src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * @file
  31  * TGSI to LLVM IR translation -- SoA.
  32  *
  33  * @author Jose Fonseca <jfonseca@vmware.com>
  34  *
  35  * Based on tgsi_sse2.c code written by Michal Krol, Keith Whitwell,
  36  * Brian Paul, and others.
  37  */
  38
  39 #include "pipe/p_config.h"
  40 #include "pipe/p_shader_tokens.h"
  41 #include "util/u_debug.h"
  42 #include "util/u_math.h"
  43 #include "util/u_memory.h"
  44 #include "tgsi/tgsi_dump.h"
  45 #include "tgsi/tgsi_info.h"
  46 #include "tgsi/tgsi_parse.h"
  47 #include "tgsi/tgsi_util.h"
  48 #include "tgsi/tgsi_exec.h"
  49 #include "tgsi/tgsi_scan.h"
  50 #include "lp_bld_type.h"
  51 #include "lp_bld_const.h"
  52 #include "lp_bld_arit.h"
  53 #include "lp_bld_logic.h"
  54 #include "lp_bld_swizzle.h"
  55 #include "lp_bld_flow.h"
  56 #include "lp_bld_tgsi.h"
  57 #include "lp_bld_limits.h"
  58 #include "lp_bld_debug.h"
  59
  60
  61 #define FOR_EACH_CHANNEL( CHAN )\
  62    for (CHAN = 0; CHAN < NUM_CHANNELS; CHAN++)
  63
  64 #define IS_DST0_CHANNEL_ENABLED( INST, CHAN )\
  65    ((INST)->Dst[0].Register.WriteMask & (1 << (CHAN)))
  66
  67 #define IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN )\
  68    if (IS_DST0_CHANNEL_ENABLED( INST, CHAN ))
  69
  70 #define FOR_EACH_DST0_ENABLED_CHANNEL( INST, CHAN )\
  71    FOR_EACH_CHANNEL( CHAN )\
  72       IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN )
  73
  74 #define CHAN_X 0
  75 #define CHAN_Y 1
  76 #define CHAN_Z 2
  77 #define CHAN_W 3
  78
  79 #define QUAD_TOP_LEFT     0
  80 #define QUAD_TOP_RIGHT    1
  81 #define QUAD_BOTTOM_LEFT  2
  82 #define QUAD_BOTTOM_RIGHT 3
  83
  84
  85 struct lp_exec_mask {
  86    struct lp_build_context *bld;
  87
  88    boolean has_mask;
  89
  90    LLVMTypeRef int_vec_type;
  91
  92    LLVMValueRef cond_stack[LP_MAX_TGSI_NESTING];
  93    int cond_stack_size;
  94    LLVMValueRef cond_mask;
  95
  96    LLVMValueRef break_stack[LP_MAX_TGSI_NESTING];
  97    int break_stack_size;
  98    LLVMValueRef break_mask;
  99
 100    LLVMValueRef cont_stack[LP_MAX_TGSI_NESTING];
 101    int cont_stack_size;
 102    LLVMValueRef cont_mask;
 103
 104    LLVMBasicBlockRef loop_stack[LP_MAX_TGSI_NESTING];
 105    int loop_stack_size;
 106    LLVMBasicBlockRef loop_block;
 107
 108
 109    LLVMValueRef exec_mask;
 110 };
 111
 112 struct lp_build_tgsi_soa_context
 113 {
 114    struct lp_build_context base;
 115
 116    LLVMValueRef consts_ptr;
 117    const LLVMValueRef *pos;
 118    const LLVMValueRef (*inputs)[NUM_CHANNELS];
 119    LLVMValueRef (*outputs)[NUM_CHANNELS];
 120
 121    struct lp_build_sampler_soa *sampler;
 122
 123    LLVMValueRef immediates[LP_MAX_TGSI_IMMEDIATES][NUM_CHANNELS];
 124    LLVMValueRef temps[LP_MAX_TGSI_TEMPS][NUM_CHANNELS];
 125    LLVMValueRef addr[LP_MAX_TGSI_ADDRS][NUM_CHANNELS];
 126
 127    /* we allocate an array of temps if we have indirect
 128     * addressing and then the temps above is unused */
 129    LLVMValueRef temps_array;
 130    boolean has_indirect_addressing;
 131
 132    struct lp_build_mask_context *mask;
 133    struct lp_exec_mask exec_mask;
 134 };
 135
 136 static const unsigned char
 137 swizzle_left[4] = {
 138    QUAD_TOP_LEFT,     QUAD_TOP_LEFT,
 139    QUAD_BOTTOM_LEFT,  QUAD_BOTTOM_LEFT
 140 };
 141
 142 static const unsigned char
 143 swizzle_right[4] = {
 144    QUAD_TOP_RIGHT,    QUAD_TOP_RIGHT,
 145    QUAD_BOTTOM_RIGHT, QUAD_BOTTOM_RIGHT
 146 };
 147
 148 static const unsigned char
 149 swizzle_top[4] = {
 150    QUAD_TOP_LEFT,     QUAD_TOP_RIGHT,
 151    QUAD_TOP_LEFT,     QUAD_TOP_RIGHT
 152 };
 153
 154 static const unsigned char
 155 swizzle_bottom[4] = {
 156    QUAD_BOTTOM_LEFT,  QUAD_BOTTOM_RIGHT,
 157    QUAD_BOTTOM_LEFT,  QUAD_BOTTOM_RIGHT
 158 };
 159
 160 static void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context *bld)
 161 {
 162    mask->bld = bld;
 163    mask->has_mask = FALSE;
 164    mask->cond_stack_size = 0;
 165    mask->loop_stack_size = 0;
 166    mask->break_stack_size = 0;
 167    mask->cont_stack_size = 0;
 168
 169    mask->int_vec_type = lp_build_int_vec_type(mask->bld->type);
 170 }
 171
 172 static void lp_exec_mask_update(struct lp_exec_mask *mask)
 173 {
 174    if (mask->loop_stack_size) {
 175       /*for loops we need to update the entire mask at runtime */
 176       LLVMValueRef tmp;
 177       assert(mask->break_mask);
 178       tmp = LLVMBuildAnd(mask->bld->builder,
 179                          mask->cont_mask,
 180                          mask->break_mask,
 181                          "maskcb");
 182       mask->exec_mask = LLVMBuildAnd(mask->bld->builder,
 183                                      mask->cond_mask,
 184                                      tmp,
 185                                      "maskfull");
 186    } else
 187       mask->exec_mask = mask->cond_mask;
 188
 189
 190    mask->has_mask = (mask->cond_stack_size > 0 ||
 191                      mask->loop_stack_size > 0);
 192 }
 193
 194 static void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
 195                                    LLVMValueRef val)
 196 {
 197    assert(mask->cond_stack_size < LP_MAX_TGSI_NESTING);
 198    mask->cond_stack[mask->cond_stack_size++] = mask->cond_mask;
 199    mask->cond_mask = LLVMBuildBitCast(mask->bld->builder, val,
 200                                       mask->int_vec_type, "");
 201
 202    lp_exec_mask_update(mask);
 203 }
 204
 205 static void lp_exec_mask_cond_invert(struct lp_exec_mask *mask)
 206 {
 207    LLVMValueRef prev_mask = mask->cond_stack[mask->cond_stack_size - 1];
 208    LLVMValueRef inv_mask = LLVMBuildNot(mask->bld->builder,
 209                                         mask->cond_mask, "");
 210
 211    /* means that we didn't have any mask before and that
 212     * we were fully enabled */
 213    if (mask->cond_stack_size <= 1) {
 214       prev_mask = LLVMConstAllOnes(mask->int_vec_type);
 215    }
 216
 217    mask->cond_mask = LLVMBuildAnd(mask->bld->builder,
 218                                   inv_mask,
 219                                   prev_mask, "");
 220    lp_exec_mask_update(mask);
 221 }
 222
 223 static void lp_exec_mask_cond_pop(struct lp_exec_mask *mask)
 224 {
 225    mask->cond_mask = mask->cond_stack[--mask->cond_stack_size];
 226    lp_exec_mask_update(mask);
 227 }
 228
 229 static void lp_exec_bgnloop(struct lp_exec_mask *mask)
 230 {
 231
 232    if (mask->cont_stack_size == 0)
 233       mask->cont_mask = LLVMConstAllOnes(mask->int_vec_type);
 234    if (mask->break_stack_size == 0)
 235       mask->break_mask = LLVMConstAllOnes(mask->int_vec_type);
 236    if (mask->cond_stack_size == 0)
 237       mask->cond_mask = LLVMConstAllOnes(mask->int_vec_type);
 238
 239    assert(mask->break_stack_size < LP_MAX_TGSI_NESTING);
 240    assert(mask->cont_stack_size < LP_MAX_TGSI_NESTING);
 241    assert(mask->break_stack_size < LP_MAX_TGSI_NESTING);
 242
 243    mask->break_stack[mask->break_stack_size++] = mask->break_mask;
 244    mask->cont_stack[mask->cont_stack_size++] = mask->cont_mask;
 245    mask->loop_stack[mask->loop_stack_size++] = mask->loop_block;
 246    mask->loop_block = lp_build_insert_new_block(mask->bld->builder, "bgnloop");
 247    LLVMBuildBr(mask->bld->builder, mask->loop_block);
 248    LLVMPositionBuilderAtEnd(mask->bld->builder, mask->loop_block);
 249
 250    lp_exec_mask_update(mask);
 251 }
 252
 253 static void lp_exec_break(struct lp_exec_mask *mask)
 254 {
 255    LLVMValueRef exec_mask = LLVMBuildNot(mask->bld->builder,
 256                                          mask->exec_mask,
 257                                          "break");
 258
 259    mask->break_mask = LLVMBuildAnd(mask->bld->builder,
 260                                    mask->break_mask,
 261                                    exec_mask, "break_full");
 262
 263    lp_exec_mask_update(mask);
 264 }
 265
 266 static void lp_exec_continue(struct lp_exec_mask *mask)
 267 {
 268    LLVMValueRef exec_mask = LLVMBuildNot(mask->bld->builder,
 269                                          mask->exec_mask,
 270                                          "");
 271
 272    mask->cont_mask = LLVMBuildAnd(mask->bld->builder,
 273                                   mask->cont_mask,
 274                                   exec_mask, "");
 275
 276    lp_exec_mask_update(mask);
 277 }
 278
 279
 280 static void lp_exec_endloop(struct lp_exec_mask *mask)
 281 {
 282    LLVMBasicBlockRef endloop;
 283    LLVMTypeRef reg_type = LLVMIntType(mask->bld->type.width*
 284                                       mask->bld->type.length);
 285    LLVMValueRef i1cond;
 286
 287    assert(mask->break_mask);
 288
 289    /* i1cond = (mask == 0) */
 290    i1cond = LLVMBuildICmp(
 291       mask->bld->builder,
 292       LLVMIntNE,
 293       LLVMBuildBitCast(mask->bld->builder, mask->break_mask, reg_type, ""),
 294       LLVMConstNull(reg_type), "");
 295
 296    endloop = lp_build_insert_new_block(mask->bld->builder, "endloop");
 297
 298    LLVMBuildCondBr(mask->bld->builder,
 299                    i1cond, mask->loop_block, endloop);
 300
 301    LLVMPositionBuilderAtEnd(mask->bld->builder, endloop);
 302
 303    mask->loop_block = mask->loop_stack[--mask->loop_stack_size];
 304    /* pop the cont mask */
 305    if (mask->cont_stack_size) {
 306       mask->cont_mask = mask->cont_stack[--mask->cont_stack_size];
 307    }
 308    /* pop the break mask */
 309    if (mask->break_stack_size) {
 310       mask->break_mask = mask->break_stack[--mask->break_stack_size];
 311    }
 312
 313    lp_exec_mask_update(mask);
 314 }
 315
 316 /* stores val into an address pointed to by dst.
 317  * mask->exec_mask is used to figure out which bits of val
 318  * should be stored into the address
 319  * (0 means don't store this bit, 1 means do store).
 320  */
 321 static void lp_exec_mask_store(struct lp_exec_mask *mask,
 322                                LLVMValueRef val,
 323                                LLVMValueRef dst)
 324 {
 325    if (mask->has_mask) {
 326       LLVMValueRef real_val, dst_val;
 327
 328       dst_val = LLVMBuildLoad(mask->bld->builder, dst, "");
 329       real_val = lp_build_select(mask->bld,
 330                                  mask->exec_mask,
 331                                  val, dst_val);
 332
 333       LLVMBuildStore(mask->bld->builder, real_val, dst);
 334    } else
 335       LLVMBuildStore(mask->bld->builder, val, dst);
 336 }
 337
 338
 339 static LLVMValueRef
 340 emit_ddx(struct lp_build_tgsi_soa_context *bld,
 341          LLVMValueRef src)
 342 {
 343    LLVMValueRef src_left  = lp_build_swizzle1_aos(&bld->base, src, swizzle_left);
 344    LLVMValueRef src_right = lp_build_swizzle1_aos(&bld->base, src, swizzle_right);
 345    return lp_build_sub(&bld->base, src_right, src_left);
 346 }
 347
 348
 349 static LLVMValueRef
 350 emit_ddy(struct lp_build_tgsi_soa_context *bld,
 351          LLVMValueRef src)
 352 {
 353    LLVMValueRef src_top    = lp_build_swizzle1_aos(&bld->base, src, swizzle_top);
 354    LLVMValueRef src_bottom = lp_build_swizzle1_aos(&bld->base, src, swizzle_bottom);
 355    return lp_build_sub(&bld->base, src_top, src_bottom);
 356 }
 357
 358 static LLVMValueRef
 359 get_temp_ptr(struct lp_build_tgsi_soa_context *bld,
 360              unsigned index,
 361              unsigned swizzle,
 362              boolean is_indirect,
 363              LLVMValueRef addr)
 364 {
 365    if (!bld->has_indirect_addressing) {
 366       return bld->temps[index][swizzle];
 367    } else {
 368       LLVMValueRef lindex =
 369          LLVMConstInt(LLVMInt32Type(), index*4 + swizzle, 0);
 370       if (is_indirect)
 371          lindex = lp_build_add(&bld->base, lindex, addr);
 372       return LLVMBuildGEP(bld->base.builder, bld->temps_array, &lindex, 1, "");
 373    }
 374 }
 375
 376 /**
 377  * Register fetch.
 378  */
 379 static LLVMValueRef
 380 emit_fetch(
 381    struct lp_build_tgsi_soa_context *bld,
 382    const struct tgsi_full_instruction *inst,
 383    unsigned index,
 384    const unsigned chan_index )
 385 {
 386    const struct tgsi_full_src_register *reg = &inst->Src[index];
 387    unsigned swizzle = tgsi_util_get_full_src_register_swizzle( reg, chan_index );
 388    LLVMValueRef res;
 389    LLVMValueRef addr;
 390
 391    switch (swizzle) {
 392    case TGSI_SWIZZLE_X:
 393    case TGSI_SWIZZLE_Y:
 394    case TGSI_SWIZZLE_Z:
 395    case TGSI_SWIZZLE_W:
 396
 397       if (reg->Register.Indirect) {
 398          LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type);
 399          unsigned swizzle = tgsi_util_get_src_register_swizzle( &reg->Indirect, chan_index );
 400          addr = LLVMBuildLoad(bld->base.builder,
 401                               bld->addr[reg->Indirect.Index][swizzle],
 402                               "");
 403          /* for indexing we want integers */
 404          addr = LLVMBuildFPToSI(bld->base.builder, addr,
 405                                 int_vec_type, "");
 406          addr = LLVMBuildExtractElement(bld->base.builder,
 407                                         addr, LLVMConstInt(LLVMInt32Type(), 0, 0),
 408                                         "");
 409          addr = lp_build_mul(&bld->base, addr, LLVMConstInt(LLVMInt32Type(), 4, 0));
 410       }
 411
 412       switch (reg->Register.File) {
 413       case TGSI_FILE_CONSTANT: {
 414          LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), reg->Register.Index*4 + swizzle, 0);
 415          LLVMValueRef scalar, scalar_ptr;
 416
 417          if (reg->Register.Indirect) {
 418             /*lp_build_printf(bld->base.builder,
 419               "\taddr = %d\n", addr);*/
 420             index = lp_build_add(&bld->base, index, addr);
 421          }
 422          scalar_ptr = LLVMBuildGEP(bld->base.builder, bld->consts_ptr, &index, 1, "");
 423          scalar = LLVMBuildLoad(bld->base.builder, scalar_ptr, "");
 424
 425          res = lp_build_broadcast_scalar(&bld->base, scalar);
 426          break;
 427       }
 428
 429       case TGSI_FILE_IMMEDIATE:
 430          res = bld->immediates[reg->Register.Index][swizzle];
 431          assert(res);
 432          break;
 433
 434       case TGSI_FILE_INPUT:
 435          res = bld->inputs[reg->Register.Index][swizzle];
 436          assert(res);
 437          break;
 438
 439       case TGSI_FILE_TEMPORARY: {
 440          LLVMValueRef temp_ptr = get_temp_ptr(bld, reg->Register.Index,
 441                                               swizzle,
 442                                               reg->Register.Indirect,
 443                                               addr);
 444          res = LLVMBuildLoad(bld->base.builder, temp_ptr, "");
 445          if(!res)
 446             return bld->base.undef;
 447          break;
 448       }
 449
 450       default:
 451          assert( 0 );
 452          return bld->base.undef;
 453       }
 454       break;
 455
 456    default:
 457       assert( 0 );
 458       return bld->base.undef;
 459    }
 460
 461    switch( tgsi_util_get_full_src_register_sign_mode( reg, chan_index ) ) {
 462    case TGSI_UTIL_SIGN_CLEAR:
 463       res = lp_build_abs( &bld->base, res );
 464       break;
 465
 466    case TGSI_UTIL_SIGN_SET:
 467       /* TODO: Use bitwese OR for floating point */
 468       res = lp_build_abs( &bld->base, res );
 469       res = LLVMBuildNeg( bld->base.builder, res, "" );
 470       break;
 471
 472    case TGSI_UTIL_SIGN_TOGGLE:
 473       res = LLVMBuildNeg( bld->base.builder, res, "" );
 474       break;
 475
 476    case TGSI_UTIL_SIGN_KEEP:
 477       break;
 478    }
 479
 480    return res;
 481 }
 482
 483
 484 /**
 485  * Register fetch with derivatives.
 486  */
 487 static void
 488 emit_fetch_deriv(
 489    struct lp_build_tgsi_soa_context *bld,
 490    const struct tgsi_full_instruction *inst,
 491    unsigned index,
 492    const unsigned chan_index,
 493    LLVMValueRef *res,
 494    LLVMValueRef *ddx,
 495    LLVMValueRef *ddy)
 496 {
 497    LLVMValueRef src;
 498
 499    src = emit_fetch(bld, inst, index, chan_index);
 500
 501    if(res)
 502       *res = src;
 503
 504    /* TODO: use interpolation coeffs for inputs */
 505
 506    if(ddx)
 507       *ddx = emit_ddx(bld, src);
 508
 509    if(ddy)
 510       *ddy = emit_ddy(bld, src);
 511 }
 512
 513
 514 /**
 515  * Register store.
 516  */
 517 static void
 518 emit_store(
 519    struct lp_build_tgsi_soa_context *bld,
 520    const struct tgsi_full_instruction *inst,
 521    unsigned index,
 522    unsigned chan_index,
 523    LLVMValueRef value)
 524 {
 525    const struct tgsi_full_dst_register *reg = &inst->Dst[index];
 526    LLVMValueRef addr;
 527
 528    switch( inst->Instruction.Saturate ) {
 529    case TGSI_SAT_NONE:
 530       break;
 531
 532    case TGSI_SAT_ZERO_ONE:
 533       value = lp_build_max(&bld->base, value, bld->base.zero);
 534       value = lp_build_min(&bld->base, value, bld->base.one);
 535       break;
 536
 537    case TGSI_SAT_MINUS_PLUS_ONE:
 538       value = lp_build_max(&bld->base, value, lp_build_const_vec(bld->base.type, -1.0));
 539       value = lp_build_min(&bld->base, value, bld->base.one);
 540       break;
 541
 542    default:
 543       assert(0);
 544    }
 545
 546    if (reg->Register.Indirect) {
 547       LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type);
 548       unsigned swizzle = tgsi_util_get_src_register_swizzle( &reg->Indirect, chan_index );
 549       addr = LLVMBuildLoad(bld->base.builder,
 550                            bld->addr[reg->Indirect.Index][swizzle],
 551                            "");
 552       /* for indexing we want integers */
 553       addr = LLVMBuildFPToSI(bld->base.builder, addr,
 554                              int_vec_type, "");
 555       addr = LLVMBuildExtractElement(bld->base.builder,
 556                                      addr, LLVMConstInt(LLVMInt32Type(), 0, 0),
 557                                      "");
 558       addr = lp_build_mul(&bld->base, addr, LLVMConstInt(LLVMInt32Type(), 4, 0));
 559    }
 560
 561    switch( reg->Register.File ) {
 562    case TGSI_FILE_OUTPUT:
 563       lp_exec_mask_store(&bld->exec_mask, value,
 564                          bld->outputs[reg->Register.Index][chan_index]);
 565       break;
 566
 567    case TGSI_FILE_TEMPORARY: {
 568       LLVMValueRef temp_ptr = get_temp_ptr(bld, reg->Register.Index,
 569                                            chan_index,
 570                                            reg->Register.Indirect,
 571                                            addr);
 572       lp_exec_mask_store(&bld->exec_mask, value, temp_ptr);
 573       break;
 574    }
 575
 576    case TGSI_FILE_ADDRESS:
 577       lp_exec_mask_store(&bld->exec_mask, value,
 578                          bld->addr[reg->Indirect.Index][chan_index]);
 579       break;
 580
 581    case TGSI_FILE_PREDICATE:
 582       /* FIXME */
 583       break;
 584
 585    default:
 586       assert( 0 );
 587    }
 588 }
 589
 590
 591 /**
 592  * High-level instruction translators.
 593  */
 594
 595 enum tex_modifier {
 596    TEX_MODIFIER_NONE = 0,
 597    TEX_MODIFIER_PROJECTED,
 598    TEX_MODIFIER_LOD_BIAS,
 599    TEX_MODIFIER_EXPLICIT_LOD,
 600    TEX_MODIFIER_EXPLICIT_DERIV
 601 };
 602
 603 static void
 604 emit_tex( struct lp_build_tgsi_soa_context *bld,
 605           const struct tgsi_full_instruction *inst,
 606           enum tex_modifier modifier,
 607           LLVMValueRef *texel)
 608 {
 609    unsigned unit;
 610    LLVMValueRef lodbias;
 611    LLVMValueRef oow = NULL;
 612    LLVMValueRef coords[3];
 613    LLVMValueRef ddx[3];
 614    LLVMValueRef ddy[3];
 615    unsigned num_coords;
 616    unsigned i;
 617
 618    if (!bld->sampler) {
 619       _debug_printf("warning: found texture instruction but no sampler generator supplied\n");
 620       for (i = 0; i < 4; i++) {
 621          texel[i] = bld->base.undef;
 622       }
 623       return;
 624    }
 625
 626    switch (inst->Texture.Texture) {
 627    case TGSI_TEXTURE_1D:
 628       num_coords = 1;
 629       break;
 630    case TGSI_TEXTURE_2D:
 631    case TGSI_TEXTURE_RECT:
 632       num_coords = 2;
 633       break;
 634    case TGSI_TEXTURE_SHADOW1D:
 635    case TGSI_TEXTURE_SHADOW2D:
 636    case TGSI_TEXTURE_SHADOWRECT:
 637    case TGSI_TEXTURE_3D:
 638    case TGSI_TEXTURE_CUBE:
 639       num_coords = 3;
 640       break;
 641    default:
 642       assert(0);
 643       return;
 644    }
 645
 646    /* FIXME: Treat TEX_MODIFIER_EXPLICIT_LOD correctly */
 647    if (modifier == TEX_MODIFIER_LOD_BIAS || TEX_MODIFIER_EXPLICIT_LOD)
 648       lodbias = emit_fetch( bld, inst, 0, 3 );
 649    else
 650       lodbias = bld->base.zero;
 651
 652    if (modifier == TEX_MODIFIER_PROJECTED) {
 653       oow = emit_fetch( bld, inst, 0, 3 );
 654       oow = lp_build_rcp(&bld->base, oow);
 655    }
 656
 657    for (i = 0; i < num_coords; i++) {
 658       coords[i] = emit_fetch( bld, inst, 0, i );
 659       if (modifier == TEX_MODIFIER_PROJECTED)
 660          coords[i] = lp_build_mul(&bld->base, coords[i], oow);
 661    }
 662    for (i = num_coords; i < 3; i++) {
 663       coords[i] = bld->base.undef;
 664    }
 665
 666    if (modifier == TEX_MODIFIER_EXPLICIT_DERIV) {
 667       for (i = 0; i < num_coords; i++) {
 668          ddx[i] = emit_fetch( bld, inst, 1, i );
 669          ddy[i] = emit_fetch( bld, inst, 2, i );
 670       }
 671       unit = inst->Src[3].Register.Index;
 672    }  else {
 673       for (i = 0; i < num_coords; i++) {
 674          ddx[i] = emit_ddx( bld, coords[i] );
 675          ddy[i] = emit_ddy( bld, coords[i] );
 676       }
 677       unit = inst->Src[1].Register.Index;
 678    }
 679
 680    bld->sampler->emit_fetch_texel(bld->sampler,
 681                                   bld->base.builder,
 682                                   bld->base.type,
 683                                   unit, num_coords, coords,
 684                                   ddx, ddy, lodbias,
 685                                   texel);
 686 }
 687
 688
 689 /**
 690  * Kill fragment if any of the src register values are negative.
 691  */
 692 static void
 693 emit_kil(
 694    struct lp_build_tgsi_soa_context *bld,
 695    const struct tgsi_full_instruction *inst )
 696 {
 697    const struct tgsi_full_src_register *reg = &inst->Src[0];
 698    LLVMValueRef terms[NUM_CHANNELS];
 699    LLVMValueRef mask;
 700    unsigned chan_index;
 701
 702    memset(&terms, 0, sizeof terms);
 703
 704    FOR_EACH_CHANNEL( chan_index ) {
 705       unsigned swizzle;
 706
 707       /* Unswizzle channel */
 708       swizzle = tgsi_util_get_full_src_register_swizzle( reg, chan_index );
 709
 710       /* Check if the component has not been already tested. */
 711       assert(swizzle < NUM_CHANNELS);
 712       if( !terms[swizzle] )
 713          /* TODO: change the comparison operator instead of setting the sign */
 714          terms[swizzle] =  emit_fetch(bld, inst, 0, chan_index );
 715    }
 716
 717    mask = NULL;
 718    FOR_EACH_CHANNEL( chan_index ) {
 719       if(terms[chan_index]) {
 720          LLVMValueRef chan_mask;
 721
 722          /*
 723           * If term < 0 then mask = 0 else mask = ~0.
 724           */
 725          chan_mask = lp_build_cmp(&bld->base, PIPE_FUNC_GEQUAL, terms[chan_index], bld->base.zero);
 726
 727          if(mask)
 728             mask = LLVMBuildAnd(bld->base.builder, mask, chan_mask, "");
 729          else
 730             mask = chan_mask;
 731       }
 732    }
 733
 734    if(mask)
 735       lp_build_mask_update(bld->mask, mask);
 736 }
 737
 738
 739 /**
 740  * Predicated fragment kill.
 741  * XXX Actually, we do an unconditional kill (as in tgsi_exec.c).
 742  * The only predication is the execution mask which will apply if
 743  * we're inside a loop or conditional.
 744  */
 745 static void
 746 emit_kilp(struct lp_build_tgsi_soa_context *bld,
 747           const struct tgsi_full_instruction *inst)
 748 {
 749    LLVMValueRef mask;
 750
 751    /* For those channels which are "alive", disable fragment shader
 752     * execution.
 753     */
 754    if (bld->exec_mask.has_mask) {
 755       mask = LLVMBuildNot(bld->base.builder, bld->exec_mask.exec_mask, "kilp");
 756    }
 757    else {
 758       mask = bld->base.zero;
 759    }
 760
 761    lp_build_mask_update(bld->mask, mask);
 762 }
 763
 764 static void
 765 emit_declaration(
 766    struct lp_build_tgsi_soa_context *bld,
 767    const struct tgsi_full_declaration *decl)
 768 {
 769    LLVMTypeRef vec_type = lp_build_vec_type(bld->base.type);
 770
 771    unsigned first = decl->Range.First;
 772    unsigned last = decl->Range.Last;
 773    unsigned idx, i;
 774
 775    for (idx = first; idx <= last; ++idx) {
 776       switch (decl->Declaration.File) {
 777       case TGSI_FILE_TEMPORARY:
 778          assert(idx < LP_MAX_TGSI_TEMPS);
 779          if (bld->has_indirect_addressing) {
 780             LLVMValueRef val = LLVMConstInt(LLVMInt32Type(),
 781                                             last*4 + 4, 0);
 782             bld->temps_array = lp_build_array_alloca(bld->base.builder,
 783                                                      vec_type, val, "");
 784          } else {
 785             for (i = 0; i < NUM_CHANNELS; i++)
 786                bld->temps[idx][i] = lp_build_alloca(bld->base.builder,
 787                                                     vec_type, "");
 788          }
 789          break;
 790
 791       case TGSI_FILE_OUTPUT:
 792          for (i = 0; i < NUM_CHANNELS; i++)
 793             bld->outputs[idx][i] = lp_build_alloca(bld->base.builder,
 794                                                    vec_type, "");
 795          break;
 796
 797       case TGSI_FILE_ADDRESS:
 798          assert(idx < LP_MAX_TGSI_ADDRS);
 799          for (i = 0; i < NUM_CHANNELS; i++)
 800             bld->addr[idx][i] = lp_build_alloca(bld->base.builder,
 801                                                 vec_type, "");
 802          break;
 803
 804       case TGSI_FILE_PREDICATE:
 805          _debug_printf("warning: predicate registers not yet implemented\n");
 806          break;
 807
 808       default:
 809          /* don't need to declare other vars */
 810          break;
 811       }
 812    }
 813 }
 814
 815
 816 /**
 817  * Emit LLVM for one TGSI instruction.
 818  * \param return TRUE for success, FALSE otherwise
 819  */
 820 static boolean
 821 emit_instruction(
 822    struct lp_build_tgsi_soa_context *bld,
 823    const struct tgsi_full_instruction *inst,
 824    const struct tgsi_opcode_info *info)
 825 {
 826    unsigned chan_index;
 827    LLVMValueRef src0, src1, src2;
 828    LLVMValueRef tmp0, tmp1, tmp2;
 829    LLVMValueRef tmp3 = NULL;
 830    LLVMValueRef tmp4 = NULL;
 831    LLVMValueRef tmp5 = NULL;
 832    LLVMValueRef tmp6 = NULL;
 833    LLVMValueRef tmp7 = NULL;
 834    LLVMValueRef res;
 835    LLVMValueRef dst0[NUM_CHANNELS];
 836
 837    /*
 838     * Stores and write masks are handled in a general fashion after the long
 839     * instruction opcode switch statement.
 840     *
 841     * Although not stricitly necessary, we avoid generating instructions for
 842     * channels which won't be stored, in cases where's that easy. For some
 843     * complex instructions, like texture sampling, it is more convenient to
 844     * assume a full writemask and then let LLVM optimization passes eliminate
 845     * redundant code.
 846     */
 847
 848    assert(info->num_dst <= 1);
 849    if(info->num_dst) {
 850       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 851          dst0[chan_index] = bld->base.undef;
 852       }
 853    }
 854
 855    switch (inst->Instruction.Opcode) {
 856    case TGSI_OPCODE_ARL:
 857       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 858          tmp0 = emit_fetch( bld, inst, 0, chan_index );
 859          tmp0 = lp_build_floor(&bld->base, tmp0);
 860          dst0[chan_index] = tmp0;
 861       }
 862       break;
 863
 864    case TGSI_OPCODE_MOV:
 865       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 866          dst0[chan_index] = emit_fetch( bld, inst, 0, chan_index );
 867       }
 868       break;
 869
 870    case TGSI_OPCODE_LIT:
 871       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) ) {
 872          dst0[CHAN_X] = bld->base.one;
 873       }
 874       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) ) {
 875          src0 = emit_fetch( bld, inst, 0, CHAN_X );
 876          dst0[CHAN_Y] = lp_build_max( &bld->base, src0, bld->base.zero);
 877       }
 878       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) ) {
 879          /* XMM[1] = SrcReg[0].yyyy */
 880          tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );
 881          /* XMM[1] = max(XMM[1], 0) */
 882          tmp1 = lp_build_max( &bld->base, tmp1, bld->base.zero);
 883          /* XMM[2] = SrcReg[0].wwww */
 884          tmp2 = emit_fetch( bld, inst, 0, CHAN_W );
 885          tmp1 = lp_build_pow( &bld->base, tmp1, tmp2);
 886          tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
 887          tmp2 = lp_build_cmp(&bld->base, PIPE_FUNC_GREATER, tmp0, bld->base.zero);
 888          dst0[CHAN_Z] = lp_build_select(&bld->base, tmp2, tmp1, bld->base.zero);
 889       }
 890       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_W ) ) {
 891          dst0[CHAN_W] = bld->base.one;
 892       }
 893       break;
 894
 895    case TGSI_OPCODE_RCP:
 896    /* TGSI_OPCODE_RECIP */
 897       src0 = emit_fetch( bld, inst, 0, CHAN_X );
 898       res = lp_build_rcp(&bld->base, src0);
 899       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 900          dst0[chan_index] = res;
 901       }
 902       break;
 903
 904    case TGSI_OPCODE_RSQ:
 905    /* TGSI_OPCODE_RECIPSQRT */
 906       src0 = emit_fetch( bld, inst, 0, CHAN_X );
 907       src0 = lp_build_abs(&bld->base, src0);
 908       res = lp_build_rsqrt(&bld->base, src0);
 909       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 910          dst0[chan_index] = res;
 911       }
 912       break;
 913
 914    case TGSI_OPCODE_EXP:
 915       if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) ||
 916           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) ||
 917           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z )) {
 918          LLVMValueRef *p_exp2_int_part = NULL;
 919          LLVMValueRef *p_frac_part = NULL;
 920          LLVMValueRef *p_exp2 = NULL;
 921
 922          src0 = emit_fetch( bld, inst, 0, CHAN_X );
 923
 924          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ))
 925             p_exp2_int_part = &tmp0;
 926          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ))
 927             p_frac_part = &tmp1;
 928          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ))
 929             p_exp2 = &tmp2;
 930
 931          lp_build_exp2_approx(&bld->base, src0, p_exp2_int_part, p_frac_part, p_exp2);
 932
 933          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ))
 934             dst0[CHAN_X] = tmp0;
 935          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ))
 936             dst0[CHAN_Y] = tmp1;
 937          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ))
 938             dst0[CHAN_Z] = tmp2;
 939       }
 940       /* dst.w = 1.0 */
 941       if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_W )) {
 942          dst0[CHAN_W] = bld->base.one;
 943       }
 944       break;
 945
 946    case TGSI_OPCODE_LOG:
 947       if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) ||
 948           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) ||
 949           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z )) {
 950          LLVMValueRef *p_floor_log2 = NULL;
 951          LLVMValueRef *p_exp = NULL;
 952          LLVMValueRef *p_log2 = NULL;
 953
 954          src0 = emit_fetch( bld, inst, 0, CHAN_X );
 955          src0 = lp_build_abs( &bld->base, src0 );
 956
 957          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ))
 958             p_floor_log2 = &tmp0;
 959          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ))
 960             p_exp = &tmp1;
 961          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ))
 962             p_log2 = &tmp2;
 963
 964          lp_build_log2_approx(&bld->base, src0, p_exp, p_floor_log2, p_log2);
 965
 966          /* dst.x = floor(lg2(abs(src.x))) */
 967          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ))
 968             dst0[CHAN_X] = tmp0;
 969          /* dst.y = abs(src)/ex2(floor(lg2(abs(src.x)))) */
 970          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y )) {
 971             dst0[CHAN_Y] = lp_build_div( &bld->base, src0, tmp1);
 972          }
 973          /* dst.z = lg2(abs(src.x)) */
 974          if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ))
 975             dst0[CHAN_Z] = tmp2;
 976       }
 977       /* dst.w = 1.0 */
 978       if (IS_DST0_CHANNEL_ENABLED( inst, CHAN_W )) {
 979          dst0[CHAN_W] = bld->base.one;
 980       }
 981       break;
 982
 983    case TGSI_OPCODE_MUL:
 984       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 985          src0 = emit_fetch( bld, inst, 0, chan_index );
 986          src1 = emit_fetch( bld, inst, 1, chan_index );
 987          dst0[chan_index] = lp_build_mul(&bld->base, src0, src1);
 988       }
 989       break;
 990
 991    case TGSI_OPCODE_ADD:
 992       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
 993          src0 = emit_fetch( bld, inst, 0, chan_index );
 994          src1 = emit_fetch( bld, inst, 1, chan_index );
 995          dst0[chan_index] = lp_build_add(&bld->base, src0, src1);
 996       }
 997       break;
 998
 999    case TGSI_OPCODE_DP3:
1000    /* TGSI_OPCODE_DOT3 */
1001       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1002       tmp1 = emit_fetch( bld, inst, 1, CHAN_X );
1003       tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);
1004       tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );
1005       tmp2 = emit_fetch( bld, inst, 1, CHAN_Y );
1006       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1007       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1008       tmp1 = emit_fetch( bld, inst, 0, CHAN_Z );
1009       tmp2 = emit_fetch( bld, inst, 1, CHAN_Z );
1010       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1011       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1012       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1013          dst0[chan_index] = tmp0;
1014       }
1015       break;
1016
1017    case TGSI_OPCODE_DP4:
1018    /* TGSI_OPCODE_DOT4 */
1019       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1020       tmp1 = emit_fetch( bld, inst, 1, CHAN_X );
1021       tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);
1022       tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );
1023       tmp2 = emit_fetch( bld, inst, 1, CHAN_Y );
1024       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1025       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1026       tmp1 = emit_fetch( bld, inst, 0, CHAN_Z );
1027       tmp2 = emit_fetch( bld, inst, 1, CHAN_Z );
1028       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1029       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1030       tmp1 = emit_fetch( bld, inst, 0, CHAN_W );
1031       tmp2 = emit_fetch( bld, inst, 1, CHAN_W );
1032       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1033       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1034       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1035          dst0[chan_index] = tmp0;
1036       }
1037       break;
1038
1039    case TGSI_OPCODE_DST:
1040       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) {
1041          dst0[CHAN_X] = bld->base.one;
1042       }
1043       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) {
1044          tmp0 = emit_fetch( bld, inst, 0, CHAN_Y );
1045          tmp1 = emit_fetch( bld, inst, 1, CHAN_Y );
1046          dst0[CHAN_Y] = lp_build_mul( &bld->base, tmp0, tmp1);
1047       }
1048       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) {
1049          dst0[CHAN_Z] = emit_fetch( bld, inst, 0, CHAN_Z );
1050       }
1051       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_W ) {
1052          dst0[CHAN_W] = emit_fetch( bld, inst, 1, CHAN_W );
1053       }
1054       break;
1055
1056    case TGSI_OPCODE_MIN:
1057       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1058          src0 = emit_fetch( bld, inst, 0, chan_index );
1059          src1 = emit_fetch( bld, inst, 1, chan_index );
1060          dst0[chan_index] = lp_build_min( &bld->base, src0, src1 );
1061       }
1062       break;
1063
1064    case TGSI_OPCODE_MAX:
1065       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1066          src0 = emit_fetch( bld, inst, 0, chan_index );
1067          src1 = emit_fetch( bld, inst, 1, chan_index );
1068          dst0[chan_index] = lp_build_max( &bld->base, src0, src1 );
1069       }
1070       break;
1071
1072    case TGSI_OPCODE_SLT:
1073    /* TGSI_OPCODE_SETLT */
1074       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1075          src0 = emit_fetch( bld, inst, 0, chan_index );
1076          src1 = emit_fetch( bld, inst, 1, chan_index );
1077          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_LESS, src0, src1 );
1078          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1079       }
1080       break;
1081
1082    case TGSI_OPCODE_SGE:
1083    /* TGSI_OPCODE_SETGE */
1084       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1085          src0 = emit_fetch( bld, inst, 0, chan_index );
1086          src1 = emit_fetch( bld, inst, 1, chan_index );
1087          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_GEQUAL, src0, src1 );
1088          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1089       }
1090       break;
1091
1092    case TGSI_OPCODE_MAD:
1093    /* TGSI_OPCODE_MADD */
1094       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1095          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1096          tmp1 = emit_fetch( bld, inst, 1, chan_index );
1097          tmp2 = emit_fetch( bld, inst, 2, chan_index );
1098          tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);
1099          tmp0 = lp_build_add( &bld->base, tmp0, tmp2);
1100          dst0[chan_index] = tmp0;
1101       }
1102       break;
1103
1104    case TGSI_OPCODE_SUB:
1105       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1106          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1107          tmp1 = emit_fetch( bld, inst, 1, chan_index );
1108          dst0[chan_index] = lp_build_sub( &bld->base, tmp0, tmp1);
1109       }
1110       break;
1111
1112    case TGSI_OPCODE_LRP:
1113       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1114          src0 = emit_fetch( bld, inst, 0, chan_index );
1115          src1 = emit_fetch( bld, inst, 1, chan_index );
1116          src2 = emit_fetch( bld, inst, 2, chan_index );
1117          tmp0 = lp_build_sub( &bld->base, src1, src2 );
1118          tmp0 = lp_build_mul( &bld->base, src0, tmp0 );
1119          dst0[chan_index] = lp_build_add( &bld->base, tmp0, src2 );
1120       }
1121       break;
1122
1123    case TGSI_OPCODE_CND:
1124       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1125          src0 = emit_fetch( bld, inst, 0, chan_index );
1126          src1 = emit_fetch( bld, inst, 1, chan_index );
1127          src2 = emit_fetch( bld, inst, 2, chan_index );
1128          tmp1 = lp_build_const_vec(bld->base.type, 0.5);
1129          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_GREATER, src2, tmp1);
1130          dst0[chan_index] = lp_build_select( &bld->base, tmp0, src0, src1 );
1131       }
1132       break;
1133
1134    case TGSI_OPCODE_DP2A:
1135       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );  /* xmm0 = src[0].x */
1136       tmp1 = emit_fetch( bld, inst, 1, CHAN_X );  /* xmm1 = src[1].x */
1137       tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);              /* xmm0 = xmm0 * xmm1 */
1138       tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );  /* xmm1 = src[0].y */
1139       tmp2 = emit_fetch( bld, inst, 1, CHAN_Y );  /* xmm2 = src[1].y */
1140       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);              /* xmm1 = xmm1 * xmm2 */
1141       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);              /* xmm0 = xmm0 + xmm1 */
1142       tmp1 = emit_fetch( bld, inst, 2, CHAN_X );  /* xmm1 = src[2].x */
1143       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);              /* xmm0 = xmm0 + xmm1 */
1144       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1145          dst0[chan_index] = tmp0;  /* dest[ch] = xmm0 */
1146       }
1147       break;
1148
1149    case TGSI_OPCODE_FRC:
1150       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1151          src0 = emit_fetch( bld, inst, 0, chan_index );
1152          tmp0 = lp_build_floor(&bld->base, src0);
1153          tmp0 = lp_build_sub(&bld->base, src0, tmp0);
1154          dst0[chan_index] = tmp0;
1155       }
1156       break;
1157
1158    case TGSI_OPCODE_CLAMP:
1159       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1160          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1161          src1 = emit_fetch( bld, inst, 1, chan_index );
1162          src2 = emit_fetch( bld, inst, 2, chan_index );
1163          tmp0 = lp_build_max(&bld->base, tmp0, src1);
1164          tmp0 = lp_build_min(&bld->base, tmp0, src2);
1165          dst0[chan_index] = tmp0;
1166       }
1167       break;
1168
1169    case TGSI_OPCODE_FLR:
1170       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1171          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1172          dst0[chan_index] = lp_build_floor(&bld->base, tmp0);
1173       }
1174       break;
1175
1176    case TGSI_OPCODE_ROUND:
1177       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1178          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1179          dst0[chan_index] = lp_build_round(&bld->base, tmp0);
1180       }
1181       break;
1182
1183    case TGSI_OPCODE_EX2: {
1184       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1185       tmp0 = lp_build_exp2( &bld->base, tmp0);
1186       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1187          dst0[chan_index] = tmp0;
1188       }
1189       break;
1190    }
1191
1192    case TGSI_OPCODE_LG2:
1193       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1194       tmp0 = lp_build_log2( &bld->base, tmp0);
1195       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1196          dst0[chan_index] = tmp0;
1197       }
1198       break;
1199
1200    case TGSI_OPCODE_POW:
1201       src0 = emit_fetch( bld, inst, 0, CHAN_X );
1202       src1 = emit_fetch( bld, inst, 1, CHAN_X );
1203       res = lp_build_pow( &bld->base, src0, src1 );
1204       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1205          dst0[chan_index] = res;
1206       }
1207       break;
1208
1209    case TGSI_OPCODE_XPD:
1210       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) ||
1211           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) ) {
1212          tmp1 = emit_fetch( bld, inst, 1, CHAN_Z );
1213          tmp3 = emit_fetch( bld, inst, 0, CHAN_Z );
1214       }
1215       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) ||
1216           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) ) {
1217          tmp0 = emit_fetch( bld, inst, 0, CHAN_Y );
1218          tmp4 = emit_fetch( bld, inst, 1, CHAN_Y );
1219       }
1220       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) {
1221          tmp2 = tmp0;
1222          tmp2 = lp_build_mul( &bld->base, tmp2, tmp1);
1223          tmp5 = tmp3;
1224          tmp5 = lp_build_mul( &bld->base, tmp5, tmp4);
1225          tmp2 = lp_build_sub( &bld->base, tmp2, tmp5);
1226          dst0[CHAN_X] = tmp2;
1227       }
1228       if( IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) ||
1229           IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) ) {
1230          tmp2 = emit_fetch( bld, inst, 1, CHAN_X );
1231          tmp5 = emit_fetch( bld, inst, 0, CHAN_X );
1232       }
1233       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) {
1234          tmp3 = lp_build_mul( &bld->base, tmp3, tmp2);
1235          tmp1 = lp_build_mul( &bld->base, tmp1, tmp5);
1236          tmp3 = lp_build_sub( &bld->base, tmp3, tmp1);
1237          dst0[CHAN_Y] = tmp3;
1238       }
1239       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) {
1240          tmp5 = lp_build_mul( &bld->base, tmp5, tmp4);
1241          tmp0 = lp_build_mul( &bld->base, tmp0, tmp2);
1242          tmp5 = lp_build_sub( &bld->base, tmp5, tmp0);
1243          dst0[CHAN_Z] = tmp5;
1244       }
1245       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_W ) {
1246          dst0[CHAN_W] = bld->base.one;
1247       }
1248       break;
1249
1250    case TGSI_OPCODE_ABS:
1251       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1252          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1253          dst0[chan_index] = lp_build_abs( &bld->base, tmp0 );
1254       }
1255       break;
1256
1257    case TGSI_OPCODE_RCC:
1258       /* deprecated? */
1259       assert(0);
1260       return FALSE;
1261
1262    case TGSI_OPCODE_DPH:
1263       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1264       tmp1 = emit_fetch( bld, inst, 1, CHAN_X );
1265       tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);
1266       tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );
1267       tmp2 = emit_fetch( bld, inst, 1, CHAN_Y );
1268       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1269       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1270       tmp1 = emit_fetch( bld, inst, 0, CHAN_Z );
1271       tmp2 = emit_fetch( bld, inst, 1, CHAN_Z );
1272       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);
1273       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1274       tmp1 = emit_fetch( bld, inst, 1, CHAN_W );
1275       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1276       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1277          dst0[chan_index] = tmp0;
1278       }
1279       break;
1280
1281    case TGSI_OPCODE_COS:
1282       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1283       tmp0 = lp_build_cos( &bld->base, tmp0 );
1284       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1285          dst0[chan_index] = tmp0;
1286       }
1287       break;
1288
1289    case TGSI_OPCODE_DDX:
1290       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1291          emit_fetch_deriv( bld, inst, 0, chan_index, NULL, &dst0[chan_index], NULL);
1292       }
1293       break;
1294
1295    case TGSI_OPCODE_DDY:
1296       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1297          emit_fetch_deriv( bld, inst, 0, chan_index, NULL, NULL, &dst0[chan_index]);
1298       }
1299       break;
1300
1301    case TGSI_OPCODE_KILP:
1302       /* predicated kill */
1303       emit_kilp( bld, inst );
1304       break;
1305
1306    case TGSI_OPCODE_KIL:
1307       /* conditional kill */
1308       emit_kil( bld, inst );
1309       break;
1310
1311    case TGSI_OPCODE_PK2H:
1312       return FALSE;
1313       break;
1314
1315    case TGSI_OPCODE_PK2US:
1316       return FALSE;
1317       break;
1318
1319    case TGSI_OPCODE_PK4B:
1320       return FALSE;
1321       break;
1322
1323    case TGSI_OPCODE_PK4UB:
1324       return FALSE;
1325       break;
1326
1327    case TGSI_OPCODE_RFL:
1328       return FALSE;
1329       break;
1330
1331    case TGSI_OPCODE_SEQ:
1332       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1333          src0 = emit_fetch( bld, inst, 0, chan_index );
1334          src1 = emit_fetch( bld, inst, 1, chan_index );
1335          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_EQUAL, src0, src1 );
1336          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1337       }
1338       break;
1339
1340    case TGSI_OPCODE_SFL:
1341       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1342          dst0[chan_index] = bld->base.zero;
1343       }
1344       break;
1345
1346    case TGSI_OPCODE_SGT:
1347       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1348          src0 = emit_fetch( bld, inst, 0, chan_index );
1349          src1 = emit_fetch( bld, inst, 1, chan_index );
1350          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_GREATER, src0, src1 );
1351          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1352       }
1353       break;
1354
1355    case TGSI_OPCODE_SIN:
1356       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1357       tmp0 = lp_build_sin( &bld->base, tmp0 );
1358       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1359          dst0[chan_index] = tmp0;
1360       }
1361       break;
1362
1363    case TGSI_OPCODE_SLE:
1364       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1365          src0 = emit_fetch( bld, inst, 0, chan_index );
1366          src1 = emit_fetch( bld, inst, 1, chan_index );
1367          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_LEQUAL, src0, src1 );
1368          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1369       }
1370       break;
1371
1372    case TGSI_OPCODE_SNE:
1373       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1374          src0 = emit_fetch( bld, inst, 0, chan_index );
1375          src1 = emit_fetch( bld, inst, 1, chan_index );
1376          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_NOTEQUAL, src0, src1 );
1377          dst0[chan_index] = lp_build_select( &bld->base, tmp0, bld->base.one, bld->base.zero );
1378       }
1379       break;
1380
1381    case TGSI_OPCODE_STR:
1382       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1383          dst0[chan_index] = bld->base.one;
1384       }
1385       break;
1386
1387    case TGSI_OPCODE_TEX:
1388       emit_tex( bld, inst, TEX_MODIFIER_NONE, dst0 );
1389       break;
1390
1391    case TGSI_OPCODE_TXD:
1392       emit_tex( bld, inst, TEX_MODIFIER_EXPLICIT_DERIV, dst0 );
1393       break;
1394
1395    case TGSI_OPCODE_UP2H:
1396       /* deprecated */
1397       assert (0);
1398       return FALSE;
1399       break;
1400
1401    case TGSI_OPCODE_UP2US:
1402       /* deprecated */
1403       assert(0);
1404       return FALSE;
1405       break;
1406
1407    case TGSI_OPCODE_UP4B:
1408       /* deprecated */
1409       assert(0);
1410       return FALSE;
1411       break;
1412
1413    case TGSI_OPCODE_UP4UB:
1414       /* deprecated */
1415       assert(0);
1416       return FALSE;
1417       break;
1418
1419    case TGSI_OPCODE_X2D:
1420       /* deprecated? */
1421       assert(0);
1422       return FALSE;
1423       break;
1424
1425    case TGSI_OPCODE_ARA:
1426       /* deprecated */
1427       assert(0);
1428       return FALSE;
1429       break;
1430
1431    case TGSI_OPCODE_ARR:
1432       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1433          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1434          tmp0 = lp_build_round(&bld->base, tmp0);
1435          dst0[chan_index] = tmp0;
1436       }
1437       break;
1438
1439    case TGSI_OPCODE_BRA:
1440       /* deprecated */
1441       assert(0);
1442       return FALSE;
1443       break;
1444
1445    case TGSI_OPCODE_CAL:
1446       /* FIXME */
1447       return FALSE;
1448       break;
1449
1450    case TGSI_OPCODE_RET:
1451       /* FIXME */
1452       return FALSE;
1453       break;
1454
1455    case TGSI_OPCODE_END:
1456       break;
1457
1458    case TGSI_OPCODE_SSG:
1459    /* TGSI_OPCODE_SGN */
1460       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1461          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1462          dst0[chan_index] = lp_build_sgn( &bld->base, tmp0 );
1463       }
1464       break;
1465
1466    case TGSI_OPCODE_CMP:
1467       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1468          src0 = emit_fetch( bld, inst, 0, chan_index );
1469          src1 = emit_fetch( bld, inst, 1, chan_index );
1470          src2 = emit_fetch( bld, inst, 2, chan_index );
1471          tmp0 = lp_build_cmp( &bld->base, PIPE_FUNC_LESS, src0, bld->base.zero );
1472          dst0[chan_index] = lp_build_select( &bld->base, tmp0, src1, src2);
1473       }
1474       break;
1475
1476    case TGSI_OPCODE_SCS:
1477       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_X ) {
1478          tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1479          dst0[CHAN_X] = lp_build_cos( &bld->base, tmp0 );
1480       }
1481       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Y ) {
1482          tmp0 = emit_fetch( bld, inst, 0, CHAN_X );
1483          dst0[CHAN_Y] = lp_build_sin( &bld->base, tmp0 );
1484       }
1485       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_Z ) {
1486          dst0[CHAN_Z] = bld->base.zero;
1487       }
1488       IF_IS_DST0_CHANNEL_ENABLED( inst, CHAN_W ) {
1489          dst0[CHAN_W] = bld->base.one;
1490       }
1491       break;
1492
1493    case TGSI_OPCODE_TXB:
1494       emit_tex( bld, inst, TEX_MODIFIER_LOD_BIAS, dst0 );
1495       break;
1496
1497    case TGSI_OPCODE_NRM:
1498       /* fall-through */
1499    case TGSI_OPCODE_NRM4:
1500       /* 3 or 4-component normalization */
1501       {
1502          uint dims = (inst->Instruction.Opcode == TGSI_OPCODE_NRM) ? 3 : 4;
1503
1504          if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_X) ||
1505              IS_DST0_CHANNEL_ENABLED(inst, CHAN_Y) ||
1506              IS_DST0_CHANNEL_ENABLED(inst, CHAN_Z) ||
1507              (IS_DST0_CHANNEL_ENABLED(inst, CHAN_W) && dims == 4)) {
1508
1509             /* NOTE: Cannot use xmm regs 2/3 here (see emit_rsqrt() above). */
1510
1511             /* xmm4 = src.x */
1512             /* xmm0 = src.x * src.x */
1513             tmp0 = emit_fetch(bld, inst, 0, CHAN_X);
1514             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_X)) {
1515                tmp4 = tmp0;
1516             }
1517             tmp0 = lp_build_mul( &bld->base, tmp0, tmp0);
1518
1519             /* xmm5 = src.y */
1520             /* xmm0 = xmm0 + src.y * src.y */
1521             tmp1 = emit_fetch(bld, inst, 0, CHAN_Y);
1522             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_Y)) {
1523                tmp5 = tmp1;
1524             }
1525             tmp1 = lp_build_mul( &bld->base, tmp1, tmp1);
1526             tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1527
1528             /* xmm6 = src.z */
1529             /* xmm0 = xmm0 + src.z * src.z */
1530             tmp1 = emit_fetch(bld, inst, 0, CHAN_Z);
1531             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_Z)) {
1532                tmp6 = tmp1;
1533             }
1534             tmp1 = lp_build_mul( &bld->base, tmp1, tmp1);
1535             tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1536
1537             if (dims == 4) {
1538                /* xmm7 = src.w */
1539                /* xmm0 = xmm0 + src.w * src.w */
1540                tmp1 = emit_fetch(bld, inst, 0, CHAN_W);
1541                if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_W)) {
1542                   tmp7 = tmp1;
1543                }
1544                tmp1 = lp_build_mul( &bld->base, tmp1, tmp1);
1545                tmp0 = lp_build_add( &bld->base, tmp0, tmp1);
1546             }
1547
1548             /* xmm1 = 1 / sqrt(xmm0) */
1549             tmp1 = lp_build_rsqrt( &bld->base, tmp0);
1550
1551             /* dst.x = xmm1 * src.x */
1552             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_X)) {
1553                dst0[CHAN_X] = lp_build_mul( &bld->base, tmp4, tmp1);
1554             }
1555
1556             /* dst.y = xmm1 * src.y */
1557             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_Y)) {
1558                dst0[CHAN_Y] = lp_build_mul( &bld->base, tmp5, tmp1);
1559             }
1560
1561             /* dst.z = xmm1 * src.z */
1562             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_Z)) {
1563                dst0[CHAN_Z] = lp_build_mul( &bld->base, tmp6, tmp1);
1564             }
1565
1566             /* dst.w = xmm1 * src.w */
1567             if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_X) && dims == 4) {
1568                dst0[CHAN_W] = lp_build_mul( &bld->base, tmp7, tmp1);
1569             }
1570          }
1571
1572          /* dst.w = 1.0 */
1573          if (IS_DST0_CHANNEL_ENABLED(inst, CHAN_W) && dims == 3) {
1574             dst0[CHAN_W] = bld->base.one;
1575          }
1576       }
1577       break;
1578
1579    case TGSI_OPCODE_DIV:
1580       /* deprecated */
1581       assert( 0 );
1582       return FALSE;
1583       break;
1584
1585    case TGSI_OPCODE_DP2:
1586       tmp0 = emit_fetch( bld, inst, 0, CHAN_X );  /* xmm0 = src[0].x */
1587       tmp1 = emit_fetch( bld, inst, 1, CHAN_X );  /* xmm1 = src[1].x */
1588       tmp0 = lp_build_mul( &bld->base, tmp0, tmp1);              /* xmm0 = xmm0 * xmm1 */
1589       tmp1 = emit_fetch( bld, inst, 0, CHAN_Y );  /* xmm1 = src[0].y */
1590       tmp2 = emit_fetch( bld, inst, 1, CHAN_Y );  /* xmm2 = src[1].y */
1591       tmp1 = lp_build_mul( &bld->base, tmp1, tmp2);              /* xmm1 = xmm1 * xmm2 */
1592       tmp0 = lp_build_add( &bld->base, tmp0, tmp1);              /* xmm0 = xmm0 + xmm1 */
1593       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1594          dst0[chan_index] = tmp0;  /* dest[ch] = xmm0 */
1595       }
1596       break;
1597
1598    case TGSI_OPCODE_TXL:
1599       emit_tex( bld, inst, TEX_MODIFIER_EXPLICIT_LOD, dst0 );
1600       break;
1601
1602    case TGSI_OPCODE_TXP:
1603       emit_tex( bld, inst, TEX_MODIFIER_PROJECTED, dst0 );
1604       break;
1605
1606    case TGSI_OPCODE_BRK:
1607       lp_exec_break(&bld->exec_mask);
1608       break;
1609
1610    case TGSI_OPCODE_IF:
1611       tmp0 = emit_fetch(bld, inst, 0, CHAN_X);
1612       tmp0 = lp_build_cmp(&bld->base, PIPE_FUNC_NOTEQUAL,
1613                           tmp0, bld->base.zero);
1614       lp_exec_mask_cond_push(&bld->exec_mask, tmp0);
1615       break;
1616
1617    case TGSI_OPCODE_BGNLOOP:
1618       lp_exec_bgnloop(&bld->exec_mask);
1619       break;
1620
1621    case TGSI_OPCODE_ELSE:
1622       lp_exec_mask_cond_invert(&bld->exec_mask);
1623       break;
1624
1625    case TGSI_OPCODE_ENDIF:
1626       lp_exec_mask_cond_pop(&bld->exec_mask);
1627       break;
1628
1629    case TGSI_OPCODE_ENDLOOP:
1630       lp_exec_endloop(&bld->exec_mask);
1631       break;
1632
1633    case TGSI_OPCODE_PUSHA:
1634       /* deprecated? */
1635       assert(0);
1636       return FALSE;
1637       break;
1638
1639    case TGSI_OPCODE_POPA:
1640       /* deprecated? */
1641       assert(0);
1642       return FALSE;
1643       break;
1644
1645    case TGSI_OPCODE_CEIL:
1646       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1647          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1648          dst0[chan_index] = lp_build_ceil(&bld->base, tmp0);
1649       }
1650       break;
1651
1652    case TGSI_OPCODE_I2F:
1653       /* deprecated? */
1654       assert(0);
1655       return FALSE;
1656       break;
1657
1658    case TGSI_OPCODE_NOT:
1659       /* deprecated? */
1660       assert(0);
1661       return FALSE;
1662       break;
1663
1664    case TGSI_OPCODE_TRUNC:
1665       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1666          tmp0 = emit_fetch( bld, inst, 0, chan_index );
1667          dst0[chan_index] = lp_build_trunc(&bld->base, tmp0);
1668       }
1669       break;
1670
1671    case TGSI_OPCODE_SHL:
1672       /* deprecated? */
1673       assert(0);
1674       return FALSE;
1675       break;
1676
1677    case TGSI_OPCODE_ISHR:
1678       /* deprecated? */
1679       assert(0);
1680       return FALSE;
1681       break;
1682
1683    case TGSI_OPCODE_AND:
1684       /* deprecated? */
1685       assert(0);
1686       return FALSE;
1687       break;
1688
1689    case TGSI_OPCODE_OR:
1690       /* deprecated? */
1691       assert(0);
1692       return FALSE;
1693       break;
1694
1695    case TGSI_OPCODE_MOD:
1696       /* deprecated? */
1697       assert(0);
1698       return FALSE;
1699       break;
1700
1701    case TGSI_OPCODE_XOR:
1702       /* deprecated? */
1703       assert(0);
1704       return FALSE;
1705       break;
1706
1707    case TGSI_OPCODE_SAD:
1708       /* deprecated? */
1709       assert(0);
1710       return FALSE;
1711       break;
1712
1713    case TGSI_OPCODE_TXF:
1714       /* deprecated? */
1715       assert(0);
1716       return FALSE;
1717       break;
1718
1719    case TGSI_OPCODE_TXQ:
1720       /* deprecated? */
1721       assert(0);
1722       return FALSE;
1723       break;
1724
1725    case TGSI_OPCODE_CONT:
1726       lp_exec_continue(&bld->exec_mask);
1727       break;
1728
1729    case TGSI_OPCODE_EMIT:
1730       return FALSE;
1731       break;
1732
1733    case TGSI_OPCODE_ENDPRIM:
1734       return FALSE;
1735       break;
1736
1737    case TGSI_OPCODE_NOP:
1738       break;
1739
1740    default:
1741       return FALSE;
1742    }
1743
1744    if(info->num_dst) {
1745       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1746          emit_store( bld, inst, 0, chan_index, dst0[chan_index]);
1747       }
1748    }
1749
1750    return TRUE;
1751 }
1752
1753
1754 void
1755 lp_build_tgsi_soa(LLVMBuilderRef builder,
1756                   const struct tgsi_token *tokens,
1757                   struct lp_type type,
1758                   struct lp_build_mask_context *mask,
1759                   LLVMValueRef consts_ptr,
1760                   const LLVMValueRef *pos,
1761                   const LLVMValueRef (*inputs)[NUM_CHANNELS],
1762                   LLVMValueRef (*outputs)[NUM_CHANNELS],
1763                   struct lp_build_sampler_soa *sampler,
1764                   struct tgsi_shader_info *info)
1765 {
1766    struct lp_build_tgsi_soa_context bld;
1767    struct tgsi_parse_context parse;
1768    uint num_immediates = 0;
1769    unsigned i;
1770
1771    /* Setup build context */
1772    memset(&bld, 0, sizeof bld);
1773    lp_build_context_init(&bld.base, builder, type);
1774    bld.mask = mask;
1775    bld.pos = pos;
1776    bld.inputs = inputs;
1777    bld.outputs = outputs;
1778    bld.consts_ptr = consts_ptr;
1779    bld.sampler = sampler;
1780    bld.has_indirect_addressing = info->opcode_count[TGSI_OPCODE_ARR] > 0 ||
1781                                  info->opcode_count[TGSI_OPCODE_ARL] > 0;
1782
1783    lp_exec_mask_init(&bld.exec_mask, &bld.base);
1784
1785    tgsi_parse_init( &parse, tokens );
1786
1787    while( !tgsi_parse_end_of_tokens( &parse ) ) {
1788       tgsi_parse_token( &parse );
1789
1790       switch( parse.FullToken.Token.Type ) {
1791       case TGSI_TOKEN_TYPE_DECLARATION:
1792          /* Inputs already interpolated */
1793          emit_declaration( &bld, &parse.FullToken.FullDeclaration );
1794          break;
1795
1796       case TGSI_TOKEN_TYPE_INSTRUCTION:
1797          {
1798             unsigned opcode = parse.FullToken.FullInstruction.Instruction.Opcode;
1799             const struct tgsi_opcode_info *opcode_info = tgsi_get_opcode_info(opcode);
1800             if (!emit_instruction( &bld, &parse.FullToken.FullInstruction, opcode_info ))
1801                _debug_printf("warning: failed to translate tgsi opcode %s to LLVM\n",
1802                              opcode_info->mnemonic);
1803          }
1804
1805          break;
1806
1807       case TGSI_TOKEN_TYPE_IMMEDIATE:
1808          /* simply copy the immediate values into the next immediates[] slot */
1809          {
1810             const uint size = parse.FullToken.FullImmediate.Immediate.NrTokens - 1;
1811             assert(size <= 4);
1812             assert(num_immediates < LP_MAX_TGSI_IMMEDIATES);
1813             for( i = 0; i < size; ++i )
1814                bld.immediates[num_immediates][i] =
1815                   lp_build_const_vec(type, parse.FullToken.FullImmediate.u[i].Float);
1816             for( i = size; i < 4; ++i )
1817                bld.immediates[num_immediates][i] = bld.base.undef;
1818             num_immediates++;
1819          }
1820          break;
1821
1822       case TGSI_TOKEN_TYPE_PROPERTY:
1823          break;
1824
1825       default:
1826          assert( 0 );
1827       }
1828    }
1829    if (0) {
1830       LLVMBasicBlockRef block = LLVMGetInsertBlock(builder);
1831       LLVMValueRef function = LLVMGetBasicBlockParent(block);
1832       debug_printf("11111111111111111111111111111 \n");
1833       tgsi_dump(tokens, 0);
1834       LLVMDumpValue(function);
1835       debug_printf("2222222222222222222222222222 \n");
1836    }
1837    tgsi_parse_free( &parse );
1838 }
1839