src/glsl/ir_print_visitor.cpp

   1 /*
   2  * Copyright © 2010 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 "ir_print_visitor.h"
  25 #include "glsl_types.h"
  26 #include "glsl_parser_extras.h"
  27 #include "main/macros.h"
  28 #include "program/hash_table.h"
  29
  30 static void print_type(const glsl_type *t);
  31
  32 void
  33 ir_instruction::print(void) const
  34 {
  35    ir_instruction *deconsted = const_cast<ir_instruction *>(this);
  36
  37    ir_print_visitor v;
  38    deconsted->accept(&v);
  39 }
  40
  41 void
  42 _mesa_print_ir(exec_list *instructions,
  43                struct _mesa_glsl_parse_state *state)
  44 {
  45    if (state) {
  46       for (unsigned i = 0; i < state->num_user_structures; i++) {
  47          const glsl_type *const s = state->user_structures[i];
  48
  49          printf("(structure (%s) (%s@%p) (%u) (\n",
  50                 s->name, s->name, (void *) s, s->length);
  51
  52          for (unsigned j = 0; j < s->length; j++) {
  53             printf("\t((");
  54             print_type(s->fields.structure[j].type);
  55             printf(")(%s))\n", s->fields.structure[j].name);
  56          }
  57
  58          printf(")\n");
  59       }
  60    }
  61
  62    printf("(\n");
  63    foreach_iter(exec_list_iterator, iter, *instructions) {
  64       ir_instruction *ir = (ir_instruction *)iter.get();
  65       ir->print();
  66       if (ir->ir_type != ir_type_function)
  67          printf("\n");
  68    }
  69    printf("\n)");
  70 }
  71
  72 ir_print_visitor::ir_print_visitor()
  73 {
  74    indentation = 0;
  75    printable_names =
  76       hash_table_ctor(32, hash_table_pointer_hash, hash_table_pointer_compare);
  77    symbols = _mesa_symbol_table_ctor();
  78    mem_ctx = ralloc_context(NULL);
  79 }
  80
  81 ir_print_visitor::~ir_print_visitor()
  82 {
  83    hash_table_dtor(printable_names);
  84    _mesa_symbol_table_dtor(symbols);
  85    ralloc_free(mem_ctx);
  86 }
  87
  88 void ir_print_visitor::indent(void)
  89 {
  90    for (int i = 0; i < indentation; i++)
  91       printf("  ");
  92 }
  93
  94 const char *
  95 ir_print_visitor::unique_name(ir_variable *var)
  96 {
  97    /* var->name can be NULL in function prototypes when a type is given for a
  98     * parameter but no name is given.  In that case, just return an empty
  99     * string.  Don't worry about tracking the generated name in the printable
 100     * names hash because this is the only scope where it can ever appear.
 101     */
 102    if (var->name == NULL) {
 103       static unsigned arg = 1;
 104       return ralloc_asprintf(this->mem_ctx, "parameter@%u", arg++);
 105    }
 106
 107    /* Do we already have a name for this variable? */
 108    const char *name = (const char *) hash_table_find(this->printable_names, var);
 109    if (name != NULL)
 110       return name;
 111
 112    /* If there's no conflict, just use the original name */
 113    if (_mesa_symbol_table_find_symbol(this->symbols, -1, var->name) == NULL) {
 114       name = var->name;
 115    } else {
 116       static unsigned i = 1;
 117       name = ralloc_asprintf(this->mem_ctx, "%s@%u", var->name, ++i);
 118    }
 119    hash_table_insert(this->printable_names, (void *) name, var);
 120    _mesa_symbol_table_add_symbol(this->symbols, -1, name, var);
 121    return name;
 122 }
 123
 124 static void
 125 print_type(const glsl_type *t)
 126 {
 127    if (t->base_type == GLSL_TYPE_ARRAY) {
 128       printf("(array ");
 129       print_type(t->fields.array);
 130       printf(" %u)", t->length);
 131    } else if ((t->base_type == GLSL_TYPE_STRUCT)
 132               && (strncmp("gl_", t->name, 3) != 0)) {
 133       printf("%s@%p", t->name, (void *) t);
 134    } else {
 135       printf("%s", t->name);
 136    }
 137 }
 138
 139 void ir_print_visitor::visit(ir_rvalue *ir)
 140 {
 141    printf("error");
 142 }
 143
 144 void ir_print_visitor::visit(ir_variable *ir)
 145 {
 146    printf("(declare ");
 147
 148    const char *const cent = (ir->centroid) ? "centroid " : "";
 149    const char *const inv = (ir->invariant) ? "invariant " : "";
 150    const char *const mode[] = { "", "uniform ", "shader_in ", "shader_out ",
 151                                 "in ", "out ", "inout ",
 152                                 "const_in ", "sys ", "temporary " };
 153    STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);
 154    const char *const interp[] = { "", "smooth", "flat", "noperspective" };
 155    STATIC_ASSERT(ARRAY_SIZE(interp) == INTERP_QUALIFIER_COUNT);
 156
 157    printf("(%s%s%s%s) ",
 158           cent, inv, mode[ir->mode], interp[ir->interpolation]);
 159
 160    print_type(ir->type);
 161    printf(" %s)", unique_name(ir));
 162 }
 163
 164
 165 void ir_print_visitor::visit(ir_function_signature *ir)
 166 {
 167    _mesa_symbol_table_push_scope(symbols);
 168    printf("(signature ");
 169    indentation++;
 170
 171    print_type(ir->return_type);
 172    printf("\n");
 173    indent();
 174
 175    printf("(parameters\n");
 176    indentation++;
 177
 178    foreach_iter(exec_list_iterator, iter, ir->parameters) {
 179       ir_variable *const inst = (ir_variable *) iter.get();
 180
 181       indent();
 182       inst->accept(this);
 183       printf("\n");
 184    }
 185    indentation--;
 186
 187    indent();
 188    printf(")\n");
 189
 190    indent();
 191
 192    printf("(\n");
 193    indentation++;
 194
 195    foreach_iter(exec_list_iterator, iter, ir->body) {
 196       ir_instruction *const inst = (ir_instruction *) iter.get();
 197
 198       indent();
 199       inst->accept(this);
 200       printf("\n");
 201    }
 202    indentation--;
 203    indent();
 204    printf("))\n");
 205    indentation--;
 206    _mesa_symbol_table_pop_scope(symbols);
 207 }
 208
 209
 210 void ir_print_visitor::visit(ir_function *ir)
 211 {
 212    printf("(function %s\n", ir->name);
 213    indentation++;
 214    foreach_iter(exec_list_iterator, iter, *ir) {
 215       ir_function_signature *const sig = (ir_function_signature *) iter.get();
 216       indent();
 217       sig->accept(this);
 218       printf("\n");
 219    }
 220    indentation--;
 221    indent();
 222    printf(")\n\n");
 223 }
 224
 225
 226 void ir_print_visitor::visit(ir_expression *ir)
 227 {
 228    printf("(expression ");
 229
 230    print_type(ir->type);
 231
 232    printf(" %s ", ir->operator_string());
 233
 234    for (unsigned i = 0; i < ir->get_num_operands(); i++) {
 235       ir->operands[i]->accept(this);
 236    }
 237
 238    printf(") ");
 239 }
 240
 241
 242 void ir_print_visitor::visit(ir_texture *ir)
 243 {
 244    printf("(%s ", ir->opcode_string());
 245
 246    print_type(ir->type);
 247    printf(" ");
 248
 249    ir->sampler->accept(this);
 250    printf(" ");
 251
 252    if (ir->op != ir_txs) {
 253       ir->coordinate->accept(this);
 254
 255       printf(" ");
 256
 257       if (ir->offset != NULL) {
 258          ir->offset->accept(this);
 259       } else {
 260          printf("0");
 261       }
 262
 263       printf(" ");
 264    }
 265
 266    if (ir->op != ir_txf && ir->op != ir_txf_ms && ir->op != ir_txs) {
 267       if (ir->projector)
 268          ir->projector->accept(this);
 269       else
 270          printf("1");
 271
 272       if (ir->shadow_comparitor) {
 273          printf(" ");
 274          ir->shadow_comparitor->accept(this);
 275       } else {
 276          printf(" ()");
 277       }
 278    }
 279
 280    printf(" ");
 281    switch (ir->op)
 282    {
 283    case ir_tex:
 284    case ir_lod:
 285       break;
 286    case ir_txb:
 287       ir->lod_info.bias->accept(this);
 288       break;
 289    case ir_txl:
 290    case ir_txf:
 291    case ir_txs:
 292       ir->lod_info.lod->accept(this);
 293       break;
 294    case ir_txf_ms:
 295       ir->lod_info.sample_index->accept(this);
 296       break;
 297    case ir_txd:
 298       printf("(");
 299       ir->lod_info.grad.dPdx->accept(this);
 300       printf(" ");
 301       ir->lod_info.grad.dPdy->accept(this);
 302       printf(")");
 303       break;
 304    };
 305    printf(")");
 306 }
 307
 308
 309 void ir_print_visitor::visit(ir_swizzle *ir)
 310 {
 311    const unsigned swiz[4] = {
 312       ir->mask.x,
 313       ir->mask.y,
 314       ir->mask.z,
 315       ir->mask.w,
 316    };
 317
 318    printf("(swiz ");
 319    for (unsigned i = 0; i < ir->mask.num_components; i++) {
 320       printf("%c", "xyzw"[swiz[i]]);
 321    }
 322    printf(" ");
 323    ir->val->accept(this);
 324    printf(")");
 325 }
 326
 327
 328 void ir_print_visitor::visit(ir_dereference_variable *ir)
 329 {
 330    ir_variable *var = ir->variable_referenced();
 331    printf("(var_ref %s) ", unique_name(var));
 332 }
 333
 334
 335 void ir_print_visitor::visit(ir_dereference_array *ir)
 336 {
 337    printf("(array_ref ");
 338    ir->array->accept(this);
 339    ir->array_index->accept(this);
 340    printf(") ");
 341 }
 342
 343
 344 void ir_print_visitor::visit(ir_dereference_record *ir)
 345 {
 346    printf("(record_ref ");
 347    ir->record->accept(this);
 348    printf(" %s) ", ir->field);
 349 }
 350
 351
 352 void ir_print_visitor::visit(ir_assignment *ir)
 353 {
 354    printf("(assign ");
 355
 356    if (ir->condition)
 357       ir->condition->accept(this);
 358
 359    char mask[5];
 360    unsigned j = 0;
 361
 362    for (unsigned i = 0; i < 4; i++) {
 363       if ((ir->write_mask & (1 << i)) != 0) {
 364          mask[j] = "xyzw"[i];
 365          j++;
 366       }
 367    }
 368    mask[j] = '\0';
 369
 370    printf(" (%s) ", mask);
 371
 372    ir->lhs->accept(this);
 373
 374    printf(" ");
 375
 376    ir->rhs->accept(this);
 377    printf(") ");
 378 }
 379
 380
 381 void ir_print_visitor::visit(ir_constant *ir)
 382 {
 383    printf("(constant ");
 384    print_type(ir->type);
 385    printf(" (");
 386
 387    if (ir->type->is_array()) {
 388       for (unsigned i = 0; i < ir->type->length; i++)
 389          ir->get_array_element(i)->accept(this);
 390    } else if (ir->type->is_record()) {
 391       ir_constant *value = (ir_constant *) ir->components.get_head();
 392       for (unsigned i = 0; i < ir->type->length; i++) {
 393          printf("(%s ", ir->type->fields.structure[i].name);
 394          value->accept(this);
 395          printf(")");
 396
 397          value = (ir_constant *) value->next;
 398       }
 399    } else {
 400       for (unsigned i = 0; i < ir->type->components(); i++) {
 401          if (i != 0)
 402             printf(" ");
 403          switch (ir->type->base_type) {
 404          case GLSL_TYPE_UINT:  printf("%u", ir->value.u[i]); break;
 405          case GLSL_TYPE_INT:   printf("%d", ir->value.i[i]); break;
 406          case GLSL_TYPE_FLOAT: printf("%f", ir->value.f[i]); break;
 407          case GLSL_TYPE_BOOL:  printf("%d", ir->value.b[i]); break;
 408          default: assert(0);
 409          }
 410       }
 411    }
 412    printf(")) ");
 413 }
 414
 415
 416 void
 417 ir_print_visitor::visit(ir_call *ir)
 418 {
 419    printf("(call %s ", ir->callee_name());
 420    if (ir->return_deref)
 421       ir->return_deref->accept(this);
 422    printf(" (");
 423    foreach_iter(exec_list_iterator, iter, *ir) {
 424       ir_instruction *const inst = (ir_instruction *) iter.get();
 425
 426       inst->accept(this);
 427    }
 428    printf("))\n");
 429 }
 430
 431
 432 void
 433 ir_print_visitor::visit(ir_return *ir)
 434 {
 435    printf("(return");
 436
 437    ir_rvalue *const value = ir->get_value();
 438    if (value) {
 439       printf(" ");
 440       value->accept(this);
 441    }
 442
 443    printf(")");
 444 }
 445
 446
 447 void
 448 ir_print_visitor::visit(ir_discard *ir)
 449 {
 450    printf("(discard ");
 451
 452    if (ir->condition != NULL) {
 453       printf(" ");
 454       ir->condition->accept(this);
 455    }
 456
 457    printf(")");
 458 }
 459
 460
 461 void
 462 ir_print_visitor::visit(ir_if *ir)
 463 {
 464    printf("(if ");
 465    ir->condition->accept(this);
 466
 467    printf("(\n");
 468    indentation++;
 469
 470    foreach_iter(exec_list_iterator, iter, ir->then_instructions) {
 471       ir_instruction *const inst = (ir_instruction *) iter.get();
 472
 473       indent();
 474       inst->accept(this);
 475       printf("\n");
 476    }
 477
 478    indentation--;
 479    indent();
 480    printf(")\n");
 481
 482    indent();
 483    if (!ir->else_instructions.is_empty()) {
 484       printf("(\n");
 485       indentation++;
 486
 487       foreach_iter(exec_list_iterator, iter, ir->else_instructions) {
 488          ir_instruction *const inst = (ir_instruction *) iter.get();
 489
 490          indent();
 491          inst->accept(this);
 492          printf("\n");
 493       }
 494       indentation--;
 495       indent();
 496       printf("))\n");
 497    } else {
 498       printf("())\n");
 499    }
 500 }
 501
 502
 503 void
 504 ir_print_visitor::visit(ir_loop *ir)
 505 {
 506    printf("(loop (");
 507    if (ir->counter != NULL)
 508       ir->counter->accept(this);
 509    printf(") (");
 510    if (ir->from != NULL)
 511       ir->from->accept(this);
 512    printf(") (");
 513    if (ir->to != NULL)
 514       ir->to->accept(this);
 515    printf(") (");
 516    if (ir->increment != NULL)
 517       ir->increment->accept(this);
 518    printf(") (\n");
 519    indentation++;
 520
 521    foreach_iter(exec_list_iterator, iter, ir->body_instructions) {
 522       ir_instruction *const inst = (ir_instruction *) iter.get();
 523
 524       indent();
 525       inst->accept(this);
 526       printf("\n");
 527    }
 528    indentation--;
 529    indent();
 530    printf("))\n");
 531 }
 532
 533
 534 void
 535 ir_print_visitor::visit(ir_loop_jump *ir)
 536 {
 537    printf("%s", ir->is_break() ? "break" : "continue");
 538 }