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 #include "compiler/shader_enums.h" 31 #include <stdint.h> 32 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 39 struct gl_context; 40 struct gl_constants; 41 struct gl_program_parameter_list; 42 43 44 /** 45 * Used for describing GL state referenced from inside ARB vertex and 46 * fragment programs. 47 * A string such as "state.light[0].ambient" gets translated into a 48 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ]. 49 * 50 * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should 51 * always be the array index. 52 */ 53 typedef enum gl_state_index_ { 54 STATE_NOT_STATE_VAR = 0, 55 56 STATE_MATERIAL, 57 58 STATE_LIGHT, /* One gl_light attribute. */ 59 STATE_LIGHT_ARRAY, /* Multiple gl_light attributes loaded at once. */ 60 STATE_LIGHT_ATTENUATION_ARRAY, 61 STATE_LIGHTMODEL_AMBIENT, 62 STATE_LIGHTMODEL_SCENECOLOR, 63 STATE_LIGHTPROD, 64 STATE_LIGHTPROD_ARRAY_FRONT, /* multiple lights, only front faces */ 65 STATE_LIGHTPROD_ARRAY_BACK, /* multiple lights, only back faces */ 66 STATE_LIGHTPROD_ARRAY_TWOSIDE, /* multiple lights, both sides */ 67 68 STATE_TEXGEN, 69 STATE_TEXENV_COLOR, 70 71 STATE_FOG_COLOR, 72 STATE_FOG_PARAMS, 73 74 STATE_CLIPPLANE, 75 76 STATE_POINT_SIZE, 77 STATE_POINT_ATTENUATION, 78 79 STATE_MODELVIEW_MATRIX, 80 STATE_MODELVIEW_MATRIX_INVERSE, 81 STATE_MODELVIEW_MATRIX_TRANSPOSE, 82 STATE_MODELVIEW_MATRIX_INVTRANS, 83 84 STATE_PROJECTION_MATRIX, 85 STATE_PROJECTION_MATRIX_INVERSE, 86 STATE_PROJECTION_MATRIX_TRANSPOSE, 87 STATE_PROJECTION_MATRIX_INVTRANS, 88 89 STATE_MVP_MATRIX, 90 STATE_MVP_MATRIX_INVERSE, 91 STATE_MVP_MATRIX_TRANSPOSE, 92 STATE_MVP_MATRIX_INVTRANS, 93 94 STATE_TEXTURE_MATRIX, 95 STATE_TEXTURE_MATRIX_INVERSE, 96 STATE_TEXTURE_MATRIX_TRANSPOSE, 97 STATE_TEXTURE_MATRIX_INVTRANS, 98 99 STATE_PROGRAM_MATRIX, 100 STATE_PROGRAM_MATRIX_INVERSE, 101 STATE_PROGRAM_MATRIX_TRANSPOSE, 102 STATE_PROGRAM_MATRIX_INVTRANS, 103 104 STATE_NUM_SAMPLES, /* An integer, not a float like the other state vars */ 105 106 STATE_DEPTH_RANGE, 107 108 STATE_FRAGMENT_PROGRAM_ENV, 109 STATE_FRAGMENT_PROGRAM_ENV_ARRAY, 110 STATE_FRAGMENT_PROGRAM_LOCAL, 111 STATE_FRAGMENT_PROGRAM_LOCAL_ARRAY, 112 STATE_VERTEX_PROGRAM_ENV, 113 STATE_VERTEX_PROGRAM_ENV_ARRAY, 114 STATE_VERTEX_PROGRAM_LOCAL, 115 STATE_VERTEX_PROGRAM_LOCAL_ARRAY, 116 117 STATE_NORMAL_SCALE_EYESPACE, 118 STATE_CURRENT_ATTRIB, /* ctx->Current vertex attrib value */ 119 STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED, /* ctx->Current vertex attrib value after passthrough vertex processing */ 120 STATE_NORMAL_SCALE, 121 STATE_FOG_PARAMS_OPTIMIZED, /* for faster fog calc */ 122 STATE_POINT_SIZE_CLAMPED, /* includes implementation dependent size clamp */ 123 STATE_LIGHT_SPOT_DIR_NORMALIZED, /* pre-normalized spot dir */ 124 STATE_LIGHT_POSITION, /* object vs eye space */ 125 STATE_LIGHT_POSITION_ARRAY, 126 STATE_LIGHT_POSITION_NORMALIZED, /* object vs eye space */ 127 STATE_LIGHT_POSITION_NORMALIZED_ARRAY, 128 STATE_LIGHT_HALF_VECTOR, /* object vs eye space */ 129 STATE_PT_SCALE, /**< Pixel transfer RGBA scale */ 130 STATE_PT_BIAS, /**< Pixel transfer RGBA bias */ 131 STATE_FB_SIZE, /**< (width-1, height-1, 0, 0) */ 132 STATE_FB_WPOS_Y_TRANSFORM, /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */ 133 STATE_FB_PNTC_Y_TRANSFORM, /**< (1, 0, 0, 0) if point origin is upper left, (-1, 1, 0, 0) otherwise */ 134 STATE_TCS_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TCS (integer) */ 135 STATE_TES_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TES (integer) */ 136 /** 137 * A single enum gl_blend_support_qualifier value representing the 138 * currently active advanced blending equation, or zero if disabled. 139 */ 140 STATE_ADVANCED_BLENDING_MODE, 141 STATE_ALPHA_REF, /* alpha-test reference value */ 142 STATE_CLIP_INTERNAL, /* similar to STATE_CLIPPLANE, but in clip-space */ 143 STATE_ATOMIC_COUNTER_OFFSET, /* the byte offset to add to atomic counter bindings */ 144 145 STATE_INTERNAL_DRIVER, /* first available state index for drivers (must be last) */ 146 147 148 /** All enums below don't occur in state[0]. **/ 149 150 /* These 8 enums must be in the same order as the gl_light union members, 151 * which should also match the order of gl_LightSource members. 152 */ 153 STATE_AMBIENT, 154 STATE_DIFFUSE, 155 STATE_SPECULAR, 156 STATE_POSITION, /**< xyzw = position */ 157 STATE_HALF_VECTOR, 158 STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */ 159 STATE_ATTENUATION, /**< xyz = attenuation, w = spot exponent */ 160 STATE_SPOT_CUTOFF, /**< x = cutoff, yzw = undefined */ 161 162 STATE_EMISSION, 163 STATE_SHININESS, 164 165 /* These 8 enums must be in the same order as the memory layout of 166 * gl_fixedfunc_texture_unit::EyePlane/ObjectPlane. 167 */ 168 STATE_TEXGEN_EYE_S, 169 STATE_TEXGEN_EYE_T, 170 STATE_TEXGEN_EYE_R, 171 STATE_TEXGEN_EYE_Q, 172 STATE_TEXGEN_OBJECT_S, 173 STATE_TEXGEN_OBJECT_T, 174 STATE_TEXGEN_OBJECT_R, 175 STATE_TEXGEN_OBJECT_Q, 176 } gl_state_index; 177 178 179 extern void 180 _mesa_load_state_parameters(struct gl_context *ctx, 181 struct gl_program_parameter_list *paramList); 182 183 extern void 184 _mesa_upload_state_parameters(struct gl_context *ctx, 185 struct gl_program_parameter_list *paramList, 186 uint32_t *dst); 187 188 extern void 189 _mesa_optimize_state_parameters(struct gl_constants *consts, 190 struct gl_program_parameter_list *list); 191 192 extern unsigned 193 _mesa_program_state_value_size(const gl_state_index16 state[STATE_LENGTH]); 194 195 extern GLbitfield 196 _mesa_program_state_flags(const gl_state_index16 state[STATE_LENGTH]); 197 198 199 extern char * 200 _mesa_program_state_string(const gl_state_index16 state[STATE_LENGTH]); 201 202 203 204 #ifdef __cplusplus 205 } 206 #endif 207 208 #endif /* PROG_STATEVARS_H */ 209