| 1 | /* |
| 2 | * Glide64 - Glide video plugin for Nintendo 64 emulators. |
| 3 | * Copyright (c) 2002 Dave2001 |
| 4 | * Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | //**************************************************************** |
| 22 | // |
| 23 | // Glide64 - Glide Plugin for Nintendo 64 emulators |
| 24 | // Project started on December 29th, 2001 |
| 25 | // |
| 26 | // Authors: |
| 27 | // Dave2001, original author, founded the project in 2001, left it in 2002 |
| 28 | // Gugaman, joined the project in 2002, left it in 2002 |
| 29 | // Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002 |
| 30 | // Hiroshi 'KoolSmoky' Morii, joined the project in 2007 |
| 31 | // |
| 32 | //**************************************************************** |
| 33 | // |
| 34 | // To modify Glide64: |
| 35 | // * Write your name and (optional)email, commented by your work, so I know who did it, and so that you can find which parts you modified when it comes time to send it to me. |
| 36 | // * Do NOT send me the whole project or file that you modified. Take out your modified code sections, and tell me where to put them. If people sent the whole thing, I would have many different versions, but no idea how to combine them all. |
| 37 | // |
| 38 | //**************************************************************** |
| 39 | |
| 40 | // |
| 41 | // vertex - loads vertices |
| 42 | // |
| 43 | |
| 44 | static void uc1_vertex() |
| 45 | { |
| 46 | Check_FrameSkip; |
| 47 | |
| 48 | int v0 = (rdp.cmd0 >> 17) & 0x7F; // Current vertex |
| 49 | int n = (rdp.cmd0 >> 10) & 0x3F; // Number to copy |
| 50 | rsp_vertex(v0, n); |
| 51 | } |
| 52 | |
| 53 | // |
| 54 | // tri1 - renders a triangle |
| 55 | // |
| 56 | |
| 57 | static void uc1_tri1() |
| 58 | { |
| 59 | Check_FrameSkip; |
| 60 | |
| 61 | if (rdp.skip_drawing) |
| 62 | { |
| 63 | LRDP("uc1:tri1. skipped\n"); |
| 64 | return; |
| 65 | } |
| 66 | FRDP("uc1:tri1 #%d - %d, %d, %d - %08lx - %08lx\n", rdp.tri_n, |
| 67 | ((rdp.cmd1 >> 17) & 0x7F), |
| 68 | ((rdp.cmd1 >> 9) & 0x7F), |
| 69 | ((rdp.cmd1 >> 1) & 0x7F), rdp.cmd0, rdp.cmd1); |
| 70 | |
| 71 | VERTEX *v[3] = { |
| 72 | &rdp.vtx[(rdp.cmd1 >> 17) & 0x7F], |
| 73 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F], |
| 74 | &rdp.vtx[(rdp.cmd1 >> 1) & 0x7F] |
| 75 | }; |
| 76 | |
| 77 | rsp_tri1(v); |
| 78 | } |
| 79 | |
| 80 | static void uc1_tri2 () |
| 81 | { |
| 82 | Check_FrameSkip; |
| 83 | |
| 84 | if (rdp.skip_drawing) |
| 85 | { |
| 86 | LRDP("uc1:tri2. skipped\n"); |
| 87 | return; |
| 88 | } |
| 89 | LRDP("uc1:tri2"); |
| 90 | |
| 91 | FRDP(" #%d, #%d - %d, %d, %d - %d, %d, %d\n", rdp.tri_n, rdp.tri_n+1, |
| 92 | ((rdp.cmd0 >> 17) & 0x7F), |
| 93 | ((rdp.cmd0 >> 9) & 0x7F), |
| 94 | ((rdp.cmd0 >> 1) & 0x7F), |
| 95 | ((rdp.cmd1 >> 17) & 0x7F), |
| 96 | ((rdp.cmd1 >> 9) & 0x7F), |
| 97 | ((rdp.cmd1 >> 1) & 0x7F)); |
| 98 | |
| 99 | VERTEX *v[6] = { |
| 100 | &rdp.vtx[(rdp.cmd0 >> 17) & 0x7F], |
| 101 | &rdp.vtx[(rdp.cmd0 >> 9) & 0x7F], |
| 102 | &rdp.vtx[(rdp.cmd0 >> 1) & 0x7F], |
| 103 | &rdp.vtx[(rdp.cmd1 >> 17) & 0x7F], |
| 104 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F], |
| 105 | &rdp.vtx[(rdp.cmd1 >> 1) & 0x7F] |
| 106 | }; |
| 107 | |
| 108 | rsp_tri2(v); |
| 109 | } |
| 110 | |
| 111 | static void uc1_line3d() |
| 112 | { |
| 113 | Check_FrameSkip; |
| 114 | |
| 115 | if (!settings.force_quad3d && ((rdp.cmd1&0xFF000000) == 0) && ((rdp.cmd0&0x00FFFFFF) == 0)) |
| 116 | { |
| 117 | wxUint16 width = (wxUint16)(rdp.cmd1&0xFF) + 3; |
| 118 | |
| 119 | FRDP("uc1:line3d width: %d #%d, #%d - %d, %d\n", width, rdp.tri_n, rdp.tri_n+1, |
| 120 | (rdp.cmd1 >> 17) & 0x7F, |
| 121 | (rdp.cmd1 >> 9) & 0x7F); |
| 122 | |
| 123 | VERTEX *v[3] = { |
| 124 | &rdp.vtx[(rdp.cmd1 >> 17) & 0x7F], |
| 125 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F], |
| 126 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F] |
| 127 | }; |
| 128 | wxUint32 cull_mode = (rdp.flags & CULLMASK) >> CULLSHIFT; |
| 129 | rdp.flags |= CULLMASK; |
| 130 | rdp.update |= UPDATE_CULL_MODE; |
| 131 | rsp_tri1(v, width); |
| 132 | rdp.flags ^= CULLMASK; |
| 133 | rdp.flags |= cull_mode << CULLSHIFT; |
| 134 | rdp.update |= UPDATE_CULL_MODE; |
| 135 | } |
| 136 | else |
| 137 | { |
| 138 | FRDP("uc1:quad3d #%d, #%d\n", rdp.tri_n, rdp.tri_n+1); |
| 139 | |
| 140 | VERTEX *v[6] = { |
| 141 | &rdp.vtx[(rdp.cmd1 >> 25) & 0x7F], |
| 142 | &rdp.vtx[(rdp.cmd1 >> 17) & 0x7F], |
| 143 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F], |
| 144 | &rdp.vtx[(rdp.cmd1 >> 1) & 0x7F], |
| 145 | &rdp.vtx[(rdp.cmd1 >> 25) & 0x7F], |
| 146 | &rdp.vtx[(rdp.cmd1 >> 9) & 0x7F] |
| 147 | }; |
| 148 | |
| 149 | rsp_tri2(v); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | wxUint32 branch_dl = 0; |
| 154 | |
| 155 | static void uc1_rdphalf_1() |
| 156 | { |
| 157 | LRDP("uc1:rdphalf_1\n"); |
| 158 | branch_dl = rdp.cmd1; |
| 159 | rdphalf_1(); |
| 160 | } |
| 161 | |
| 162 | static void uc1_branch_z() |
| 163 | { |
| 164 | wxUint32 addr = segoffset(branch_dl); |
| 165 | FRDP ("uc1:branch_less_z, addr: %08lx\n", addr); |
| 166 | wxUint32 vtx = (rdp.cmd0 & 0xFFF) >> 1; |
| 167 | if( fabs(rdp.vtx[vtx].z) <= (rdp.cmd1/*&0xFFFF*/) ) |
| 168 | { |
| 169 | rdp.pc[rdp.pc_i] = addr; |
| 170 | } |
| 171 | } |