| 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 | #ifndef Util_H |
| 41 | #define Util_H |
| 42 | |
| 43 | #define NOT_TMU0 0x00 |
| 44 | #define NOT_TMU1 0x01 |
| 45 | #define NOT_TMU2 0x02 |
| 46 | |
| 47 | void util_init (); |
| 48 | void render_tri (wxUint16 linew = 0); |
| 49 | |
| 50 | int cull_tri (VERTEX **v); |
| 51 | void draw_tri (VERTEX **v, wxUint16 linew = 0); |
| 52 | void do_triangle_stuff (wxUint16 linew = 0, int old_interpolate = TRUE); |
| 53 | void do_triangle_stuff_2 (wxUint16 linew = 0); |
| 54 | void add_tri (VERTEX *v, int n, int type); |
| 55 | void apply_shade_mods (VERTEX *v); |
| 56 | |
| 57 | void update (); |
| 58 | void update_scissor (); |
| 59 | |
| 60 | void set_message_combiner (); |
| 61 | |
| 62 | float ScaleZ(float z); |
| 63 | |
| 64 | // positional and texel coordinate clipping |
| 65 | #define CCLIP(ux,lx,ut,lt,uc,lc) \ |
| 66 | if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \ |
| 67 | if (ux < uc) { \ |
| 68 | float p = (uc-ux)/(lx-ux); \ |
| 69 | ut = p*(lt-ut)+ut; \ |
| 70 | ux = uc; \ |
| 71 | } \ |
| 72 | if (lx > lc) { \ |
| 73 | float p = (lc-ux)/(lx-ux); \ |
| 74 | lt = p*(lt-ut)+ut; \ |
| 75 | lx = lc; \ |
| 76 | } |
| 77 | |
| 78 | #define CCLIP2(ux,lx,ut,lt,un,ln,uc,lc) \ |
| 79 | if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \ |
| 80 | if (ux < uc) { \ |
| 81 | float p = (uc-ux)/(lx-ux); \ |
| 82 | ut = p*(lt-ut)+ut; \ |
| 83 | un = p*(ln-un)+un; \ |
| 84 | ux = uc; \ |
| 85 | } \ |
| 86 | if (lx > lc) { \ |
| 87 | float p = (lc-ux)/(lx-ux); \ |
| 88 | lt = p*(lt-ut)+ut; \ |
| 89 | ln = p*(ln-un)+un; \ |
| 90 | lx = lc; \ |
| 91 | } |
| 92 | |
| 93 | #if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) |
| 94 | #include <stdlib.h> |
| 95 | #define bswap32(x) _byteswap_ulong(x) |
| 96 | #else |
| 97 | static inline uint32_t bswap32(uint32_t val) |
| 98 | { |
| 99 | return (((val & 0xff000000) >> 24) | |
| 100 | ((val & 0x00ff0000) >> 8) | |
| 101 | ((val & 0x0000ff00) << 8) | |
| 102 | ((val & 0x000000ff) << 24)); |
| 103 | } |
| 104 | #endif |
| 105 | |
| 106 | #define ALOWORD(x) (*((uint16_t*)&(x))) // low word |
| 107 | |
| 108 | template<class T> static inline T __ROR__(T value, unsigned int count) |
| 109 | { |
| 110 | const unsigned int nbits = sizeof(T) * 8; |
| 111 | count %= nbits; |
| 112 | |
| 113 | T low = value << (nbits - count); |
| 114 | value >>= count; |
| 115 | value |= low; |
| 116 | return value; |
| 117 | } |
| 118 | |
| 119 | // rotate left |
| 120 | template<class T> static T __ROL__(T value, unsigned int count) |
| 121 | { |
| 122 | const unsigned int nbits = sizeof(T) * 8; |
| 123 | count %= nbits; |
| 124 | |
| 125 | T high = value >> (nbits - count); |
| 126 | value <<= count; |
| 127 | value |= high; |
| 128 | return value; |
| 129 | } |
| 130 | |
| 131 | #endif // ifndef Util_H |