glsl_types.cpp revision 31bcce04b1f9c8c5e33370e26a3a9d6e60049aa8
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 36glsl_type::glsl_type(GLenum gl_type, 37 unsigned base_type, unsigned vector_elements, 38 unsigned matrix_columns, const char *name) : 39 gl_type(gl_type), 40 base_type(base_type), 41 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 42 sampler_type(0), 43 vector_elements(vector_elements), matrix_columns(matrix_columns), 44 name(name), 45 length(0) 46{ 47 /* Neither dimension is zero or both dimensions are zero. 48 */ 49 assert((vector_elements == 0) == (matrix_columns == 0)); 50 memset(& fields, 0, sizeof(fields)); 51} 52 53glsl_type::glsl_type(GLenum gl_type, 54 enum glsl_sampler_dim dim, bool shadow, bool array, 55 unsigned type, const char *name) : 56 gl_type(gl_type), 57 base_type(GLSL_TYPE_SAMPLER), 58 sampler_dimensionality(dim), sampler_shadow(shadow), 59 sampler_array(array), sampler_type(type), 60 vector_elements(0), matrix_columns(0), 61 name(name), 62 length(0) 63{ 64 memset(& fields, 0, sizeof(fields)); 65} 66 67static void 68add_types_to_symbol_table(glsl_symbol_table *symtab, 69 const struct glsl_type *types, 70 unsigned num_types, bool warn) 71{ 72 (void) warn; 73 74 for (unsigned i = 0; i < num_types; i++) { 75 symtab->add_type(types[i].name, & types[i]); 76 } 77} 78 79 80void 81glsl_type::generate_110_types(glsl_symbol_table *symtab) 82{ 83 add_types_to_symbol_table(symtab, builtin_core_types, 84 Elements(builtin_core_types), 85 false); 86 add_types_to_symbol_table(symtab, builtin_structure_types, 87 Elements(builtin_structure_types), 88 false); 89 add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types, 90 Elements(builtin_110_deprecated_structure_types), 91 false); 92 add_types_to_symbol_table(symtab, & void_type, 1, false); 93} 94 95 96void 97glsl_type::generate_120_types(glsl_symbol_table *symtab) 98{ 99 generate_110_types(symtab); 100 101 add_types_to_symbol_table(symtab, builtin_120_types, 102 Elements(builtin_120_types), false); 103} 104 105 106void 107glsl_type::generate_130_types(glsl_symbol_table *symtab) 108{ 109 generate_120_types(symtab); 110 111 add_types_to_symbol_table(symtab, builtin_130_types, 112 Elements(builtin_130_types), false); 113} 114 115 116void 117glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab, 118 bool warn) 119{ 120 add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types, 121 Elements(builtin_ARB_texture_rectangle_types), 122 warn); 123} 124 125 126void 127glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab, 128 bool warn) 129{ 130 add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types, 131 Elements(builtin_EXT_texture_array_types), 132 warn); 133} 134 135 136void 137_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state) 138{ 139 switch (state->language_version) { 140 case 110: 141 glsl_type::generate_110_types(state->symbols); 142 break; 143 case 120: 144 glsl_type::generate_120_types(state->symbols); 145 break; 146 case 130: 147 glsl_type::generate_130_types(state->symbols); 148 break; 149 default: 150 /* error */ 151 break; 152 } 153 154 if (state->ARB_texture_rectangle_enable) { 155 glsl_type::generate_ARB_texture_rectangle_types(state->symbols, 156 state->ARB_texture_rectangle_warn); 157 } 158 159 if (state->EXT_texture_array_enable && state->language_version < 130) { 160 // These are already included in 130; don't create twice. 161 glsl_type::generate_EXT_texture_array_types(state->symbols, 162 state->EXT_texture_array_warn); 163 } 164} 165 166 167const glsl_type *glsl_type::get_base_type() const 168{ 169 switch (base_type) { 170 case GLSL_TYPE_UINT: 171 return uint_type; 172 case GLSL_TYPE_INT: 173 return int_type; 174 case GLSL_TYPE_FLOAT: 175 return float_type; 176 case GLSL_TYPE_BOOL: 177 return bool_type; 178 default: 179 return error_type; 180 } 181} 182 183 184ir_function * 185glsl_type::generate_constructor(glsl_symbol_table *symtab) const 186{ 187 void *ctx = symtab; 188 189 /* Generate the function name and add it to the symbol table. 190 */ 191 ir_function *const f = new(ctx) ir_function(name); 192 193 bool added = symtab->add_function(name, f); 194 assert(added); 195 196 ir_function_signature *const sig = new(ctx) ir_function_signature(this); 197 f->add_signature(sig); 198 199 ir_variable **declarations = 200 (ir_variable **) malloc(sizeof(ir_variable *) * this->length); 201 for (unsigned i = 0; i < length; i++) { 202 char *const param_name = (char *) malloc(10); 203 204 snprintf(param_name, 10, "p%08X", i); 205 206 ir_variable *var = (this->base_type == GLSL_TYPE_ARRAY) 207 ? new(ctx) ir_variable(fields.array, param_name) 208 : new(ctx) ir_variable(fields.structure[i].type, param_name); 209 210 var->mode = ir_var_in; 211 declarations[i] = var; 212 sig->parameters.push_tail(var); 213 } 214 215 /* Generate the body of the constructor. The body assigns each of the 216 * parameters to a portion of a local variable called __retval that has 217 * the same type as the constructor. After initializing __retval, 218 * __retval is returned. 219 */ 220 ir_variable *retval = new(ctx) ir_variable(this, "__retval"); 221 sig->body.push_tail(retval); 222 223 for (unsigned i = 0; i < length; i++) { 224 ir_dereference *const lhs = (this->base_type == GLSL_TYPE_ARRAY) 225 ? (ir_dereference *) new(ctx) ir_dereference_array(retval, 226 new(ctx) ir_constant(i)) 227 : (ir_dereference *) new(ctx) ir_dereference_record(retval, 228 fields.structure[i].name); 229 230 ir_dereference *const rhs = new(ctx) ir_dereference_variable(declarations[i]); 231 ir_instruction *const assign = new(ctx) ir_assignment(lhs, rhs, NULL); 232 233 sig->body.push_tail(assign); 234 } 235 236 free(declarations); 237 238 ir_dereference *const retref = new(ctx) ir_dereference_variable(retval); 239 ir_instruction *const inst = new(ctx) ir_return(retref); 240 sig->body.push_tail(inst); 241 242 return f; 243} 244 245 246glsl_type::glsl_type(void *ctx, const glsl_type *array, unsigned length) : 247 base_type(GLSL_TYPE_ARRAY), 248 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0), 249 sampler_type(0), 250 vector_elements(0), matrix_columns(0), 251 name(NULL), length(length) 252{ 253 this->fields.array = array; 254 255 /* Allow a maximum of 10 characters for the array size. This is enough 256 * for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating 257 * NUL. 258 */ 259 const unsigned name_length = strlen(array->name) + 10 + 3; 260 char *const n = (char *) talloc_size(ctx, name_length); 261 262 if (length == 0) 263 snprintf(n, name_length, "%s[]", array->name); 264 else 265 snprintf(n, name_length, "%s[%u]", array->name, length); 266 267 this->name = n; 268} 269 270 271const glsl_type * 272glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns) 273{ 274 if (base_type == GLSL_TYPE_VOID) 275 return &void_type; 276 277 if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4)) 278 return error_type; 279 280 /* Treat GLSL vectors as Nx1 matrices. 281 */ 282 if (columns == 1) { 283 switch (base_type) { 284 case GLSL_TYPE_UINT: 285 return uint_type + (rows - 1); 286 case GLSL_TYPE_INT: 287 return int_type + (rows - 1); 288 case GLSL_TYPE_FLOAT: 289 return float_type + (rows - 1); 290 case GLSL_TYPE_BOOL: 291 return bool_type + (rows - 1); 292 default: 293 return error_type; 294 } 295 } else { 296 if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1)) 297 return error_type; 298 299 /* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following 300 * combinations are valid: 301 * 302 * 1 2 3 4 303 * 1 304 * 2 x x x 305 * 3 x x x 306 * 4 x x x 307 */ 308#define IDX(c,r) (((c-1)*3) + (r-1)) 309 310 switch (IDX(columns, rows)) { 311 case IDX(2,2): return mat2_type; 312 case IDX(2,3): return mat2x3_type; 313 case IDX(2,4): return mat2x4_type; 314 case IDX(3,2): return mat3x2_type; 315 case IDX(3,3): return mat3_type; 316 case IDX(3,4): return mat3x4_type; 317 case IDX(4,2): return mat4x2_type; 318 case IDX(4,3): return mat4x3_type; 319 case IDX(4,4): return mat4_type; 320 default: return error_type; 321 } 322 } 323 324 assert(!"Should not get here."); 325 return error_type; 326} 327 328 329int 330glsl_type::array_key_compare(const void *a, const void *b) 331{ 332 const glsl_type *const key1 = (glsl_type *) a; 333 const glsl_type *const key2 = (glsl_type *) b; 334 335 /* Return zero is the types match (there is zero difference) or non-zero 336 * otherwise. 337 */ 338 return ((key1->fields.array == key2->fields.array) 339 && (key1->length == key2->length)) ? 0 : 1; 340} 341 342 343unsigned 344glsl_type::array_key_hash(const void *a) 345{ 346 const glsl_type *const key = (glsl_type *) a; 347 348 const struct { 349 const glsl_type *t; 350 unsigned l; 351 char nul; 352 } hash_key = { 353 key->fields.array, 354 key->length, 355 '\0' 356 }; 357 358 return hash_table_string_hash(& hash_key); 359} 360 361 362const glsl_type * 363glsl_type::get_array_instance(void *ctx, const glsl_type *base, 364 unsigned array_size) 365{ 366 const glsl_type key(ctx, base, array_size); 367 368 if (array_types == NULL) { 369 array_types = hash_table_ctor(64, array_key_hash, array_key_compare); 370 } 371 372 const glsl_type *t = (glsl_type *) hash_table_find(array_types, & key); 373 if (t == NULL) { 374 t = new(ctx) glsl_type(ctx, base, array_size); 375 376 hash_table_insert(array_types, (void *) t, t); 377 } 378 379 assert(t->base_type == GLSL_TYPE_ARRAY); 380 assert(t->length == array_size); 381 assert(t->fields.array == base); 382 383 return t; 384} 385 386 387const glsl_type * 388glsl_type::field_type(const char *name) const 389{ 390 if (this->base_type != GLSL_TYPE_STRUCT) 391 return error_type; 392 393 for (unsigned i = 0; i < this->length; i++) { 394 if (strcmp(name, this->fields.structure[i].name) == 0) 395 return this->fields.structure[i].type; 396 } 397 398 return error_type; 399} 400 401 402int 403glsl_type::field_index(const char *name) const 404{ 405 if (this->base_type != GLSL_TYPE_STRUCT) 406 return -1; 407 408 for (unsigned i = 0; i < this->length; i++) { 409 if (strcmp(name, this->fields.structure[i].name) == 0) 410 return i; 411 } 412 413 return -1; 414} 415 416 417unsigned 418glsl_type::component_slots() const 419{ 420 switch (this->base_type) { 421 case GLSL_TYPE_UINT: 422 case GLSL_TYPE_INT: 423 case GLSL_TYPE_FLOAT: 424 case GLSL_TYPE_BOOL: 425 return this->components(); 426 427 case GLSL_TYPE_STRUCT: { 428 unsigned size = 0; 429 430 for (unsigned i = 0; i < this->length; i++) 431 size += this->fields.structure[i].type->component_slots(); 432 433 return size; 434 } 435 436 case GLSL_TYPE_ARRAY: 437 return this->length * this->fields.array->component_slots(); 438 439 default: 440 return 0; 441 } 442} 443