src/gallium/auxiliary/tgsi/tgsi_text.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "util/u_debug.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_prim.h"
  31 #include "pipe/p_defines.h"
  32 #include "util/u_inlines.h"
  33 #include "tgsi_text.h"
  34 #include "tgsi_build.h"
  35 #include "tgsi_info.h"
  36 #include "tgsi_parse.h"
  37 #include "tgsi_sanity.h"
  38 #include "tgsi_strings.h"
  39 #include "tgsi_util.h"
  40 #include "tgsi_dump.h"
  41
  42 static boolean is_alpha_underscore( const char *cur )
  43 {
  44    return
  45       (*cur >= 'a' && *cur <= 'z') ||
  46       (*cur >= 'A' && *cur <= 'Z') ||
  47       *cur == '_';
  48 }
  49
  50 static boolean is_digit( const char *cur )
  51 {
  52    return *cur >= '0' && *cur <= '9';
  53 }
  54
  55 static boolean is_digit_alpha_underscore( const char *cur )
  56 {
  57    return is_digit( cur ) || is_alpha_underscore( cur );
  58 }
  59
  60 static char uprcase( char c )
  61 {
  62    if (c >= 'a' && c <= 'z')
  63       return c + 'A' - 'a';
  64    return c;
  65 }
  66
  67 /*
  68  * Ignore case of str1 and assume str1 is already uppercase.
  69  * Return TRUE iff str1 and str2 are equal.
  70  */
  71 static int
  72 streq_nocase_uprcase(const char *str1,
  73                      const char *str2)
  74 {
  75    while (*str1 && *str2) {
  76       if (*str1 != uprcase(*str2))
  77          return FALSE;
  78       str1++;
  79       str2++;
  80    }
  81    return *str1 == 0 && *str2 == 0;
  82 }
  83
  84 /* Return TRUE if both strings match.
  85  * The second string is terminated by zero.
  86  * The pointer to the first string is moved at end of the read word
  87  * on success.
  88  */
  89 static boolean str_match_no_case( const char **pcur, const char *str )
  90 {
  91    const char *cur = *pcur;
  92
  93    while (*str != '\0' && *str == uprcase( *cur )) {
  94       str++;
  95       cur++;
  96    }
  97    if (*str == '\0') {
  98       *pcur = cur;
  99       return TRUE;
 100    }
 101    return FALSE;
 102 }
 103
 104 /* Return TRUE if both strings match.
 105  * The first string is be terminated by a non-digit non-letter non-underscore
 106  * character, the second string is terminated by zero.
 107  * The pointer to the first string is moved at end of the read word
 108  * on success.
 109  */
 110 static boolean str_match_nocase_whole( const char **pcur, const char *str )
 111 {
 112    const char *cur = *pcur;
 113
 114    if (str_match_no_case(&cur, str) &&
 115        !is_digit_alpha_underscore(cur)) {
 116       *pcur = cur;
 117       return TRUE;
 118    }
 119    return FALSE;
 120 }
 121
 122 /* Eat zero or more whitespaces.
 123  */
 124 static void eat_opt_white( const char **pcur )
 125 {
 126    while (**pcur == ' ' || **pcur == '\t' || **pcur == '\n')
 127       (*pcur)++;
 128 }
 129
 130 /* Eat one or more whitespaces.
 131  * Return TRUE if at least one whitespace eaten.
 132  */
 133 static boolean eat_white( const char **pcur )
 134 {
 135    const char *cur = *pcur;
 136
 137    eat_opt_white( pcur );
 138    return *pcur > cur;
 139 }
 140
 141 /* Parse unsigned integer.
 142  * No checks for overflow.
 143  */
 144 static boolean parse_uint( const char **pcur, uint *val )
 145 {
 146    const char *cur = *pcur;
 147
 148    if (is_digit( cur )) {
 149       *val = *cur++ - '0';
 150       while (is_digit( cur ))
 151          *val = *val * 10 + *cur++ - '0';
 152       *pcur = cur;
 153       return TRUE;
 154    }
 155    return FALSE;
 156 }
 157
 158 static boolean parse_int( const char **pcur, int *val )
 159 {
 160    const char *cur = *pcur;
 161    int sign = (*cur == '-' ? -1 : 1);
 162
 163    if (*cur == '+' || *cur == '-')
 164       cur++;
 165
 166    if (parse_uint(&cur, (uint *)val)) {
 167       *val *= sign;
 168       *pcur = cur;
 169       return TRUE;
 170    }
 171
 172    return FALSE;
 173 }
 174
 175 static boolean parse_identifier( const char **pcur, char *ret )
 176 {
 177    const char *cur = *pcur;
 178    int i = 0;
 179    if (is_alpha_underscore( cur )) {
 180       ret[i++] = *cur++;
 181       while (is_alpha_underscore( cur ) || is_digit( cur ))
 182          ret[i++] = *cur++;
 183       ret[i++] = '\0';
 184       *pcur = cur;
 185       return TRUE;
 186    }
 187    return FALSE;
 188 }
 189
 190 /* Parse floating point.
 191  */
 192 static boolean parse_float( const char **pcur, float *val )
 193 {
 194    const char *cur = *pcur;
 195    boolean integral_part = FALSE;
 196    boolean fractional_part = FALSE;
 197
 198    *val = (float) atof( cur );
 199
 200    if (*cur == '-' || *cur == '+')
 201       cur++;
 202    if (is_digit( cur )) {
 203       cur++;
 204       integral_part = TRUE;
 205       while (is_digit( cur ))
 206          cur++;
 207    }
 208    if (*cur == '.') {
 209       cur++;
 210       if (is_digit( cur )) {
 211          cur++;
 212          fractional_part = TRUE;
 213          while (is_digit( cur ))
 214             cur++;
 215       }
 216    }
 217    if (!integral_part && !fractional_part)
 218       return FALSE;
 219    if (uprcase( *cur ) == 'E') {
 220       cur++;
 221       if (*cur == '-' || *cur == '+')
 222          cur++;
 223       if (is_digit( cur )) {
 224          cur++;
 225          while (is_digit( cur ))
 226             cur++;
 227       }
 228       else
 229          return FALSE;
 230    }
 231    *pcur = cur;
 232    return TRUE;
 233 }
 234
 235 struct translate_ctx
 236 {
 237    const char *text;
 238    const char *cur;
 239    struct tgsi_token *tokens;
 240    struct tgsi_token *tokens_cur;
 241    struct tgsi_token *tokens_end;
 242    struct tgsi_header *header;
 243    unsigned processor : 4;
 244    int implied_array_size : 5;
 245    unsigned num_immediates;
 246 };
 247
 248 static void report_error( struct translate_ctx *ctx, const char *msg )
 249 {
 250    int line = 1;
 251    int column = 1;
 252    const char *itr = ctx->text;
 253
 254    while (itr != ctx->cur) {
 255       if (*itr == '\n') {
 256          column = 1;
 257          ++line;
 258       }
 259       ++column;
 260       ++itr;
 261    }
 262
 263    debug_printf( "\nTGSI asm error: %s [%d : %d] \n", msg, line, column );
 264 }
 265
 266 /* Parse shader header.
 267  * Return TRUE for one of the following headers.
 268  *    FRAG
 269  *    GEOM
 270  *    VERT
 271  */
 272 static boolean parse_header( struct translate_ctx *ctx )
 273 {
 274    uint processor;
 275
 276    if (str_match_nocase_whole( &ctx->cur, "FRAG" ))
 277       processor = TGSI_PROCESSOR_FRAGMENT;
 278    else if (str_match_nocase_whole( &ctx->cur, "VERT" ))
 279       processor = TGSI_PROCESSOR_VERTEX;
 280    else if (str_match_nocase_whole( &ctx->cur, "GEOM" ))
 281       processor = TGSI_PROCESSOR_GEOMETRY;
 282    else if (str_match_nocase_whole( &ctx->cur, "COMP" ))
 283       processor = TGSI_PROCESSOR_COMPUTE;
 284    else {
 285       report_error( ctx, "Unknown header" );
 286       return FALSE;
 287    }
 288
 289    if (ctx->tokens_cur >= ctx->tokens_end)
 290       return FALSE;
 291    ctx->header = (struct tgsi_header *) ctx->tokens_cur++;
 292    *ctx->header = tgsi_build_header();
 293
 294    if (ctx->tokens_cur >= ctx->tokens_end)
 295       return FALSE;
 296    *(struct tgsi_processor *) ctx->tokens_cur++ = tgsi_build_processor( processor, ctx->header );
 297    ctx->processor = processor;
 298
 299    return TRUE;
 300 }
 301
 302 static boolean parse_label( struct translate_ctx *ctx, uint *val )
 303 {
 304    const char *cur = ctx->cur;
 305
 306    if (parse_uint( &cur, val )) {
 307       eat_opt_white( &cur );
 308       if (*cur == ':') {
 309          cur++;
 310          ctx->cur = cur;
 311          return TRUE;
 312       }
 313    }
 314    return FALSE;
 315 }
 316
 317 static boolean
 318 parse_file( const char **pcur, uint *file )
 319 {
 320    uint i;
 321
 322    for (i = 0; i < TGSI_FILE_COUNT; i++) {
 323       const char *cur = *pcur;
 324
 325       if (str_match_nocase_whole( &cur, tgsi_file_name(i) )) {
 326          *pcur = cur;
 327          *file = i;
 328          return TRUE;
 329       }
 330    }
 331    return FALSE;
 332 }
 333
 334 static boolean
 335 parse_opt_writemask(
 336    struct translate_ctx *ctx,
 337    uint *writemask )
 338 {
 339    const char *cur;
 340
 341    cur = ctx->cur;
 342    eat_opt_white( &cur );
 343    if (*cur == '.') {
 344       cur++;
 345       *writemask = TGSI_WRITEMASK_NONE;
 346       eat_opt_white( &cur );
 347       if (uprcase( *cur ) == 'X') {
 348          cur++;
 349          *writemask |= TGSI_WRITEMASK_X;
 350       }
 351       if (uprcase( *cur ) == 'Y') {
 352          cur++;
 353          *writemask |= TGSI_WRITEMASK_Y;
 354       }
 355       if (uprcase( *cur ) == 'Z') {
 356          cur++;
 357          *writemask |= TGSI_WRITEMASK_Z;
 358       }
 359       if (uprcase( *cur ) == 'W') {
 360          cur++;
 361          *writemask |= TGSI_WRITEMASK_W;
 362       }
 363
 364       if (*writemask == TGSI_WRITEMASK_NONE) {
 365          report_error( ctx, "Writemask expected" );
 366          return FALSE;
 367       }
 368
 369       ctx->cur = cur;
 370    }
 371    else {
 372       *writemask = TGSI_WRITEMASK_XYZW;
 373    }
 374    return TRUE;
 375 }
 376
 377
 378 /* <register_file_bracket> ::= <file> `['
 379  */
 380 static boolean
 381 parse_register_file_bracket(
 382    struct translate_ctx *ctx,
 383    uint *file )
 384 {
 385    if (!parse_file( &ctx->cur, file )) {
 386       report_error( ctx, "Unknown register file" );
 387       return FALSE;
 388    }
 389    eat_opt_white( &ctx->cur );
 390    if (*ctx->cur != '[') {
 391       report_error( ctx, "Expected `['" );
 392       return FALSE;
 393    }
 394    ctx->cur++;
 395    return TRUE;
 396 }
 397
 398 /* <register_file_bracket_index> ::= <register_file_bracket> <uint>
 399  */
 400 static boolean
 401 parse_register_file_bracket_index(
 402    struct translate_ctx *ctx,
 403    uint *file,
 404    int *index )
 405 {
 406    uint uindex;
 407
 408    if (!parse_register_file_bracket( ctx, file ))
 409       return FALSE;
 410    eat_opt_white( &ctx->cur );
 411    if (!parse_uint( &ctx->cur, &uindex )) {
 412       report_error( ctx, "Expected literal unsigned integer" );
 413       return FALSE;
 414    }
 415    *index = (int) uindex;
 416    return TRUE;
 417 }
 418
 419 /* Parse simple 1d register operand.
 420  *    <register_dst> ::= <register_file_bracket_index> `]'
 421  */
 422 static boolean
 423 parse_register_1d(struct translate_ctx *ctx,
 424                   uint *file,
 425                   int *index )
 426 {
 427    if (!parse_register_file_bracket_index( ctx, file, index ))
 428       return FALSE;
 429    eat_opt_white( &ctx->cur );
 430    if (*ctx->cur != ']') {
 431       report_error( ctx, "Expected `]'" );
 432       return FALSE;
 433    }
 434    ctx->cur++;
 435    return TRUE;
 436 }
 437
 438 struct parsed_bracket {
 439    int index;
 440
 441    uint ind_file;
 442    int ind_index;
 443    uint ind_comp;
 444    uint ind_array;
 445 };
 446
 447
 448 static boolean
 449 parse_register_bracket(
 450    struct translate_ctx *ctx,
 451    struct parsed_bracket *brackets)
 452 {
 453    const char *cur;
 454    uint uindex;
 455
 456    memset(brackets, 0, sizeof(struct parsed_bracket));
 457
 458    eat_opt_white( &ctx->cur );
 459
 460    cur = ctx->cur;
 461    if (parse_file( &cur, &brackets->ind_file )) {
 462       if (!parse_register_1d( ctx, &brackets->ind_file,
 463                               &brackets->ind_index ))
 464          return FALSE;
 465       eat_opt_white( &ctx->cur );
 466
 467       if (*ctx->cur == '.') {
 468          ctx->cur++;
 469          eat_opt_white(&ctx->cur);
 470
 471          switch (uprcase(*ctx->cur)) {
 472          case 'X':
 473             brackets->ind_comp = TGSI_SWIZZLE_X;
 474             break;
 475          case 'Y':
 476             brackets->ind_comp = TGSI_SWIZZLE_Y;
 477             break;
 478          case 'Z':
 479             brackets->ind_comp = TGSI_SWIZZLE_Z;
 480             break;
 481          case 'W':
 482             brackets->ind_comp = TGSI_SWIZZLE_W;
 483             break;
 484          default:
 485             report_error(ctx, "Expected indirect register swizzle component `x', `y', `z' or `w'");
 486             return FALSE;
 487          }
 488          ctx->cur++;
 489          eat_opt_white(&ctx->cur);
 490       }
 491
 492       if (*ctx->cur == '+' || *ctx->cur == '-')
 493          parse_int( &ctx->cur, &brackets->index );
 494       else
 495          brackets->index = 0;
 496    }
 497    else {
 498       if (!parse_uint( &ctx->cur, &uindex )) {
 499          report_error( ctx, "Expected literal unsigned integer" );
 500          return FALSE;
 501       }
 502       brackets->index = (int) uindex;
 503       brackets->ind_file = TGSI_FILE_NULL;
 504       brackets->ind_index = 0;
 505    }
 506    eat_opt_white( &ctx->cur );
 507    if (*ctx->cur != ']') {
 508       report_error( ctx, "Expected `]'" );
 509       return FALSE;
 510    }
 511    ctx->cur++;
 512    if (*ctx->cur == '(') {
 513       ctx->cur++;
 514       eat_opt_white( &ctx->cur );
 515       if (!parse_uint( &ctx->cur, &brackets->ind_array )) {
 516          report_error( ctx, "Expected literal unsigned integer" );
 517          return FALSE;
 518       }
 519       eat_opt_white( &ctx->cur );
 520       if (*ctx->cur != ')') {
 521          report_error( ctx, "Expected `)'" );
 522          return FALSE;
 523       }
 524       ctx->cur++;
 525    }
 526    return TRUE;
 527 }
 528
 529 static boolean
 530 parse_opt_register_src_bracket(
 531    struct translate_ctx *ctx,
 532    struct parsed_bracket *brackets,
 533    int *parsed_brackets)
 534 {
 535    const char *cur = ctx->cur;
 536
 537    *parsed_brackets = 0;
 538
 539    eat_opt_white( &cur );
 540    if (cur[0] == '[') {
 541       ++cur;
 542       ctx->cur = cur;
 543
 544       if (!parse_register_bracket(ctx, brackets))
 545          return FALSE;
 546
 547       *parsed_brackets = 1;
 548    }
 549
 550    return TRUE;
 551 }
 552
 553
 554 /* Parse source register operand.
 555  *    <register_src> ::= <register_file_bracket_index> `]' |
 556  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `]' |
 557  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `+' <uint> `]' |
 558  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `-' <uint> `]'
 559  */
 560 static boolean
 561 parse_register_src(
 562    struct translate_ctx *ctx,
 563    uint *file,
 564    struct parsed_bracket *brackets)
 565 {
 566    brackets->ind_comp = TGSI_SWIZZLE_X;
 567    if (!parse_register_file_bracket( ctx, file ))
 568       return FALSE;
 569    if (!parse_register_bracket( ctx, brackets ))
 570        return FALSE;
 571
 572    return TRUE;
 573 }
 574
 575 struct parsed_dcl_bracket {
 576    uint first;
 577    uint last;
 578 };
 579
 580 static boolean
 581 parse_register_dcl_bracket(
 582    struct translate_ctx *ctx,
 583    struct parsed_dcl_bracket *bracket)
 584 {
 585    uint uindex;
 586    memset(bracket, 0, sizeof(struct parsed_dcl_bracket));
 587
 588    eat_opt_white( &ctx->cur );
 589
 590    if (!parse_uint( &ctx->cur, &uindex )) {
 591       /* it can be an empty bracket [] which means its range
 592        * is from 0 to some implied size */
 593       if (ctx->cur[0] == ']' && ctx->implied_array_size != 0) {
 594          bracket->first = 0;
 595          bracket->last = ctx->implied_array_size - 1;
 596          goto cleanup;
 597       }
 598       report_error( ctx, "Expected literal unsigned integer" );
 599       return FALSE;
 600    }
 601    bracket->first = uindex;
 602
 603    eat_opt_white( &ctx->cur );
 604
 605    if (ctx->cur[0] == '.' && ctx->cur[1] == '.') {
 606       uint uindex;
 607
 608       ctx->cur += 2;
 609       eat_opt_white( &ctx->cur );
 610       if (!parse_uint( &ctx->cur, &uindex )) {
 611          report_error( ctx, "Expected literal integer" );
 612          return FALSE;
 613       }
 614       bracket->last = (int) uindex;
 615       eat_opt_white( &ctx->cur );
 616    }
 617    else {
 618       bracket->last = bracket->first;
 619    }
 620
 621 cleanup:
 622    if (*ctx->cur != ']') {
 623       report_error( ctx, "Expected `]' or `..'" );
 624       return FALSE;
 625    }
 626    ctx->cur++;
 627    return TRUE;
 628 }
 629
 630 /* Parse register declaration.
 631  *    <register_dcl> ::= <register_file_bracket_index> `]' |
 632  *                       <register_file_bracket_index> `..' <index> `]'
 633  */
 634 static boolean
 635 parse_register_dcl(
 636    struct translate_ctx *ctx,
 637    uint *file,
 638    struct parsed_dcl_bracket *brackets,
 639    int *num_brackets)
 640 {
 641    const char *cur;
 642
 643    *num_brackets = 0;
 644
 645    if (!parse_register_file_bracket( ctx, file ))
 646       return FALSE;
 647    if (!parse_register_dcl_bracket( ctx, &brackets[0] ))
 648       return FALSE;
 649
 650    *num_brackets = 1;
 651
 652    cur = ctx->cur;
 653    eat_opt_white( &cur );
 654
 655    if (cur[0] == '[') {
 656       ++cur;
 657       ctx->cur = cur;
 658       if (!parse_register_dcl_bracket( ctx, &brackets[1] ))
 659          return FALSE;
 660       /* for geometry shader we don't really care about
 661        * the first brackets it's always the size of the
 662        * input primitive. so we want to declare just
 663        * the index relevant to the semantics which is in
 664        * the second bracket */
 665       if (ctx->processor == TGSI_PROCESSOR_GEOMETRY && *file == TGSI_FILE_INPUT) {
 666          brackets[0] = brackets[1];
 667          *num_brackets = 1;
 668       } else {
 669          *num_brackets = 2;
 670       }
 671    }
 672
 673    return TRUE;
 674 }
 675
 676
 677 /* Parse destination register operand.*/
 678 static boolean
 679 parse_register_dst(
 680    struct translate_ctx *ctx,
 681    uint *file,
 682    struct parsed_bracket *brackets)
 683 {
 684    brackets->ind_comp = TGSI_SWIZZLE_X;
 685    if (!parse_register_file_bracket( ctx, file ))
 686       return FALSE;
 687    if (!parse_register_bracket( ctx, brackets ))
 688        return FALSE;
 689
 690    return TRUE;
 691 }
 692
 693 static boolean
 694 parse_dst_operand(
 695    struct translate_ctx *ctx,
 696    struct tgsi_full_dst_register *dst )
 697 {
 698    uint file;
 699    uint writemask;
 700    const char *cur;
 701    struct parsed_bracket bracket[2];
 702    int parsed_opt_brackets;
 703
 704    if (!parse_register_dst( ctx, &file, &bracket[0] ))
 705       return FALSE;
 706    if (!parse_opt_register_src_bracket(ctx, &bracket[1], &parsed_opt_brackets))
 707       return FALSE;
 708
 709    cur = ctx->cur;
 710    eat_opt_white( &cur );
 711
 712    if (!parse_opt_writemask( ctx, &writemask ))
 713       return FALSE;
 714
 715    dst->Register.File = file;
 716    if (parsed_opt_brackets) {
 717       dst->Register.Dimension = 1;
 718       dst->Dimension.Indirect = 0;
 719       dst->Dimension.Dimension = 0;
 720       dst->Dimension.Index = bracket[0].index;
 721       bracket[0] = bracket[1];
 722    }
 723    dst->Register.Index = bracket[0].index;
 724    dst->Register.WriteMask = writemask;
 725    if (bracket[0].ind_file != TGSI_FILE_NULL) {
 726       dst->Register.Indirect = 1;
 727       dst->Indirect.File = bracket[0].ind_file;
 728       dst->Indirect.Index = bracket[0].ind_index;
 729       dst->Indirect.Swizzle = bracket[0].ind_comp;
 730       dst->Indirect.ArrayID = bracket[0].ind_array;
 731    }
 732    return TRUE;
 733 }
 734
 735 static boolean
 736 parse_optional_swizzle(
 737    struct translate_ctx *ctx,
 738    uint *swizzle,
 739    boolean *parsed_swizzle,
 740    int components)
 741 {
 742    const char *cur = ctx->cur;
 743
 744    *parsed_swizzle = FALSE;
 745
 746    eat_opt_white( &cur );
 747    if (*cur == '.') {
 748       uint i;
 749
 750       cur++;
 751       eat_opt_white( &cur );
 752       for (i = 0; i < components; i++) {
 753          if (uprcase( *cur ) == 'X')
 754             swizzle[i] = TGSI_SWIZZLE_X;
 755          else if (uprcase( *cur ) == 'Y')
 756             swizzle[i] = TGSI_SWIZZLE_Y;
 757          else if (uprcase( *cur ) == 'Z')
 758             swizzle[i] = TGSI_SWIZZLE_Z;
 759          else if (uprcase( *cur ) == 'W')
 760             swizzle[i] = TGSI_SWIZZLE_W;
 761          else {
 762             report_error( ctx, "Expected register swizzle component `x', `y', `z' or `w'" );
 763             return FALSE;
 764          }
 765          cur++;
 766       }
 767       *parsed_swizzle = TRUE;
 768       ctx->cur = cur;
 769    }
 770    return TRUE;
 771 }
 772
 773 static boolean
 774 parse_src_operand(
 775    struct translate_ctx *ctx,
 776    struct tgsi_full_src_register *src )
 777 {
 778    uint file;
 779    uint swizzle[4];
 780    boolean parsed_swizzle;
 781    struct parsed_bracket bracket[2];
 782    int parsed_opt_brackets;
 783
 784    if (*ctx->cur == '-') {
 785       ctx->cur++;
 786       eat_opt_white( &ctx->cur );
 787       src->Register.Negate = 1;
 788    }
 789
 790    if (*ctx->cur == '|') {
 791       ctx->cur++;
 792       eat_opt_white( &ctx->cur );
 793       src->Register.Absolute = 1;
 794    }
 795
 796    if (!parse_register_src(ctx, &file, &bracket[0]))
 797       return FALSE;
 798    if (!parse_opt_register_src_bracket(ctx, &bracket[1], &parsed_opt_brackets))
 799       return FALSE;
 800
 801    src->Register.File = file;
 802    if (parsed_opt_brackets) {
 803       src->Register.Dimension = 1;
 804       src->Dimension.Indirect = 0;
 805       src->Dimension.Dimension = 0;
 806       src->Dimension.Index = bracket[0].index;
 807       if (bracket[0].ind_file != TGSI_FILE_NULL) {
 808          src->Dimension.Indirect = 1;
 809          src->DimIndirect.File = bracket[0].ind_file;
 810          src->DimIndirect.Index = bracket[0].ind_index;
 811          src->DimIndirect.Swizzle = bracket[0].ind_comp;
 812          src->DimIndirect.ArrayID = bracket[0].ind_array;
 813       }
 814       bracket[0] = bracket[1];
 815    }
 816    src->Register.Index = bracket[0].index;
 817    if (bracket[0].ind_file != TGSI_FILE_NULL) {
 818       src->Register.Indirect = 1;
 819       src->Indirect.File = bracket[0].ind_file;
 820       src->Indirect.Index = bracket[0].ind_index;
 821       src->Indirect.Swizzle = bracket[0].ind_comp;
 822       src->Indirect.ArrayID = bracket[0].ind_array;
 823    }
 824
 825    /* Parse optional swizzle.
 826     */
 827    if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle, 4 )) {
 828       if (parsed_swizzle) {
 829          src->Register.SwizzleX = swizzle[0];
 830          src->Register.SwizzleY = swizzle[1];
 831          src->Register.SwizzleZ = swizzle[2];
 832          src->Register.SwizzleW = swizzle[3];
 833       }
 834    }
 835
 836    if (src->Register.Absolute) {
 837       eat_opt_white( &ctx->cur );
 838       if (*ctx->cur != '|') {
 839          report_error( ctx, "Expected `|'" );
 840          return FALSE;
 841       }
 842       ctx->cur++;
 843    }
 844
 845
 846    return TRUE;
 847 }
 848
 849 static boolean
 850 parse_texoffset_operand(
 851    struct translate_ctx *ctx,
 852    struct tgsi_texture_offset *src )
 853 {
 854    uint file;
 855    uint swizzle[3];
 856    boolean parsed_swizzle;
 857    struct parsed_bracket bracket;
 858
 859    if (!parse_register_src(ctx, &file, &bracket))
 860       return FALSE;
 861
 862    src->File = file;
 863    src->Index = bracket.index;
 864
 865    /* Parse optional swizzle.
 866     */
 867    if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle, 3 )) {
 868       if (parsed_swizzle) {
 869          src->SwizzleX = swizzle[0];
 870          src->SwizzleY = swizzle[1];
 871          src->SwizzleZ = swizzle[2];
 872       }
 873    }
 874
 875    return TRUE;
 876 }
 877
 878 static boolean
 879 match_inst(const char **pcur,
 880            unsigned *saturate,
 881            const struct tgsi_opcode_info *info)
 882 {
 883    const char *cur = *pcur;
 884
 885    /* simple case: the whole string matches the instruction name */
 886    if (str_match_nocase_whole(&cur, info->mnemonic)) {
 887       *pcur = cur;
 888       *saturate = TGSI_SAT_NONE;
 889       return TRUE;
 890    }
 891
 892    if (str_match_no_case(&cur, info->mnemonic)) {
 893       /* the instruction has a suffix, figure it out */
 894       if (str_match_nocase_whole(&cur, "_SAT")) {
 895          *pcur = cur;
 896          *saturate = TGSI_SAT_ZERO_ONE;
 897          return TRUE;
 898       }
 899
 900       if (str_match_nocase_whole(&cur, "_SATNV")) {
 901          *pcur = cur;
 902          *saturate = TGSI_SAT_MINUS_PLUS_ONE;
 903          return TRUE;
 904       }
 905    }
 906
 907    return FALSE;
 908 }
 909
 910 static boolean
 911 parse_instruction(
 912    struct translate_ctx *ctx,
 913    boolean has_label )
 914 {
 915    uint i;
 916    uint saturate = TGSI_SAT_NONE;
 917    const struct tgsi_opcode_info *info;
 918    struct tgsi_full_instruction inst;
 919    const char *cur;
 920    uint advance;
 921
 922    inst = tgsi_default_full_instruction();
 923
 924    /* Parse predicate.
 925     */
 926    eat_opt_white( &ctx->cur );
 927    if (*ctx->cur == '(') {
 928       uint file;
 929       int index;
 930       uint swizzle[4];
 931       boolean parsed_swizzle;
 932
 933       inst.Instruction.Predicate = 1;
 934
 935       ctx->cur++;
 936       if (*ctx->cur == '!') {
 937          ctx->cur++;
 938          inst.Predicate.Negate = 1;
 939       }
 940
 941       if (!parse_register_1d( ctx, &file, &index ))
 942          return FALSE;
 943
 944       if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle, 4 )) {
 945          if (parsed_swizzle) {
 946             inst.Predicate.SwizzleX = swizzle[0];
 947             inst.Predicate.SwizzleY = swizzle[1];
 948             inst.Predicate.SwizzleZ = swizzle[2];
 949             inst.Predicate.SwizzleW = swizzle[3];
 950          }
 951       }
 952
 953       if (*ctx->cur != ')') {
 954          report_error( ctx, "Expected `)'" );
 955          return FALSE;
 956       }
 957
 958       ctx->cur++;
 959    }
 960
 961    /* Parse instruction name.
 962     */
 963    eat_opt_white( &ctx->cur );
 964    for (i = 0; i < TGSI_OPCODE_LAST; i++) {
 965       cur = ctx->cur;
 966
 967       info = tgsi_get_opcode_info( i );
 968       if (match_inst(&cur, &saturate, info)) {
 969          if (info->num_dst + info->num_src + info->is_tex == 0) {
 970             ctx->cur = cur;
 971             break;
 972          }
 973          else if (*cur == '\0' || eat_white( &cur )) {
 974             ctx->cur = cur;
 975             break;
 976          }
 977       }
 978    }
 979    if (i == TGSI_OPCODE_LAST) {
 980       if (has_label)
 981          report_error( ctx, "Unknown opcode" );
 982       else
 983          report_error( ctx, "Expected `DCL', `IMM' or a label" );
 984       return FALSE;
 985    }
 986
 987    inst.Instruction.Opcode = i;
 988    inst.Instruction.Saturate = saturate;
 989    inst.Instruction.NumDstRegs = info->num_dst;
 990    inst.Instruction.NumSrcRegs = info->num_src;
 991
 992    if (i >= TGSI_OPCODE_SAMPLE && i <= TGSI_OPCODE_GATHER4) {
 993       /*
 994        * These are not considered tex opcodes here (no additional
 995        * target argument) however we're required to set the Texture
 996        * bit so we can set the number of tex offsets.
 997        */
 998       inst.Instruction.Texture = 1;
 999       inst.Texture.Texture = TGSI_TEXTURE_UNKNOWN;
1000    }
1001
1002    /* Parse instruction operands.
1003     */
1004    for (i = 0; i < info->num_dst + info->num_src + info->is_tex; i++) {
1005       if (i > 0) {
1006          eat_opt_white( &ctx->cur );
1007          if (*ctx->cur != ',') {
1008             report_error( ctx, "Expected `,'" );
1009             return FALSE;
1010          }
1011          ctx->cur++;
1012          eat_opt_white( &ctx->cur );
1013       }
1014
1015       if (i < info->num_dst) {
1016          if (!parse_dst_operand( ctx, &inst.Dst[i] ))
1017             return FALSE;
1018       }
1019       else if (i < info->num_dst + info->num_src) {
1020          if (!parse_src_operand( ctx, &inst.Src[i - info->num_dst] ))
1021             return FALSE;
1022       }
1023       else {
1024          uint j;
1025
1026          for (j = 0; j < TGSI_TEXTURE_COUNT; j++) {
1027             if (str_match_nocase_whole( &ctx->cur, tgsi_texture_names[j] )) {
1028                inst.Instruction.Texture = 1;
1029                inst.Texture.Texture = j;
1030                break;
1031             }
1032          }
1033          if (j == TGSI_TEXTURE_COUNT) {
1034             report_error( ctx, "Expected texture target" );
1035             return FALSE;
1036          }
1037       }
1038    }
1039
1040    cur = ctx->cur;
1041    eat_opt_white( &cur );
1042    for (i = 0; inst.Instruction.Texture && *cur == ','; i++) {
1043          cur++;
1044          eat_opt_white( &cur );
1045          ctx->cur = cur;
1046          if (!parse_texoffset_operand( ctx, &inst.TexOffsets[i] ))
1047             return FALSE;
1048          cur = ctx->cur;
1049          eat_opt_white( &cur );
1050    }
1051    inst.Texture.NumOffsets = i;
1052
1053    cur = ctx->cur;
1054    eat_opt_white( &cur );
1055    if (info->is_branch && *cur == ':') {
1056       uint target;
1057
1058       cur++;
1059       eat_opt_white( &cur );
1060       if (!parse_uint( &cur, &target )) {
1061          report_error( ctx, "Expected a label" );
1062          return FALSE;
1063       }
1064       inst.Instruction.Label = 1;
1065       inst.Label.Label = target;
1066       ctx->cur = cur;
1067    }
1068
1069    advance = tgsi_build_full_instruction(
1070       &inst,
1071       ctx->tokens_cur,
1072       ctx->header,
1073       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1074    if (advance == 0)
1075       return FALSE;
1076    ctx->tokens_cur += advance;
1077
1078    return TRUE;
1079 }
1080
1081 /* parses a 4-touple of the form {x, y, z, w}
1082  * where x, y, z, w are numbers */
1083 static boolean parse_immediate_data(struct translate_ctx *ctx, unsigned type,
1084                                     union tgsi_immediate_data *values)
1085 {
1086    unsigned i;
1087    int ret;
1088
1089    eat_opt_white( &ctx->cur );
1090    if (*ctx->cur != '{') {
1091       report_error( ctx, "Expected `{'" );
1092       return FALSE;
1093    }
1094    ctx->cur++;
1095    for (i = 0; i < 4; i++) {
1096       eat_opt_white( &ctx->cur );
1097       if (i > 0) {
1098          if (*ctx->cur != ',') {
1099             report_error( ctx, "Expected `,'" );
1100             return FALSE;
1101          }
1102          ctx->cur++;
1103          eat_opt_white( &ctx->cur );
1104       }
1105
1106       switch (type) {
1107       case TGSI_IMM_FLOAT32:
1108          ret = parse_float(&ctx->cur, &values[i].Float);
1109          break;
1110       case TGSI_IMM_UINT32:
1111          ret = parse_uint(&ctx->cur, &values[i].Uint);
1112          break;
1113       case TGSI_IMM_INT32:
1114          ret = parse_int(&ctx->cur, &values[i].Int);
1115          break;
1116       default:
1117          assert(0);
1118          ret = FALSE;
1119          break;
1120       }
1121
1122       if (!ret) {
1123          report_error( ctx, "Expected immediate constant" );
1124          return FALSE;
1125       }
1126    }
1127    eat_opt_white( &ctx->cur );
1128    if (*ctx->cur != '}') {
1129       report_error( ctx, "Expected `}'" );
1130       return FALSE;
1131    }
1132    ctx->cur++;
1133
1134    return TRUE;
1135 }
1136
1137 static boolean parse_declaration( struct translate_ctx *ctx )
1138 {
1139    struct tgsi_full_declaration decl;
1140    uint file;
1141    struct parsed_dcl_bracket brackets[2];
1142    int num_brackets;
1143    uint writemask;
1144    const char *cur, *cur2;
1145    uint advance;
1146    boolean is_vs_input;
1147
1148    if (!eat_white( &ctx->cur )) {
1149       report_error( ctx, "Syntax error" );
1150       return FALSE;
1151    }
1152    if (!parse_register_dcl( ctx, &file, brackets, &num_brackets))
1153       return FALSE;
1154    if (!parse_opt_writemask( ctx, &writemask ))
1155       return FALSE;
1156
1157    decl = tgsi_default_full_declaration();
1158    decl.Declaration.File = file;
1159    decl.Declaration.UsageMask = writemask;
1160
1161    if (num_brackets == 1) {
1162       decl.Range.First = brackets[0].first;
1163       decl.Range.Last = brackets[0].last;
1164    } else {
1165       decl.Range.First = brackets[1].first;
1166       decl.Range.Last = brackets[1].last;
1167
1168       decl.Declaration.Dimension = 1;
1169       decl.Dim.Index2D = brackets[0].first;
1170    }
1171
1172    is_vs_input = (file == TGSI_FILE_INPUT &&
1173                   ctx->processor == TGSI_PROCESSOR_VERTEX);
1174
1175    cur = ctx->cur;
1176    eat_opt_white( &cur );
1177    if (*cur == ',') {
1178       cur2 = cur;
1179       cur2++;
1180       eat_opt_white( &cur2 );
1181       if (str_match_nocase_whole( &cur2, "ARRAY" )) {
1182          int arrayid;
1183          if (*cur2 != '(') {
1184             report_error( ctx, "Expected `('" );
1185             return FALSE;
1186          }
1187          cur2++;
1188          eat_opt_white( &cur2 );
1189          if (!parse_int( &cur2, &arrayid )) {
1190             report_error( ctx, "Expected `,'" );
1191             return FALSE;
1192          }
1193          eat_opt_white( &cur2 );
1194          if (*cur2 != ')') {
1195             report_error( ctx, "Expected `)'" );
1196             return FALSE;
1197          }
1198          cur2++;
1199          decl.Declaration.Array = 1;
1200          decl.Array.ArrayID = arrayid;
1201          ctx->cur = cur = cur2;
1202       }
1203    }
1204
1205    if (*cur == ',' && !is_vs_input) {
1206       uint i, j;
1207
1208       cur++;
1209       eat_opt_white( &cur );
1210       if (file == TGSI_FILE_RESOURCE) {
1211          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1212             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1213                decl.Resource.Resource = i;
1214                break;
1215             }
1216          }
1217          if (i == TGSI_TEXTURE_COUNT) {
1218             report_error(ctx, "Expected texture target");
1219             return FALSE;
1220          }
1221
1222          cur2 = cur;
1223          eat_opt_white(&cur2);
1224          while (*cur2 == ',') {
1225             cur2++;
1226             eat_opt_white(&cur2);
1227             if (str_match_nocase_whole(&cur2, "RAW")) {
1228                decl.Resource.Raw = 1;
1229
1230             } else if (str_match_nocase_whole(&cur2, "WR")) {
1231                decl.Resource.Writable = 1;
1232
1233             } else {
1234                break;
1235             }
1236             cur = cur2;
1237             eat_opt_white(&cur2);
1238          }
1239
1240          ctx->cur = cur;
1241
1242       } else if (file == TGSI_FILE_SAMPLER_VIEW) {
1243          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1244             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1245                decl.SamplerView.Resource = i;
1246                break;
1247             }
1248          }
1249          if (i == TGSI_TEXTURE_COUNT) {
1250             report_error(ctx, "Expected texture target");
1251             return FALSE;
1252          }
1253          eat_opt_white( &cur );
1254          if (*cur != ',') {
1255             report_error( ctx, "Expected `,'" );
1256             return FALSE;
1257          }
1258          ++cur;
1259          eat_opt_white( &cur );
1260          for (j = 0; j < 4; ++j) {
1261             for (i = 0; i < TGSI_RETURN_TYPE_COUNT; ++i) {
1262                if (str_match_nocase_whole(&cur, tgsi_return_type_names[i])) {
1263                   switch (j) {
1264                   case 0:
1265                      decl.SamplerView.ReturnTypeX = i;
1266                      break;
1267                   case 1:
1268                      decl.SamplerView.ReturnTypeY = i;
1269                      break;
1270                   case 2:
1271                      decl.SamplerView.ReturnTypeZ = i;
1272                      break;
1273                   case 3:
1274                      decl.SamplerView.ReturnTypeW = i;
1275                      break;
1276                   default:
1277                      assert(0);
1278                   }
1279                   break;
1280                }
1281             }
1282             if (i == TGSI_RETURN_TYPE_COUNT) {
1283                if (j == 0 || j >  2) {
1284                   report_error(ctx, "Expected type name");
1285                   return FALSE;
1286                }
1287                break;
1288             } else {
1289                cur2 = cur;
1290                eat_opt_white( &cur2 );
1291                if (*cur2 == ',') {
1292                   cur2++;
1293                   eat_opt_white( &cur2 );
1294                   cur = cur2;
1295                   continue;
1296                } else
1297                   break;
1298             }
1299          }
1300          if (j < 4) {
1301             decl.SamplerView.ReturnTypeY =
1302                decl.SamplerView.ReturnTypeZ =
1303                decl.SamplerView.ReturnTypeW =
1304                decl.SamplerView.ReturnTypeX;
1305          }
1306          ctx->cur = cur;
1307       } else {
1308          if (str_match_nocase_whole(&cur, "LOCAL")) {
1309             decl.Declaration.Local = 1;
1310             ctx->cur = cur;
1311          }
1312
1313          cur = ctx->cur;
1314          eat_opt_white( &cur );
1315          if (*cur == ',') {
1316             cur++;
1317             eat_opt_white( &cur );
1318
1319             for (i = 0; i < TGSI_SEMANTIC_COUNT; i++) {
1320                if (str_match_nocase_whole(&cur, tgsi_semantic_names[i])) {
1321                   uint index;
1322
1323                   cur2 = cur;
1324                   eat_opt_white( &cur2 );
1325                   if (*cur2 == '[') {
1326                      cur2++;
1327                      eat_opt_white( &cur2 );
1328                      if (!parse_uint( &cur2, &index )) {
1329                         report_error( ctx, "Expected literal integer" );
1330                         return FALSE;
1331                      }
1332                      eat_opt_white( &cur2 );
1333                      if (*cur2 != ']') {
1334                         report_error( ctx, "Expected `]'" );
1335                         return FALSE;
1336                      }
1337                      cur2++;
1338
1339                      decl.Semantic.Index = index;
1340
1341                      cur = cur2;
1342                   }
1343
1344                   decl.Declaration.Semantic = 1;
1345                   decl.Semantic.Name = i;
1346
1347                   ctx->cur = cur;
1348                   break;
1349                }
1350             }
1351          }
1352       }
1353    }
1354
1355    cur = ctx->cur;
1356    eat_opt_white( &cur );
1357    if (*cur == ',' && !is_vs_input) {
1358       uint i;
1359
1360       cur++;
1361       eat_opt_white( &cur );
1362       for (i = 0; i < TGSI_INTERPOLATE_COUNT; i++) {
1363          if (str_match_nocase_whole( &cur, tgsi_interpolate_names[i] )) {
1364             decl.Declaration.Interpolate = 1;
1365             decl.Interp.Interpolate = i;
1366
1367             ctx->cur = cur;
1368             break;
1369          }
1370       }
1371       if (i == TGSI_INTERPOLATE_COUNT) {
1372          report_error( ctx, "Expected semantic or interpolate attribute" );
1373          return FALSE;
1374       }
1375    }
1376
1377    cur = ctx->cur;
1378    eat_opt_white( &cur );
1379    if (*cur == ',' && !is_vs_input) {
1380       uint i;
1381
1382       cur++;
1383       eat_opt_white( &cur );
1384       for (i = 0; i < TGSI_INTERPOLATE_LOC_COUNT; i++) {
1385          if (str_match_nocase_whole( &cur, tgsi_interpolate_locations[i] )) {
1386             decl.Interp.Location = i;
1387
1388             ctx->cur = cur;
1389             break;
1390          }
1391       }
1392    }
1393
1394    advance = tgsi_build_full_declaration(
1395       &decl,
1396       ctx->tokens_cur,
1397       ctx->header,
1398       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1399
1400    if (advance == 0)
1401       return FALSE;
1402    ctx->tokens_cur += advance;
1403
1404    return TRUE;
1405 }
1406
1407 static boolean parse_immediate( struct translate_ctx *ctx )
1408 {
1409    struct tgsi_full_immediate imm;
1410    uint advance;
1411    int type;
1412
1413    if (*ctx->cur == '[') {
1414       uint uindex;
1415
1416       ++ctx->cur;
1417
1418       eat_opt_white( &ctx->cur );
1419       if (!parse_uint( &ctx->cur, &uindex )) {
1420          report_error( ctx, "Expected literal unsigned integer" );
1421          return FALSE;
1422       }
1423
1424       if (uindex != ctx->num_immediates) {
1425          report_error( ctx, "Immediates must be sorted" );
1426          return FALSE;
1427       }
1428
1429       eat_opt_white( &ctx->cur );
1430       if (*ctx->cur != ']') {
1431          report_error( ctx, "Expected `]'" );
1432          return FALSE;
1433       }
1434
1435       ctx->cur++;
1436    }
1437
1438    if (!eat_white( &ctx->cur )) {
1439       report_error( ctx, "Syntax error" );
1440       return FALSE;
1441    }
1442    for (type = 0; type < Elements(tgsi_immediate_type_names); ++type) {
1443       if (str_match_nocase_whole(&ctx->cur, tgsi_immediate_type_names[type]))
1444          break;
1445    }
1446    if (type == Elements(tgsi_immediate_type_names)) {
1447       report_error( ctx, "Expected immediate type" );
1448       return FALSE;
1449    }
1450
1451    imm = tgsi_default_full_immediate();
1452    imm.Immediate.NrTokens += 4;
1453    imm.Immediate.DataType = type;
1454    parse_immediate_data(ctx, type, imm.u);
1455
1456    advance = tgsi_build_full_immediate(
1457       &imm,
1458       ctx->tokens_cur,
1459       ctx->header,
1460       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1461    if (advance == 0)
1462       return FALSE;
1463    ctx->tokens_cur += advance;
1464
1465    ctx->num_immediates++;
1466
1467    return TRUE;
1468 }
1469
1470 static boolean
1471 parse_primitive( const char **pcur, uint *primitive )
1472 {
1473    uint i;
1474
1475    for (i = 0; i < PIPE_PRIM_MAX; i++) {
1476       const char *cur = *pcur;
1477
1478       if (str_match_nocase_whole( &cur, tgsi_primitive_names[i])) {
1479          *primitive = i;
1480          *pcur = cur;
1481          return TRUE;
1482       }
1483    }
1484    return FALSE;
1485 }
1486
1487 static boolean
1488 parse_fs_coord_origin( const char **pcur, uint *fs_coord_origin )
1489 {
1490    uint i;
1491
1492    for (i = 0; i < Elements(tgsi_fs_coord_origin_names); i++) {
1493       const char *cur = *pcur;
1494
1495       if (str_match_nocase_whole( &cur, tgsi_fs_coord_origin_names[i])) {
1496          *fs_coord_origin = i;
1497          *pcur = cur;
1498          return TRUE;
1499       }
1500    }
1501    return FALSE;
1502 }
1503
1504 static boolean
1505 parse_fs_coord_pixel_center( const char **pcur, uint *fs_coord_pixel_center )
1506 {
1507    uint i;
1508
1509    for (i = 0; i < Elements(tgsi_fs_coord_pixel_center_names); i++) {
1510       const char *cur = *pcur;
1511
1512       if (str_match_nocase_whole( &cur, tgsi_fs_coord_pixel_center_names[i])) {
1513          *fs_coord_pixel_center = i;
1514          *pcur = cur;
1515          return TRUE;
1516       }
1517    }
1518    return FALSE;
1519 }
1520
1521
1522 static boolean parse_property( struct translate_ctx *ctx )
1523 {
1524    struct tgsi_full_property prop;
1525    uint property_name;
1526    uint values[8];
1527    uint advance;
1528    char id[64];
1529
1530    if (!eat_white( &ctx->cur )) {
1531       report_error( ctx, "Syntax error" );
1532       return FALSE;
1533    }
1534    if (!parse_identifier( &ctx->cur, id )) {
1535       report_error( ctx, "Syntax error" );
1536       return FALSE;
1537    }
1538    for (property_name = 0; property_name < TGSI_PROPERTY_COUNT;
1539         ++property_name) {
1540       if (streq_nocase_uprcase(tgsi_property_names[property_name], id)) {
1541          break;
1542       }
1543    }
1544    if (property_name >= TGSI_PROPERTY_COUNT) {
1545       debug_printf( "\nError: Unknown property : '%s'", id );
1546       return FALSE;
1547    }
1548
1549    eat_opt_white( &ctx->cur );
1550    switch(property_name) {
1551    case TGSI_PROPERTY_GS_INPUT_PRIM:
1552    case TGSI_PROPERTY_GS_OUTPUT_PRIM:
1553       if (!parse_primitive(&ctx->cur, &values[0] )) {
1554          report_error( ctx, "Unknown primitive name as property!" );
1555          return FALSE;
1556       }
1557       if (property_name == TGSI_PROPERTY_GS_INPUT_PRIM &&
1558           ctx->processor == TGSI_PROCESSOR_GEOMETRY) {
1559          ctx->implied_array_size = u_vertices_per_prim(values[0]);
1560       }
1561       break;
1562    case TGSI_PROPERTY_FS_COORD_ORIGIN:
1563       if (!parse_fs_coord_origin(&ctx->cur, &values[0] )) {
1564          report_error( ctx, "Unknown coord origin as property: must be UPPER_LEFT or LOWER_LEFT!" );
1565          return FALSE;
1566       }
1567       break;
1568    case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
1569       if (!parse_fs_coord_pixel_center(&ctx->cur, &values[0] )) {
1570          report_error( ctx, "Unknown coord pixel center as property: must be HALF_INTEGER or INTEGER!" );
1571          return FALSE;
1572       }
1573       break;
1574    case TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS:
1575    default:
1576       if (!parse_uint(&ctx->cur, &values[0] )) {
1577          report_error( ctx, "Expected unsigned integer as property!" );
1578          return FALSE;
1579       }
1580    }
1581
1582    prop = tgsi_default_full_property();
1583    prop.Property.PropertyName = property_name;
1584    prop.Property.NrTokens += 1;
1585    prop.u[0].Data = values[0];
1586
1587    advance = tgsi_build_full_property(
1588       &prop,
1589       ctx->tokens_cur,
1590       ctx->header,
1591       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1592    if (advance == 0)
1593       return FALSE;
1594    ctx->tokens_cur += advance;
1595
1596    return TRUE;
1597 }
1598
1599
1600 static boolean translate( struct translate_ctx *ctx )
1601 {
1602    eat_opt_white( &ctx->cur );
1603    if (!parse_header( ctx ))
1604       return FALSE;
1605
1606    while (*ctx->cur != '\0') {
1607       uint label_val = 0;
1608       if (!eat_white( &ctx->cur )) {
1609          report_error( ctx, "Syntax error" );
1610          return FALSE;
1611       }
1612
1613       if (*ctx->cur == '\0')
1614          break;
1615       if (parse_label( ctx, &label_val )) {
1616          if (!parse_instruction( ctx, TRUE ))
1617             return FALSE;
1618       }
1619       else if (str_match_nocase_whole( &ctx->cur, "DCL" )) {
1620          if (!parse_declaration( ctx ))
1621             return FALSE;
1622       }
1623       else if (str_match_nocase_whole( &ctx->cur, "IMM" )) {
1624          if (!parse_immediate( ctx ))
1625             return FALSE;
1626       }
1627       else if (str_match_nocase_whole( &ctx->cur, "PROPERTY" )) {
1628          if (!parse_property( ctx ))
1629             return FALSE;
1630       }
1631       else if (!parse_instruction( ctx, FALSE )) {
1632          return FALSE;
1633       }
1634    }
1635
1636    return TRUE;
1637 }
1638
1639 boolean
1640 tgsi_text_translate(
1641    const char *text,
1642    struct tgsi_token *tokens,
1643    uint num_tokens )
1644 {
1645    struct translate_ctx ctx = {0};
1646
1647    ctx.text = text;
1648    ctx.cur = text;
1649    ctx.tokens = tokens;
1650    ctx.tokens_cur = tokens;
1651    ctx.tokens_end = tokens + num_tokens;
1652
1653    if (!translate( &ctx ))
1654       return FALSE;
1655
1656    return tgsi_sanity_check( tokens );
1657 }