2_SXY1, R_PrimCursor, O_(Poly_F3,p1)) \
, gte_sw(C2_SXY2, R_PrimCursor, O_(Poly_F3,p2))
/* Words: 12; Emits the four (code|color) words of a Poly_G4.
* Args: rN,gN,bN are 8-bit RGB byte values for each of the 4 vertices. */
#define mac_format_g4_color(r0,g0,b0, r1,g1,b1, r2,g2,b2, r3,g3,b3) \
mac_pack_color_word(O_(Poly_G4,c0), gp0_cmd_poly_g4, r0,g0,b0) \
, mac_pack_color_word(O_(Poly_G4,c1), 0, r1,g1,b1) \
, mac_pack_color_word(O_(Poly_G4,c2), 0, r2,g2,b2) \
, mac_pack_color_word(O_(Poly_G4,c3), 0, r3,g3,b3)
/* Words: 3; Stores the 3 transformed (V2_S2 screen) vertices of the
* G4 triangle portion to p0/p1/p2. Call BEFORE the V3-RTPS, otherwise
* SXY0/SXY1/SXY2 get overwritten by the perspective transform. */
#define mac_gte_store_g4_tri() \
gte_sw(C2_SXY0, R_PrimCursor, O_(Poly_G4,p0)) \
, gte_sw(C2_SXY1, R_PrimCursor, O_(Poly_G4,p1)) \
, gte_sw(C2_SXY2, R_PrimCursor, O_(Poly_G4,p2))
#pragma endregion Macro Atom Components
#pragma region Mips Atom Builder