98e75f2d |
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 | |