glsl_types.cpp revision e94642eb0d99ff7f6cdaee31ed4f5f29bdabd6f7
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; 35 36static void 37add_types_to_symbol_table(glsl_symbol_table *symtab, 38 const struct glsl_type *types, 39 unsigned num_types, bool warn) 40{ 41 (void) warn; 42 43 for (unsigned i = 0; i < num_types; i++) { 44 symtab->add_type(types[i].name, & types[i]); 45 } 46} 47 48 49void 50glsl_type::generate_110_types(glsl_symbol_table *symtab) 51{ 52 add_types_to_symbol_table(symtab, builtin_core_types, 53 Elements(builtin_core_types), 54 false); 55 add_types_to_symbol_table(symtab, builtin_structure_types, 56 Elements(builtin_structure_types), 57 false); 58 add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types, 59 Elements(builtin_110_deprecated_structure_types), 60 false); 61 add_types_to_symbol_table(symtab, & void_type, 1, false); 62} 63 64 65void 66glsl_type::generate_120_types(glsl_symbol_table *symtab) 67{ 68 generate_110_types(symtab); 69 70 add_types_to_symbol_table(symtab, builtin_120_types, 71 Elements(builtin_120_types), false); 72} 73 74 75void 76glsl_type::generate_130_types(glsl_symbol_table *symtab) 77{ 78 generate_120_types(symtab); 79 80 add_types_to_symbol_table(symtab, builtin_130_types, 81 Elements(builtin_130_types), false); 82} 83 84 85void 86glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab, 87 bool warn) 88{ 89 add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types, 90 Elements(builtin_ARB_texture_rectangle_types), 91 warn); 92} 93 94 95void 96glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab, 97 bool warn) 98{ 99 add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types, 100 Elements(builtin_EXT_texture_array_types), 101 warn); 102} 103 104 105void 106_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state) 107{ 108 switch (state->language_version) { 109 case 110: 110 glsl_type::generate_110_types(state->symbols); 111 break; 112 case 120: 113 glsl_type::generate_120_types(state->symbols); 114 break; 115 case 130: 116 glsl_type::generate_130_types(state->symbols); 117 break; 118 default: 119 /* error */ 120 break; 121 } 122 123 if (state->ARB_texture_rectangle_enable) { 124 glsl_type::generate_ARB_texture_rectangle_types(state->symbols, 125 state->ARB_texture_rectangle_warn); 126 } 127 128 if (state->EXT_texture_array_enable && state->language_version < 130) { 129 // These are already included in 130; don't create twice. 130 glsl_type::generate_EXT_texture_array_types(state->symbols, 131 state->EXT_texture_array_warn); 132 } 133} 134 135 136const glsl_type *glsl_type::get_base_type() const 137{ 138 switch (base_type) { 139 case GLSL_TYPE_UINT: 140 return uint_type; 141 case GLSL_TYPE_INT: 142 return int_type; 143 case GLSL_TYPE_FLOAT: 144 return float_type; 145 case GLSL_TYPE_BOOL: 146 return bool_type; 147 default: 148 return error_type; 149 } 150} 151 152 153ir_function * 154glsl_type::generate_constructor(glsl_symbol_table *symtab) const 155{ 156 void *ctx = symtab; 157 158 /* Generate the function name and add it to the symbol table. 159 */ 160 ir_function *const f = new(ctx) ir_function(name); 161 162 bool added = symtab->add_function(name, f); 163 assert(added); 164 165 ir_function_signature *const sig = new(ctx) ir_function_signature(this); 166 f->add_signature(sig); 167 168 ir_variable **declarations = 169 (ir_variable **) malloc(sizeof(ir_variable *) * this->length); 170 for (unsigned i = 0; i < length; i++) { 171 char *const param_name = (char *) malloc(10); 172 173 snprintf(param_name, 10, "p%08X", i); 174 175 ir_variable *var = (this->base_type == GLSL_TYPE_ARRAY) 176 ? new(ctx) ir_variable(fields.array, param_name) 177 : new(ctx) ir_variable(fields.structure[i].type, param_name); 178 179 var->mode = ir_var_in; 180 declarations[i] = var; 181 sig->parameters.push_tail(var); 182 } 183 184 /* Generate the body of the constructor. The body assigns each of the 185 * parameters to a portion of a local variable called __retval that has 186 * the same type as the constructor. After initializing __retval, 187 * __retval is returned. 188 */ 189 ir_variable *retval = new(ctx) ir_variable(this, "__retval"); 190 sig->body.push_tail(retval); 191 192 for (unsigned i = 0; i < length; i++) { 193 ir_dereference *const lhs = (this->base_type == GLSL_TYPE_ARRAY) 194 ? (ir_dereference *) new(ctx) ir_dereference_array(retval, 195 new(ctx) ir_constant(i)) 196 : (ir_dereference *) new(ctx) ir_dereference_record(retval, 197 fields.structure[i].name); 198 199 ir_dereference *const rhs = new(ctx) ir_dereference_variable(declarations[i]); 200 ir_instruction *const assign = new(ctx) ir_assignment(lhs, rhs, NULL); 201 202 sig->body.push_tail(assign); 203 } 204 205 free(declarations); 206 207 ir_dereference *const retref = new(ctx) ir_dereference_variable(retval); 208 ir_instruction *const inst = new(ctx) ir_return(retref); 209 sig->body.push_tail(inst); 210 211 return f; 212} 213 214 215glsl_type::glsl_type(void *ctx, const glsl_type *array, unsigned length) : 216 base_type(GLSL_TYPE_ARRAY), 217 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 218 sampler_type(0), 219 vector_elements(0), matrix_columns(0), 220 name(NULL), length(length) 221{ 222 this->fields.array = array; 223 224 /* Allow a maximum of 10 characters for the array size. This is enough 225 * for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating 226 * NUL. 227 */ 228 const unsigned name_length = strlen(array->name) + 10 + 3; 229 char *const n = (char *) talloc_size(ctx, name_length); 230 231 if (length == 0) 232 snprintf(n, name_length, "%s[]", array->name); 233 else 234 snprintf(n, name_length, "%s[%u]", array->name, length); 235 236 this->name = n; 237} 238 239 240const glsl_type * 241glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns) 242{ 243 if (base_type == GLSL_TYPE_VOID) 244 return &void_type; 245 246 if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4)) 247 return error_type; 248 249 /* Treat GLSL vectors as Nx1 matrices. 250 */ 251 if (columns == 1) { 252 switch (base_type) { 253 case GLSL_TYPE_UINT: 254 return uint_type + (rows - 1); 255 case GLSL_TYPE_INT: 256 return int_type + (rows - 1); 257 case GLSL_TYPE_FLOAT: 258 return float_type + (rows - 1); 259 case GLSL_TYPE_BOOL: 260 return bool_type + (rows - 1); 261 default: 262 return error_type; 263 } 264 } else { 265 if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1)) 266 return error_type; 267 268 /* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following 269 * combinations are valid: 270 * 271 * 1 2 3 4 272 * 1 273 * 2 x x x 274 * 3 x x x 275 * 4 x x x 276 */ 277#define IDX(c,r) (((c-1)*3) + (r-1)) 278 279 switch (IDX(columns, rows)) { 280 case IDX(2,2): return mat2_type; 281 case IDX(2,3): return mat2x3_type; 282 case IDX(2,4): return mat2x4_type; 283 case IDX(3,2): return mat3x2_type; 284 case IDX(3,3): return mat3_type; 285 case IDX(3,4): return mat3x4_type; 286 case IDX(4,2): return mat4x2_type; 287 case IDX(4,3): return mat4x3_type; 288 case IDX(4,4): return mat4_type; 289 default: return error_type; 290 } 291 } 292 293 assert(!"Should not get here."); 294 return error_type; 295} 296 297 298int 299glsl_type::array_key_compare(const void *a, const void *b) 300{ 301 const glsl_type *const key1 = (glsl_type *) a; 302 const glsl_type *const key2 = (glsl_type *) b; 303 304 /* Return zero is the types match (there is zero difference) or non-zero 305 * otherwise. 306 */ 307 return ((key1->fields.array == key2->fields.array) 308 && (key1->length == key2->length)) ? 0 : 1; 309} 310 311 312unsigned 313glsl_type::array_key_hash(const void *a) 314{ 315 const glsl_type *const key = (glsl_type *) a; 316 317 const struct { 318 const glsl_type *t; 319 unsigned l; 320 char nul; 321 } hash_key = { 322 key->fields.array, 323 key->length, 324 '\0' 325 }; 326 327 return hash_table_string_hash(& hash_key); 328} 329 330 331const glsl_type * 332glsl_type::get_array_instance(void *ctx, const glsl_type *base, 333 unsigned array_size) 334{ 335 const glsl_type key(ctx, base, array_size); 336 337 if (array_types == NULL) { 338 array_types = hash_table_ctor(64, array_key_hash, array_key_compare); 339 } 340 341 const glsl_type *t = (glsl_type *) hash_table_find(array_types, & key); 342 if (t == NULL) { 343 t = new(ctx) glsl_type(ctx, base, array_size); 344 345 hash_table_insert(array_types, (void *) t, t); 346 } 347 348 assert(t->base_type == GLSL_TYPE_ARRAY); 349 assert(t->length == array_size); 350 assert(t->fields.array == base); 351 352 return t; 353} 354 355 356const glsl_type * 357glsl_type::field_type(const char *name) const 358{ 359 if (this->base_type != GLSL_TYPE_STRUCT) 360 return error_type; 361 362 for (unsigned i = 0; i < this->length; i++) { 363 if (strcmp(name, this->fields.structure[i].name) == 0) 364 return this->fields.structure[i].type; 365 } 366 367 return error_type; 368} 369 370 371int 372glsl_type::field_index(const char *name) const 373{ 374 if (this->base_type != GLSL_TYPE_STRUCT) 375 return -1; 376 377 for (unsigned i = 0; i < this->length; i++) { 378 if (strcmp(name, this->fields.structure[i].name) == 0) 379 return i; 380 } 381 382 return -1; 383} 384 385 386unsigned 387glsl_type::component_slots() const 388{ 389 switch (this->base_type) { 390 case GLSL_TYPE_UINT: 391 case GLSL_TYPE_INT: 392 case GLSL_TYPE_FLOAT: 393 case GLSL_TYPE_BOOL: 394 return this->components(); 395 396 case GLSL_TYPE_STRUCT: { 397 unsigned size = 0; 398 399 for (unsigned i = 0; i < this->length; i++) 400 size += this->fields.structure[i].type->component_slots(); 401 402 return size; 403 } 404 405 case GLSL_TYPE_ARRAY: 406 return this->length * this->fields.array->component_slots(); 407 408 default: 409 return 0; 410 } 411} 412