src/gallium/auxiliary/tgsi/tgsi_dump.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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_string.h"
  30 #include "util/u_math.h"
  31 #include "util/u_memory.h"
  32 #include "tgsi_dump.h"
  33 #include "tgsi_info.h"
  34 #include "tgsi_iterate.h"
  35 #include "tgsi_strings.h"
  36
  37
  38 /** Number of spaces to indent for IF/LOOP/etc */
  39 static const int indent_spaces = 3;
  40
  41
  42 struct dump_ctx
  43 {
  44    struct tgsi_iterate_context iter;
  45
  46    uint instno;
  47    uint immno;
  48    int indent;
  49
  50    uint indentation;
  51
  52    void (*dump_printf)(struct dump_ctx *ctx, const char *format, ...);
  53 };
  54
  55 static void
  56 dump_ctx_printf(struct dump_ctx *ctx, const char *format, ...)
  57 {
  58    va_list ap;
  59    (void)ctx;
  60    va_start(ap, format);
  61    _debug_vprintf(format, ap);
  62    va_end(ap);
  63 }
  64
  65 static void
  66 dump_enum(
  67    struct dump_ctx *ctx,
  68    uint e,
  69    const char **enums,
  70    uint enum_count )
  71 {
  72    if (e >= enum_count)
  73       ctx->dump_printf( ctx, "%u", e );
  74    else
  75       ctx->dump_printf( ctx, "%s", enums[e] );
  76 }
  77
  78 #define EOL()           ctx->dump_printf( ctx, "\n" )
  79 #define TXT(S)          ctx->dump_printf( ctx, "%s", S )
  80 #define CHR(C)          ctx->dump_printf( ctx, "%c", C )
  81 #define UIX(I)          ctx->dump_printf( ctx, "0x%x", I )
  82 #define UID(I)          ctx->dump_printf( ctx, "%u", I )
  83 #define INSTID(I)       ctx->dump_printf( ctx, "% 3u", I )
  84 #define SID(I)          ctx->dump_printf( ctx, "%d", I )
  85 #define FLT(F)          ctx->dump_printf( ctx, "%10.4f", F )
  86 #define ENM(E,ENUMS)    dump_enum( ctx, E, ENUMS, sizeof( ENUMS ) / sizeof( *ENUMS ) )
  87
  88 const char *
  89 tgsi_swizzle_names[4] =
  90 {
  91    "x",
  92    "y",
  93    "z",
  94    "w"
  95 };
  96
  97 static void
  98 _dump_register_src(
  99    struct dump_ctx *ctx,
 100    const struct tgsi_full_src_register *src )
 101 {
 102    ENM(src->Register.File, tgsi_file_names);
 103    if (src->Register.Dimension) {
 104       if (src->Dimension.Indirect) {
 105          CHR( '[' );
 106          ENM( src->DimIndirect.File, tgsi_file_names );
 107          CHR( '[' );
 108          SID( src->DimIndirect.Index );
 109          TXT( "]." );
 110          ENM( src->DimIndirect.SwizzleX, tgsi_swizzle_names );
 111          if (src->Dimension.Index != 0) {
 112             if (src->Dimension.Index > 0)
 113                CHR( '+' );
 114             SID( src->Dimension.Index );
 115          }
 116          CHR( ']' );
 117       } else {
 118          CHR('[');
 119          SID(src->Dimension.Index);
 120          CHR(']');
 121       }
 122    }
 123    if (src->Register.Indirect) {
 124       CHR( '[' );
 125       ENM( src->Indirect.File, tgsi_file_names );
 126       CHR( '[' );
 127       SID( src->Indirect.Index );
 128       TXT( "]." );
 129       ENM( src->Indirect.SwizzleX, tgsi_swizzle_names );
 130       if (src->Register.Index != 0) {
 131          if (src->Register.Index > 0)
 132             CHR( '+' );
 133          SID( src->Register.Index );
 134       }
 135       CHR( ']' );
 136    } else {
 137       CHR( '[' );
 138       SID( src->Register.Index );
 139       CHR( ']' );
 140    }
 141 }
 142
 143
 144 static void
 145 _dump_register_dst(
 146    struct dump_ctx *ctx,
 147    const struct tgsi_full_dst_register *dst )
 148 {
 149    ENM(dst->Register.File, tgsi_file_names);
 150    if (dst->Register.Dimension) {
 151       if (dst->Dimension.Indirect) {
 152          CHR( '[' );
 153          ENM( dst->DimIndirect.File, tgsi_file_names );
 154          CHR( '[' );
 155          SID( dst->DimIndirect.Index );
 156          TXT( "]." );
 157          ENM( dst->DimIndirect.SwizzleX, tgsi_swizzle_names );
 158          if (dst->Dimension.Index != 0) {
 159             if (dst->Dimension.Index > 0)
 160                CHR( '+' );
 161             SID( dst->Dimension.Index );
 162          }
 163          CHR( ']' );
 164       } else {
 165          CHR('[');
 166          SID(dst->Dimension.Index);
 167          CHR(']');
 168       }
 169    }
 170    if (dst->Register.Indirect) {
 171       CHR( '[' );
 172       ENM( dst->Indirect.File, tgsi_file_names );
 173       CHR( '[' );
 174       SID( dst->Indirect.Index );
 175       TXT( "]." );
 176       ENM( dst->Indirect.SwizzleX, tgsi_swizzle_names );
 177       if (dst->Register.Index != 0) {
 178          if (dst->Register.Index > 0)
 179             CHR( '+' );
 180          SID( dst->Register.Index );
 181       }
 182       CHR( ']' );
 183    } else {
 184       CHR( '[' );
 185       SID( dst->Register.Index );
 186       CHR( ']' );
 187    }
 188 }
 189 static void
 190 _dump_writemask(
 191    struct dump_ctx *ctx,
 192    uint writemask )
 193 {
 194    if (writemask != TGSI_WRITEMASK_XYZW) {
 195       CHR( '.' );
 196       if (writemask & TGSI_WRITEMASK_X)
 197          CHR( 'x' );
 198       if (writemask & TGSI_WRITEMASK_Y)
 199          CHR( 'y' );
 200       if (writemask & TGSI_WRITEMASK_Z)
 201          CHR( 'z' );
 202       if (writemask & TGSI_WRITEMASK_W)
 203          CHR( 'w' );
 204    }
 205 }
 206
 207 static void
 208 dump_imm_data(struct tgsi_iterate_context *iter,
 209               union tgsi_immediate_data *data,
 210               unsigned num_tokens,
 211               unsigned data_type)
 212 {
 213    struct dump_ctx *ctx = (struct dump_ctx *)iter;
 214    unsigned i ;
 215
 216    TXT( " {" );
 217
 218    assert( num_tokens <= 4 );
 219    for (i = 0; i < num_tokens; i++) {
 220       switch (data_type) {
 221       case TGSI_IMM_FLOAT32:
 222          FLT( data[i].Float );
 223          break;
 224       case TGSI_IMM_UINT32:
 225          UID(data[i].Uint);
 226          break;
 227       case TGSI_IMM_INT32:
 228          SID(data[i].Int);
 229          break;
 230       default:
 231          assert( 0 );
 232       }
 233
 234       if (i < num_tokens - 1)
 235          TXT( ", " );
 236    }
 237    TXT( "}" );
 238 }
 239
 240 static boolean
 241 iter_declaration(
 242    struct tgsi_iterate_context *iter,
 243    struct tgsi_full_declaration *decl )
 244 {
 245    struct dump_ctx *ctx = (struct dump_ctx *)iter;
 246
 247    TXT( "DCL " );
 248
 249    ENM(decl->Declaration.File, tgsi_file_names);
 250
 251    /* all geometry shader inputs are two dimensional */
 252    if (decl->Declaration.File == TGSI_FILE_INPUT &&
 253        iter->processor.Processor == TGSI_PROCESSOR_GEOMETRY) {
 254       TXT("[]");
 255    }
 256
 257    if (decl->Declaration.Dimension) {
 258       CHR('[');
 259       SID(decl->Dim.Index2D);
 260       CHR(']');
 261    }
 262
 263    CHR('[');
 264    SID(decl->Range.First);
 265    if (decl->Range.First != decl->Range.Last) {
 266       TXT("..");
 267       SID(decl->Range.Last);
 268    }
 269    CHR(']');
 270
 271    _dump_writemask(
 272       ctx,
 273       decl->Declaration.UsageMask );
 274
 275    if (decl->Declaration.Local)
 276       TXT( ", LOCAL" );
 277
 278    if (decl->Declaration.Semantic) {
 279       TXT( ", " );
 280       ENM( decl->Semantic.Name, tgsi_semantic_names );
 281       if (decl->Semantic.Index != 0 ||
 282           decl->Semantic.Name == TGSI_SEMANTIC_GENERIC) {
 283          CHR( '[' );
 284          UID( decl->Semantic.Index );
 285          CHR( ']' );
 286       }
 287    }
 288
 289    if (decl->Declaration.File == TGSI_FILE_RESOURCE) {
 290       TXT(", ");
 291       ENM(decl->Resource.Resource, tgsi_texture_names);
 292       if (decl->Resource.Writable)
 293          TXT(", WR");
 294       if (decl->Resource.Raw)
 295          TXT(", RAW");
 296    }
 297
 298    if (decl->Declaration.File == TGSI_FILE_SAMPLER_VIEW) {
 299       TXT(", ");
 300       ENM(decl->SamplerView.Resource, tgsi_texture_names);
 301       TXT(", ");
 302       if ((decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeY) &&
 303           (decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeZ) &&
 304           (decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeW)) {
 305          ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
 306       } else {
 307          ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
 308          TXT(", ");
 309          ENM(decl->SamplerView.ReturnTypeY, tgsi_type_names);
 310          TXT(", ");
 311          ENM(decl->SamplerView.ReturnTypeZ, tgsi_type_names);
 312          TXT(", ");
 313          ENM(decl->SamplerView.ReturnTypeW, tgsi_type_names);
 314       }
 315    }
 316
 317    if (decl->Declaration.Interpolate) {
 318       if (iter->processor.Processor == TGSI_PROCESSOR_FRAGMENT &&
 319           decl->Declaration.File == TGSI_FILE_INPUT)
 320       {
 321          TXT( ", " );
 322          ENM( decl->Interp.Interpolate, tgsi_interpolate_names );
 323       }
 324
 325       if (decl->Interp.Centroid) {
 326          TXT( ", CENTROID" );
 327       }
 328
 329       if (decl->Interp.CylindricalWrap) {
 330          TXT(", CYLWRAP_");
 331          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_X) {
 332             CHR('X');
 333          }
 334          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Y) {
 335             CHR('Y');
 336          }
 337          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Z) {
 338             CHR('Z');
 339          }
 340          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_W) {
 341             CHR('W');
 342          }
 343       }
 344    }
 345
 346    if (decl->Declaration.Invariant) {
 347       TXT( ", INVARIANT" );
 348    }
 349
 350    EOL();
 351
 352    return TRUE;
 353 }
 354
 355 void
 356 tgsi_dump_declaration(
 357    const struct tgsi_full_declaration *decl )
 358 {
 359    struct dump_ctx ctx;
 360
 361    ctx.dump_printf = dump_ctx_printf;
 362
 363    iter_declaration( &ctx.iter, (struct tgsi_full_declaration *)decl );
 364 }
 365
 366 static boolean
 367 iter_property(
 368    struct tgsi_iterate_context *iter,
 369    struct tgsi_full_property *prop )
 370 {
 371    unsigned i;
 372    struct dump_ctx *ctx = (struct dump_ctx *)iter;
 373
 374    TXT( "PROPERTY " );
 375    ENM(prop->Property.PropertyName, tgsi_property_names);
 376
 377    if (prop->Property.NrTokens > 1)
 378       TXT(" ");
 379
 380    for (i = 0; i < prop->Property.NrTokens - 1; ++i) {
 381       switch (prop->Property.PropertyName) {
 382       case TGSI_PROPERTY_GS_INPUT_PRIM:
 383       case TGSI_PROPERTY_GS_OUTPUT_PRIM:
 384          ENM(prop->u[i].Data, tgsi_primitive_names);
 385          break;
 386       case TGSI_PROPERTY_FS_COORD_ORIGIN:
 387          ENM(prop->u[i].Data, tgsi_fs_coord_origin_names);
 388          break;
 389       case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
 390          ENM(prop->u[i].Data, tgsi_fs_coord_pixel_center_names);
 391          break;
 392       default:
 393          SID( prop->u[i].Data );
 394          break;
 395       }
 396       if (i < prop->Property.NrTokens - 2)
 397          TXT( ", " );
 398    }
 399    EOL();
 400
 401    return TRUE;
 402 }
 403
 404 void tgsi_dump_property(
 405    const struct tgsi_full_property *prop )
 406 {
 407    struct dump_ctx ctx;
 408
 409    ctx.dump_printf = dump_ctx_printf;
 410
 411    iter_property( &ctx.iter, (struct tgsi_full_property *)prop );
 412 }
 413
 414 static boolean
 415 iter_immediate(
 416    struct tgsi_iterate_context *iter,
 417    struct tgsi_full_immediate *imm )
 418 {
 419    struct dump_ctx *ctx = (struct dump_ctx *) iter;
 420
 421    TXT( "IMM[" );
 422    SID( ctx->immno++ );
 423    TXT( "] " );
 424    ENM( imm->Immediate.DataType, tgsi_immediate_type_names );
 425
 426    dump_imm_data(iter, imm->u, imm->Immediate.NrTokens - 1,
 427                  imm->Immediate.DataType);
 428
 429    EOL();
 430
 431    return TRUE;
 432 }
 433
 434 void
 435 tgsi_dump_immediate(
 436    const struct tgsi_full_immediate *imm )
 437 {
 438    struct dump_ctx ctx;
 439
 440    ctx.dump_printf = dump_ctx_printf;
 441
 442    iter_immediate( &ctx.iter, (struct tgsi_full_immediate *)imm );
 443 }
 444
 445 static boolean
 446 iter_instruction(
 447    struct tgsi_iterate_context *iter,
 448    struct tgsi_full_instruction *inst )
 449 {
 450    struct dump_ctx *ctx = (struct dump_ctx *) iter;
 451    uint instno = ctx->instno++;
 452    const struct tgsi_opcode_info *info = tgsi_get_opcode_info( inst->Instruction.Opcode );
 453    uint i;
 454    boolean first_reg = TRUE;
 455
 456    INSTID( instno );
 457    TXT( ": " );
 458
 459    ctx->indent -= info->pre_dedent;
 460    for(i = 0; (int)i < ctx->indent; ++i)
 461       TXT( "  " );
 462    ctx->indent += info->post_indent;
 463
 464    if (inst->Instruction.Predicate) {
 465       CHR( '(' );
 466
 467       if (inst->Predicate.Negate)
 468          CHR( '!' );
 469
 470       TXT( "PRED[" );
 471       SID( inst->Predicate.Index );
 472       CHR( ']' );
 473
 474       if (inst->Predicate.SwizzleX != TGSI_SWIZZLE_X ||
 475           inst->Predicate.SwizzleY != TGSI_SWIZZLE_Y ||
 476           inst->Predicate.SwizzleZ != TGSI_SWIZZLE_Z ||
 477           inst->Predicate.SwizzleW != TGSI_SWIZZLE_W) {
 478          CHR( '.' );
 479          ENM( inst->Predicate.SwizzleX, tgsi_swizzle_names );
 480          ENM( inst->Predicate.SwizzleY, tgsi_swizzle_names );
 481          ENM( inst->Predicate.SwizzleZ, tgsi_swizzle_names );
 482          ENM( inst->Predicate.SwizzleW, tgsi_swizzle_names );
 483       }
 484
 485       TXT( ") " );
 486    }
 487
 488    TXT( info->mnemonic );
 489
 490    switch (inst->Instruction.Saturate) {
 491    case TGSI_SAT_NONE:
 492       break;
 493    case TGSI_SAT_ZERO_ONE:
 494       TXT( "_SAT" );
 495       break;
 496    case TGSI_SAT_MINUS_PLUS_ONE:
 497       TXT( "_SATNV" );
 498       break;
 499    default:
 500       assert( 0 );
 501    }
 502
 503    for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
 504       const struct tgsi_full_dst_register *dst = &inst->Dst[i];
 505
 506       if (!first_reg)
 507          CHR( ',' );
 508       CHR( ' ' );
 509
 510       _dump_register_dst( ctx, dst );
 511       _dump_writemask( ctx, dst->Register.WriteMask );
 512
 513       first_reg = FALSE;
 514    }
 515
 516    for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
 517       const struct tgsi_full_src_register *src = &inst->Src[i];
 518
 519       if (!first_reg)
 520          CHR( ',' );
 521       CHR( ' ' );
 522
 523       if (src->Register.Negate)
 524          CHR( '-' );
 525       if (src->Register.Absolute)
 526          CHR( '|' );
 527
 528       _dump_register_src(ctx, src);
 529
 530       if (src->Register.SwizzleX != TGSI_SWIZZLE_X ||
 531           src->Register.SwizzleY != TGSI_SWIZZLE_Y ||
 532           src->Register.SwizzleZ != TGSI_SWIZZLE_Z ||
 533           src->Register.SwizzleW != TGSI_SWIZZLE_W) {
 534          CHR( '.' );
 535          ENM( src->Register.SwizzleX, tgsi_swizzle_names );
 536          ENM( src->Register.SwizzleY, tgsi_swizzle_names );
 537          ENM( src->Register.SwizzleZ, tgsi_swizzle_names );
 538          ENM( src->Register.SwizzleW, tgsi_swizzle_names );
 539       }
 540
 541       if (src->Register.Absolute)
 542          CHR( '|' );
 543
 544       first_reg = FALSE;
 545    }
 546
 547    if (inst->Instruction.Texture) {
 548       TXT( ", " );
 549       ENM( inst->Texture.Texture, tgsi_texture_names );
 550       for (i = 0; i < inst->Texture.NumOffsets; i++) {
 551          TXT( ", " );
 552          ENM( inst->TexOffsets[i].File, tgsi_file_names);
 553          CHR( '[' );
 554          SID( inst->TexOffsets[i].Index );
 555          CHR( ']' );
 556          CHR( '.' );
 557          ENM( inst->TexOffsets[i].SwizzleX, tgsi_swizzle_names);
 558          ENM( inst->TexOffsets[i].SwizzleY, tgsi_swizzle_names);
 559          ENM( inst->TexOffsets[i].SwizzleZ, tgsi_swizzle_names);
 560       }
 561    }
 562
 563    switch (inst->Instruction.Opcode) {
 564    case TGSI_OPCODE_IF:
 565    case TGSI_OPCODE_ELSE:
 566    case TGSI_OPCODE_BGNLOOP:
 567    case TGSI_OPCODE_ENDLOOP:
 568    case TGSI_OPCODE_CAL:
 569       TXT( " :" );
 570       UID( inst->Label.Label );
 571       break;
 572    }
 573
 574    /* update indentation */
 575    if (inst->Instruction.Opcode == TGSI_OPCODE_IF ||
 576        inst->Instruction.Opcode == TGSI_OPCODE_ELSE ||
 577        inst->Instruction.Opcode == TGSI_OPCODE_BGNLOOP) {
 578       ctx->indentation += indent_spaces;
 579    }
 580
 581    EOL();
 582
 583    return TRUE;
 584 }
 585
 586 void
 587 tgsi_dump_instruction(
 588    const struct tgsi_full_instruction *inst,
 589    uint instno )
 590 {
 591    struct dump_ctx ctx;
 592
 593    ctx.instno = instno;
 594    ctx.immno = instno;
 595    ctx.indent = 0;
 596    ctx.dump_printf = dump_ctx_printf;
 597    ctx.indentation = 0;
 598
 599    iter_instruction( &ctx.iter, (struct tgsi_full_instruction *)inst );
 600 }
 601
 602 static boolean
 603 prolog(
 604    struct tgsi_iterate_context *iter )
 605 {
 606    struct dump_ctx *ctx = (struct dump_ctx *) iter;
 607    ENM( iter->processor.Processor, tgsi_processor_type_names );
 608    EOL();
 609    return TRUE;
 610 }
 611
 612 void
 613 tgsi_dump(
 614    const struct tgsi_token *tokens,
 615    uint flags )
 616 {
 617    struct dump_ctx ctx;
 618
 619    ctx.iter.prolog = prolog;
 620    ctx.iter.iterate_instruction = iter_instruction;
 621    ctx.iter.iterate_declaration = iter_declaration;
 622    ctx.iter.iterate_immediate = iter_immediate;
 623    ctx.iter.iterate_property = iter_property;
 624    ctx.iter.epilog = NULL;
 625
 626    ctx.instno = 0;
 627    ctx.immno = 0;
 628    ctx.indent = 0;
 629    ctx.dump_printf = dump_ctx_printf;
 630    ctx.indentation = 0;
 631
 632    tgsi_iterate_shader( tokens, &ctx.iter );
 633 }
 634
 635 struct str_dump_ctx
 636 {
 637    struct dump_ctx base;
 638    char *str;
 639    char *ptr;
 640    int left;
 641 };
 642
 643 static void
 644 str_dump_ctx_printf(struct dump_ctx *ctx, const char *format, ...)
 645 {
 646    struct str_dump_ctx *sctx = (struct str_dump_ctx *)ctx;
 647
 648    if(sctx->left > 1) {
 649       int written;
 650       va_list ap;
 651       va_start(ap, format);
 652       written = util_vsnprintf(sctx->ptr, sctx->left, format, ap);
 653       va_end(ap);
 654
 655       /* Some complicated logic needed to handle the return value of
 656        * vsnprintf:
 657        */
 658       if (written > 0) {
 659          written = MIN2(sctx->left, written);
 660          sctx->ptr += written;
 661          sctx->left -= written;
 662       }
 663    }
 664 }
 665
 666 void
 667 tgsi_dump_str(
 668    const struct tgsi_token *tokens,
 669    uint flags,
 670    char *str,
 671    size_t size)
 672 {
 673    struct str_dump_ctx ctx;
 674
 675    ctx.base.iter.prolog = prolog;
 676    ctx.base.iter.iterate_instruction = iter_instruction;
 677    ctx.base.iter.iterate_declaration = iter_declaration;
 678    ctx.base.iter.iterate_immediate = iter_immediate;
 679    ctx.base.iter.iterate_property = iter_property;
 680    ctx.base.iter.epilog = NULL;
 681
 682    ctx.base.instno = 0;
 683    ctx.base.immno = 0;
 684    ctx.base.indent = 0;
 685    ctx.base.dump_printf = &str_dump_ctx_printf;
 686    ctx.base.indentation = 0;
 687
 688    ctx.str = str;
 689    ctx.str[0] = 0;
 690    ctx.ptr = str;
 691    ctx.left = (int)size;
 692
 693    tgsi_iterate_shader( tokens, &ctx.base.iter );
 694 }