glsl_types.cpp revision efc15f862b08a9f035c06a79bc43848cca740372
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 <cstdio> 25#include <stdlib.h> 26#include "glsl_symbol_table.h" 27#include "glsl_parser_extras.h" 28#include "glsl_types.h" 29#include "builtin_types.h" 30extern "C" { 31#include "hash_table.h" 32} 33 34hash_table *glsl_type::array_types = NULL; 35hash_table *glsl_type::record_types = NULL; 36void *glsl_type::ctx = NULL; 37 38glsl_type::glsl_type(GLenum gl_type, 39 unsigned base_type, unsigned vector_elements, 40 unsigned matrix_columns, const char *name) : 41 gl_type(gl_type), 42 base_type(base_type), 43 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 44 sampler_type(0), 45 vector_elements(vector_elements), matrix_columns(matrix_columns), 46 name(name), 47 length(0) 48{ 49 /* Neither dimension is zero or both dimensions are zero. 50 */ 51 assert((vector_elements == 0) == (matrix_columns == 0)); 52 memset(& fields, 0, sizeof(fields)); 53} 54 55glsl_type::glsl_type(GLenum gl_type, 56 enum glsl_sampler_dim dim, bool shadow, bool array, 57 unsigned type, const char *name) : 58 gl_type(gl_type), 59 base_type(GLSL_TYPE_SAMPLER), 60 sampler_dimensionality(dim), sampler_shadow(shadow), 61 sampler_array(array), sampler_type(type), 62 vector_elements(0), matrix_columns(0), 63 name(name), 64 length(0) 65{ 66 memset(& fields, 0, sizeof(fields)); 67} 68 69glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields, 70 const char *name) : 71 base_type(GLSL_TYPE_STRUCT), 72 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 73 sampler_type(0), 74 vector_elements(0), matrix_columns(0), 75 name(name), 76 length(num_fields) 77{ 78 this->fields.structure = fields; 79} 80 81static void 82add_types_to_symbol_table(glsl_symbol_table *symtab, 83 const struct glsl_type *types, 84 unsigned num_types, bool warn) 85{ 86 (void) warn; 87 88 for (unsigned i = 0; i < num_types; i++) { 89 symtab->add_type(types[i].name, & types[i]); 90 } 91} 92 93 94void 95glsl_type::generate_110_types(glsl_symbol_table *symtab) 96{ 97 add_types_to_symbol_table(symtab, builtin_core_types, 98 Elements(builtin_core_types), 99 false); 100 add_types_to_symbol_table(symtab, builtin_structure_types, 101 Elements(builtin_structure_types), 102 false); 103 add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types, 104 Elements(builtin_110_deprecated_structure_types), 105 false); 106 add_types_to_symbol_table(symtab, & void_type, 1, false); 107} 108 109 110void 111glsl_type::generate_120_types(glsl_symbol_table *symtab) 112{ 113 generate_110_types(symtab); 114 115 add_types_to_symbol_table(symtab, builtin_120_types, 116 Elements(builtin_120_types), false); 117} 118 119 120void 121glsl_type::generate_130_types(glsl_symbol_table *symtab) 122{ 123 generate_120_types(symtab); 124 125 add_types_to_symbol_table(symtab, builtin_130_types, 126 Elements(builtin_130_types), false); 127} 128 129 130void 131glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab, 132 bool warn) 133{ 134 add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types, 135 Elements(builtin_ARB_texture_rectangle_types), 136 warn); 137} 138 139 140void 141glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab, 142 bool warn) 143{ 144 add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types, 145 Elements(builtin_EXT_texture_array_types), 146 warn); 147} 148 149 150void 151_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state) 152{ 153 switch (state->language_version) { 154 case 110: 155 glsl_type::generate_110_types(state->symbols); 156 break; 157 case 120: 158 glsl_type::generate_120_types(state->symbols); 159 break; 160 case 130: 161 glsl_type::generate_130_types(state->symbols); 162 break; 163 default: 164 /* error */ 165 break; 166 } 167 168 if (state->ARB_texture_rectangle_enable) { 169 glsl_type::generate_ARB_texture_rectangle_types(state->symbols, 170 state->ARB_texture_rectangle_warn); 171 } 172 173 if (state->EXT_texture_array_enable && state->language_version < 130) { 174 // These are already included in 130; don't create twice. 175 glsl_type::generate_EXT_texture_array_types(state->symbols, 176 state->EXT_texture_array_warn); 177 } 178} 179 180 181const glsl_type *glsl_type::get_base_type() const 182{ 183 switch (base_type) { 184 case GLSL_TYPE_UINT: 185 return uint_type; 186 case GLSL_TYPE_INT: 187 return int_type; 188 case GLSL_TYPE_FLOAT: 189 return float_type; 190 case GLSL_TYPE_BOOL: 191 return bool_type; 192 default: 193 return error_type; 194 } 195} 196 197 198void 199_mesa_glsl_release_types(void) 200{ 201 if (glsl_type::array_types != NULL) { 202 hash_table_dtor(glsl_type::array_types); 203 glsl_type::array_types = NULL; 204 } 205 206 if (glsl_type::record_types != NULL) { 207 hash_table_dtor(glsl_type::record_types); 208 glsl_type::record_types = NULL; 209 } 210 211 if (glsl_type::ctx != NULL) { 212 talloc_free(glsl_type::ctx); 213 glsl_type::ctx = NULL; 214 } 215} 216 217 218ir_function * 219glsl_type::generate_constructor(glsl_symbol_table *symtab) const 220{ 221 void *ctx = symtab; 222 223 /* Generate the function name and add it to the symbol table. 224 */ 225 ir_function *const f = new(ctx) ir_function(name); 226 227 bool added = symtab->add_function(name, f); 228 assert(added); 229 230 ir_function_signature *const sig = new(ctx) ir_function_signature(this); 231 f->add_signature(sig); 232 233 ir_variable **declarations = 234 (ir_variable **) malloc(sizeof(ir_variable *) * this->length); 235 for (unsigned i = 0; i < length; i++) { 236 char *const param_name = (char *) malloc(10); 237 238 snprintf(param_name, 10, "p%08X", i); 239 240 ir_variable *var = (this->base_type == GLSL_TYPE_ARRAY) 241 ? new(ctx) ir_variable(fields.array, param_name) 242 : new(ctx) ir_variable(fields.structure[i].type, param_name); 243 244 var->mode = ir_var_in; 245 declarations[i] = var; 246 sig->parameters.push_tail(var); 247 } 248 249 /* Generate the body of the constructor. The body assigns each of the 250 * parameters to a portion of a local variable called __retval that has 251 * the same type as the constructor. After initializing __retval, 252 * __retval is returned. 253 */ 254 ir_variable *retval = new(ctx) ir_variable(this, "__retval"); 255 sig->body.push_tail(retval); 256 257 for (unsigned i = 0; i < length; i++) { 258 ir_dereference *const lhs = (this->base_type == GLSL_TYPE_ARRAY) 259 ? (ir_dereference *) new(ctx) ir_dereference_array(retval, 260 new(ctx) ir_constant(i)) 261 : (ir_dereference *) new(ctx) ir_dereference_record(retval, 262 fields.structure[i].name); 263 264 ir_dereference *const rhs = new(ctx) ir_dereference_variable(declarations[i]); 265 ir_instruction *const assign = new(ctx) ir_assignment(lhs, rhs, NULL); 266 267 sig->body.push_tail(assign); 268 } 269 270 free(declarations); 271 272 ir_dereference *const retref = new(ctx) ir_dereference_variable(retval); 273 ir_instruction *const inst = new(ctx) ir_return(retref); 274 sig->body.push_tail(inst); 275 276 return f; 277} 278 279 280glsl_type::glsl_type(void *ctx, const glsl_type *array, unsigned length) : 281 base_type(GLSL_TYPE_ARRAY), 282 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 283 sampler_type(0), 284 vector_elements(0), matrix_columns(0), 285 name(NULL), length(length) 286{ 287 this->fields.array = array; 288 289 /* Allow a maximum of 10 characters for the array size. This is enough 290 * for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating 291 * NUL. 292 */ 293 const unsigned name_length = strlen(array->name) + 10 + 3; 294 char *const n = (char *) talloc_size(ctx, name_length); 295 296 if (length == 0) 297 snprintf(n, name_length, "%s[]", array->name); 298 else 299 snprintf(n, name_length, "%s[%u]", array->name, length); 300 301 this->name = n; 302} 303 304 305const glsl_type * 306glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns) 307{ 308 if (base_type == GLSL_TYPE_VOID) 309 return &void_type; 310 311 if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4)) 312 return error_type; 313 314 /* Treat GLSL vectors as Nx1 matrices. 315 */ 316 if (columns == 1) { 317 switch (base_type) { 318 case GLSL_TYPE_UINT: 319 return uint_type + (rows - 1); 320 case GLSL_TYPE_INT: 321 return int_type + (rows - 1); 322 case GLSL_TYPE_FLOAT: 323 return float_type + (rows - 1); 324 case GLSL_TYPE_BOOL: 325 return bool_type + (rows - 1); 326 default: 327 return error_type; 328 } 329 } else { 330 if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1)) 331 return error_type; 332 333 /* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following 334 * combinations are valid: 335 * 336 * 1 2 3 4 337 * 1 338 * 2 x x x 339 * 3 x x x 340 * 4 x x x 341 */ 342#define IDX(c,r) (((c-1)*3) + (r-1)) 343 344 switch (IDX(columns, rows)) { 345 case IDX(2,2): return mat2_type; 346 case IDX(2,3): return mat2x3_type; 347 case IDX(2,4): return mat2x4_type; 348 case IDX(3,2): return mat3x2_type; 349 case IDX(3,3): return mat3_type; 350 case IDX(3,4): return mat3x4_type; 351 case IDX(4,2): return mat4x2_type; 352 case IDX(4,3): return mat4x3_type; 353 case IDX(4,4): return mat4_type; 354 default: return error_type; 355 } 356 } 357 358 assert(!"Should not get here."); 359 return error_type; 360} 361 362 363int 364glsl_type::array_key_compare(const void *a, const void *b) 365{ 366 const glsl_type *const key1 = (glsl_type *) a; 367 const glsl_type *const key2 = (glsl_type *) b; 368 369 /* Return zero is the types match (there is zero difference) or non-zero 370 * otherwise. 371 */ 372 return ((key1->fields.array == key2->fields.array) 373 && (key1->length == key2->length)) ? 0 : 1; 374} 375 376 377unsigned 378glsl_type::array_key_hash(const void *a) 379{ 380 const glsl_type *const key = (glsl_type *) a; 381 382 const struct { 383 const glsl_type *t; 384 unsigned l; 385 char nul; 386 } hash_key = { 387 key->fields.array, 388 key->length, 389 '\0' 390 }; 391 392 return hash_table_string_hash(& hash_key); 393} 394 395 396const glsl_type * 397glsl_type::get_array_instance(void *ctx, const glsl_type *base, 398 unsigned array_size) 399{ 400 const glsl_type key(ctx, base, array_size); 401 402 if (array_types == NULL) { 403 array_types = hash_table_ctor(64, array_key_hash, array_key_compare); 404 } 405 406 const glsl_type *t = (glsl_type *) hash_table_find(array_types, & key); 407 if (t == NULL) { 408 t = new glsl_type(ctx, base, array_size); 409 410 hash_table_insert(array_types, (void *) t, t); 411 } 412 413 assert(t->base_type == GLSL_TYPE_ARRAY); 414 assert(t->length == array_size); 415 assert(t->fields.array == base); 416 417 return t; 418} 419 420 421int 422glsl_type::record_key_compare(const void *a, const void *b) 423{ 424 const glsl_type *const key1 = (glsl_type *) a; 425 const glsl_type *const key2 = (glsl_type *) b; 426 427 /* Return zero is the types match (there is zero difference) or non-zero 428 * otherwise. 429 */ 430 if (strcmp(key1->name, key2->name) != 0) 431 return 1; 432 433 if (key1->length != key2->length) 434 return 1; 435 436 for (unsigned i = 0; i < key1->length; i++) 437 /* FINISHME: Is the name of the structure field also significant? */ 438 if (key1->fields.structure[i].type != key2->fields.structure[i].type) 439 return 1; 440 441 return 0; 442} 443 444 445unsigned 446glsl_type::record_key_hash(const void *a) 447{ 448 const glsl_type *const key = (glsl_type *) a; 449 char hash_key[128]; 450 unsigned size = 0; 451 452 size = snprintf(hash_key, sizeof(hash_key), "%08x", key->length); 453 454 for (unsigned i = 0; i < key->length; i++) { 455 if (size >= sizeof(hash_key)) 456 break; 457 458 size += snprintf(& hash_key[size], sizeof(hash_key) - size, 459 "%p", key->fields.structure[i].type); 460 } 461 462 return hash_table_string_hash(& hash_key); 463} 464 465 466const glsl_type * 467glsl_type::get_record_instance(const glsl_struct_field *fields, 468 unsigned num_fields, 469 const char *name) 470{ 471 const glsl_type key(fields, num_fields, name); 472 473 if (record_types == NULL) { 474 record_types = hash_table_ctor(64, record_key_hash, record_key_compare); 475 } 476 477 const glsl_type *t = (glsl_type *) hash_table_find(record_types, & key); 478 if (t == NULL) { 479 t = new glsl_type(fields, num_fields, name); 480 481 hash_table_insert(record_types, (void *) t, t); 482 } 483 484 assert(t->base_type == GLSL_TYPE_STRUCT); 485 assert(t->length == num_fields); 486 assert(strcmp(t->name, name) == 0); 487 488 return t; 489} 490 491 492const glsl_type * 493glsl_type::field_type(const char *name) const 494{ 495 if (this->base_type != GLSL_TYPE_STRUCT) 496 return error_type; 497 498 for (unsigned i = 0; i < this->length; i++) { 499 if (strcmp(name, this->fields.structure[i].name) == 0) 500 return this->fields.structure[i].type; 501 } 502 503 return error_type; 504} 505 506 507int 508glsl_type::field_index(const char *name) const 509{ 510 if (this->base_type != GLSL_TYPE_STRUCT) 511 return -1; 512 513 for (unsigned i = 0; i < this->length; i++) { 514 if (strcmp(name, this->fields.structure[i].name) == 0) 515 return i; 516 } 517 518 return -1; 519} 520 521 522unsigned 523glsl_type::component_slots() const 524{ 525 switch (this->base_type) { 526 case GLSL_TYPE_UINT: 527 case GLSL_TYPE_INT: 528 case GLSL_TYPE_FLOAT: 529 case GLSL_TYPE_BOOL: 530 return this->components(); 531 532 case GLSL_TYPE_STRUCT: { 533 unsigned size = 0; 534 535 for (unsigned i = 0; i < this->length; i++) 536 size += this->fields.structure[i].type->component_slots(); 537 538 return size; 539 } 540 541 case GLSL_TYPE_ARRAY: 542 return this->length * this->fields.array->component_slots(); 543 544 default: 545 return 0; 546 } 547} 548