src/mesa/state_tracker/st_program.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   *   Brian Paul
  31   */
  32
  33
  34 #include "main/imports.h"
  35 #include "main/hash.h"
  36 #include "main/mfeatures.h"
  37 #include "main/mtypes.h"
  38 #include "program/prog_parameter.h"
  39 #include "program/prog_print.h"
  40 #include "program/programopt.h"
  41
  42 #include "pipe/p_context.h"
  43 #include "pipe/p_defines.h"
  44 #include "pipe/p_shader_tokens.h"
  45 #include "draw/draw_context.h"
  46 #include "tgsi/tgsi_dump.h"
  47 #include "tgsi/tgsi_ureg.h"
  48
  49 #include "st_debug.h"
  50 #include "st_cb_bitmap.h"
  51 #include "st_cb_drawpixels.h"
  52 #include "st_context.h"
  53 #include "st_program.h"
  54 #include "st_mesa_to_tgsi.h"
  55 #include "cso_cache/cso_context.h"
  56
  57
  58
  59 /**
  60  * Delete a vertex program variant.  Note the caller must unlink
  61  * the variant from the linked list.
  62  */
  63 static void
  64 delete_vp_variant(struct st_context *st, struct st_vp_variant *vpv)
  65 {
  66    if (vpv->driver_shader)
  67       cso_delete_vertex_shader(st->cso_context, vpv->driver_shader);
  68
  69 #if FEATURE_feedback || FEATURE_rastpos
  70    if (vpv->draw_shader)
  71       draw_delete_vertex_shader( st->draw, vpv->draw_shader );
  72 #endif
  73
  74    if (vpv->tgsi.tokens)
  75       st_free_tokens(vpv->tgsi.tokens);
  76
  77    FREE( vpv );
  78 }
  79
  80
  81
  82 /**
  83  * Clean out any old compilations:
  84  */
  85 void
  86 st_release_vp_variants( struct st_context *st,
  87                         struct st_vertex_program *stvp )
  88 {
  89    struct st_vp_variant *vpv;
  90
  91    for (vpv = stvp->variants; vpv; ) {
  92       struct st_vp_variant *next = vpv->next;
  93       delete_vp_variant(st, vpv);
  94       vpv = next;
  95    }
  96
  97    stvp->variants = NULL;
  98 }
  99
 100
 101
 102 /**
 103  * Delete a fragment program variant.  Note the caller must unlink
 104  * the variant from the linked list.
 105  */
 106 static void
 107 delete_fp_variant(struct st_context *st, struct st_fp_variant *fpv)
 108 {
 109    if (fpv->driver_shader)
 110       cso_delete_fragment_shader(st->cso_context, fpv->driver_shader);
 111    if (fpv->parameters)
 112       _mesa_free_parameter_list(fpv->parameters);
 113
 114    FREE(fpv);
 115 }
 116
 117
 118 /**
 119  * Free all variants of a fragment program.
 120  */
 121 void
 122 st_release_fp_variants(struct st_context *st, struct st_fragment_program *stfp)
 123 {
 124    struct st_fp_variant *fpv;
 125
 126    for (fpv = stfp->variants; fpv; ) {
 127       struct st_fp_variant *next = fpv->next;
 128       delete_fp_variant(st, fpv);
 129       fpv = next;
 130    }
 131
 132    stfp->variants = NULL;
 133 }
 134
 135
 136 /**
 137  * Delete a geometry program variant.  Note the caller must unlink
 138  * the variant from the linked list.
 139  */
 140 static void
 141 delete_gp_variant(struct st_context *st, struct st_gp_variant *gpv)
 142 {
 143    if (gpv->driver_shader)
 144       cso_delete_geometry_shader(st->cso_context, gpv->driver_shader);
 145
 146    FREE(gpv);
 147 }
 148
 149
 150 /**
 151  * Free all variants of a geometry program.
 152  */
 153 void
 154 st_release_gp_variants(struct st_context *st, struct st_geometry_program *stgp)
 155 {
 156    struct st_gp_variant *gpv;
 157
 158    for (gpv = stgp->variants; gpv; ) {
 159       struct st_gp_variant *next = gpv->next;
 160       delete_gp_variant(st, gpv);
 161       gpv = next;
 162    }
 163
 164    stgp->variants = NULL;
 165 }
 166
 167
 168
 169
 170 /**
 171  * Translate a Mesa vertex shader into a TGSI shader.
 172  * \param outputMapping  to map vertex program output registers (VERT_RESULT_x)
 173  *       to TGSI output slots
 174  * \param tokensOut  destination for TGSI tokens
 175  * \return  pointer to cached pipe_shader object.
 176  */
 177 static void
 178 st_prepare_vertex_program(struct st_context *st,
 179                             struct st_vertex_program *stvp)
 180 {
 181    GLuint attr;
 182
 183    stvp->num_inputs = 0;
 184    stvp->num_outputs = 0;
 185
 186    if (stvp->Base.IsPositionInvariant)
 187       _mesa_insert_mvp_code(st->ctx, &stvp->Base);
 188
 189    assert(stvp->Base.Base.NumInstructions > 1);
 190
 191    /*
 192     * Determine number of inputs, the mappings between VERT_ATTRIB_x
 193     * and TGSI generic input indexes, plus input attrib semantic info.
 194     */
 195    for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
 196       if (stvp->Base.Base.InputsRead & (1 << attr)) {
 197          stvp->input_to_index[attr] = stvp->num_inputs;
 198          stvp->index_to_input[stvp->num_inputs] = attr;
 199          stvp->num_inputs++;
 200       }
 201    }
 202    /* bit of a hack, presetup potentially unused edgeflag input */
 203    stvp->input_to_index[VERT_ATTRIB_EDGEFLAG] = stvp->num_inputs;
 204    stvp->index_to_input[stvp->num_inputs] = VERT_ATTRIB_EDGEFLAG;
 205
 206    /* Compute mapping of vertex program outputs to slots.
 207     */
 208    for (attr = 0; attr < VERT_RESULT_MAX; attr++) {
 209       if ((stvp->Base.Base.OutputsWritten & BITFIELD64_BIT(attr)) == 0) {
 210          stvp->result_to_output[attr] = ~0;
 211       }
 212       else {
 213          unsigned slot = stvp->num_outputs++;
 214
 215          stvp->result_to_output[attr] = slot;
 216
 217          switch (attr) {
 218          case VERT_RESULT_HPOS:
 219             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
 220             stvp->output_semantic_index[slot] = 0;
 221             break;
 222          case VERT_RESULT_COL0:
 223             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 224             stvp->output_semantic_index[slot] = 0;
 225             break;
 226          case VERT_RESULT_COL1:
 227             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 228             stvp->output_semantic_index[slot] = 1;
 229             break;
 230          case VERT_RESULT_BFC0:
 231             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
 232             stvp->output_semantic_index[slot] = 0;
 233             break;
 234          case VERT_RESULT_BFC1:
 235             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
 236             stvp->output_semantic_index[slot] = 1;
 237             break;
 238          case VERT_RESULT_FOGC:
 239             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_FOG;
 240             stvp->output_semantic_index[slot] = 0;
 241             break;
 242          case VERT_RESULT_PSIZ:
 243             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;
 244             stvp->output_semantic_index[slot] = 0;
 245             break;
 246          case VERT_RESULT_EDGE:
 247             assert(0);
 248             break;
 249
 250          case VERT_RESULT_TEX0:
 251          case VERT_RESULT_TEX1:
 252          case VERT_RESULT_TEX2:
 253          case VERT_RESULT_TEX3:
 254          case VERT_RESULT_TEX4:
 255          case VERT_RESULT_TEX5:
 256          case VERT_RESULT_TEX6:
 257          case VERT_RESULT_TEX7:
 258             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 259             stvp->output_semantic_index[slot] = attr - VERT_RESULT_TEX0;
 260             break;
 261
 262          case VERT_RESULT_VAR0:
 263          default:
 264             assert(attr < VERT_RESULT_MAX);
 265             stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 266             stvp->output_semantic_index[slot] = (FRAG_ATTRIB_VAR0 -
 267                                                 FRAG_ATTRIB_TEX0 +
 268                                                 attr -
 269                                                 VERT_RESULT_VAR0);
 270             break;
 271          }
 272       }
 273    }
 274    /* similar hack to above, presetup potentially unused edgeflag output */
 275    stvp->result_to_output[VERT_RESULT_EDGE] = stvp->num_outputs;
 276    stvp->output_semantic_name[stvp->num_outputs] = TGSI_SEMANTIC_EDGEFLAG;
 277    stvp->output_semantic_index[stvp->num_outputs] = 0;
 278 }
 279
 280
 281 /**
 282  * Translate a vertex program to create a new variant.
 283  */
 284 static struct st_vp_variant *
 285 st_translate_vertex_program(struct st_context *st,
 286                             struct st_vertex_program *stvp,
 287                             const struct st_vp_variant_key *key)
 288 {
 289    struct st_vp_variant *vpv = CALLOC_STRUCT(st_vp_variant);
 290    struct pipe_context *pipe = st->pipe;
 291    struct ureg_program *ureg;
 292    enum pipe_error error;
 293    unsigned num_outputs;
 294
 295    st_prepare_vertex_program( st, stvp );
 296
 297    _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_OUTPUT);
 298    _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_VARYING);
 299
 300    ureg = ureg_create( TGSI_PROCESSOR_VERTEX );
 301    if (ureg == NULL) {
 302       FREE(vpv);
 303       return NULL;
 304    }
 305
 306    vpv->key = *key;
 307
 308    vpv->num_inputs = stvp->num_inputs;
 309    num_outputs = stvp->num_outputs;
 310    if (key->passthrough_edgeflags) {
 311       vpv->num_inputs++;
 312       num_outputs++;
 313    }
 314
 315    if (ST_DEBUG & DEBUG_MESA) {
 316       _mesa_print_program(&stvp->Base.Base);
 317       _mesa_print_program_parameters(st->ctx, &stvp->Base.Base);
 318       debug_printf("\n");
 319    }
 320
 321    error = st_translate_mesa_program(st->ctx,
 322                                      TGSI_PROCESSOR_VERTEX,
 323                                      ureg,
 324                                      &stvp->Base.Base,
 325                                      /* inputs */
 326                                      vpv->num_inputs,
 327                                      stvp->input_to_index,
 328                                      NULL, /* input semantic name */
 329                                      NULL, /* input semantic index */
 330                                      NULL,
 331                                      /* outputs */
 332                                      num_outputs,
 333                                      stvp->result_to_output,
 334                                      stvp->output_semantic_name,
 335                                      stvp->output_semantic_index,
 336                                      key->passthrough_edgeflags );
 337
 338    if (error)
 339       goto fail;
 340
 341    vpv->tgsi.tokens = ureg_get_tokens( ureg, NULL );
 342    if (!vpv->tgsi.tokens)
 343       goto fail;
 344
 345    ureg_destroy( ureg );
 346
 347    vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->tgsi);
 348
 349    if (ST_DEBUG & DEBUG_TGSI) {
 350       tgsi_dump( vpv->tgsi.tokens, 0 );
 351       debug_printf("\n");
 352    }
 353
 354    return vpv;
 355
 356 fail:
 357    debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__);
 358    _mesa_print_program(&stvp->Base.Base);
 359    debug_assert(0);
 360
 361    ureg_destroy( ureg );
 362    return NULL;
 363 }
 364
 365
 366 /**
 367  * Find/create a vertex program variant.
 368  */
 369 struct st_vp_variant *
 370 st_get_vp_variant(struct st_context *st,
 371                   struct st_vertex_program *stvp,
 372                   const struct st_vp_variant_key *key)
 373 {
 374    struct st_vp_variant *vpv;
 375
 376    /* Search for existing variant */
 377    for (vpv = stvp->variants; vpv; vpv = vpv->next) {
 378       if (memcmp(&vpv->key, key, sizeof(*key)) == 0) {
 379          break;
 380       }
 381    }
 382
 383    if (!vpv) {
 384       /* create now */
 385       vpv = st_translate_vertex_program(st, stvp, key);
 386       if (vpv) {
 387          /* insert into list */
 388          vpv->next = stvp->variants;
 389          stvp->variants = vpv;
 390       }
 391    }
 392
 393    return vpv;
 394 }
 395
 396
 397 /**
 398  * Translate a Mesa fragment shader into a TGSI shader using extra info in
 399  * the key.
 400  * \return  new fragment program variant
 401  */
 402 static struct st_fp_variant *
 403 st_translate_fragment_program(struct st_context *st,
 404                               struct st_fragment_program *stfp,
 405                               const struct st_fp_variant_key *key)
 406 {
 407    struct pipe_context *pipe = st->pipe;
 408    struct st_fp_variant *variant = CALLOC_STRUCT(st_fp_variant);
 409    GLboolean deleteFP = GL_FALSE;
 410
 411    if (!variant)
 412       return NULL;
 413
 414    assert(!(key->bitmap && key->drawpixels));
 415
 416 #if FEATURE_drawpix
 417    if (key->bitmap) {
 418       /* glBitmap drawing */
 419       struct gl_fragment_program *fp; /* we free this temp program below */
 420
 421       st_make_bitmap_fragment_program(st, &stfp->Base,
 422                                       &fp, &variant->bitmap_sampler);
 423
 424       variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);
 425       stfp = st_fragment_program(fp);
 426       deleteFP = GL_TRUE;
 427    }
 428    else if (key->drawpixels) {
 429       /* glDrawPixels drawing */
 430       struct gl_fragment_program *fp; /* we free this temp program below */
 431
 432       if (key->drawpixels_z || key->drawpixels_stencil) {
 433          fp = st_make_drawpix_z_stencil_program(st, key->drawpixels_z,
 434                                                 key->drawpixels_stencil);
 435       }
 436       else {
 437          /* RGBA */
 438          st_make_drawpix_fragment_program(st, &stfp->Base, &fp);
 439          variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);
 440          deleteFP = GL_TRUE;
 441       }
 442       stfp = st_fragment_program(fp);
 443    }
 444 #endif
 445
 446    if (!stfp->tgsi.tokens) {
 447       /* need to translate Mesa instructions to TGSI now */
 448       GLuint outputMapping[FRAG_RESULT_MAX];
 449       GLuint inputMapping[FRAG_ATTRIB_MAX];
 450       GLuint interpMode[PIPE_MAX_SHADER_INPUTS];  /* XXX size? */
 451       GLuint attr;
 452       enum pipe_error error;
 453       const GLbitfield inputsRead = stfp->Base.Base.InputsRead;
 454       struct ureg_program *ureg;
 455       GLboolean write_all = GL_FALSE;
 456
 457       ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
 458       ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
 459       uint fs_num_inputs = 0;
 460
 461       ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];
 462       ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
 463       uint fs_num_outputs = 0;
 464
 465
 466       _mesa_remove_output_reads(&stfp->Base.Base, PROGRAM_OUTPUT);
 467
 468       /*
 469        * Convert Mesa program inputs to TGSI input register semantics.
 470        */
 471       for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {
 472          if (inputsRead & (1 << attr)) {
 473             const GLuint slot = fs_num_inputs++;
 474
 475             inputMapping[attr] = slot;
 476
 477             switch (attr) {
 478             case FRAG_ATTRIB_WPOS:
 479                input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
 480                input_semantic_index[slot] = 0;
 481                interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
 482                break;
 483             case FRAG_ATTRIB_COL0:
 484                input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 485                input_semantic_index[slot] = 0;
 486                interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
 487                break;
 488             case FRAG_ATTRIB_COL1:
 489                input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 490                input_semantic_index[slot] = 1;
 491                interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
 492                break;
 493             case FRAG_ATTRIB_FOGC:
 494                input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
 495                input_semantic_index[slot] = 0;
 496                interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
 497                break;
 498             case FRAG_ATTRIB_FACE:
 499                input_semantic_name[slot] = TGSI_SEMANTIC_FACE;
 500                input_semantic_index[slot] = 0;
 501                interpMode[slot] = TGSI_INTERPOLATE_CONSTANT;
 502                break;
 503                /* In most cases, there is nothing special about these
 504                 * inputs, so adopt a convention to use the generic
 505                 * semantic name and the mesa FRAG_ATTRIB_ number as the
 506                 * index.
 507                 *
 508                 * All that is required is that the vertex shader labels
 509                 * its own outputs similarly, and that the vertex shader
 510                 * generates at least every output required by the
 511                 * fragment shader plus fixed-function hardware (such as
 512                 * BFC).
 513                 *
 514                 * There is no requirement that semantic indexes start at
 515                 * zero or be restricted to a particular range -- nobody
 516                 * should be building tables based on semantic index.
 517                 */
 518             case FRAG_ATTRIB_PNTC:
 519             case FRAG_ATTRIB_TEX0:
 520             case FRAG_ATTRIB_TEX1:
 521             case FRAG_ATTRIB_TEX2:
 522             case FRAG_ATTRIB_TEX3:
 523             case FRAG_ATTRIB_TEX4:
 524             case FRAG_ATTRIB_TEX5:
 525             case FRAG_ATTRIB_TEX6:
 526             case FRAG_ATTRIB_TEX7:
 527             case FRAG_ATTRIB_VAR0:
 528             default:
 529                /* Actually, let's try and zero-base this just for
 530                 * readability of the generated TGSI.
 531                 */
 532                assert(attr >= FRAG_ATTRIB_TEX0);
 533                input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0);
 534                input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 535                if (attr == FRAG_ATTRIB_PNTC)
 536                   interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
 537                else
 538                   interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
 539                break;
 540             }
 541          }
 542          else {
 543             inputMapping[attr] = -1;
 544          }
 545       }
 546
 547       /*
 548        * Semantics and mapping for outputs
 549        */
 550       {
 551          uint numColors = 0;
 552          GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten;
 553
 554          /* if z is written, emit that first */
 555          if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {
 556             fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION;
 557             fs_output_semantic_index[fs_num_outputs] = 0;
 558             outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs;
 559             fs_num_outputs++;
 560             outputsWritten &= ~(1 << FRAG_RESULT_DEPTH);
 561          }
 562
 563          if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) {
 564             fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_STENCIL;
 565             fs_output_semantic_index[fs_num_outputs] = 0;
 566             outputMapping[FRAG_RESULT_STENCIL] = fs_num_outputs;
 567             fs_num_outputs++;
 568             outputsWritten &= ~(1 << FRAG_RESULT_STENCIL);
 569          }
 570
 571          /* handle remaning outputs (color) */
 572          for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {
 573             if (outputsWritten & BITFIELD64_BIT(attr)) {
 574                switch (attr) {
 575                case FRAG_RESULT_DEPTH:
 576                case FRAG_RESULT_STENCIL:
 577                   /* handled above */
 578                   assert(0);
 579                   break;
 580                case FRAG_RESULT_COLOR:
 581                   write_all = GL_TRUE; /* fallthrough */
 582                default:
 583                   assert(attr == FRAG_RESULT_COLOR ||
 584                          (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX));
 585                   fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_COLOR;
 586                   fs_output_semantic_index[fs_num_outputs] = numColors;
 587                   outputMapping[attr] = fs_num_outputs;
 588                   numColors++;
 589                   break;
 590                }
 591
 592                fs_num_outputs++;
 593             }
 594          }
 595       }
 596
 597       ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );
 598       if (ureg == NULL)
 599          return NULL;
 600
 601       if (ST_DEBUG & DEBUG_MESA) {
 602          _mesa_print_program(&stfp->Base.Base);
 603          _mesa_print_program_parameters(st->ctx, &stfp->Base.Base);
 604          debug_printf("\n");
 605       }
 606       if (write_all == GL_TRUE)
 607          ureg_property_fs_color0_writes_all_cbufs(ureg, 1);
 608
 609       error = st_translate_mesa_program(st->ctx,
 610                                         TGSI_PROCESSOR_FRAGMENT,
 611                                         ureg,
 612                                         &stfp->Base.Base,
 613                                         /* inputs */
 614                                         fs_num_inputs,
 615                                         inputMapping,
 616                                         input_semantic_name,
 617                                         input_semantic_index,
 618                                         interpMode,
 619                                         /* outputs */
 620                                         fs_num_outputs,
 621                                         outputMapping,
 622                                         fs_output_semantic_name,
 623                                         fs_output_semantic_index, FALSE );
 624
 625       stfp->tgsi.tokens = ureg_get_tokens( ureg, NULL );
 626       ureg_destroy( ureg );
 627    }
 628
 629    /* fill in variant */
 630    variant->driver_shader = pipe->create_fs_state(pipe, &stfp->tgsi);
 631    variant->key = *key;
 632
 633    if (ST_DEBUG & DEBUG_TGSI) {
 634       tgsi_dump( stfp->tgsi.tokens, 0/*TGSI_DUMP_VERBOSE*/ );
 635       debug_printf("\n");
 636    }
 637
 638    if (deleteFP) {
 639       /* Free the temporary program made above */
 640       struct gl_fragment_program *fp = &stfp->Base;
 641       _mesa_reference_fragprog(st->ctx, &fp, NULL);
 642    }
 643
 644    return variant;
 645 }
 646
 647
 648 /**
 649  * Translate fragment program if needed.
 650  */
 651 struct st_fp_variant *
 652 st_get_fp_variant(struct st_context *st,
 653                   struct st_fragment_program *stfp,
 654                   const struct st_fp_variant_key *key)
 655 {
 656    struct st_fp_variant *fpv;
 657
 658    /* Search for existing variant */
 659    for (fpv = stfp->variants; fpv; fpv = fpv->next) {
 660       if (memcmp(&fpv->key, key, sizeof(*key)) == 0) {
 661          break;
 662       }
 663    }
 664
 665    if (!fpv) {
 666       /* create new */
 667       fpv = st_translate_fragment_program(st, stfp, key);
 668       if (fpv) {
 669          /* insert into list */
 670          fpv->next = stfp->variants;
 671          stfp->variants = fpv;
 672       }
 673    }
 674
 675    return fpv;
 676 }
 677
 678
 679 /**
 680  * Translate a geometry program to create a new variant.
 681  */
 682 static struct st_gp_variant *
 683 st_translate_geometry_program(struct st_context *st,
 684                               struct st_geometry_program *stgp,
 685                               const struct st_gp_variant_key *key)
 686 {
 687    GLuint inputMapping[GEOM_ATTRIB_MAX];
 688    GLuint outputMapping[GEOM_RESULT_MAX];
 689    struct pipe_context *pipe = st->pipe;
 690    enum pipe_error error;
 691    GLuint attr;
 692    const GLbitfield inputsRead = stgp->Base.Base.InputsRead;
 693    GLuint vslot = 0;
 694    GLuint num_generic = 0;
 695
 696    uint gs_num_inputs = 0;
 697    uint gs_builtin_inputs = 0;
 698    uint gs_array_offset = 0;
 699
 700    ubyte gs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];
 701    ubyte gs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
 702    uint gs_num_outputs = 0;
 703
 704    GLint i;
 705    GLuint maxSlot = 0;
 706    struct ureg_program *ureg;
 707
 708    struct st_gp_variant *gpv;
 709
 710    gpv = CALLOC_STRUCT(st_gp_variant);
 711    if (!gpv)
 712       return NULL;
 713
 714    _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_OUTPUT);
 715    _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_VARYING);
 716
 717    ureg = ureg_create( TGSI_PROCESSOR_GEOMETRY );
 718    if (ureg == NULL) {
 719       FREE(gpv);
 720       return NULL;
 721    }
 722
 723    /* which vertex output goes to the first geometry input */
 724    vslot = 0;
 725
 726    memset(inputMapping, 0, sizeof(inputMapping));
 727    memset(outputMapping, 0, sizeof(outputMapping));
 728
 729    /*
 730     * Convert Mesa program inputs to TGSI input register semantics.
 731     */
 732    for (attr = 0; attr < GEOM_ATTRIB_MAX; attr++) {
 733       if (inputsRead & (1 << attr)) {
 734          const GLuint slot = gs_num_inputs;
 735
 736          gs_num_inputs++;
 737
 738          inputMapping[attr] = slot;
 739
 740          stgp->input_map[slot + gs_array_offset] = vslot - gs_builtin_inputs;
 741          stgp->input_to_index[attr] = vslot;
 742          stgp->index_to_input[vslot] = attr;
 743          ++vslot;
 744
 745          if (attr != GEOM_ATTRIB_PRIMITIVE_ID) {
 746             gs_array_offset += 2;
 747          } else
 748             ++gs_builtin_inputs;
 749
 750 #if 0
 751          debug_printf("input map at %d = %d\n",
 752                       slot + gs_array_offset, stgp->input_map[slot + gs_array_offset]);
 753 #endif
 754
 755          switch (attr) {
 756          case GEOM_ATTRIB_PRIMITIVE_ID:
 757             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_PRIMID;
 758             stgp->input_semantic_index[slot] = 0;
 759             break;
 760          case GEOM_ATTRIB_POSITION:
 761             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
 762             stgp->input_semantic_index[slot] = 0;
 763             break;
 764          case GEOM_ATTRIB_COLOR0:
 765             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 766             stgp->input_semantic_index[slot] = 0;
 767             break;
 768          case GEOM_ATTRIB_COLOR1:
 769             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 770             stgp->input_semantic_index[slot] = 1;
 771             break;
 772          case GEOM_ATTRIB_FOG_FRAG_COORD:
 773             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
 774             stgp->input_semantic_index[slot] = 0;
 775             break;
 776          case GEOM_ATTRIB_TEX_COORD:
 777             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 778             stgp->input_semantic_index[slot] = num_generic++;
 779             break;
 780          case GEOM_ATTRIB_VAR0:
 781             /* fall-through */
 782          default:
 783             stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 784             stgp->input_semantic_index[slot] = num_generic++;
 785          }
 786       }
 787    }
 788
 789    /* initialize output semantics to defaults */
 790    for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) {
 791       gs_output_semantic_name[i] = TGSI_SEMANTIC_GENERIC;
 792       gs_output_semantic_index[i] = 0;
 793    }
 794
 795    num_generic = 0;
 796    /*
 797     * Determine number of outputs, the (default) output register
 798     * mapping and the semantic information for each output.
 799     */
 800    for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {
 801       if (stgp->Base.Base.OutputsWritten & BITFIELD64_BIT(attr)) {
 802          GLuint slot;
 803
 804          slot = gs_num_outputs;
 805          gs_num_outputs++;
 806          outputMapping[attr] = slot;
 807
 808          switch (attr) {
 809          case GEOM_RESULT_POS:
 810             assert(slot == 0);
 811             gs_output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
 812             gs_output_semantic_index[slot] = 0;
 813             break;
 814          case GEOM_RESULT_COL0:
 815             gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 816             gs_output_semantic_index[slot] = 0;
 817             break;
 818          case GEOM_RESULT_COL1:
 819             gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
 820             gs_output_semantic_index[slot] = 1;
 821             break;
 822          case GEOM_RESULT_SCOL0:
 823             gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
 824             gs_output_semantic_index[slot] = 0;
 825             break;
 826          case GEOM_RESULT_SCOL1:
 827             gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
 828             gs_output_semantic_index[slot] = 1;
 829             break;
 830          case GEOM_RESULT_FOGC:
 831             gs_output_semantic_name[slot] = TGSI_SEMANTIC_FOG;
 832             gs_output_semantic_index[slot] = 0;
 833             break;
 834          case GEOM_RESULT_PSIZ:
 835             gs_output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;
 836             gs_output_semantic_index[slot] = 0;
 837             break;
 838          case GEOM_RESULT_TEX0:
 839          case GEOM_RESULT_TEX1:
 840          case GEOM_RESULT_TEX2:
 841          case GEOM_RESULT_TEX3:
 842          case GEOM_RESULT_TEX4:
 843          case GEOM_RESULT_TEX5:
 844          case GEOM_RESULT_TEX6:
 845          case GEOM_RESULT_TEX7:
 846             /* fall-through */
 847          case GEOM_RESULT_VAR0:
 848             /* fall-through */
 849          default:
 850             assert(slot < Elements(gs_output_semantic_name));
 851             /* use default semantic info */
 852             gs_output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
 853             gs_output_semantic_index[slot] = num_generic++;
 854          }
 855       }
 856    }
 857
 858    assert(gs_output_semantic_name[0] == TGSI_SEMANTIC_POSITION);
 859
 860    /* find max output slot referenced to compute gs_num_outputs */
 861    for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {
 862       if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)
 863          maxSlot = outputMapping[attr];
 864    }
 865    gs_num_outputs = maxSlot + 1;
 866
 867 #if 0 /* debug */
 868    {
 869       GLuint i;
 870       printf("outputMapping? %d\n", outputMapping ? 1 : 0);
 871       if (outputMapping) {
 872          printf("attr -> slot\n");
 873          for (i = 0; i < 16;  i++) {
 874             printf(" %2d       %3d\n", i, outputMapping[i]);
 875          }
 876       }
 877       printf("slot    sem_name  sem_index\n");
 878       for (i = 0; i < gs_num_outputs; i++) {
 879          printf(" %2d         %d         %d\n",
 880                 i,
 881                 gs_output_semantic_name[i],
 882                 gs_output_semantic_index[i]);
 883       }
 884    }
 885 #endif
 886
 887    /* free old shader state, if any */
 888    if (stgp->tgsi.tokens) {
 889       st_free_tokens(stgp->tgsi.tokens);
 890       stgp->tgsi.tokens = NULL;
 891    }
 892
 893    ureg_property_gs_input_prim(ureg, stgp->Base.InputType);
 894    ureg_property_gs_output_prim(ureg, stgp->Base.OutputType);
 895    ureg_property_gs_max_vertices(ureg, stgp->Base.VerticesOut);
 896
 897    error = st_translate_mesa_program(st->ctx,
 898                                      TGSI_PROCESSOR_GEOMETRY,
 899                                      ureg,
 900                                      &stgp->Base.Base,
 901                                      /* inputs */
 902                                      gs_num_inputs,
 903                                      inputMapping,
 904                                      stgp->input_semantic_name,
 905                                      stgp->input_semantic_index,
 906                                      NULL,
 907                                      /* outputs */
 908                                      gs_num_outputs,
 909                                      outputMapping,
 910                                      gs_output_semantic_name,
 911                                      gs_output_semantic_index,
 912                                      FALSE);
 913
 914    stgp->num_inputs = gs_num_inputs;
 915    stgp->tgsi.tokens = ureg_get_tokens( ureg, NULL );
 916    ureg_destroy( ureg );
 917
 918    /* fill in new variant */
 919    gpv->driver_shader = pipe->create_gs_state(pipe, &stgp->tgsi);
 920    gpv->key = *key;
 921
 922    if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) {
 923       _mesa_print_program(&stgp->Base.Base);
 924       debug_printf("\n");
 925    }
 926
 927    if (ST_DEBUG & DEBUG_TGSI) {
 928       tgsi_dump(stgp->tgsi.tokens, 0);
 929       debug_printf("\n");
 930    }
 931
 932    return gpv;
 933 }
 934
 935
 936 /**
 937  * Get/create geometry program variant.
 938  */
 939 struct st_gp_variant *
 940 st_get_gp_variant(struct st_context *st,
 941                   struct st_geometry_program *stgp,
 942                   const struct st_gp_variant_key *key)
 943 {
 944    struct st_gp_variant *gpv;
 945
 946    /* Search for existing variant */
 947    for (gpv = stgp->variants; gpv; gpv = gpv->next) {
 948       if (memcmp(&gpv->key, key, sizeof(*key)) == 0) {
 949          break;
 950       }
 951    }
 952
 953    if (!gpv) {
 954       /* create new */
 955       gpv = st_translate_geometry_program(st, stgp, key);
 956       if (gpv) {
 957          /* insert into list */
 958          gpv->next = stgp->variants;
 959          stgp->variants = gpv;
 960       }
 961    }
 962
 963    return gpv;
 964 }
 965
 966
 967
 968
 969 /**
 970  * Debug- print current shader text
 971  */
 972 void
 973 st_print_shaders(struct gl_context *ctx)
 974 {
 975    struct gl_shader_program *shProg[3] = {
 976       ctx->Shader.CurrentVertexProgram,
 977       ctx->Shader.CurrentGeometryProgram,
 978       ctx->Shader.CurrentFragmentProgram,
 979    };
 980    unsigned j;
 981
 982    for (j = 0; j < 3; j++) {
 983       unsigned i;
 984
 985       if (shProg[j] == NULL)
 986          continue;
 987
 988       for (i = 0; i < shProg[j]->NumShaders; i++) {
 989          struct gl_shader *sh;
 990
 991          switch (shProg[j]->Shaders[i]->Type) {
 992          case GL_VERTEX_SHADER:
 993             sh = (i != 0) ? NULL : shProg[j]->Shaders[i];
 994             break;
 995          case GL_GEOMETRY_SHADER_ARB:
 996             sh = (i != 1) ? NULL : shProg[j]->Shaders[i];
 997             break;
 998          case GL_FRAGMENT_SHADER:
 999             sh = (i != 2) ? NULL : shProg[j]->Shaders[i];
1000             break;
1001          default:
1002             assert(0);
1003             sh = NULL;
1004             break;
1005          }
1006
1007          if (sh != NULL) {
1008             printf("GLSL shader %u of %u:\n", i, shProg[j]->NumShaders);
1009             printf("%s\n", sh->Source);
1010          }
1011       }
1012    }
1013 }
1014
1015
1016 /**
1017  * Vert/Geom/Frag programs have per-context variants.  Free all the
1018  * variants attached to the given program which match the given context.
1019  */
1020 static void
1021 destroy_program_variants(struct st_context *st, struct gl_program *program)
1022 {
1023    if (!program)
1024       return;
1025
1026    switch (program->Target) {
1027    case GL_VERTEX_PROGRAM_ARB:
1028       {
1029          struct st_vertex_program *stvp = (struct st_vertex_program *) program;
1030          struct st_vp_variant *vpv, **prevPtr = &stvp->variants;
1031
1032          for (vpv = stvp->variants; vpv; ) {
1033             struct st_vp_variant *next = vpv->next;
1034             if (vpv->key.st == st) {
1035                /* unlink from list */
1036                *prevPtr = next;
1037                /* destroy this variant */
1038                delete_vp_variant(st, vpv);
1039             }
1040             else {
1041                prevPtr = &vpv->next;
1042             }
1043             vpv = next;
1044          }
1045       }
1046       break;
1047    case GL_FRAGMENT_PROGRAM_ARB:
1048       {
1049          struct st_fragment_program *stfp =
1050             (struct st_fragment_program *) program;
1051          struct st_fp_variant *fpv, **prevPtr = &stfp->variants;
1052
1053          for (fpv = stfp->variants; fpv; ) {
1054             struct st_fp_variant *next = fpv->next;
1055             if (fpv->key.st == st) {
1056                /* unlink from list */
1057                *prevPtr = next;
1058                /* destroy this variant */
1059                delete_fp_variant(st, fpv);
1060             }
1061             else {
1062                prevPtr = &fpv->next;
1063             }
1064             fpv = next;
1065          }
1066       }
1067       break;
1068    case MESA_GEOMETRY_PROGRAM:
1069       {
1070          struct st_geometry_program *stgp =
1071             (struct st_geometry_program *) program;
1072          struct st_gp_variant *gpv, **prevPtr = &stgp->variants;
1073
1074          for (gpv = stgp->variants; gpv; ) {
1075             struct st_gp_variant *next = gpv->next;
1076             if (gpv->key.st == st) {
1077                /* unlink from list */
1078                *prevPtr = next;
1079                /* destroy this variant */
1080                delete_gp_variant(st, gpv);
1081             }
1082             else {
1083                prevPtr = &gpv->next;
1084             }
1085             gpv = next;
1086          }
1087       }
1088       break;
1089    default:
1090       _mesa_problem(NULL, "Unexpected program target 0x%x in "
1091                     "destroy_program_variants_cb()", program->Target);
1092    }
1093 }
1094
1095
1096 /**
1097  * Callback for _mesa_HashWalk.  Free all the shader's program variants
1098  * which match the given context.
1099  */
1100 static void
1101 destroy_shader_program_variants_cb(GLuint key, void *data, void *userData)
1102 {
1103    struct st_context *st = (struct st_context *) userData;
1104    struct gl_shader *shader = (struct gl_shader *) data;
1105
1106    switch (shader->Type) {
1107    case GL_SHADER_PROGRAM_MESA:
1108       {
1109          struct gl_shader_program *shProg = (struct gl_shader_program *) data;
1110          GLuint i;
1111
1112          for (i = 0; i < shProg->NumShaders; i++) {
1113             destroy_program_variants(st, shProg->Shaders[i]->Program);
1114          }
1115
1116          destroy_program_variants(st, (struct gl_program *)
1117                                   shProg->VertexProgram);
1118          destroy_program_variants(st, (struct gl_program *)
1119                                   shProg->FragmentProgram);
1120          destroy_program_variants(st, (struct gl_program *)
1121                                   shProg->GeometryProgram);
1122       }
1123       break;
1124    case GL_VERTEX_SHADER:
1125    case GL_FRAGMENT_SHADER:
1126    case GL_GEOMETRY_SHADER:
1127       {
1128          destroy_program_variants(st, shader->Program);
1129       }
1130       break;
1131    default:
1132       assert(0);
1133    }
1134 }
1135
1136
1137 /**
1138  * Callback for _mesa_HashWalk.  Free all the program variants which match
1139  * the given context.
1140  */
1141 static void
1142 destroy_program_variants_cb(GLuint key, void *data, void *userData)
1143 {
1144    struct st_context *st = (struct st_context *) userData;
1145    struct gl_program *program = (struct gl_program *) data;
1146    destroy_program_variants(st, program);
1147 }
1148
1149
1150 /**
1151  * Walk over all shaders and programs to delete any variants which
1152  * belong to the given context.
1153  * This is called during context tear-down.
1154  */
1155 void
1156 st_destroy_program_variants(struct st_context *st)
1157 {
1158    /* ARB vert/frag program */
1159    _mesa_HashWalk(st->ctx->Shared->Programs,
1160                   destroy_program_variants_cb, st);
1161
1162    /* GLSL vert/frag/geom shaders */
1163    _mesa_HashWalk(st->ctx->Shared->ShaderObjects,
1164                   destroy_shader_program_variants_cb, st);
1165 }