| 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 | // Oct 2002 Created by Gonetz (Gonetz@ngs.ru) |
| 41 | // Info about this ucode is taken from TR64 OGL plugin. Thanks, Icepir8! |
| 42 | // Oct 2003 Modified by Gonetz (Gonetz@ngs.ru) |
| 43 | // Bugs fixed with help from glN64 sources. Thanks, Orkin! |
| 44 | //**************************************************************** |
| 45 | |
| 46 | wxUint32 pd_col_addr = 0; |
| 47 | |
| 48 | static void uc7_colorbase () |
| 49 | { |
| 50 | LRDP("uc7_colorbase\n"); |
| 51 | pd_col_addr = segoffset(rdp.cmd1); |
| 52 | } |
| 53 | |
| 54 | |
| 55 | typedef struct |
| 56 | { |
| 57 | short y; |
| 58 | short x; |
| 59 | wxUint16 idx; |
| 60 | |
| 61 | short z; |
| 62 | |
| 63 | short t; |
| 64 | short s; |
| 65 | |
| 66 | } vtx_uc7; |
| 67 | |
| 68 | static void uc7_vertex () |
| 69 | { |
| 70 | Check_FrameSkip; |
| 71 | |
| 72 | if (rdp.update & UPDATE_MULT_MAT) |
| 73 | { |
| 74 | rdp.update ^= UPDATE_MULT_MAT; |
| 75 | MulMatrices(rdp.model, rdp.proj, rdp.combined); |
| 76 | } |
| 77 | |
| 78 | // This is special, not handled in update() |
| 79 | if (rdp.update & UPDATE_LIGHTS) |
| 80 | { |
| 81 | rdp.update ^= UPDATE_LIGHTS; |
| 82 | |
| 83 | // Calculate light vectors |
| 84 | for (wxUint32 l=0; l<rdp.num_lights; l++) |
| 85 | { |
| 86 | InverseTransformVector(&rdp.light[l].dir_x, rdp.light_vector[l], rdp.model); |
| 87 | NormalizeVector (rdp.light_vector[l]); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | wxUint32 addr = segoffset(rdp.cmd1); |
| 92 | wxUint32 v0, i, n; |
| 93 | float x, y, z; |
| 94 | |
| 95 | rdp.v0 = v0 = (rdp.cmd0 & 0x0F0000) >> 16; |
| 96 | rdp.vn = n = ((rdp.cmd0 & 0xF00000) >> 20) + 1; |
| 97 | |
| 98 | FRDP ("uc7:vertex n: %d, v0: %d, from: %08lx\n", n, v0, addr); |
| 99 | |
| 100 | vtx_uc7 *vertex = (vtx_uc7 *)&gfx.RDRAM[addr]; |
| 101 | |
| 102 | for(i = 0; i < n; i++) |
| 103 | { |
| 104 | VERTEX *v = &rdp.vtx[v0 + i]; |
| 105 | x = (float)vertex->x; |
| 106 | y = (float)vertex->y; |
| 107 | z = (float)vertex->z; |
| 108 | v->flags = 0; |
| 109 | v->ou = (float)vertex->s; |
| 110 | v->ov = (float)vertex->t; |
| 111 | v->uv_scaled = 0; |
| 112 | |
| 113 | #ifdef EXTREME_LOGGING |
| 114 | // FRDP ("before: v%d - x: %f, y: %f, z: %f, flags: %04lx, ou: %f, ov: %f\n", i>>4, x, y, z, v->flags, v->ou, v->ov); |
| 115 | #endif |
| 116 | |
| 117 | v->x = x*rdp.combined[0][0] + y*rdp.combined[1][0] + z*rdp.combined[2][0] + rdp.combined[3][0]; |
| 118 | v->y = x*rdp.combined[0][1] + y*rdp.combined[1][1] + z*rdp.combined[2][1] + rdp.combined[3][1]; |
| 119 | v->z = x*rdp.combined[0][2] + y*rdp.combined[1][2] + z*rdp.combined[2][2] + rdp.combined[3][2]; |
| 120 | v->w = x*rdp.combined[0][3] + y*rdp.combined[1][3] + z*rdp.combined[2][3] + rdp.combined[3][3]; |
| 121 | |
| 122 | |
| 123 | if (fabs(v->w) < 0.001) v->w = 0.001f; |
| 124 | v->oow = 1.0f / v->w; |
| 125 | v->x_w = v->x * v->oow; |
| 126 | v->y_w = v->y * v->oow; |
| 127 | v->z_w = v->z * v->oow; |
| 128 | |
| 129 | v->uv_calculated = 0xFFFFFFFF; |
| 130 | v->screen_translated = 0; |
| 131 | |
| 132 | v->scr_off = 0; |
| 133 | if (v->x < -v->w) v->scr_off |= 1; |
| 134 | if (v->x > v->w) v->scr_off |= 2; |
| 135 | if (v->y < -v->w) v->scr_off |= 4; |
| 136 | if (v->y > v->w) v->scr_off |= 8; |
| 137 | if (v->w < 0.1f) v->scr_off |= 16; |
| 138 | |
| 139 | wxUint8 *color = &gfx.RDRAM[pd_col_addr + (vertex->idx & 0xff)]; |
| 140 | |
| 141 | v->a = color[0]; |
| 142 | CalculateFog (v); |
| 143 | |
| 144 | if (rdp.geom_mode & 0x00020000) |
| 145 | { |
| 146 | v->vec[0] = (char)color[3]; |
| 147 | v->vec[1] = (char)color[2]; |
| 148 | v->vec[2] = (char)color[1]; |
| 149 | |
| 150 | if (rdp.geom_mode & 0x80000) |
| 151 | { |
| 152 | calc_linear (v); |
| 153 | #ifdef EXTREME_LOGGING |
| 154 | FRDP ("calc linear: v%d - u: %f, v: %f\n", i>>4, v->ou, v->ov); |
| 155 | #endif |
| 156 | } |
| 157 | else if (rdp.geom_mode & 0x40000) |
| 158 | { |
| 159 | calc_sphere (v); |
| 160 | #ifdef EXTREME_LOGGING |
| 161 | FRDP ("calc sphere: v%d - u: %f, v: %f\n", i>>4, v->ou, v->ov); |
| 162 | #endif |
| 163 | } |
| 164 | |
| 165 | NormalizeVector (v->vec); |
| 166 | |
| 167 | calc_light (v); |
| 168 | } |
| 169 | else |
| 170 | { |
| 171 | v->r = color[3]; |
| 172 | v->g = color[2]; |
| 173 | v->b = color[1]; |
| 174 | } |
| 175 | #ifdef EXTREME_LOGGING |
| 176 | FRDP ("v%d - x: %f, y: %f, z: %f, w: %f, u: %f, v: %f\n", i>>4, v->x, v->y, v->z, v->w, v->ou, v->ov); |
| 177 | #endif |
| 178 | vertex++; |
| 179 | } |
| 180 | } |
| 181 | |