src/gallium/auxiliary/tgsi/tgsi_ureg.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 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, INC 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
  29 #include "pipe/p_context.h"
  30 #include "pipe/p_state.h"
  31 #include "tgsi/tgsi_ureg.h"
  32 #include "tgsi/tgsi_build.h"
  33 #include "tgsi/tgsi_info.h"
  34 #include "tgsi/tgsi_dump.h"
  35 #include "tgsi/tgsi_sanity.h"
  36 #include "util/u_memory.h"
  37 #include "util/u_math.h"
  38
  39 union tgsi_any_token {
  40    struct tgsi_header header;
  41    struct tgsi_processor processor;
  42    struct tgsi_token token;
  43    struct tgsi_declaration decl;
  44    struct tgsi_declaration_range decl_range;
  45    struct tgsi_declaration_semantic decl_semantic;
  46    struct tgsi_immediate imm;
  47    union  tgsi_immediate_data imm_data;
  48    struct tgsi_instruction insn;
  49    struct tgsi_instruction_predicate insn_predicate;
  50    struct tgsi_instruction_label insn_label;
  51    struct tgsi_instruction_texture insn_texture;
  52    struct tgsi_src_register src;
  53    struct tgsi_dimension dim;
  54    struct tgsi_dst_register dst;
  55    unsigned value;
  56 };
  57
  58
  59 struct ureg_tokens {
  60    union tgsi_any_token *tokens;
  61    unsigned size;
  62    unsigned order;
  63    unsigned count;
  64 };
  65
  66 #define UREG_MAX_INPUT PIPE_MAX_ATTRIBS
  67 #define UREG_MAX_OUTPUT PIPE_MAX_ATTRIBS
  68 #define UREG_MAX_CONSTANT_RANGE 32
  69 #define UREG_MAX_IMMEDIATE 32
  70 #define UREG_MAX_TEMP 256
  71 #define UREG_MAX_ADDR 2
  72 #define UREG_MAX_LOOP 1
  73 #define UREG_MAX_PRED 1
  74
  75 #define DOMAIN_DECL 0
  76 #define DOMAIN_INSN 1
  77
  78 struct ureg_program
  79 {
  80    unsigned processor;
  81    struct pipe_context *pipe;
  82
  83    struct {
  84       unsigned semantic_name;
  85       unsigned semantic_index;
  86       unsigned interp;
  87    } fs_input[UREG_MAX_INPUT];
  88    unsigned nr_fs_inputs;
  89
  90    unsigned vs_inputs[UREG_MAX_INPUT/32];
  91
  92    struct {
  93       unsigned semantic_name;
  94       unsigned semantic_index;
  95    } output[UREG_MAX_OUTPUT];
  96    unsigned nr_outputs;
  97
  98    struct {
  99       float v[4];
 100       unsigned nr;
 101    } immediate[UREG_MAX_IMMEDIATE];
 102    unsigned nr_immediates;
 103
 104    struct ureg_src sampler[PIPE_MAX_SAMPLERS];
 105    unsigned nr_samplers;
 106
 107    unsigned temps_active[UREG_MAX_TEMP / 32];
 108    unsigned nr_temps;
 109
 110    struct {
 111       unsigned first;
 112       unsigned last;
 113    } constant_range[UREG_MAX_CONSTANT_RANGE];
 114    unsigned nr_constant_ranges;
 115
 116    unsigned nr_addrs;
 117    unsigned nr_preds;
 118    unsigned nr_loops;
 119    unsigned nr_instructions;
 120
 121    struct ureg_tokens domain[2];
 122 };
 123
 124 static union tgsi_any_token error_tokens[32];
 125
 126 static void tokens_error( struct ureg_tokens *tokens )
 127 {
 128    if (tokens->tokens && tokens->tokens != error_tokens)
 129       FREE(tokens->tokens);
 130
 131    tokens->tokens = error_tokens;
 132    tokens->size = Elements(error_tokens);
 133    tokens->count = 0;
 134 }
 135
 136
 137 static void tokens_expand( struct ureg_tokens *tokens,
 138                            unsigned count )
 139 {
 140    unsigned old_size = tokens->size * sizeof(unsigned);
 141
 142    if (tokens->tokens == error_tokens) {
 143       return;
 144    }
 145
 146    while (tokens->count + count > tokens->size) {
 147       tokens->size = (1 << ++tokens->order);
 148    }
 149
 150    tokens->tokens = REALLOC(tokens->tokens,
 151                             old_size,
 152                             tokens->size * sizeof(unsigned));
 153    if (tokens->tokens == NULL) {
 154       tokens_error(tokens);
 155    }
 156 }
 157
 158 static void set_bad( struct ureg_program *ureg )
 159 {
 160    tokens_error(&ureg->domain[0]);
 161 }
 162
 163
 164
 165 static union tgsi_any_token *get_tokens( struct ureg_program *ureg,
 166                                          unsigned domain,
 167                                          unsigned count )
 168 {
 169    struct ureg_tokens *tokens = &ureg->domain[domain];
 170    union tgsi_any_token *result;
 171
 172    if (tokens->count + count > tokens->size)
 173       tokens_expand(tokens, count);
 174
 175    result = &tokens->tokens[tokens->count];
 176    tokens->count += count;
 177    return result;
 178 }
 179
 180
 181 static union tgsi_any_token *retrieve_token( struct ureg_program *ureg,
 182                                             unsigned domain,
 183                                             unsigned nr )
 184 {
 185    if (ureg->domain[domain].tokens == error_tokens)
 186       return &error_tokens[0];
 187
 188    return &ureg->domain[domain].tokens[nr];
 189 }
 190
 191
 192
 193 static INLINE struct ureg_dst
 194 ureg_dst_register( unsigned file,
 195                    unsigned index )
 196 {
 197    struct ureg_dst dst;
 198
 199    dst.File      = file;
 200    dst.WriteMask = TGSI_WRITEMASK_XYZW;
 201    dst.Indirect  = 0;
 202    dst.IndirectIndex = 0;
 203    dst.IndirectSwizzle = 0;
 204    dst.Saturate  = 0;
 205    dst.Predicate = 0;
 206    dst.PredNegate = 0;
 207    dst.PredSwizzleX = TGSI_SWIZZLE_X;
 208    dst.PredSwizzleY = TGSI_SWIZZLE_Y;
 209    dst.PredSwizzleZ = TGSI_SWIZZLE_Z;
 210    dst.PredSwizzleW = TGSI_SWIZZLE_W;
 211    dst.Index     = index;
 212
 213    return dst;
 214 }
 215
 216 static INLINE struct ureg_src
 217 ureg_src_register( unsigned file,
 218                    unsigned index )
 219 {
 220    struct ureg_src src;
 221
 222    src.File     = file;
 223    src.SwizzleX = TGSI_SWIZZLE_X;
 224    src.SwizzleY = TGSI_SWIZZLE_Y;
 225    src.SwizzleZ = TGSI_SWIZZLE_Z;
 226    src.SwizzleW = TGSI_SWIZZLE_W;
 227    src.Pad      = 0;
 228    src.Indirect = 0;
 229    src.IndirectIndex = 0;
 230    src.IndirectSwizzle = 0;
 231    src.Absolute = 0;
 232    src.Index    = index;
 233    src.Negate   = 0;
 234
 235    return src;
 236 }
 237
 238
 239
 240
 241 struct ureg_src
 242 ureg_DECL_fs_input( struct ureg_program *ureg,
 243                     unsigned name,
 244                     unsigned index,
 245                     unsigned interp_mode )
 246 {
 247    unsigned i;
 248
 249    for (i = 0; i < ureg->nr_fs_inputs; i++) {
 250       if (ureg->fs_input[i].semantic_name == name &&
 251           ureg->fs_input[i].semantic_index == index)
 252          goto out;
 253    }
 254
 255    if (ureg->nr_fs_inputs < UREG_MAX_INPUT) {
 256       ureg->fs_input[i].semantic_name = name;
 257       ureg->fs_input[i].semantic_index = index;
 258       ureg->fs_input[i].interp = interp_mode;
 259       ureg->nr_fs_inputs++;
 260    }
 261    else {
 262       set_bad( ureg );
 263    }
 264
 265 out:
 266    return ureg_src_register( TGSI_FILE_INPUT, i );
 267 }
 268
 269
 270 struct ureg_src
 271 ureg_DECL_vs_input( struct ureg_program *ureg,
 272                     unsigned index )
 273 {
 274    assert(ureg->processor == TGSI_PROCESSOR_VERTEX);
 275
 276    ureg->vs_inputs[index/32] |= 1 << (index % 32);
 277    return ureg_src_register( TGSI_FILE_INPUT, index );
 278 }
 279
 280
 281 struct ureg_dst
 282 ureg_DECL_output( struct ureg_program *ureg,
 283                   unsigned name,
 284                   unsigned index )
 285 {
 286    unsigned i;
 287
 288    for (i = 0; i < ureg->nr_outputs; i++) {
 289       if (ureg->output[i].semantic_name == name &&
 290           ureg->output[i].semantic_index == index)
 291          goto out;
 292    }
 293
 294    if (ureg->nr_outputs < UREG_MAX_OUTPUT) {
 295       ureg->output[i].semantic_name = name;
 296       ureg->output[i].semantic_index = index;
 297       ureg->nr_outputs++;
 298    }
 299    else {
 300       set_bad( ureg );
 301    }
 302
 303 out:
 304    return ureg_dst_register( TGSI_FILE_OUTPUT, i );
 305 }
 306
 307
 308 /* Returns a new constant register.  Keep track of which have been
 309  * referred to so that we can emit decls later.
 310  *
 311  * There is nothing in this code to bind this constant to any tracked
 312  * value or manage any constant_buffer contents -- that's the
 313  * resposibility of the calling code.
 314  */
 315 struct ureg_src ureg_DECL_constant(struct ureg_program *ureg,
 316                                    unsigned index )
 317 {
 318    unsigned minconst = index, maxconst = index;
 319    unsigned i;
 320
 321    /* Inside existing range?
 322     */
 323    for (i = 0; i < ureg->nr_constant_ranges; i++) {
 324       if (ureg->constant_range[i].first <= index &&
 325           ureg->constant_range[i].last >= index)
 326          goto out;
 327    }
 328
 329    /* Extend existing range?
 330     */
 331    for (i = 0; i < ureg->nr_constant_ranges; i++) {
 332       if (ureg->constant_range[i].last == index - 1) {
 333          ureg->constant_range[i].last = index;
 334          goto out;
 335       }
 336
 337       if (ureg->constant_range[i].first == index + 1) {
 338          ureg->constant_range[i].first = index;
 339          goto out;
 340       }
 341
 342       minconst = MIN2(minconst, ureg->constant_range[i].first);
 343       maxconst = MAX2(maxconst, ureg->constant_range[i].last);
 344    }
 345
 346    /* Create new range?
 347     */
 348    if (ureg->nr_constant_ranges < UREG_MAX_CONSTANT_RANGE) {
 349       i = ureg->nr_constant_ranges++;
 350       ureg->constant_range[i].first = index;
 351       ureg->constant_range[i].last = index;
 352       goto out;
 353    }
 354
 355    /* Collapse all ranges down to one:
 356     */
 357    i = 0;
 358    ureg->constant_range[0].first = minconst;
 359    ureg->constant_range[0].last = maxconst;
 360    ureg->nr_constant_ranges = 1;
 361
 362 out:
 363    assert(i < ureg->nr_constant_ranges);
 364    assert(ureg->constant_range[i].first <= index);
 365    assert(ureg->constant_range[i].last >= index);
 366    return ureg_src_register( TGSI_FILE_CONSTANT, index );
 367 }
 368
 369
 370 /* Allocate a new temporary.  Temporaries greater than UREG_MAX_TEMP
 371  * are legal, but will not be released.
 372  */
 373 struct ureg_dst ureg_DECL_temporary( struct ureg_program *ureg )
 374 {
 375    unsigned i;
 376
 377    for (i = 0; i < UREG_MAX_TEMP; i += 32) {
 378       int bit = ffs(~ureg->temps_active[i/32]);
 379       if (bit != 0) {
 380          i += bit - 1;
 381          goto out;
 382       }
 383    }
 384
 385    /* No reusable temps, so allocate a new one:
 386     */
 387    i = ureg->nr_temps++;
 388
 389 out:
 390    if (i < UREG_MAX_TEMP)
 391       ureg->temps_active[i/32] |= 1 << (i % 32);
 392
 393    if (i >= ureg->nr_temps)
 394       ureg->nr_temps = i + 1;
 395
 396    return ureg_dst_register( TGSI_FILE_TEMPORARY, i );
 397 }
 398
 399
 400 void ureg_release_temporary( struct ureg_program *ureg,
 401                              struct ureg_dst tmp )
 402 {
 403    if(tmp.File == TGSI_FILE_TEMPORARY)
 404       if (tmp.Index < UREG_MAX_TEMP)
 405          ureg->temps_active[tmp.Index/32] &= ~(1 << (tmp.Index % 32));
 406 }
 407
 408
 409 /* Allocate a new address register.
 410  */
 411 struct ureg_dst ureg_DECL_address( struct ureg_program *ureg )
 412 {
 413    if (ureg->nr_addrs < UREG_MAX_ADDR)
 414       return ureg_dst_register( TGSI_FILE_ADDRESS, ureg->nr_addrs++ );
 415
 416    assert( 0 );
 417    return ureg_dst_register( TGSI_FILE_ADDRESS, 0 );
 418 }
 419
 420 /* Allocate a new loop register.
 421  */
 422 struct ureg_dst
 423 ureg_DECL_loop(struct ureg_program *ureg)
 424 {
 425    if (ureg->nr_loops < UREG_MAX_LOOP) {
 426       return ureg_dst_register(TGSI_FILE_LOOP, ureg->nr_loops++);
 427    }
 428
 429    assert(0);
 430    return ureg_dst_register(TGSI_FILE_LOOP, 0);
 431 }
 432
 433 /* Allocate a new predicate register.
 434  */
 435 struct ureg_dst
 436 ureg_DECL_predicate(struct ureg_program *ureg)
 437 {
 438    if (ureg->nr_preds < UREG_MAX_PRED) {
 439       return ureg_dst_register(TGSI_FILE_PREDICATE, ureg->nr_preds++);
 440    }
 441
 442    assert(0);
 443    return ureg_dst_register(TGSI_FILE_PREDICATE, 0);
 444 }
 445
 446 /* Allocate a new sampler.
 447  */
 448 struct ureg_src ureg_DECL_sampler( struct ureg_program *ureg,
 449                                    unsigned nr )
 450 {
 451    unsigned i;
 452
 453    for (i = 0; i < ureg->nr_samplers; i++)
 454       if (ureg->sampler[i].Index == nr)
 455          return ureg->sampler[i];
 456
 457    if (i < PIPE_MAX_SAMPLERS) {
 458       ureg->sampler[i] = ureg_src_register( TGSI_FILE_SAMPLER, nr );
 459       ureg->nr_samplers++;
 460       return ureg->sampler[i];
 461    }
 462
 463    assert( 0 );
 464    return ureg->sampler[0];
 465 }
 466
 467
 468
 469
 470 static int match_or_expand_immediate( const float *v,
 471                                       unsigned nr,
 472                                       float *v2,
 473                                       unsigned *nr2,
 474                                       unsigned *swizzle )
 475 {
 476    unsigned i, j;
 477
 478    *swizzle = 0;
 479
 480    for (i = 0; i < nr; i++) {
 481       boolean found = FALSE;
 482
 483       for (j = 0; j < *nr2 && !found; j++) {
 484          if (v[i] == v2[j]) {
 485             *swizzle |= j << (i * 2);
 486             found = TRUE;
 487          }
 488       }
 489
 490       if (!found) {
 491          if (*nr2 >= 4)
 492             return FALSE;
 493
 494          v2[*nr2] = v[i];
 495          *swizzle |= *nr2 << (i * 2);
 496          (*nr2)++;
 497       }
 498    }
 499
 500    return TRUE;
 501 }
 502
 503
 504
 505
 506 struct ureg_src ureg_DECL_immediate( struct ureg_program *ureg,
 507                                      const float *v,
 508                                      unsigned nr )
 509 {
 510    unsigned i, j;
 511    unsigned swizzle;
 512
 513    /* Could do a first pass where we examine all existing immediates
 514     * without expanding.
 515     */
 516
 517    for (i = 0; i < ureg->nr_immediates; i++) {
 518       if (match_or_expand_immediate( v,
 519                                      nr,
 520                                      ureg->immediate[i].v,
 521                                      &ureg->immediate[i].nr,
 522                                      &swizzle ))
 523          goto out;
 524    }
 525
 526    if (ureg->nr_immediates < UREG_MAX_IMMEDIATE) {
 527       i = ureg->nr_immediates++;
 528       if (match_or_expand_immediate( v,
 529                                      nr,
 530                                      ureg->immediate[i].v,
 531                                      &ureg->immediate[i].nr,
 532                                      &swizzle ))
 533          goto out;
 534    }
 535
 536    set_bad( ureg );
 537
 538 out:
 539    /* Make sure that all referenced elements are from this immediate.
 540     * Has the effect of making size-one immediates into scalars.
 541     */
 542    for (j = nr; j < 4; j++)
 543       swizzle |= (swizzle & 0x3) << (j * 2);
 544
 545    return ureg_swizzle( ureg_src_register( TGSI_FILE_IMMEDIATE, i ),
 546                         (swizzle >> 0) & 0x3,
 547                         (swizzle >> 2) & 0x3,
 548                         (swizzle >> 4) & 0x3,
 549                         (swizzle >> 6) & 0x3);
 550 }
 551
 552
 553 void
 554 ureg_emit_src( struct ureg_program *ureg,
 555                struct ureg_src src )
 556 {
 557    unsigned size = 1 + (src.Indirect ? 1 : 0);
 558
 559    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_INSN, size );
 560    unsigned n = 0;
 561
 562    assert(src.File != TGSI_FILE_NULL);
 563    assert(src.File != TGSI_FILE_OUTPUT);
 564    assert(src.File < TGSI_FILE_COUNT);
 565
 566    out[n].value = 0;
 567    out[n].src.File = src.File;
 568    out[n].src.SwizzleX = src.SwizzleX;
 569    out[n].src.SwizzleY = src.SwizzleY;
 570    out[n].src.SwizzleZ = src.SwizzleZ;
 571    out[n].src.SwizzleW = src.SwizzleW;
 572    out[n].src.Index = src.Index;
 573    out[n].src.Negate = src.Negate;
 574    out[0].src.Absolute = src.Absolute;
 575    n++;
 576
 577    if (src.Indirect) {
 578       out[0].src.Indirect = 1;
 579       out[n].value = 0;
 580       out[n].src.File = TGSI_FILE_ADDRESS;
 581       out[n].src.SwizzleX = src.IndirectSwizzle;
 582       out[n].src.SwizzleY = src.IndirectSwizzle;
 583       out[n].src.SwizzleZ = src.IndirectSwizzle;
 584       out[n].src.SwizzleW = src.IndirectSwizzle;
 585       out[n].src.Index = src.IndirectIndex;
 586       n++;
 587    }
 588
 589    assert(n == size);
 590 }
 591
 592
 593 void
 594 ureg_emit_dst( struct ureg_program *ureg,
 595                struct ureg_dst dst )
 596 {
 597    unsigned size = (1 +
 598                     (dst.Indirect ? 1 : 0));
 599
 600    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_INSN, size );
 601    unsigned n = 0;
 602
 603    assert(dst.File != TGSI_FILE_NULL);
 604    assert(dst.File != TGSI_FILE_CONSTANT);
 605    assert(dst.File != TGSI_FILE_INPUT);
 606    assert(dst.File != TGSI_FILE_SAMPLER);
 607    assert(dst.File != TGSI_FILE_IMMEDIATE);
 608    assert(dst.File < TGSI_FILE_COUNT);
 609
 610    out[n].value = 0;
 611    out[n].dst.File = dst.File;
 612    out[n].dst.WriteMask = dst.WriteMask;
 613    out[n].dst.Indirect = dst.Indirect;
 614    out[n].dst.Index = dst.Index;
 615    n++;
 616
 617    if (dst.Indirect) {
 618       out[n].value = 0;
 619       out[n].src.File = TGSI_FILE_ADDRESS;
 620       out[n].src.SwizzleX = dst.IndirectSwizzle;
 621       out[n].src.SwizzleY = dst.IndirectSwizzle;
 622       out[n].src.SwizzleZ = dst.IndirectSwizzle;
 623       out[n].src.SwizzleW = dst.IndirectSwizzle;
 624       out[n].src.Index = dst.IndirectIndex;
 625       n++;
 626    }
 627
 628    assert(n == size);
 629 }
 630
 631
 632 static void validate( unsigned opcode,
 633                       unsigned nr_dst,
 634                       unsigned nr_src )
 635 {
 636 #ifdef DEBUG
 637    const struct tgsi_opcode_info *info = tgsi_get_opcode_info( opcode );
 638    assert(info);
 639    if(info) {
 640       assert(nr_dst == info->num_dst);
 641       assert(nr_src == info->num_src);
 642    }
 643 #endif
 644 }
 645
 646 struct ureg_emit_insn_result
 647 ureg_emit_insn(struct ureg_program *ureg,
 648                unsigned opcode,
 649                boolean saturate,
 650                boolean predicate,
 651                boolean pred_negate,
 652                unsigned pred_swizzle_x,
 653                unsigned pred_swizzle_y,
 654                unsigned pred_swizzle_z,
 655                unsigned pred_swizzle_w,
 656                unsigned num_dst,
 657                unsigned num_src )
 658 {
 659    union tgsi_any_token *out;
 660    uint count = predicate ? 2 : 1;
 661    struct ureg_emit_insn_result result;
 662
 663    validate( opcode, num_dst, num_src );
 664
 665    out = get_tokens( ureg, DOMAIN_INSN, count );
 666    out[0].insn = tgsi_default_instruction();
 667    out[0].insn.Opcode = opcode;
 668    out[0].insn.Saturate = saturate;
 669    out[0].insn.NumDstRegs = num_dst;
 670    out[0].insn.NumSrcRegs = num_src;
 671
 672    result.insn_token = ureg->domain[DOMAIN_INSN].count - count;
 673    result.extended_token = result.insn_token;
 674
 675    if (predicate) {
 676       out[0].insn.Predicate = 1;
 677       out[1].insn_predicate = tgsi_default_instruction_predicate();
 678       out[1].insn_predicate.Negate = pred_negate;
 679       out[1].insn_predicate.SwizzleX = pred_swizzle_x;
 680       out[1].insn_predicate.SwizzleY = pred_swizzle_y;
 681       out[1].insn_predicate.SwizzleZ = pred_swizzle_z;
 682       out[1].insn_predicate.SwizzleW = pred_swizzle_w;
 683    }
 684
 685    ureg->nr_instructions++;
 686
 687    return result;
 688 }
 689
 690
 691 void
 692 ureg_emit_label(struct ureg_program *ureg,
 693                 unsigned extended_token,
 694                 unsigned *label_token )
 695 {
 696    union tgsi_any_token *out, *insn;
 697
 698    if(!label_token)
 699       return;
 700
 701    out = get_tokens( ureg, DOMAIN_INSN, 1 );
 702    out[0].value = 0;
 703
 704    insn = retrieve_token( ureg, DOMAIN_INSN, extended_token );
 705    insn->insn.Label = 1;
 706
 707    *label_token = ureg->domain[DOMAIN_INSN].count - 1;
 708 }
 709
 710 /* Will return a number which can be used in a label to point to the
 711  * next instruction to be emitted.
 712  */
 713 unsigned
 714 ureg_get_instruction_number( struct ureg_program *ureg )
 715 {
 716    return ureg->nr_instructions;
 717 }
 718
 719 /* Patch a given label (expressed as a token number) to point to a
 720  * given instruction (expressed as an instruction number).
 721  */
 722 void
 723 ureg_fixup_label(struct ureg_program *ureg,
 724                  unsigned label_token,
 725                  unsigned instruction_number )
 726 {
 727    union tgsi_any_token *out = retrieve_token( ureg, DOMAIN_INSN, label_token );
 728
 729    out->insn_label.Label = instruction_number;
 730 }
 731
 732
 733 void
 734 ureg_emit_texture(struct ureg_program *ureg,
 735                   unsigned extended_token,
 736                   unsigned target )
 737 {
 738    union tgsi_any_token *out, *insn;
 739
 740    out = get_tokens( ureg, DOMAIN_INSN, 1 );
 741    insn = retrieve_token( ureg, DOMAIN_INSN, extended_token );
 742
 743    insn->insn.Texture = 1;
 744
 745    out[0].value = 0;
 746    out[0].insn_texture.Texture = target;
 747 }
 748
 749
 750 void
 751 ureg_fixup_insn_size(struct ureg_program *ureg,
 752                      unsigned insn )
 753 {
 754    union tgsi_any_token *out = retrieve_token( ureg, DOMAIN_INSN, insn );
 755
 756    assert(out->insn.Type == TGSI_TOKEN_TYPE_INSTRUCTION);
 757    out->insn.NrTokens = ureg->domain[DOMAIN_INSN].count - insn - 1;
 758 }
 759
 760
 761 void
 762 ureg_insn(struct ureg_program *ureg,
 763           unsigned opcode,
 764           const struct ureg_dst *dst,
 765           unsigned nr_dst,
 766           const struct ureg_src *src,
 767           unsigned nr_src )
 768 {
 769    struct ureg_emit_insn_result insn;
 770    unsigned i;
 771    boolean saturate;
 772    boolean predicate;
 773    boolean negate;
 774    unsigned swizzle[4];
 775
 776    saturate = nr_dst ? dst[0].Saturate : FALSE;
 777    predicate = nr_dst ? dst[0].Predicate : FALSE;
 778    if (predicate) {
 779       negate = dst[0].PredNegate;
 780       swizzle[0] = dst[0].PredSwizzleX;
 781       swizzle[1] = dst[0].PredSwizzleY;
 782       swizzle[2] = dst[0].PredSwizzleZ;
 783       swizzle[3] = dst[0].PredSwizzleW;
 784    }
 785
 786    insn = ureg_emit_insn(ureg,
 787                          opcode,
 788                          saturate,
 789                          predicate,
 790                          negate,
 791                          swizzle[0],
 792                          swizzle[1],
 793                          swizzle[2],
 794                          swizzle[3],
 795                          nr_dst,
 796                          nr_src);
 797
 798    for (i = 0; i < nr_dst; i++)
 799       ureg_emit_dst( ureg, dst[i] );
 800
 801    for (i = 0; i < nr_src; i++)
 802       ureg_emit_src( ureg, src[i] );
 803
 804    ureg_fixup_insn_size( ureg, insn.insn_token );
 805 }
 806
 807 void
 808 ureg_tex_insn(struct ureg_program *ureg,
 809               unsigned opcode,
 810               const struct ureg_dst *dst,
 811               unsigned nr_dst,
 812               unsigned target,
 813               const struct ureg_src *src,
 814               unsigned nr_src )
 815 {
 816    struct ureg_emit_insn_result insn;
 817    unsigned i;
 818    boolean saturate;
 819    boolean predicate;
 820    boolean negate;
 821    unsigned swizzle[4];
 822
 823    saturate = nr_dst ? dst[0].Saturate : FALSE;
 824    predicate = nr_dst ? dst[0].Predicate : FALSE;
 825    if (predicate) {
 826       negate = dst[0].PredNegate;
 827       swizzle[0] = dst[0].PredSwizzleX;
 828       swizzle[1] = dst[0].PredSwizzleY;
 829       swizzle[2] = dst[0].PredSwizzleZ;
 830       swizzle[3] = dst[0].PredSwizzleW;
 831    }
 832
 833    insn = ureg_emit_insn(ureg,
 834                          opcode,
 835                          saturate,
 836                          predicate,
 837                          negate,
 838                          swizzle[0],
 839                          swizzle[1],
 840                          swizzle[2],
 841                          swizzle[3],
 842                          nr_dst,
 843                          nr_src);
 844
 845    ureg_emit_texture( ureg, insn.extended_token, target );
 846
 847    for (i = 0; i < nr_dst; i++)
 848       ureg_emit_dst( ureg, dst[i] );
 849
 850    for (i = 0; i < nr_src; i++)
 851       ureg_emit_src( ureg, src[i] );
 852
 853    ureg_fixup_insn_size( ureg, insn.insn_token );
 854 }
 855
 856
 857 void
 858 ureg_label_insn(struct ureg_program *ureg,
 859                 unsigned opcode,
 860                 const struct ureg_src *src,
 861                 unsigned nr_src,
 862                 unsigned *label_token )
 863 {
 864    struct ureg_emit_insn_result insn;
 865    unsigned i;
 866
 867    insn = ureg_emit_insn(ureg,
 868                          opcode,
 869                          FALSE,
 870                          FALSE,
 871                          FALSE,
 872                          TGSI_SWIZZLE_X,
 873                          TGSI_SWIZZLE_Y,
 874                          TGSI_SWIZZLE_Z,
 875                          TGSI_SWIZZLE_W,
 876                          0,
 877                          nr_src);
 878
 879    ureg_emit_label( ureg, insn.extended_token, label_token );
 880
 881    for (i = 0; i < nr_src; i++)
 882       ureg_emit_src( ureg, src[i] );
 883
 884    ureg_fixup_insn_size( ureg, insn.insn_token );
 885 }
 886
 887
 888
 889 static void emit_decl( struct ureg_program *ureg,
 890                        unsigned file,
 891                        unsigned index,
 892                        unsigned semantic_name,
 893                        unsigned semantic_index,
 894                        unsigned interp )
 895 {
 896    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_DECL, 3 );
 897
 898    out[0].value = 0;
 899    out[0].decl.Type = TGSI_TOKEN_TYPE_DECLARATION;
 900    out[0].decl.NrTokens = 3;
 901    out[0].decl.File = file;
 902    out[0].decl.UsageMask = TGSI_WRITEMASK_XYZW; /* FIXME! */
 903    out[0].decl.Interpolate = interp;
 904    out[0].decl.Semantic = 1;
 905
 906    out[1].value = 0;
 907    out[1].decl_range.First =
 908       out[1].decl_range.Last = index;
 909
 910    out[2].value = 0;
 911    out[2].decl_semantic.Name = semantic_name;
 912    out[2].decl_semantic.Index = semantic_index;
 913
 914 }
 915
 916
 917 static void emit_decl_range( struct ureg_program *ureg,
 918                              unsigned file,
 919                              unsigned first,
 920                              unsigned count )
 921 {
 922    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_DECL, 2 );
 923
 924    out[0].value = 0;
 925    out[0].decl.Type = TGSI_TOKEN_TYPE_DECLARATION;
 926    out[0].decl.NrTokens = 2;
 927    out[0].decl.File = file;
 928    out[0].decl.UsageMask = 0xf;
 929    out[0].decl.Interpolate = TGSI_INTERPOLATE_CONSTANT;
 930    out[0].decl.Semantic = 0;
 931
 932    out[1].value = 0;
 933    out[1].decl_range.First = first;
 934    out[1].decl_range.Last = first + count - 1;
 935 }
 936
 937 static void emit_immediate( struct ureg_program *ureg,
 938                             const float *v )
 939 {
 940    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_DECL, 5 );
 941
 942    out[0].value = 0;
 943    out[0].imm.Type = TGSI_TOKEN_TYPE_IMMEDIATE;
 944    out[0].imm.NrTokens = 5;
 945    out[0].imm.DataType = TGSI_IMM_FLOAT32;
 946    out[0].imm.Padding = 0;
 947
 948    out[1].imm_data.Float = v[0];
 949    out[2].imm_data.Float = v[1];
 950    out[3].imm_data.Float = v[2];
 951    out[4].imm_data.Float = v[3];
 952 }
 953
 954
 955
 956
 957 static void emit_decls( struct ureg_program *ureg )
 958 {
 959    unsigned i;
 960
 961    if (ureg->processor == TGSI_PROCESSOR_VERTEX) {
 962       for (i = 0; i < UREG_MAX_INPUT; i++) {
 963          if (ureg->vs_inputs[i/32] & (1 << (i%32))) {
 964             emit_decl_range( ureg, TGSI_FILE_INPUT, i, 1 );
 965          }
 966       }
 967    }
 968    else {
 969       for (i = 0; i < ureg->nr_fs_inputs; i++) {
 970          emit_decl( ureg,
 971                     TGSI_FILE_INPUT,
 972                     i,
 973                     ureg->fs_input[i].semantic_name,
 974                     ureg->fs_input[i].semantic_index,
 975                     ureg->fs_input[i].interp );
 976       }
 977    }
 978
 979    for (i = 0; i < ureg->nr_outputs; i++) {
 980       emit_decl( ureg,
 981                  TGSI_FILE_OUTPUT,
 982                  i,
 983                  ureg->output[i].semantic_name,
 984                  ureg->output[i].semantic_index,
 985                  TGSI_INTERPOLATE_CONSTANT );
 986    }
 987
 988    for (i = 0; i < ureg->nr_samplers; i++) {
 989       emit_decl_range( ureg,
 990                        TGSI_FILE_SAMPLER,
 991                        ureg->sampler[i].Index, 1 );
 992    }
 993
 994    if (ureg->nr_constant_ranges) {
 995       for (i = 0; i < ureg->nr_constant_ranges; i++)
 996          emit_decl_range( ureg,
 997                           TGSI_FILE_CONSTANT,
 998                           ureg->constant_range[i].first,
 999                           (ureg->constant_range[i].last + 1 -
1000                            ureg->constant_range[i].first) );
1001    }
1002
1003    if (ureg->nr_temps) {
1004       emit_decl_range( ureg,
1005                        TGSI_FILE_TEMPORARY,
1006                        0, ureg->nr_temps );
1007    }
1008
1009    if (ureg->nr_addrs) {
1010       emit_decl_range( ureg,
1011                        TGSI_FILE_ADDRESS,
1012                        0, ureg->nr_addrs );
1013    }
1014
1015    if (ureg->nr_loops) {
1016       emit_decl_range(ureg,
1017                       TGSI_FILE_LOOP,
1018                       0,
1019                       ureg->nr_loops);
1020    }
1021
1022    if (ureg->nr_preds) {
1023       emit_decl_range(ureg,
1024                       TGSI_FILE_PREDICATE,
1025                       0,
1026                       ureg->nr_preds);
1027    }
1028
1029    for (i = 0; i < ureg->nr_immediates; i++) {
1030       emit_immediate( ureg,
1031                       ureg->immediate[i].v );
1032    }
1033 }
1034
1035 /* Append the instruction tokens onto the declarations to build a
1036  * contiguous stream suitable to send to the driver.
1037  */
1038 static void copy_instructions( struct ureg_program *ureg )
1039 {
1040    unsigned nr_tokens = ureg->domain[DOMAIN_INSN].count;
1041    union tgsi_any_token *out = get_tokens( ureg,
1042                                            DOMAIN_DECL,
1043                                            nr_tokens );
1044
1045    memcpy(out,
1046           ureg->domain[DOMAIN_INSN].tokens,
1047           nr_tokens * sizeof out[0] );
1048 }
1049
1050
1051 static void
1052 fixup_header_size(struct ureg_program *ureg)
1053 {
1054    union tgsi_any_token *out = retrieve_token( ureg, DOMAIN_DECL, 0 );
1055
1056    out->header.BodySize = ureg->domain[DOMAIN_DECL].count - 3;
1057 }
1058
1059
1060 static void
1061 emit_header( struct ureg_program *ureg )
1062 {
1063    union tgsi_any_token *out = get_tokens( ureg, DOMAIN_DECL, 2 );
1064
1065    out[0].header.HeaderSize = 2;
1066    out[0].header.BodySize = 0;
1067
1068    out[1].processor.Processor = ureg->processor;
1069    out[1].processor.Padding = 0;
1070 }
1071
1072
1073 const struct tgsi_token *ureg_finalize( struct ureg_program *ureg )
1074 {
1075    const struct tgsi_token *tokens;
1076
1077    emit_header( ureg );
1078    emit_decls( ureg );
1079    copy_instructions( ureg );
1080    fixup_header_size( ureg );
1081
1082    if (ureg->domain[0].tokens == error_tokens ||
1083        ureg->domain[1].tokens == error_tokens) {
1084       debug_printf("%s: error in generated shader\n", __FUNCTION__);
1085       assert(0);
1086       return NULL;
1087    }
1088
1089    tokens = &ureg->domain[DOMAIN_DECL].tokens[0].token;
1090
1091    if (0) {
1092       debug_printf("%s: emitted shader %d tokens:\n", __FUNCTION__,
1093                    ureg->domain[DOMAIN_DECL].count);
1094       tgsi_dump( tokens, 0 );
1095    }
1096
1097 #if DEBUG
1098    if (tokens && !tgsi_sanity_check(tokens)) {
1099       debug_printf("tgsi_ureg.c, sanity check failed on generated tokens:\n");
1100       tgsi_dump(tokens, 0);
1101       assert(0);
1102    }
1103 #endif
1104
1105
1106    return tokens;
1107 }
1108
1109
1110 void *ureg_create_shader( struct ureg_program *ureg,
1111                           struct pipe_context *pipe )
1112 {
1113    struct pipe_shader_state state;
1114
1115    state.tokens = ureg_finalize(ureg);
1116    if(!state.tokens)
1117       return NULL;
1118
1119    if (ureg->processor == TGSI_PROCESSOR_VERTEX)
1120       return pipe->create_vs_state( pipe, &state );
1121    else
1122       return pipe->create_fs_state( pipe, &state );
1123 }
1124
1125
1126 const struct tgsi_token *ureg_get_tokens( struct ureg_program *ureg,
1127                                           unsigned *nr_tokens )
1128 {
1129    const struct tgsi_token *tokens;
1130
1131    ureg_finalize(ureg);
1132
1133    tokens = &ureg->domain[DOMAIN_DECL].tokens[0].token;
1134
1135    if (nr_tokens)
1136       *nr_tokens = ureg->domain[DOMAIN_DECL].size;
1137
1138    ureg->domain[DOMAIN_DECL].tokens = 0;
1139    ureg->domain[DOMAIN_DECL].size = 0;
1140    ureg->domain[DOMAIN_DECL].order = 0;
1141    ureg->domain[DOMAIN_DECL].count = 0;
1142
1143    return tokens;
1144 }
1145
1146
1147 struct ureg_program *ureg_create( unsigned processor )
1148 {
1149    struct ureg_program *ureg = CALLOC_STRUCT( ureg_program );
1150    if (ureg == NULL)
1151       return NULL;
1152
1153    ureg->processor = processor;
1154    return ureg;
1155 }
1156
1157
1158 void ureg_destroy( struct ureg_program *ureg )
1159 {
1160    unsigned i;
1161
1162    for (i = 0; i < Elements(ureg->domain); i++) {
1163       if (ureg->domain[i].tokens &&
1164           ureg->domain[i].tokens != error_tokens)
1165          FREE(ureg->domain[i].tokens);
1166    }
1167
1168    FREE(ureg);
1169 }