mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-07-31 20:00:14 +00:00
WIP: still adjusting, deofuscating with annotation...
Problably will redesign the atom annotation DSL its too much curft rn, should be alot simpiler...
This commit is contained in:
@@ -5,7 +5,7 @@
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#pragma region hello_gte_tape
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// --- atom: floor_tri (32 words) ---
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// --- atom: floor_tri (51 words) ---
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#define _atom_offset_culling_floor_tri_exit 17
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#define _atom_offset_bounds_chk_floor_tri_exit 3
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+82
-74
@@ -96,6 +96,7 @@ typedef Struct_(Ent_Floor) {
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A2_V3_S2 faces;
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};
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enum { scratchpad_size = 1024, };
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typedef Struct_(SMemory) {
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DoubleBuffer screen_buf;
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A2_OrderingTable_Buffer ordering_tbl;
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@@ -107,14 +108,19 @@ typedef Struct_(SMemory) {
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Ent_Cube cube;
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Ent_Floor floor;
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U4_V scratchpad; // d-cache
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};
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global SMemory static_mem;
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extern SMemory static_mem;
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global SMemory smem;
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extern SMemory smem;
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// TODO(Ed):
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FI_ U4* spad_warm(MipsAtom atom) {
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return nullptr;
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}
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I_ B1* prim__alloc(U4 type_width, Str8 type_name) {
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gknown PrimitiveArena* pa = & static_mem.primitives;
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gknown B1* buf = (B1*) r_(static_mem.primitives.buf)[static_mem.active_buf_id];
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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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@@ -174,9 +180,9 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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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 = & static_mem.cube.pos;
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gknown V3_S4_R vel = & static_mem.cube.vel;
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gknown V3_S4_R acc = & static_mem.cube.accel;
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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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@@ -186,7 +192,7 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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// pos->y += vel->y;
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// pos->z += vel->z;
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if (pos->y + 150 > static_mem.floor.pos.y) vel->y *= -1;
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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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@@ -197,11 +203,11 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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// Draw Cube
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if (1)
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{
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m3s2_rotation (& static_mem.cube.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.cube.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.cube.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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m3s2_rotation (& smem.cube.rot, & smem.tform_world);
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m3s2_translation(& smem.tform_world, & smem.cube.pos);
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m3s2_scale (& smem.tform_world, & smem.cube.scale);
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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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for (U4 face_id = 0; face_id < Cube_num_faces; face_id += 1)
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{
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Poly_G4* quad = prim_alloc(Poly_G4); set_poly_g4(quad);
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@@ -210,11 +216,11 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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quad->c2 = rgb8( 0, 255, 255);
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quad->c3 = rgb8( 0, 255, 0);
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V4_S2* face = & static_mem.cube.faces[face_id];
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V3_S2* p0 = & static_mem.cube.verts[face->x];
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V3_S2* p1 = & static_mem.cube.verts[face->y];
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V3_S2* p2 = & static_mem.cube.verts[face->z];
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V3_S2* p3 = & static_mem.cube.verts[face->w];
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V4_S2* face = & smem.cube.faces[face_id];
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V3_S2* p0 = & smem.cube.verts[face->x];
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V3_S2* p1 = & smem.cube.verts[face->y];
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V3_S2* p2 = & smem.cube.verts[face->z];
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V3_S2* p3 = & smem.cube.verts[face->w];
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nclip = rtp_avg_nclip_a4_v3s2(
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p0, p1, p2, p3,
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@@ -229,29 +235,29 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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orderingtbl_add_primitive(ordering_buf[orderingtbl_z], quad);
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}
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}
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// static_mem.cube.rot.x += 6;
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// static_mem.cube.rot.y += 8;
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// static_mem.cube.rot.z += 12;
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static_mem.cube.rot.y += 30;
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// smem.cube.rot.x += 6;
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// smem.cube.rot.y += 8;
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// smem.cube.rot.z += 12;
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smem.cube.rot.y += 30;
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}
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// Draw cube (tape method) - two triangles per face
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if (0)
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{
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m3s2_rotation (& static_mem.cube.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.cube.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.cube.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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m3s2_rotation (& smem.cube.rot, & smem.tform_world);
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m3s2_translation(& smem.tform_world, & smem.cube.pos);
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m3s2_scale (& smem.tform_world, & smem.cube.scale);
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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[static_mem.active_buf_id]);
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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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LP_ U4 mem_temp_tape[512]; FArena tape_arena; farena_init(& tape_arena, slice_ut_arr(mem_temp_tape));
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TapeBuilder tb = tb_make_old(&tape_arena); tb_scope(& tb) {
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tb_emit(& tb, code_rbind_cube_tri);
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tb_data(& tb, prim_cursor);
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tb_data(& tb, u4_(static_mem.cube.faces));
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tb_data(& tb, u4_(static_mem.cube.verts));
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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++) {
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@@ -265,25 +271,25 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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}
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tape_run(tb_slice(tb));
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static_mem.cube.rot.y += 30;
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smem.cube.rot.y += 30;
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}
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// Draw Floor
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if (0)
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{
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m3s2_rotation (& static_mem.floor.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.floor.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.floor.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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m3s2_rotation (& smem.floor.rot, & smem.tform_world);
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m3s2_translation(& smem.tform_world, & smem.floor.pos);
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m3s2_scale (& smem.tform_world, & smem.floor.scale);
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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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for (U4 face_id = 0; face_id < Floor_num_faces; face_id += 1)
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{
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Poly_F3* tri = prim_alloc(Poly_F3); set_poly_f3(tri);
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tri->color = rgb8(255, 255, 255);
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V3_S2* face = & static_mem.floor.faces[face_id];
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register V3_S2* p0 rgcc(R_T4) = & static_mem.floor.verts[face->x];
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register V3_S2* p1 rgcc(R_T5) = & static_mem.floor.verts[face->y];
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register V3_S2* p2 rgcc(R_T6) = & static_mem.floor.verts[face->z];
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V3_S2* face = & smem.floor.faces[face_id];
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register V3_S2* p0 rgcc(R_T4) = & smem.floor.verts[face->x];
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register V3_S2* p1 rgcc(R_T5) = & smem.floor.verts[face->y];
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register V3_S2* p2 rgcc(R_T6) = & smem.floor.verts[face->z];
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// Three independent bases — full register discretion at the call site
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gte_load_v0(p0, R_T4);
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@@ -320,48 +326,49 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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}
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}
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}
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static_mem.floor.rot.y += 5;
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smem.floor.rot.y += 5;
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}
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// Draw floor tape method
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if (1)
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{
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m3s2_rotation (& static_mem.floor.rot, & static_mem.tform_world);
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m3s2_translation(& static_mem.tform_world, & static_mem.floor.pos);
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m3s2_scale (& static_mem.tform_world, & static_mem.floor.scale);
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gte_matrix_set_rotation (& static_mem.tform_world);
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gte_matrix_set_translation(& static_mem.tform_world);
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m3s2_rotation (& smem.floor.rot, & smem.tform_world);
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m3s2_translation(& smem.tform_world, & smem.floor.pos);
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m3s2_scale (& smem.tform_world, & smem.floor.scale);
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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[static_mem.active_buf_id]);
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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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// Prepare the tape.
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// TODO(Ed): We should do a bounds check beforehand to confirm pa can hold all tris.
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// The tape atoms in-flight should not need to care.
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// Prepare the tape. (Push protocol to tape)
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LP_ U4 mem_temp_tape[512];
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TapeBuilder tb = tb_make(slice_ut_arr(mem_temp_tape)); tb_scope(& tb) {
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// Push "Protocol" to tape
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// TODO(Ed): This is bugged.
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// tb_emit(& tb, code_set_gte_world);
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// tb_data(& tb, u4_(& smem.tform_world));
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tb_emit(& tb, code_rbind_floor_tri);
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// TODO(Ed): Just use a single context struct ref
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tb_data(& tb, prim_cursor);
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tb_data(& tb, u4_(static_mem.floor.faces));
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tb_data(& tb, u4_(static_mem.floor.verts));
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tb_data(& tb, u4_(smem.floor.faces));
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tb_data(& tb, u4_(smem.floor.verts));
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tb_data(& tb, u4_(ordering_buf));
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tb_emit(& tb, code_set_gte_world);
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tb_data(& tb, u4_(& static_mem.tform_world));
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for (U4 i = 0; i < Floor_num_faces; i++) {
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tb_emit(& tb, code_floor_tri);
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}
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// After code_floor_tri iterations complete, the primitive arena's used counter is wrong.
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// After code_floor_tri iterations complete, the primitive arena's used counter needs updating.
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tb_emit(& tb, code_sync_primitive_arena);
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tb_data(& tb, u4_(& pa->used));
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tb_data(& tb, prim_base);
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}
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// Fire off the tape.
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tape_run(tb_slice(tb));
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tape_run(tb_slice(tb));// Fire off the tape.
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// C-side state (pa->used) has already been updated by the tape!
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static_mem.floor.rot.y += 5;
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smem.floor.rot.y += 5;
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}
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// --- TAPE DIAGNOSTICS ---
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if (0)
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@@ -381,40 +388,41 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
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// tb_emit(& tb, code_diag_gte);
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}
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}
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B1* prim_cursor = (B1*)r_(pa->buf)[static_mem.active_buf_id] + pa->used;
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B1* prim_cursor = (B1*)r_(pa->buf)[smem.active_buf_id] + pa->used;
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tape_run(tb_slice(tb));
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pa->used = (U4)prim_cursor - (U4)r_(pa->buf)[static_mem.active_buf_id];
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static_mem.floor.rot.y += 5;
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pa->used = (U4)prim_cursor - (U4)r_(pa->buf)[smem.active_buf_id];
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smem.floor.rot.y += 5;
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}
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}
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int main(void)
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{
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static_mem = (SMemory){0};
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static_mem.primitives.used = 0;
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ent_cube128_init(& static_mem.cube.verts, & static_mem.cube.faces); {
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Ent_Cube* cube = & static_mem.cube;
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smem = (SMemory){0};
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smem.scratchpad = C_(U4_V, 0x1F800000);
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smem.primitives.used = 0;
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ent_cube128_init(& smem.cube.verts, & smem.cube.faces); {
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Ent_Cube* cube = & smem.cube;
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cube->rot = v3s2(0, 0, 0);
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// cube->pos = v3s4(0, 0, 900);
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cube->scale = v3s4_fp_one();
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cube->accel = v3s4(0, 1, 0);
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cube->pos = v3s4(0, -400, 1800);
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}
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ent_floor_init(& static_mem.floor.verts, & static_mem.floor.faces); {
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Ent_Floor* floor = & static_mem.floor;
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ent_floor_init(& smem.floor.verts, & smem.floor.faces); {
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Ent_Floor* floor = & smem.floor;
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floor->rot = v3s2(0, 0, 0);
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floor->pos = v3s4(0, 450, 1800);
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floor->scale = v3s4_fp_one();
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}
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// gknown gp_screen_init();
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gp_screen_init_c11(& static_mem.screen_buf, & static_mem.active_buf_id);
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gp_screen_init_c11(& smem.screen_buf, & smem.active_buf_id);
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while (1) {
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gknown S4* active_buf_id = & static_mem.active_buf_id;
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gknown U4* ordering_buf = r_(static_mem.ordering_tbl)[active_buf_id[0]];
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gknown PrimitiveArena* pa = & static_mem.primitives;
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gknown S4* active_buf_id = & smem.active_buf_id;
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gknown U4* ordering_buf = r_(smem.ordering_tbl)[active_buf_id[0]];
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gknown PrimitiveArena* pa = & smem.primitives;
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update(pa, ordering_buf);
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render();
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gp_display_frame(& static_mem.screen_buf, active_buf_id, ordering_buf, pa);
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gp_display_frame(& smem.screen_buf, active_buf_id, ordering_buf, pa);
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};
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return 0;
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}
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+163
-28
@@ -23,6 +23,157 @@
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#pragma region Baked Atoms
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typedef Struct_(Binds_CubeTri) {
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U4 PrimCursor;
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U4 FaceCursor;
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U4 VertBase;
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U4 OtBase;
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};
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internal MipsAtom_(rbind_cube_tri) {
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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_1( R_TapePtr, S_(Binds_CubeTri)),
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// Note(Ed): This entire thing is argument shuffle?
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// TODO(Ed): Eliminate
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mac_yield()
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};
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/* ============================================================================
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* cube_tri — Draw one cube face (Gouraud-shaded quad) via the GTE tape pipeline
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* ============================================================================
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*
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* Reads 4 indices from R_FaceCur (V4_S2 = 8 bytes), loads 4 vertices into
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* the GTE, runs the PsyQ RotAverageNclip4 sequence, and renders a Poly_G4.
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*/
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atom_region (cube_tri, REGION_PRIM_ARENA)
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atom_group (cube_tri, GROUP_RENDER_PRIMS)
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atom_cadence (cube_tri, CADENCE_FRAME)
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atom_annot(cube_tri, phase_work,
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tape_regs(R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase),
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tape_regs(R_PrimCursor, R_FaceCursor))
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internal
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MipsAtom_(cube_tri) {
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/* ── 1. Load 4 face indices from R_FaceCur ──────────────────────────── */
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load_half_u(R_T0, R_FaceCursor, 0), /* T0 = face->x (vertex 0 index) */
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load_half_u(R_T1, R_FaceCursor, 2), /* T1 = face->y (vertex 1 index) */
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load_half_u(R_T2, R_FaceCursor, 4), /* T2 = face->z (vertex 2 index) */
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load_half_u(R_T3, R_FaceCursor, 6), /* T3 = face->w (vertex 3 index) */
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/* ── 2. Load V0, V1, V2 into GTE ────────────────────────────────────── */
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/* V0 = verts[face->x] */
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shift_ll(R_AT, R_T0, 3), add_u(R_AT, R_AT, R_VertBase),
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load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
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gte_mt(R_V0, C2_VXY0), gte_mt(R_V1, C2_VZ0),
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/* V1 = verts[face->y] */
|
||||
shift_ll(R_AT, R_T1, 3), add_u(R_AT, R_AT, R_VertBase),
|
||||
load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
|
||||
gte_mt(R_V0, C2_VXY1), gte_mt(R_V1, C2_VZ1),
|
||||
|
||||
/* V2 = verts[face->z] */
|
||||
shift_ll(R_AT, R_T2, 3), add_u(R_AT, R_AT, R_VertBase),
|
||||
load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
|
||||
gte_mt(R_V0, C2_VXY2), gte_mt(R_V1, C2_VZ2),
|
||||
|
||||
/* ── 3. RTPT — transforms V0/V1/V2 → SXY0/SXY1/SXY2 + SZ1/SZ2/SZ3 ─── */
|
||||
nop, nop, gte_cmdw_rtpt,
|
||||
|
||||
/* ── 4. NCLIP — backface culling on SXY0/SXY1/SXY2 (p0,p1,p2) ──────── */
|
||||
/* MUST be done BEFORE RTPS overwrites SXY0 with p3! */
|
||||
nop, nop, gte_cmdw_nclip,
|
||||
nop, nop,
|
||||
|
||||
/* ── 5. Cull check: skip format/insert if MAC0 ≤ 0 (backface) ───────── */
|
||||
gte_mf(R_T0, C2_MAC0),
|
||||
nop,
|
||||
branch_le_zero(R_T0, 49), /* Skip 49 if MAC0 ≤ 0 (backface) → cull */
|
||||
nop, /* BD slot */
|
||||
|
||||
/* ── 6. Store p0,p1,p2 to primitive buffer (BEFORE RTPS overwrites) ─── */
|
||||
store_word(R_0, R_PrimCursor, 0),
|
||||
|
||||
/* Word 1: c0 (BGR) + code = 0x38FF00FF (magenta, opcode 0x38) */
|
||||
load_ui(R_AT, 0x38FF), or_i(R_AT, R_AT, 0x00FF),
|
||||
store_word(R_AT, R_PrimCursor, 4),
|
||||
|
||||
/* Word 2: p0 = SXY0 (stored BEFORE RTPS overwrites it) */
|
||||
gte_sw(C2_SXY0, R_PrimCursor, 8),
|
||||
|
||||
/* Word 3: c1 (BGR) + pad = 0x0000FFFF (yellow) */
|
||||
load_ui(R_AT, 0x0000), or_i(R_AT, R_AT, 0xFFFF),
|
||||
store_word(R_AT, R_PrimCursor, 12),
|
||||
|
||||
/* Word 4: p1 = SXY1 */
|
||||
gte_sw(C2_SXY1, R_PrimCursor, 16),
|
||||
|
||||
/* Word 5: c2 (BGR) + pad = 0x00FFFF00 (cyan) */
|
||||
load_ui(R_AT, 0x00FF), or_i(R_AT, R_AT, 0xFF00),
|
||||
store_word(R_AT, R_PrimCursor, 20),
|
||||
|
||||
/* Word 6: p2 = SXY2 */
|
||||
gte_sw(C2_SXY2, R_PrimCursor, 24),
|
||||
|
||||
/* Word 7: c3 (BGR) + pad = 0x0000FF00 (green) */
|
||||
load_ui(R_AT, 0x0000), or_i(R_AT, R_AT, 0xFF00),
|
||||
store_word(R_AT, R_PrimCursor, 28),
|
||||
|
||||
/* ── 7. Load V3 = verts[face->w] into V0 ─────────────────────────────── */
|
||||
shift_ll(R_AT, R_T3, 3), add_u(R_AT, R_AT, R_VertBase),
|
||||
load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4),
|
||||
gte_mt(R_V0, C2_VXY0), gte_mt(R_V1, C2_VZ0),
|
||||
|
||||
/* ── 8. RTPS — transforms V0 (now V3) → SXY0 (p3) + SZ0 ─────────────── */
|
||||
nop, nop, gte_cmdw_rtps,
|
||||
|
||||
/* Word 8: p3 = SXY0 (written AFTER RTPS with V3's screen coords) */
|
||||
gte_sw(C2_SXY0, R_PrimCursor, 32),
|
||||
|
||||
/* ── 9. AVSZ4 — average Z from SZ0/SZ1/SZ2/SZ3 ────────────── */
|
||||
nop, nop, gte_cmdw_avsz4,
|
||||
nop, nop,
|
||||
gte_mf(R_T1, C2_OTZ),
|
||||
|
||||
/* ── 10. Bounds check OTZ < 2048 ─────────────────────────────────────── */
|
||||
add_ui( R_AT, R_0, 2048),
|
||||
slt_u( R_AT, R_T1, R_AT),
|
||||
branch_equal(R_AT, R_0, 13), /* Skip 13 → land at add_ui(R_FaceCur,...) */
|
||||
nop, /* BD slot */
|
||||
|
||||
/* ── 11. Insert into Ordering Table (length = 8 for Poly_G4) ─────────── */
|
||||
mac_insert_ot_tag(R_T1, 0x0800), /* 0x0800 = 8 << 8 = length 8 in tag */
|
||||
|
||||
/* ── 12. Advance cursors & yield ─────────────────────────────────────── */
|
||||
add_ui(R_PrimCursor, R_PrimCursor, 36), /* 9 words × 4 bytes */
|
||||
add_ui(R_FaceCursor, R_FaceCursor, 8), /* 4 × S2 = 8 bytes */
|
||||
mac_yield()
|
||||
};
|
||||
|
||||
typedef Struct_(Binds_FloorTri) {
|
||||
U4 PrimCursor;
|
||||
U4 FaceCursor;
|
||||
U4 VertBase;
|
||||
U4 OtBase;
|
||||
};
|
||||
atom_region(rbind_floor_tri, REGION_PRIM_ARENA)
|
||||
atom_group(rbind_floor_tri, GROUP_RENDER_FLOOR)
|
||||
atom_cadence(rbind_floor_tri, CADENCE_FRAME)
|
||||
atom_annot(rbind_floor_tri, phase_bind
|
||||
, atom_reads()
|
||||
, atom_writes(R_PrimCursor, R_FaceCursor, R_VertBase, R_OtBase))
|
||||
internal
|
||||
MipsAtom_(rbind_floor_tri) {
|
||||
/* Pop 4 arguments from the tape directly into the workspace registers */
|
||||
load_word(R_PrimCursor, R_TapePtr, O_(Binds_FloorTri,PrimCursor)),
|
||||
load_word(R_FaceCursor, R_TapePtr, O_(Binds_FloorTri,FaceCursor)),
|
||||
load_word(R_VertBase, R_TapePtr, O_(Binds_FloorTri,VertBase)),
|
||||
load_word(R_OtBase, R_TapePtr, O_(Binds_FloorTri,OtBase)),
|
||||
add_ui_1( R_TapePtr, S_(Binds_FloorTri)),
|
||||
mac_yield()
|
||||
};
|
||||
|
||||
atom_region( floor_tri, REGION_PRIM_ARENA)
|
||||
atom_group( floor_tri, GROUP_RENDER_FLOOR)
|
||||
atom_cadence(floor_tri, CADENCE_FRAME)
|
||||
@@ -31,54 +182,38 @@
|
||||
atom_writes(R_PrimCursor, R_FaceCursor))
|
||||
internal
|
||||
MipsAtom_(floor_tri) {
|
||||
// T0-T2 allocated
|
||||
mac_load_tri_indices(R_T0, R_T1, R_T2),
|
||||
// load_half_u(R_T0, R_FaceCur, 0 * S_(S2))
|
||||
// , load_half_u(R_T1, R_FaceCur, 1 * S_(S2))
|
||||
// , load_half_u(R_T2, R_FaceCur, 2 * S_(S2))
|
||||
// ,
|
||||
mac_load_tri_verts( R_T0, R_T1, R_T2),
|
||||
// shift_ll(R_AT, R_T0, 3), add_u(R_AT, R_AT, R_VertBase), load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4), gte_mt(R_V0, C2_VXY0), gte_mt(R_V1, C2_VZ0)
|
||||
// , shift_ll(R_AT, R_T1, 3), add_u(R_AT, R_AT, R_VertBase), load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4), gte_mt(R_V0, C2_VXY1), gte_mt(R_V1, C2_VZ1)
|
||||
// , shift_ll(R_AT, R_T2, 3), add_u(R_AT, R_AT, R_VertBase), load_word(R_V0, R_AT, 0), load_word(R_V1, R_AT, 4), gte_mt(R_V0, C2_VXY2), gte_mt(R_V1, C2_VZ2)
|
||||
// ,
|
||||
|
||||
/* 3. Execute Math */
|
||||
nop, nop, gte_cmdw_rotate_translate_perspective_triple,
|
||||
nop, nop, gte_cmdw_nclip,
|
||||
nop, nop,
|
||||
|
||||
/* 4. Culling (Branch forward if Backface) */
|
||||
/* Culling (Branch forward if Backface) */
|
||||
gte_mf(R_T0, C2_MAC0),
|
||||
nop, branch_le_zero(R_T0, atom_offset(culling, floor_tri_exit)),
|
||||
nop,
|
||||
|
||||
/* 5. Format Primitive */
|
||||
/* Format Primitive */
|
||||
mac_format_f3_color(0x20FF, 0xFFFF),
|
||||
mac_gte_store_f3(),
|
||||
|
||||
/* 6. Calculate Depth */
|
||||
/* Calculate Depth */
|
||||
nop, nop, gte_avg_sort_z3,
|
||||
nop, nop, gte_mf(R_T1, C2_OTZ),
|
||||
|
||||
/* 7. Bounds Check OTZ < 2048 (Branch forward to skip insertion) */
|
||||
/* Bounds Check OTZ < 2048 (Branch forward to skip insertion) */
|
||||
add_ui( R_AT, R_0, OrderingTbl_Len),
|
||||
slt_u( R_AT, R_T1, R_AT),
|
||||
branch_equal(R_AT, R_0, atom_offset(bounds_chk, floor_tri_exit)),
|
||||
nop,
|
||||
|
||||
/* 8. Insert into Ordering Table Linked List */
|
||||
/* Insert into Ordering Table Linked List */
|
||||
mac_insert_ot_tag(R_T1, 0x0400),
|
||||
add_ui_1(R_PrimCursor, S_(Poly_F3)), /* Advance Prim Cursor (5 words) */
|
||||
// Note(Ed): No bounds checking, should be checked before atom runs.
|
||||
// Note(Ed): No bounds checking, should be checked before atom runs.
|
||||
|
||||
/* 9. Advance Input Cursor & Yield (Both branch targets land here) */
|
||||
atom_label(floor_tri_exit)
|
||||
/* Advance Input Cursor & Yield (Both branch targets land here) */
|
||||
atom_label(floor_tri_exit)
|
||||
add_ui_1(R_FaceCursor, S_(S2) * 4), /* Advance Face Cursor (4 * S2 = 8 bytes) */
|
||||
mac_yield()
|
||||
};
|
||||
|
||||
typedef Struct_(Binds_SyncPrimitiveArena) { U4 PrimtiveArena_Used; U4 PrimtiveBase; };
|
||||
typedef Struct_(Binds_SyncPrimitiveArena) { U4 used; U4 cursor; };
|
||||
atom_region( sync_primitive_arena, REGION_PRIM_ARENA)
|
||||
atom_group( sync_primitive_arena, GROUP_RENDER_FLOOR)
|
||||
atom_cadence(sync_primitive_arena, CADENCE_FRAME)
|
||||
@@ -86,11 +221,11 @@ typedef Struct_(Binds_SyncPrimitiveArena) { U4 PrimtiveArena_Used; U4 PrimtiveBa
|
||||
atom_reads( R_TapePtr, R_PrimCursor),
|
||||
atom_writes(R_TapePtr))
|
||||
internal MipsAtom_(sync_primitive_arena) {
|
||||
load_word(R_AT, R_TapePtr, O_(Binds_SyncPrimitiveArena,PrimtiveArena_Used)),
|
||||
load_word(R_T0, R_TapePtr, O_(Binds_SyncPrimitiveArena,PrimtiveBase)),
|
||||
load_word(R_AT, R_TapePtr, O_(Binds_SyncPrimitiveArena,used)),
|
||||
load_word(R_T0, R_TapePtr, O_(Binds_SyncPrimitiveArena,cursor)),
|
||||
add_ui_1( R_TapePtr, S_(Binds_SyncPrimitiveArena)),
|
||||
/* Calculate byte offset and store directly back to RAM */
|
||||
sub_u( R_T0, R_PrimCursor, R_T0), // R_T0 = R_PrimCursor - prim-base
|
||||
sub_u( R_T0, R_PrimCursor, R_T0), // R_T0 = R_PrimCursor - binds.cursor
|
||||
store_word(R_T0, R_AT, 0), // R_AT[0] = R_T0
|
||||
mac_yield()
|
||||
};
|
||||
|
||||
Reference in New Issue
Block a user