1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef PROG_STATEVARS_H 26 #define PROG_STATEVARS_H 27 28 29 #include "main/glheader.h" 30 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 37 struct gl_context; 38 struct gl_program_parameter_list; 39 40 /** 41 * Number of STATE_* values we need to address any GL state. 42 * Used to dimension arrays. 43 */ 44 #define STATE_LENGTH 5 45 46 47 /** 48 * Used for describing GL state referenced from inside ARB vertex and 49 * fragment programs. 50 * A string such as "state.light[0].ambient" gets translated into a 51 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ]. 52 * 53 * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should 54 * always be the array index. 55 */ 56 typedef enum gl_state_index_ { 57 STATE_MATERIAL = 100, /* start at 100 so small ints are seen as ints */ 58 59 STATE_LIGHT, 60 STATE_LIGHTMODEL_AMBIENT, 61 STATE_LIGHTMODEL_SCENECOLOR, 62 STATE_LIGHTPROD, 63 64 STATE_TEXGEN, 65 66 STATE_FOG_COLOR, 67 STATE_FOG_PARAMS, 68 69 STATE_CLIPPLANE, 70 71 STATE_POINT_SIZE, 72 STATE_POINT_ATTENUATION, 73 74 STATE_MODELVIEW_MATRIX, 75 STATE_PROJECTION_MATRIX, 76 STATE_MVP_MATRIX, 77 STATE_TEXTURE_MATRIX, 78 STATE_PROGRAM_MATRIX, 79 STATE_MATRIX_INVERSE, 80 STATE_MATRIX_TRANSPOSE, 81 STATE_MATRIX_INVTRANS, 82 83 STATE_AMBIENT, 84 STATE_DIFFUSE, 85 STATE_SPECULAR, 86 STATE_EMISSION, 87 STATE_SHININESS, 88 STATE_HALF_VECTOR, 89 90 STATE_POSITION, /**< xyzw = position */ 91 STATE_ATTENUATION, /**< xyz = attenuation, w = spot exponent */ 92 STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */ 93 STATE_SPOT_CUTOFF, /**< x = cutoff, yzw = undefined */ 94 95 STATE_TEXGEN_EYE_S, 96 STATE_TEXGEN_EYE_T, 97 STATE_TEXGEN_EYE_R, 98 STATE_TEXGEN_EYE_Q, 99 STATE_TEXGEN_OBJECT_S, 100 STATE_TEXGEN_OBJECT_T, 101 STATE_TEXGEN_OBJECT_R, 102 STATE_TEXGEN_OBJECT_Q, 103 104 STATE_TEXENV_COLOR, 105 106 STATE_NUM_SAMPLES, /* An integer, not a float like the other state vars */ 107 108 STATE_DEPTH_RANGE, 109 110 STATE_VERTEX_PROGRAM, 111 STATE_FRAGMENT_PROGRAM, 112 113 STATE_ENV, 114 STATE_LOCAL, 115 116 STATE_INTERNAL, /* Mesa additions */ 117 STATE_CURRENT_ATTRIB, /* ctx->Current vertex attrib value */ 118 STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED, /* ctx->Current vertex attrib value after passthrough vertex processing */ 119 STATE_NORMAL_SCALE, 120 STATE_FOG_PARAMS_OPTIMIZED, /* for faster fog calc */ 121 STATE_POINT_SIZE_CLAMPED, /* includes implementation dependent size clamp */ 122 STATE_LIGHT_SPOT_DIR_NORMALIZED, /* pre-normalized spot dir */ 123 STATE_LIGHT_POSITION, /* object vs eye space */ 124 STATE_LIGHT_POSITION_NORMALIZED, /* object vs eye space */ 125 STATE_LIGHT_HALF_VECTOR, /* object vs eye space */ 126 STATE_PT_SCALE, /**< Pixel transfer RGBA scale */ 127 STATE_PT_BIAS, /**< Pixel transfer RGBA bias */ 128 STATE_FB_SIZE, /**< (width-1, height-1, 0, 0) */ 129 STATE_FB_WPOS_Y_TRANSFORM, /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */ 130 STATE_TCS_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TCS (integer) */ 131 STATE_TES_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TES (integer) */ 132 /** 133 * A single enum gl_blend_support_qualifier value representing the 134 * currently active advanced blending equation, or zero if disabled. 135 */ 136 STATE_ADVANCED_BLENDING_MODE, 137 STATE_INTERNAL_DRIVER /* first available state index for drivers (must be last) */ 138 } gl_state_index; 139 140 141 142 extern void 143 _mesa_load_state_parameters(struct gl_context *ctx, 144 struct gl_program_parameter_list *paramList); 145 146 147 extern GLbitfield 148 _mesa_program_state_flags(const gl_state_index state[STATE_LENGTH]); 149 150 151 extern char * 152 _mesa_program_state_string(const gl_state_index state[STATE_LENGTH]); 153 154 155 156 #ifdef __cplusplus 157 } 158 #endif 159 160 #endif /* PROG_STATEVARS_H */ 161