| 1 | /****************************************************************************** |
| 2 | * Arachnoid Graphics Plugin for Mupen64Plus |
| 3 | * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/ |
| 4 | * |
| 5 | * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | *****************************************************************************/ |
| 21 | |
| 22 | #ifndef COMBINER_STRUCTS_H_ |
| 23 | #define COMBINER_STRUCTS_H_ |
| 24 | |
| 25 | #include "m64p.h" |
| 26 | #include "OpenGL.h" |
| 27 | |
| 28 | // Internal combiner commands |
| 29 | #define LOAD 0 |
| 30 | #define SUB 1 |
| 31 | #define MUL 2 |
| 32 | #define ADD 3 |
| 33 | #define INTERPOLATE 4 |
| 34 | |
| 35 | // Internal generalized combiner inputs |
| 36 | |
| 37 | #define COMBINED 0 |
| 38 | #define TEXEL0 1 |
| 39 | #define TEXEL1 2 |
| 40 | #define PRIMITIVE 3 |
| 41 | #define SHADE 4 |
| 42 | #define ENVIRONMENT 5 |
| 43 | #define CENTER 6 |
| 44 | #define SCALE 7 |
| 45 | #define COMBINED_ALPHA 8 |
| 46 | #define TEXEL0_ALPHA 9 |
| 47 | #define TEXEL1_ALPHA 10 |
| 48 | #define PRIMITIVE_ALPHA 11 |
| 49 | #define SHADE_ALPHA 12 |
| 50 | #define ENV_ALPHA 13 |
| 51 | #define LOD_FRACTION 14 |
| 52 | #define PRIM_LOD_FRAC 15 |
| 53 | #define NOISE 16 |
| 54 | #define K4 17 |
| 55 | #define K5 18 |
| 56 | #define ONE 19 |
| 57 | #define ZERO 20 |
| 58 | |
| 59 | //* Combiner data |
| 60 | //! Defines how mux-values are coded. |
| 61 | //TODO: check this size against GCC when i'm awake |
| 62 | struct CombineData |
| 63 | { |
| 64 | union |
| 65 | { |
| 66 | struct |
| 67 | { |
| 68 | // muxs1 |
| 69 | unsigned aA1 : 3; |
| 70 | unsigned sbA1 : 3; |
| 71 | unsigned aRGB1 : 3; |
| 72 | unsigned aA0 : 3; |
| 73 | unsigned sbA0 : 3; |
| 74 | unsigned aRGB0 : 3; |
| 75 | unsigned mA1 : 3; |
| 76 | unsigned saA1 : 3; |
| 77 | unsigned sbRGB1 : 4; |
| 78 | unsigned sbRGB0 : 4; |
| 79 | |
| 80 | // muxs0 |
| 81 | unsigned mRGB1 : 5; |
| 82 | unsigned saRGB1 : 4; |
| 83 | unsigned mA0 : 3; |
| 84 | unsigned saA0 : 3; |
| 85 | unsigned mRGB0 : 5; |
| 86 | unsigned saRGB0 : 4; |
| 87 | }; |
| 88 | |
| 89 | struct |
| 90 | { |
| 91 | unsigned int muxs1, muxs0; |
| 92 | }; |
| 93 | |
| 94 | unsigned long long mux; |
| 95 | }; |
| 96 | }; |
| 97 | |
| 98 | //! Combiner operation |
| 99 | struct CombinerOp |
| 100 | { |
| 101 | int op; |
| 102 | int param1; |
| 103 | int param2; |
| 104 | int param3; |
| 105 | }; |
| 106 | |
| 107 | //! Combiner Stage with combiner operations |
| 108 | struct CombinerStage |
| 109 | { |
| 110 | int numOps; |
| 111 | CombinerOp op[6]; |
| 112 | }; |
| 113 | |
| 114 | //! Combiner with combiner stages |
| 115 | struct Combiner |
| 116 | { |
| 117 | int numStages; |
| 118 | CombinerStage stage[2]; |
| 119 | }; |
| 120 | |
| 121 | //! Combiner cycle |
| 122 | struct CombineCycle |
| 123 | { |
| 124 | int loadValue; //!< Load |
| 125 | int addValue; //!< Addition |
| 126 | int subValue; //!< Subract |
| 127 | int multValue; //!< Multiplication |
| 128 | }; |
| 129 | |
| 130 | |
| 131 | //***************************************************************************** |
| 132 | //! Texture Environment Combiner Argument |
| 133 | //! Difines a color source and mathimatical operation to be performed |
| 134 | //***************************************************************************** |
| 135 | struct TexEnvCombinerArg |
| 136 | { |
| 137 | GLenum source; |
| 138 | GLenum operand; |
| 139 | }; |
| 140 | |
| 141 | //***************************************************************************** |
| 142 | //! Texture Environment Combiner Stage |
| 143 | //***************************************************************************** |
| 144 | struct TexEnvCombinerStage |
| 145 | { |
| 146 | unsigned short constant; |
| 147 | bool used; |
| 148 | GLenum combine; |
| 149 | TexEnvCombinerArg arg0, arg1, arg2; |
| 150 | unsigned short outputTexture; |
| 151 | }; |
| 152 | |
| 153 | //***************************************************************************** |
| 154 | //* Texture Environment Combiner |
| 155 | //! Stores information how graphics API should combine colors and set |
| 156 | //! Texture environment. |
| 157 | //***************************************************************************** |
| 158 | struct TexEnvCombiner |
| 159 | { |
| 160 | bool usesT0, usesT1, usesNoise; |
| 161 | |
| 162 | GLint mode; |
| 163 | |
| 164 | unsigned short usedUnits; |
| 165 | |
| 166 | struct |
| 167 | { |
| 168 | unsigned short color, secondaryColor, alpha; |
| 169 | } vertex; |
| 170 | |
| 171 | TexEnvCombinerStage color[8]; |
| 172 | TexEnvCombinerStage alpha[8]; |
| 173 | }; |
| 174 | |
| 175 | #endif |