glsl_types.cpp revision 0a163cf56d1e412629cb802480998a982a47bb3c
1/* 2 * Copyright © 2009 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24#include <stdio.h> 25#include <stdlib.h> 26#include "main/core.h" /* for Elements */ 27#include "glsl_symbol_table.h" 28#include "glsl_parser_extras.h" 29#include "glsl_types.h" 30#include "builtin_types.h" 31extern "C" { 32#include "program/hash_table.h" 33} 34 35hash_table *glsl_type::array_types = NULL; 36hash_table *glsl_type::record_types = NULL; 37void *glsl_type::mem_ctx = NULL; 38 39void 40glsl_type::init_ralloc_type_ctx(void) 41{ 42 if (glsl_type::mem_ctx == NULL) { 43 glsl_type::mem_ctx = ralloc_autofree_context(); 44 assert(glsl_type::mem_ctx != NULL); 45 } 46} 47 48glsl_type::glsl_type(GLenum gl_type, 49 glsl_base_type base_type, unsigned vector_elements, 50 unsigned matrix_columns, const char *name) : 51 gl_type(gl_type), 52 base_type(base_type), 53 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 54 sampler_type(0), 55 vector_elements(vector_elements), matrix_columns(matrix_columns), 56 length(0) 57{ 58 init_ralloc_type_ctx(); 59 this->name = ralloc_strdup(this->mem_ctx, name); 60 /* Neither dimension is zero or both dimensions are zero. 61 */ 62 assert((vector_elements == 0) == (matrix_columns == 0)); 63 memset(& fields, 0, sizeof(fields)); 64} 65 66glsl_type::glsl_type(GLenum gl_type, 67 enum glsl_sampler_dim dim, bool shadow, bool array, 68 unsigned type, const char *name) : 69 gl_type(gl_type), 70 base_type(GLSL_TYPE_SAMPLER), 71 sampler_dimensionality(dim), sampler_shadow(shadow), 72 sampler_array(array), sampler_type(type), 73 vector_elements(0), matrix_columns(0), 74 length(0) 75{ 76 init_ralloc_type_ctx(); 77 this->name = ralloc_strdup(this->mem_ctx, name); 78 memset(& fields, 0, sizeof(fields)); 79} 80 81glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields, 82 const char *name) : 83 base_type(GLSL_TYPE_STRUCT), 84 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 85 sampler_type(0), 86 vector_elements(0), matrix_columns(0), 87 length(num_fields) 88{ 89 unsigned int i; 90 91 init_ralloc_type_ctx(); 92 this->name = ralloc_strdup(this->mem_ctx, name); 93 this->fields.structure = ralloc_array(this->mem_ctx, 94 glsl_struct_field, length); 95 for (i = 0; i < length; i++) { 96 this->fields.structure[i].type = fields[i].type; 97 this->fields.structure[i].name = ralloc_strdup(this->fields.structure, 98 fields[i].name); 99 } 100} 101 102static void 103add_types_to_symbol_table(glsl_symbol_table *symtab, 104 const struct glsl_type *types, 105 unsigned num_types, bool warn) 106{ 107 (void) warn; 108 109 for (unsigned i = 0; i < num_types; i++) { 110 symtab->add_type(types[i].name, & types[i]); 111 } 112} 113 114void 115glsl_type::generate_100ES_types(glsl_symbol_table *symtab) 116{ 117 add_types_to_symbol_table(symtab, builtin_core_types, 118 Elements(builtin_core_types), 119 false); 120 add_types_to_symbol_table(symtab, builtin_structure_types, 121 Elements(builtin_structure_types), 122 false); 123 add_types_to_symbol_table(symtab, void_type, 1, false); 124} 125 126void 127glsl_type::generate_110_types(glsl_symbol_table *symtab) 128{ 129 generate_100ES_types(symtab); 130 131 add_types_to_symbol_table(symtab, builtin_110_types, 132 Elements(builtin_110_types), 133 false); 134 add_types_to_symbol_table(symtab, &_sampler3D_type, 1, false); 135 add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types, 136 Elements(builtin_110_deprecated_structure_types), 137 false); 138} 139 140 141void 142glsl_type::generate_120_types(glsl_symbol_table *symtab) 143{ 144 generate_110_types(symtab); 145 146 add_types_to_symbol_table(symtab, builtin_120_types, 147 Elements(builtin_120_types), false); 148} 149 150 151void 152glsl_type::generate_130_types(glsl_symbol_table *symtab) 153{ 154 generate_120_types(symtab); 155 156 add_types_to_symbol_table(symtab, builtin_130_types, 157 Elements(builtin_130_types), false); 158 generate_EXT_texture_array_types(symtab, false); 159} 160 161 162void 163glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab, 164 bool warn) 165{ 166 add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types, 167 Elements(builtin_ARB_texture_rectangle_types), 168 warn); 169} 170 171 172void 173glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab, 174 bool warn) 175{ 176 add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types, 177 Elements(builtin_EXT_texture_array_types), 178 warn); 179} 180 181 182void 183glsl_type::generate_OES_texture_3D_types(glsl_symbol_table *symtab, bool warn) 184{ 185 add_types_to_symbol_table(symtab, &_sampler3D_type, 1, warn); 186} 187 188 189void 190_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state) 191{ 192 switch (state->language_version) { 193 case 100: 194 assert(state->es_shader); 195 glsl_type::generate_100ES_types(state->symbols); 196 break; 197 case 110: 198 glsl_type::generate_110_types(state->symbols); 199 break; 200 case 120: 201 glsl_type::generate_120_types(state->symbols); 202 break; 203 case 130: 204 glsl_type::generate_130_types(state->symbols); 205 break; 206 default: 207 /* error */ 208 break; 209 } 210 211 if (state->ARB_texture_rectangle_enable) { 212 glsl_type::generate_ARB_texture_rectangle_types(state->symbols, 213 state->ARB_texture_rectangle_warn); 214 } 215 if (state->OES_texture_3D_enable && state->language_version == 100) { 216 glsl_type::generate_OES_texture_3D_types(state->symbols, 217 state->OES_texture_3D_warn); 218 } 219 220 if (state->EXT_texture_array_enable && state->language_version < 130) { 221 // These are already included in 130; don't create twice. 222 glsl_type::generate_EXT_texture_array_types(state->symbols, 223 state->EXT_texture_array_warn); 224 } 225} 226 227 228const glsl_type *glsl_type::get_base_type() const 229{ 230 switch (base_type) { 231 case GLSL_TYPE_UINT: 232 return uint_type; 233 case GLSL_TYPE_INT: 234 return int_type; 235 case GLSL_TYPE_FLOAT: 236 return float_type; 237 case GLSL_TYPE_BOOL: 238 return bool_type; 239 default: 240 return error_type; 241 } 242} 243 244 245void 246_mesa_glsl_release_types(void) 247{ 248 if (glsl_type::array_types != NULL) { 249 hash_table_dtor(glsl_type::array_types); 250 glsl_type::array_types = NULL; 251 } 252 253 if (glsl_type::record_types != NULL) { 254 hash_table_dtor(glsl_type::record_types); 255 glsl_type::record_types = NULL; 256 } 257} 258 259 260glsl_type::glsl_type(const glsl_type *array, unsigned length) : 261 base_type(GLSL_TYPE_ARRAY), 262 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 263 sampler_type(0), 264 vector_elements(0), matrix_columns(0), 265 name(NULL), length(length) 266{ 267 this->fields.array = array; 268 /* Inherit the gl type of the base. The GL type is used for 269 * uniform/statevar handling in Mesa and the arrayness of the type 270 * is represented by the size rather than the type. 271 */ 272 this->gl_type = array->gl_type; 273 274 /* Allow a maximum of 10 characters for the array size. This is enough 275 * for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating 276 * NUL. 277 */ 278 const unsigned name_length = strlen(array->name) + 10 + 3; 279 char *const n = (char *) ralloc_size(this->mem_ctx, name_length); 280 281 if (length == 0) 282 snprintf(n, name_length, "%s[]", array->name); 283 else 284 snprintf(n, name_length, "%s[%u]", array->name, length); 285 286 this->name = n; 287} 288 289 290const glsl_type * 291glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns) 292{ 293 if (base_type == GLSL_TYPE_VOID) 294 return void_type; 295 296 if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4)) 297 return error_type; 298 299 /* Treat GLSL vectors as Nx1 matrices. 300 */ 301 if (columns == 1) { 302 switch (base_type) { 303 case GLSL_TYPE_UINT: 304 return uint_type + (rows - 1); 305 case GLSL_TYPE_INT: 306 return int_type + (rows - 1); 307 case GLSL_TYPE_FLOAT: 308 return float_type + (rows - 1); 309 case GLSL_TYPE_BOOL: 310 return bool_type + (rows - 1); 311 default: 312 return error_type; 313 } 314 } else { 315 if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1)) 316 return error_type; 317 318 /* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following 319 * combinations are valid: 320 * 321 * 1 2 3 4 322 * 1 323 * 2 x x x 324 * 3 x x x 325 * 4 x x x 326 */ 327#define IDX(c,r) (((c-1)*3) + (r-1)) 328 329 switch (IDX(columns, rows)) { 330 case IDX(2,2): return mat2_type; 331 case IDX(2,3): return mat2x3_type; 332 case IDX(2,4): return mat2x4_type; 333 case IDX(3,2): return mat3x2_type; 334 case IDX(3,3): return mat3_type; 335 case IDX(3,4): return mat3x4_type; 336 case IDX(4,2): return mat4x2_type; 337 case IDX(4,3): return mat4x3_type; 338 case IDX(4,4): return mat4_type; 339 default: return error_type; 340 } 341 } 342 343 assert(!"Should not get here."); 344 return error_type; 345} 346 347 348const glsl_type * 349glsl_type::get_array_instance(const glsl_type *base, unsigned array_size) 350{ 351 352 if (array_types == NULL) { 353 array_types = hash_table_ctor(64, hash_table_string_hash, 354 hash_table_string_compare); 355 } 356 357 /* Generate a name using the base type pointer in the key. This is 358 * done because the name of the base type may not be unique across 359 * shaders. For example, two shaders may have different record types 360 * named 'foo'. 361 */ 362 char key[128]; 363 snprintf(key, sizeof(key), "%p[%u]", (void *) base, array_size); 364 365 const glsl_type *t = (glsl_type *) hash_table_find(array_types, key); 366 if (t == NULL) { 367 t = new glsl_type(base, array_size); 368 369 hash_table_insert(array_types, (void *) t, ralloc_strdup(mem_ctx, key)); 370 } 371 372 assert(t->base_type == GLSL_TYPE_ARRAY); 373 assert(t->length == array_size); 374 assert(t->fields.array == base); 375 376 return t; 377} 378 379 380int 381glsl_type::record_key_compare(const void *a, const void *b) 382{ 383 const glsl_type *const key1 = (glsl_type *) a; 384 const glsl_type *const key2 = (glsl_type *) b; 385 386 /* Return zero is the types match (there is zero difference) or non-zero 387 * otherwise. 388 */ 389 if (strcmp(key1->name, key2->name) != 0) 390 return 1; 391 392 if (key1->length != key2->length) 393 return 1; 394 395 for (unsigned i = 0; i < key1->length; i++) { 396 if (key1->fields.structure[i].type != key2->fields.structure[i].type) 397 return 1; 398 if (strcmp(key1->fields.structure[i].name, 399 key2->fields.structure[i].name) != 0) 400 return 1; 401 } 402 403 return 0; 404} 405 406 407unsigned 408glsl_type::record_key_hash(const void *a) 409{ 410 const glsl_type *const key = (glsl_type *) a; 411 char hash_key[128]; 412 unsigned size = 0; 413 414 size = snprintf(hash_key, sizeof(hash_key), "%08x", key->length); 415 416 for (unsigned i = 0; i < key->length; i++) { 417 if (size >= sizeof(hash_key)) 418 break; 419 420 size += snprintf(& hash_key[size], sizeof(hash_key) - size, 421 "%p", (void *) key->fields.structure[i].type); 422 } 423 424 return hash_table_string_hash(& hash_key); 425} 426 427 428const glsl_type * 429glsl_type::get_record_instance(const glsl_struct_field *fields, 430 unsigned num_fields, 431 const char *name) 432{ 433 const glsl_type key(fields, num_fields, name); 434 435 if (record_types == NULL) { 436 record_types = hash_table_ctor(64, record_key_hash, record_key_compare); 437 } 438 439 const glsl_type *t = (glsl_type *) hash_table_find(record_types, & key); 440 if (t == NULL) { 441 t = new glsl_type(fields, num_fields, name); 442 443 hash_table_insert(record_types, (void *) t, t); 444 } 445 446 assert(t->base_type == GLSL_TYPE_STRUCT); 447 assert(t->length == num_fields); 448 assert(strcmp(t->name, name) == 0); 449 450 return t; 451} 452 453 454const glsl_type * 455glsl_type::field_type(const char *name) const 456{ 457 if (this->base_type != GLSL_TYPE_STRUCT) 458 return error_type; 459 460 for (unsigned i = 0; i < this->length; i++) { 461 if (strcmp(name, this->fields.structure[i].name) == 0) 462 return this->fields.structure[i].type; 463 } 464 465 return error_type; 466} 467 468 469int 470glsl_type::field_index(const char *name) const 471{ 472 if (this->base_type != GLSL_TYPE_STRUCT) 473 return -1; 474 475 for (unsigned i = 0; i < this->length; i++) { 476 if (strcmp(name, this->fields.structure[i].name) == 0) 477 return i; 478 } 479 480 return -1; 481} 482 483 484unsigned 485glsl_type::component_slots() const 486{ 487 switch (this->base_type) { 488 case GLSL_TYPE_UINT: 489 case GLSL_TYPE_INT: 490 case GLSL_TYPE_FLOAT: 491 case GLSL_TYPE_BOOL: 492 return this->components(); 493 494 case GLSL_TYPE_STRUCT: { 495 unsigned size = 0; 496 497 for (unsigned i = 0; i < this->length; i++) 498 size += this->fields.structure[i].type->component_slots(); 499 500 return size; 501 } 502 503 case GLSL_TYPE_ARRAY: 504 return this->length * this->fields.array->component_slots(); 505 506 default: 507 return 0; 508 } 509} 510