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[4],
 739    boolean *parsed_swizzle )
 740 {
 741    const char *cur = ctx->cur;
 742
 743    *parsed_swizzle = FALSE;
 744
 745    eat_opt_white( &cur );
 746    if (*cur == '.') {
 747       uint i;
 748
 749       cur++;
 750       eat_opt_white( &cur );
 751       for (i = 0; i < 4; i++) {
 752          if (uprcase( *cur ) == 'X')
 753             swizzle[i] = TGSI_SWIZZLE_X;
 754          else if (uprcase( *cur ) == 'Y')
 755             swizzle[i] = TGSI_SWIZZLE_Y;
 756          else if (uprcase( *cur ) == 'Z')
 757             swizzle[i] = TGSI_SWIZZLE_Z;
 758          else if (uprcase( *cur ) == 'W')
 759             swizzle[i] = TGSI_SWIZZLE_W;
 760          else {
 761             report_error( ctx, "Expected register swizzle component `x', `y', `z' or `w'" );
 762             return FALSE;
 763          }
 764          cur++;
 765       }
 766       *parsed_swizzle = TRUE;
 767       ctx->cur = cur;
 768    }
 769    return TRUE;
 770 }
 771
 772 static boolean
 773 parse_src_operand(
 774    struct translate_ctx *ctx,
 775    struct tgsi_full_src_register *src )
 776 {
 777    uint file;
 778    uint swizzle[4];
 779    boolean parsed_swizzle;
 780    struct parsed_bracket bracket[2];
 781    int parsed_opt_brackets;
 782
 783    if (*ctx->cur == '-') {
 784       ctx->cur++;
 785       eat_opt_white( &ctx->cur );
 786       src->Register.Negate = 1;
 787    }
 788
 789    if (*ctx->cur == '|') {
 790       ctx->cur++;
 791       eat_opt_white( &ctx->cur );
 792       src->Register.Absolute = 1;
 793    }
 794
 795    if (!parse_register_src(ctx, &file, &bracket[0]))
 796       return FALSE;
 797    if (!parse_opt_register_src_bracket(ctx, &bracket[1], &parsed_opt_brackets))
 798       return FALSE;
 799
 800    src->Register.File = file;
 801    if (parsed_opt_brackets) {
 802       src->Register.Dimension = 1;
 803       src->Dimension.Indirect = 0;
 804       src->Dimension.Dimension = 0;
 805       src->Dimension.Index = bracket[0].index;
 806       bracket[0] = bracket[1];
 807    }
 808    src->Register.Index = bracket[0].index;
 809    if (bracket[0].ind_file != TGSI_FILE_NULL) {
 810       src->Register.Indirect = 1;
 811       src->Indirect.File = bracket[0].ind_file;
 812       src->Indirect.Index = bracket[0].ind_index;
 813       src->Indirect.Swizzle = bracket[0].ind_comp;
 814       src->Indirect.ArrayID = bracket[0].ind_array;
 815    }
 816
 817    /* Parse optional swizzle.
 818     */
 819    if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle )) {
 820       if (parsed_swizzle) {
 821          src->Register.SwizzleX = swizzle[0];
 822          src->Register.SwizzleY = swizzle[1];
 823          src->Register.SwizzleZ = swizzle[2];
 824          src->Register.SwizzleW = swizzle[3];
 825       }
 826    }
 827
 828    if (src->Register.Absolute) {
 829       eat_opt_white( &ctx->cur );
 830       if (*ctx->cur != '|') {
 831          report_error( ctx, "Expected `|'" );
 832          return FALSE;
 833       }
 834       ctx->cur++;
 835    }
 836
 837
 838    return TRUE;
 839 }
 840
 841 static boolean
 842 match_inst(const char **pcur,
 843            unsigned *saturate,
 844            const struct tgsi_opcode_info *info)
 845 {
 846    const char *cur = *pcur;
 847
 848    /* simple case: the whole string matches the instruction name */
 849    if (str_match_nocase_whole(&cur, info->mnemonic)) {
 850       *pcur = cur;
 851       *saturate = TGSI_SAT_NONE;
 852       return TRUE;
 853    }
 854
 855    if (str_match_no_case(&cur, info->mnemonic)) {
 856       /* the instruction has a suffix, figure it out */
 857       if (str_match_nocase_whole(&cur, "_SAT")) {
 858          *pcur = cur;
 859          *saturate = TGSI_SAT_ZERO_ONE;
 860          return TRUE;
 861       }
 862
 863       if (str_match_nocase_whole(&cur, "_SATNV")) {
 864          *pcur = cur;
 865          *saturate = TGSI_SAT_MINUS_PLUS_ONE;
 866          return TRUE;
 867       }
 868    }
 869
 870    return FALSE;
 871 }
 872
 873 static boolean
 874 parse_instruction(
 875    struct translate_ctx *ctx,
 876    boolean has_label )
 877 {
 878    uint i;
 879    uint saturate = TGSI_SAT_NONE;
 880    const struct tgsi_opcode_info *info;
 881    struct tgsi_full_instruction inst;
 882    const char *cur;
 883    uint advance;
 884
 885    inst = tgsi_default_full_instruction();
 886
 887    /* Parse predicate.
 888     */
 889    eat_opt_white( &ctx->cur );
 890    if (*ctx->cur == '(') {
 891       uint file;
 892       int index;
 893       uint swizzle[4];
 894       boolean parsed_swizzle;
 895
 896       inst.Instruction.Predicate = 1;
 897
 898       ctx->cur++;
 899       if (*ctx->cur == '!') {
 900          ctx->cur++;
 901          inst.Predicate.Negate = 1;
 902       }
 903
 904       if (!parse_register_1d( ctx, &file, &index ))
 905          return FALSE;
 906
 907       if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle )) {
 908          if (parsed_swizzle) {
 909             inst.Predicate.SwizzleX = swizzle[0];
 910             inst.Predicate.SwizzleY = swizzle[1];
 911             inst.Predicate.SwizzleZ = swizzle[2];
 912             inst.Predicate.SwizzleW = swizzle[3];
 913          }
 914       }
 915
 916       if (*ctx->cur != ')') {
 917          report_error( ctx, "Expected `)'" );
 918          return FALSE;
 919       }
 920
 921       ctx->cur++;
 922    }
 923
 924    /* Parse instruction name.
 925     */
 926    eat_opt_white( &ctx->cur );
 927    for (i = 0; i < TGSI_OPCODE_LAST; i++) {
 928       cur = ctx->cur;
 929
 930       info = tgsi_get_opcode_info( i );
 931       if (match_inst(&cur, &saturate, info)) {
 932          if (info->num_dst + info->num_src + info->is_tex == 0) {
 933             ctx->cur = cur;
 934             break;
 935          }
 936          else if (*cur == '\0' || eat_white( &cur )) {
 937             ctx->cur = cur;
 938             break;
 939          }
 940       }
 941    }
 942    if (i == TGSI_OPCODE_LAST) {
 943       if (has_label)
 944          report_error( ctx, "Unknown opcode" );
 945       else
 946          report_error( ctx, "Expected `DCL', `IMM' or a label" );
 947       return FALSE;
 948    }
 949
 950    inst.Instruction.Opcode = i;
 951    inst.Instruction.Saturate = saturate;
 952    inst.Instruction.NumDstRegs = info->num_dst;
 953    inst.Instruction.NumSrcRegs = info->num_src;
 954
 955    if (i >= TGSI_OPCODE_SAMPLE && i <= TGSI_OPCODE_GATHER4) {
 956       /*
 957        * These are not considered tex opcodes here (no additional
 958        * target argument) however we're required to set the Texture
 959        * bit so we can set the number of tex offsets (offsets aren't
 960        * actually handled here yet in any case).
 961        */
 962       inst.Instruction.Texture = 1;
 963       inst.Texture.Texture = TGSI_TEXTURE_UNKNOWN;
 964    }
 965
 966    /* Parse instruction operands.
 967     */
 968    for (i = 0; i < info->num_dst + info->num_src + info->is_tex; i++) {
 969       if (i > 0) {
 970          eat_opt_white( &ctx->cur );
 971          if (*ctx->cur != ',') {
 972             report_error( ctx, "Expected `,'" );
 973             return FALSE;
 974          }
 975          ctx->cur++;
 976          eat_opt_white( &ctx->cur );
 977       }
 978
 979       if (i < info->num_dst) {
 980          if (!parse_dst_operand( ctx, &inst.Dst[i] ))
 981             return FALSE;
 982       }
 983       else if (i < info->num_dst + info->num_src) {
 984          if (!parse_src_operand( ctx, &inst.Src[i - info->num_dst] ))
 985             return FALSE;
 986       }
 987       else {
 988          uint j;
 989
 990          for (j = 0; j < TGSI_TEXTURE_COUNT; j++) {
 991             if (str_match_nocase_whole( &ctx->cur, tgsi_texture_names[j] )) {
 992                inst.Instruction.Texture = 1;
 993                inst.Texture.Texture = j;
 994                break;
 995             }
 996          }
 997          if (j == TGSI_TEXTURE_COUNT) {
 998             report_error( ctx, "Expected texture target" );
 999             return FALSE;
1000          }
1001       }
1002    }
1003
1004    cur = ctx->cur;
1005    eat_opt_white( &cur );
1006    if (info->is_branch && *cur == ':') {
1007       uint target;
1008
1009       cur++;
1010       eat_opt_white( &cur );
1011       if (!parse_uint( &cur, &target )) {
1012          report_error( ctx, "Expected a label" );
1013          return FALSE;
1014       }
1015       inst.Instruction.Label = 1;
1016       inst.Label.Label = target;
1017       ctx->cur = cur;
1018    }
1019
1020    advance = tgsi_build_full_instruction(
1021       &inst,
1022       ctx->tokens_cur,
1023       ctx->header,
1024       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1025    if (advance == 0)
1026       return FALSE;
1027    ctx->tokens_cur += advance;
1028
1029    return TRUE;
1030 }
1031
1032 /* parses a 4-touple of the form {x, y, z, w}
1033  * where x, y, z, w are numbers */
1034 static boolean parse_immediate_data(struct translate_ctx *ctx, unsigned type,
1035                                     union tgsi_immediate_data *values)
1036 {
1037    unsigned i;
1038    int ret;
1039
1040    eat_opt_white( &ctx->cur );
1041    if (*ctx->cur != '{') {
1042       report_error( ctx, "Expected `{'" );
1043       return FALSE;
1044    }
1045    ctx->cur++;
1046    for (i = 0; i < 4; i++) {
1047       eat_opt_white( &ctx->cur );
1048       if (i > 0) {
1049          if (*ctx->cur != ',') {
1050             report_error( ctx, "Expected `,'" );
1051             return FALSE;
1052          }
1053          ctx->cur++;
1054          eat_opt_white( &ctx->cur );
1055       }
1056
1057       switch (type) {
1058       case TGSI_IMM_FLOAT32:
1059          ret = parse_float(&ctx->cur, &values[i].Float);
1060          break;
1061       case TGSI_IMM_UINT32:
1062          ret = parse_uint(&ctx->cur, &values[i].Uint);
1063          break;
1064       case TGSI_IMM_INT32:
1065          ret = parse_int(&ctx->cur, &values[i].Int);
1066          break;
1067       default:
1068          assert(0);
1069          ret = FALSE;
1070          break;
1071       }
1072
1073       if (!ret) {
1074          report_error( ctx, "Expected immediate constant" );
1075          return FALSE;
1076       }
1077    }
1078    eat_opt_white( &ctx->cur );
1079    if (*ctx->cur != '}') {
1080       report_error( ctx, "Expected `}'" );
1081       return FALSE;
1082    }
1083    ctx->cur++;
1084
1085    return TRUE;
1086 }
1087
1088 static boolean parse_declaration( struct translate_ctx *ctx )
1089 {
1090    struct tgsi_full_declaration decl;
1091    uint file;
1092    struct parsed_dcl_bracket brackets[2];
1093    int num_brackets;
1094    uint writemask;
1095    const char *cur, *cur2;
1096    uint advance;
1097    boolean is_vs_input;
1098
1099    if (!eat_white( &ctx->cur )) {
1100       report_error( ctx, "Syntax error" );
1101       return FALSE;
1102    }
1103    if (!parse_register_dcl( ctx, &file, brackets, &num_brackets))
1104       return FALSE;
1105    if (!parse_opt_writemask( ctx, &writemask ))
1106       return FALSE;
1107
1108    decl = tgsi_default_full_declaration();
1109    decl.Declaration.File = file;
1110    decl.Declaration.UsageMask = writemask;
1111
1112    if (num_brackets == 1) {
1113       decl.Range.First = brackets[0].first;
1114       decl.Range.Last = brackets[0].last;
1115    } else {
1116       decl.Range.First = brackets[1].first;
1117       decl.Range.Last = brackets[1].last;
1118
1119       decl.Declaration.Dimension = 1;
1120       decl.Dim.Index2D = brackets[0].first;
1121    }
1122
1123    is_vs_input = (file == TGSI_FILE_INPUT &&
1124                   ctx->processor == TGSI_PROCESSOR_VERTEX);
1125
1126    cur = ctx->cur;
1127    eat_opt_white( &cur );
1128    if (*cur == ',') {
1129       cur2 = cur;
1130       cur2++;
1131       eat_opt_white( &cur2 );
1132       if (str_match_nocase_whole( &cur2, "ARRAY" )) {
1133          int arrayid;
1134          if (*cur2 != '(') {
1135             report_error( ctx, "Expected `('" );
1136             return FALSE;
1137          }
1138          cur2++;
1139          eat_opt_white( &cur2 );
1140          if (!parse_int( &cur2, &arrayid )) {
1141             report_error( ctx, "Expected `,'" );
1142             return FALSE;
1143          }
1144          eat_opt_white( &cur2 );
1145          if (*cur2 != ')') {
1146             report_error( ctx, "Expected `)'" );
1147             return FALSE;
1148          }
1149          cur2++;
1150          decl.Declaration.Array = 1;
1151          decl.Array.ArrayID = arrayid;
1152          ctx->cur = cur = cur2;
1153       }
1154    }
1155
1156    if (*cur == ',' && !is_vs_input) {
1157       uint i, j;
1158
1159       cur++;
1160       eat_opt_white( &cur );
1161       if (file == TGSI_FILE_RESOURCE) {
1162          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1163             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1164                decl.Resource.Resource = i;
1165                break;
1166             }
1167          }
1168          if (i == TGSI_TEXTURE_COUNT) {
1169             report_error(ctx, "Expected texture target");
1170             return FALSE;
1171          }
1172
1173          cur2 = cur;
1174          eat_opt_white(&cur2);
1175          while (*cur2 == ',') {
1176             cur2++;
1177             eat_opt_white(&cur2);
1178             if (str_match_nocase_whole(&cur2, "RAW")) {
1179                decl.Resource.Raw = 1;
1180
1181             } else if (str_match_nocase_whole(&cur2, "WR")) {
1182                decl.Resource.Writable = 1;
1183
1184             } else {
1185                break;
1186             }
1187             cur = cur2;
1188             eat_opt_white(&cur2);
1189          }
1190
1191          ctx->cur = cur;
1192
1193       } else if (file == TGSI_FILE_SAMPLER_VIEW) {
1194          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1195             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1196                decl.SamplerView.Resource = i;
1197                break;
1198             }
1199          }
1200          if (i == TGSI_TEXTURE_COUNT) {
1201             report_error(ctx, "Expected texture target");
1202             return FALSE;
1203          }
1204          eat_opt_white( &cur );
1205          if (*cur != ',') {
1206             report_error( ctx, "Expected `,'" );
1207             return FALSE;
1208          }
1209          ++cur;
1210          eat_opt_white( &cur );
1211          for (j = 0; j < 4; ++j) {
1212             for (i = 0; i < PIPE_TYPE_COUNT; ++i) {
1213                if (str_match_nocase_whole(&cur, tgsi_type_names[i])) {
1214                   switch (j) {
1215                   case 0:
1216                      decl.SamplerView.ReturnTypeX = i;
1217                      break;
1218                   case 1:
1219                      decl.SamplerView.ReturnTypeY = i;
1220                      break;
1221                   case 2:
1222                      decl.SamplerView.ReturnTypeZ = i;
1223                      break;
1224                   case 3:
1225                      decl.SamplerView.ReturnTypeW = i;
1226                      break;
1227                   default:
1228                      assert(0);
1229                   }
1230                   break;
1231                }
1232             }
1233             if (i == PIPE_TYPE_COUNT) {
1234                if (j == 0 || j >  2) {
1235                   report_error(ctx, "Expected type name");
1236                   return FALSE;
1237                }
1238                break;
1239             } else {
1240                cur2 = cur;
1241                eat_opt_white( &cur2 );
1242                if (*cur2 == ',') {
1243                   cur2++;
1244                   eat_opt_white( &cur2 );
1245                   cur = cur2;
1246                   continue;
1247                } else
1248                   break;
1249             }
1250          }
1251          if (j < 4) {
1252             decl.SamplerView.ReturnTypeY =
1253                decl.SamplerView.ReturnTypeZ =
1254                decl.SamplerView.ReturnTypeW =
1255                decl.SamplerView.ReturnTypeX;
1256          }
1257          ctx->cur = cur;
1258       } else {
1259          if (str_match_nocase_whole(&cur, "LOCAL")) {
1260             decl.Declaration.Local = 1;
1261             ctx->cur = cur;
1262          }
1263
1264          cur = ctx->cur;
1265          eat_opt_white( &cur );
1266          if (*cur == ',') {
1267             cur++;
1268             eat_opt_white( &cur );
1269
1270             for (i = 0; i < TGSI_SEMANTIC_COUNT; i++) {
1271                if (str_match_nocase_whole(&cur, tgsi_semantic_names[i])) {
1272                   uint index;
1273
1274                   cur2 = cur;
1275                   eat_opt_white( &cur2 );
1276                   if (*cur2 == '[') {
1277                      cur2++;
1278                      eat_opt_white( &cur2 );
1279                      if (!parse_uint( &cur2, &index )) {
1280                         report_error( ctx, "Expected literal integer" );
1281                         return FALSE;
1282                      }
1283                      eat_opt_white( &cur2 );
1284                      if (*cur2 != ']') {
1285                         report_error( ctx, "Expected `]'" );
1286                         return FALSE;
1287                      }
1288                      cur2++;
1289
1290                      decl.Semantic.Index = index;
1291
1292                      cur = cur2;
1293                   }
1294
1295                   decl.Declaration.Semantic = 1;
1296                   decl.Semantic.Name = i;
1297
1298                   ctx->cur = cur;
1299                   break;
1300                }
1301             }
1302          }
1303       }
1304    }
1305
1306    cur = ctx->cur;
1307    eat_opt_white( &cur );
1308    if (*cur == ',' && !is_vs_input) {
1309       uint i;
1310
1311       cur++;
1312       eat_opt_white( &cur );
1313       for (i = 0; i < TGSI_INTERPOLATE_COUNT; i++) {
1314          if (str_match_nocase_whole( &cur, tgsi_interpolate_names[i] )) {
1315             decl.Declaration.Interpolate = 1;
1316             decl.Interp.Interpolate = i;
1317
1318             ctx->cur = cur;
1319             break;
1320          }
1321       }
1322       if (i == TGSI_INTERPOLATE_COUNT) {
1323          report_error( ctx, "Expected semantic or interpolate attribute" );
1324          return FALSE;
1325       }
1326    }
1327
1328    advance = tgsi_build_full_declaration(
1329       &decl,
1330       ctx->tokens_cur,
1331       ctx->header,
1332       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1333
1334    if (advance == 0)
1335       return FALSE;
1336    ctx->tokens_cur += advance;
1337
1338    return TRUE;
1339 }
1340
1341 static boolean parse_immediate( struct translate_ctx *ctx )
1342 {
1343    struct tgsi_full_immediate imm;
1344    uint advance;
1345    int type;
1346
1347    if (*ctx->cur == '[') {
1348       uint uindex;
1349
1350       ++ctx->cur;
1351
1352       eat_opt_white( &ctx->cur );
1353       if (!parse_uint( &ctx->cur, &uindex )) {
1354          report_error( ctx, "Expected literal unsigned integer" );
1355          return FALSE;
1356       }
1357
1358       if (uindex != ctx->num_immediates) {
1359          report_error( ctx, "Immediates must be sorted" );
1360          return FALSE;
1361       }
1362
1363       eat_opt_white( &ctx->cur );
1364       if (*ctx->cur != ']') {
1365          report_error( ctx, "Expected `]'" );
1366          return FALSE;
1367       }
1368
1369       ctx->cur++;
1370    }
1371
1372    if (!eat_white( &ctx->cur )) {
1373       report_error( ctx, "Syntax error" );
1374       return FALSE;
1375    }
1376    for (type = 0; type < Elements(tgsi_immediate_type_names); ++type) {
1377       if (str_match_nocase_whole(&ctx->cur, tgsi_immediate_type_names[type]))
1378          break;
1379    }
1380    if (type == Elements(tgsi_immediate_type_names)) {
1381       report_error( ctx, "Expected immediate type" );
1382       return FALSE;
1383    }
1384
1385    imm = tgsi_default_full_immediate();
1386    imm.Immediate.NrTokens += 4;
1387    imm.Immediate.DataType = type;
1388    parse_immediate_data(ctx, type, imm.u);
1389
1390    advance = tgsi_build_full_immediate(
1391       &imm,
1392       ctx->tokens_cur,
1393       ctx->header,
1394       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1395    if (advance == 0)
1396       return FALSE;
1397    ctx->tokens_cur += advance;
1398
1399    ctx->num_immediates++;
1400
1401    return TRUE;
1402 }
1403
1404 static boolean
1405 parse_primitive( const char **pcur, uint *primitive )
1406 {
1407    uint i;
1408
1409    for (i = 0; i < PIPE_PRIM_MAX; i++) {
1410       const char *cur = *pcur;
1411
1412       if (str_match_nocase_whole( &cur, tgsi_primitive_names[i])) {
1413          *primitive = i;
1414          *pcur = cur;
1415          return TRUE;
1416       }
1417    }
1418    return FALSE;
1419 }
1420
1421 static boolean
1422 parse_fs_coord_origin( const char **pcur, uint *fs_coord_origin )
1423 {
1424    uint i;
1425
1426    for (i = 0; i < Elements(tgsi_fs_coord_origin_names); i++) {
1427       const char *cur = *pcur;
1428
1429       if (str_match_nocase_whole( &cur, tgsi_fs_coord_origin_names[i])) {
1430          *fs_coord_origin = i;
1431          *pcur = cur;
1432          return TRUE;
1433       }
1434    }
1435    return FALSE;
1436 }
1437
1438 static boolean
1439 parse_fs_coord_pixel_center( const char **pcur, uint *fs_coord_pixel_center )
1440 {
1441    uint i;
1442
1443    for (i = 0; i < Elements(tgsi_fs_coord_pixel_center_names); i++) {
1444       const char *cur = *pcur;
1445
1446       if (str_match_nocase_whole( &cur, tgsi_fs_coord_pixel_center_names[i])) {
1447          *fs_coord_pixel_center = i;
1448          *pcur = cur;
1449          return TRUE;
1450       }
1451    }
1452    return FALSE;
1453 }
1454
1455
1456 static boolean parse_property( struct translate_ctx *ctx )
1457 {
1458    struct tgsi_full_property prop;
1459    uint property_name;
1460    uint values[8];
1461    uint advance;
1462    char id[64];
1463
1464    if (!eat_white( &ctx->cur )) {
1465       report_error( ctx, "Syntax error" );
1466       return FALSE;
1467    }
1468    if (!parse_identifier( &ctx->cur, id )) {
1469       report_error( ctx, "Syntax error" );
1470       return FALSE;
1471    }
1472    for (property_name = 0; property_name < TGSI_PROPERTY_COUNT;
1473         ++property_name) {
1474       if (streq_nocase_uprcase(tgsi_property_names[property_name], id)) {
1475          break;
1476       }
1477    }
1478    if (property_name >= TGSI_PROPERTY_COUNT) {
1479       debug_printf( "\nError: Unknown property : '%s'", id );
1480       return FALSE;
1481    }
1482
1483    eat_opt_white( &ctx->cur );
1484    switch(property_name) {
1485    case TGSI_PROPERTY_GS_INPUT_PRIM:
1486    case TGSI_PROPERTY_GS_OUTPUT_PRIM:
1487       if (!parse_primitive(&ctx->cur, &values[0] )) {
1488          report_error( ctx, "Unknown primitive name as property!" );
1489          return FALSE;
1490       }
1491       if (property_name == TGSI_PROPERTY_GS_INPUT_PRIM &&
1492           ctx->processor == TGSI_PROCESSOR_GEOMETRY) {
1493          ctx->implied_array_size = u_vertices_per_prim(values[0]);
1494       }
1495       break;
1496    case TGSI_PROPERTY_FS_COORD_ORIGIN:
1497       if (!parse_fs_coord_origin(&ctx->cur, &values[0] )) {
1498          report_error( ctx, "Unknown coord origin as property: must be UPPER_LEFT or LOWER_LEFT!" );
1499          return FALSE;
1500       }
1501       break;
1502    case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
1503       if (!parse_fs_coord_pixel_center(&ctx->cur, &values[0] )) {
1504          report_error( ctx, "Unknown coord pixel center as property: must be HALF_INTEGER or INTEGER!" );
1505          return FALSE;
1506       }
1507       break;
1508    case TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS:
1509    default:
1510       if (!parse_uint(&ctx->cur, &values[0] )) {
1511          report_error( ctx, "Expected unsigned integer as property!" );
1512          return FALSE;
1513       }
1514    }
1515
1516    prop = tgsi_default_full_property();
1517    prop.Property.PropertyName = property_name;
1518    prop.Property.NrTokens += 1;
1519    prop.u[0].Data = values[0];
1520
1521    advance = tgsi_build_full_property(
1522       &prop,
1523       ctx->tokens_cur,
1524       ctx->header,
1525       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1526    if (advance == 0)
1527       return FALSE;
1528    ctx->tokens_cur += advance;
1529
1530    return TRUE;
1531 }
1532
1533
1534 static boolean translate( struct translate_ctx *ctx )
1535 {
1536    eat_opt_white( &ctx->cur );
1537    if (!parse_header( ctx ))
1538       return FALSE;
1539
1540    while (*ctx->cur != '\0') {
1541       uint label_val = 0;
1542       if (!eat_white( &ctx->cur )) {
1543          report_error( ctx, "Syntax error" );
1544          return FALSE;
1545       }
1546
1547       if (*ctx->cur == '\0')
1548          break;
1549       if (parse_label( ctx, &label_val )) {
1550          if (!parse_instruction( ctx, TRUE ))
1551             return FALSE;
1552       }
1553       else if (str_match_nocase_whole( &ctx->cur, "DCL" )) {
1554          if (!parse_declaration( ctx ))
1555             return FALSE;
1556       }
1557       else if (str_match_nocase_whole( &ctx->cur, "IMM" )) {
1558          if (!parse_immediate( ctx ))
1559             return FALSE;
1560       }
1561       else if (str_match_nocase_whole( &ctx->cur, "PROPERTY" )) {
1562          if (!parse_property( ctx ))
1563             return FALSE;
1564       }
1565       else if (!parse_instruction( ctx, FALSE )) {
1566          return FALSE;
1567       }
1568    }
1569
1570    return TRUE;
1571 }
1572
1573 boolean
1574 tgsi_text_translate(
1575    const char *text,
1576    struct tgsi_token *tokens,
1577    uint num_tokens )
1578 {
1579    struct translate_ctx ctx = {0};
1580
1581    ctx.text = text;
1582    ctx.cur = text;
1583    ctx.tokens = tokens;
1584    ctx.tokens_cur = tokens;
1585    ctx.tokens_end = tokens + num_tokens;
1586
1587    if (!translate( &ctx ))
1588       return FALSE;
1589
1590    return tgsi_sanity_check( tokens );
1591 }