src/mesa/drivers/dri/i965/brw_program.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keithw@vmware.com>
  30   */
  31
  32 #include <pthread.h>
  33 #include "main/imports.h"
  34 #include "main/enums.h"
  35 #include "main/shaderobj.h"
  36 #include "program/prog_parameter.h"
  37 #include "program/prog_print.h"
  38 #include "program/program.h"
  39 #include "program/programopt.h"
  40 #include "tnl/tnl.h"
  41 #include "util/ralloc.h"
  42 #include "glsl/ir.h"
  43
  44 #include "brw_context.h"
  45 #include "brw_shader.h"
  46 #include "brw_nir.h"
  47 #include "brw_wm.h"
  48 #include "intel_batchbuffer.h"
  49
  50 static unsigned
  51 get_new_program_id(struct intel_screen *screen)
  52 {
  53    static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  54    pthread_mutex_lock(&m);
  55    unsigned id = screen->program_id++;
  56    pthread_mutex_unlock(&m);
  57    return id;
  58 }
  59
  60 static struct gl_program *brwNewProgram( struct gl_context *ctx,
  61                                       GLenum target,
  62                                       GLuint id )
  63 {
  64    struct brw_context *brw = brw_context(ctx);
  65
  66    switch (target) {
  67    case GL_VERTEX_PROGRAM_ARB: {
  68       struct brw_vertex_program *prog = CALLOC_STRUCT(brw_vertex_program);
  69       if (prog) {
  70          prog->id = get_new_program_id(brw->intelScreen);
  71
  72          return _mesa_init_vertex_program( ctx, &prog->program,
  73                                              target, id );
  74       }
  75       else
  76          return NULL;
  77    }
  78
  79    case GL_FRAGMENT_PROGRAM_ARB: {
  80       struct brw_fragment_program *prog = CALLOC_STRUCT(brw_fragment_program);
  81       if (prog) {
  82          prog->id = get_new_program_id(brw->intelScreen);
  83
  84          return _mesa_init_fragment_program( ctx, &prog->program,
  85                                              target, id );
  86       }
  87       else
  88          return NULL;
  89    }
  90
  91    case MESA_GEOMETRY_PROGRAM: {
  92       struct brw_geometry_program *prog = CALLOC_STRUCT(brw_geometry_program);
  93       if (prog) {
  94          prog->id = get_new_program_id(brw->intelScreen);
  95
  96          return _mesa_init_geometry_program(ctx, &prog->program, target, id);
  97       } else {
  98          return NULL;
  99       }
 100    }
 101
 102    case GL_COMPUTE_PROGRAM_NV: {
 103       struct brw_compute_program *prog = CALLOC_STRUCT(brw_compute_program);
 104       if (prog) {
 105          prog->id = get_new_program_id(brw->intelScreen);
 106
 107          return _mesa_init_compute_program(ctx, &prog->program, target, id);
 108       } else {
 109          return NULL;
 110       }
 111    }
 112
 113    default:
 114       unreachable("Unsupported target in brwNewProgram()");
 115    }
 116 }
 117
 118 static void brwDeleteProgram( struct gl_context *ctx,
 119                               struct gl_program *prog )
 120 {
 121    _mesa_delete_program( ctx, prog );
 122 }
 123
 124
 125 static GLboolean
 126 brwProgramStringNotify(struct gl_context *ctx,
 127                        GLenum target,
 128                        struct gl_program *prog)
 129 {
 130    struct brw_context *brw = brw_context(ctx);
 131
 132    switch (target) {
 133    case GL_FRAGMENT_PROGRAM_ARB: {
 134       struct gl_fragment_program *fprog = (struct gl_fragment_program *) prog;
 135       struct brw_fragment_program *newFP = brw_fragment_program(fprog);
 136       const struct brw_fragment_program *curFP =
 137          brw_fragment_program_const(brw->fragment_program);
 138
 139       if (newFP == curFP)
 140          brw->ctx.NewDriverState |= BRW_NEW_FRAGMENT_PROGRAM;
 141       newFP->id = get_new_program_id(brw->intelScreen);
 142
 143       brw_add_texrect_params(prog);
 144
 145       if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_FRAGMENT].NirOptions) {
 146          prog->nir = brw_create_nir(brw, NULL, prog, MESA_SHADER_FRAGMENT);
 147       }
 148
 149       brw_fs_precompile(ctx, NULL, prog);
 150       break;
 151    }
 152    case GL_VERTEX_PROGRAM_ARB: {
 153       struct gl_vertex_program *vprog = (struct gl_vertex_program *) prog;
 154       struct brw_vertex_program *newVP = brw_vertex_program(vprog);
 155       const struct brw_vertex_program *curVP =
 156          brw_vertex_program_const(brw->vertex_program);
 157
 158       if (newVP == curVP)
 159          brw->ctx.NewDriverState |= BRW_NEW_VERTEX_PROGRAM;
 160       if (newVP->program.IsPositionInvariant) {
 161          _mesa_insert_mvp_code(ctx, &newVP->program);
 162       }
 163       newVP->id = get_new_program_id(brw->intelScreen);
 164
 165       /* Also tell tnl about it:
 166        */
 167       _tnl_program_string(ctx, target, prog);
 168
 169       brw_add_texrect_params(prog);
 170
 171       if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].NirOptions) {
 172          prog->nir = brw_create_nir(brw, NULL, prog, MESA_SHADER_VERTEX);
 173       }
 174
 175       brw_vs_precompile(ctx, NULL, prog);
 176       break;
 177    }
 178    default:
 179       /*
 180        * driver->ProgramStringNotify is only called for ARB programs, fixed
 181        * function vertex programs, and ir_to_mesa (which isn't used by the
 182        * i965 back-end).  Therefore, even after geometry shaders are added,
 183        * this function should only ever be called with a target of
 184        * GL_VERTEX_PROGRAM_ARB or GL_FRAGMENT_PROGRAM_ARB.
 185        */
 186       unreachable("Unexpected target in brwProgramStringNotify");
 187    }
 188
 189    return true;
 190 }
 191
 192 static void
 193 brw_memory_barrier(struct gl_context *ctx, GLbitfield barriers)
 194 {
 195    struct brw_context *brw = brw_context(ctx);
 196    unsigned bits = (PIPE_CONTROL_DATA_CACHE_INVALIDATE |
 197                     PIPE_CONTROL_NO_WRITE |
 198                     PIPE_CONTROL_CS_STALL);
 199    assert(brw->gen >= 7 && brw->gen <= 8);
 200
 201    if (barriers & (GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT |
 202                    GL_ELEMENT_ARRAY_BARRIER_BIT |
 203                    GL_COMMAND_BARRIER_BIT))
 204       bits |= PIPE_CONTROL_VF_CACHE_INVALIDATE;
 205
 206    if (barriers & GL_UNIFORM_BARRIER_BIT)
 207       bits |= (PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE |
 208                PIPE_CONTROL_CONST_CACHE_INVALIDATE);
 209
 210    if (barriers & GL_TEXTURE_FETCH_BARRIER_BIT)
 211       bits |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE;
 212
 213    if (barriers & GL_TEXTURE_UPDATE_BARRIER_BIT)
 214       bits |= PIPE_CONTROL_RENDER_TARGET_FLUSH;
 215
 216    if (barriers & GL_FRAMEBUFFER_BARRIER_BIT)
 217       bits |= (PIPE_CONTROL_DEPTH_CACHE_FLUSH |
 218                PIPE_CONTROL_RENDER_TARGET_FLUSH);
 219
 220    /* Typed surface messages are handled by the render cache on IVB, so we
 221     * need to flush it too.
 222     */
 223    if (brw->gen == 7 && !brw->is_haswell)
 224       bits |= PIPE_CONTROL_RENDER_TARGET_FLUSH;
 225
 226    brw_emit_pipe_control_flush(brw, bits);
 227 }
 228
 229 void
 230 brw_add_texrect_params(struct gl_program *prog)
 231 {
 232    for (int texunit = 0; texunit < BRW_MAX_TEX_UNIT; texunit++) {
 233       if (!(prog->TexturesUsed[texunit] & (1 << TEXTURE_RECT_INDEX)))
 234          continue;
 235
 236       int tokens[STATE_LENGTH] = {
 237          STATE_INTERNAL,
 238          STATE_TEXRECT_SCALE,
 239          texunit,
 240          0,
 241          0
 242       };
 243
 244       _mesa_add_state_reference(prog->Parameters, (gl_state_index *)tokens);
 245    }
 246 }
 247
 248 /* Per-thread scratch space is a power-of-two multiple of 1KB. */
 249 int
 250 brw_get_scratch_size(int size)
 251 {
 252    int i;
 253
 254    for (i = 1024; i < size; i *= 2)
 255       ;
 256
 257    return i;
 258 }
 259
 260 void
 261 brw_get_scratch_bo(struct brw_context *brw,
 262                    drm_intel_bo **scratch_bo, int size)
 263 {
 264    drm_intel_bo *old_bo = *scratch_bo;
 265
 266    if (old_bo && old_bo->size < size) {
 267       drm_intel_bo_unreference(old_bo);
 268       old_bo = NULL;
 269    }
 270
 271    if (!old_bo) {
 272       *scratch_bo = drm_intel_bo_alloc(brw->bufmgr, "scratch bo", size, 4096);
 273    }
 274 }
 275
 276 void brwInitFragProgFuncs( struct dd_function_table *functions )
 277 {
 278    /* assert(functions->ProgramStringNotify == _tnl_program_string); */
 279
 280    functions->NewProgram = brwNewProgram;
 281    functions->DeleteProgram = brwDeleteProgram;
 282    functions->ProgramStringNotify = brwProgramStringNotify;
 283
 284    functions->NewShader = brw_new_shader;
 285    functions->LinkShader = brw_link_shader;
 286
 287    functions->MemoryBarrier = brw_memory_barrier;
 288 }
 289
 290 void
 291 brw_init_shader_time(struct brw_context *brw)
 292 {
 293    const int max_entries = 4096;
 294    brw->shader_time.bo = drm_intel_bo_alloc(brw->bufmgr, "shader time",
 295                                             max_entries * SHADER_TIME_STRIDE,
 296                                             4096);
 297    brw->shader_time.names = rzalloc_array(brw, const char *, max_entries);
 298    brw->shader_time.ids = rzalloc_array(brw, int, max_entries);
 299    brw->shader_time.types = rzalloc_array(brw, enum shader_time_shader_type,
 300                                           max_entries);
 301    brw->shader_time.cumulative = rzalloc_array(brw, uint64_t,
 302                                                max_entries);
 303    brw->shader_time.max_entries = max_entries;
 304 }
 305
 306 static int
 307 compare_time(const void *a, const void *b)
 308 {
 309    uint64_t * const *a_val = a;
 310    uint64_t * const *b_val = b;
 311
 312    /* We don't just subtract because we're turning the value to an int. */
 313    if (**a_val < **b_val)
 314       return -1;
 315    else if (**a_val == **b_val)
 316       return 0;
 317    else
 318       return 1;
 319 }
 320
 321 static void
 322 get_written_and_reset(struct brw_context *brw, int i,
 323                       uint64_t *written, uint64_t *reset)
 324 {
 325    enum shader_time_shader_type type = brw->shader_time.types[i];
 326    assert(type == ST_VS || type == ST_GS || type == ST_FS8 ||
 327           type == ST_FS16 || type == ST_CS);
 328
 329    /* Find where we recorded written and reset. */
 330    int wi, ri;
 331
 332    for (wi = i; brw->shader_time.types[wi] != type + 1; wi++)
 333       ;
 334
 335    for (ri = i; brw->shader_time.types[ri] != type + 2; ri++)
 336       ;
 337
 338    *written = brw->shader_time.cumulative[wi];
 339    *reset = brw->shader_time.cumulative[ri];
 340 }
 341
 342 static void
 343 print_shader_time_line(const char *stage, const char *name,
 344                        int shader_num, uint64_t time, uint64_t total)
 345 {
 346    fprintf(stderr, "%-6s%-18s", stage, name);
 347
 348    if (shader_num != 0)
 349       fprintf(stderr, "%4d: ", shader_num);
 350    else
 351       fprintf(stderr, "    : ");
 352
 353    fprintf(stderr, "%16lld (%7.2f Gcycles)      %4.1f%%\n",
 354            (long long)time,
 355            (double)time / 1000000000.0,
 356            (double)time / total * 100.0);
 357 }
 358
 359 static void
 360 brw_report_shader_time(struct brw_context *brw)
 361 {
 362    if (!brw->shader_time.bo || !brw->shader_time.num_entries)
 363       return;
 364
 365    uint64_t scaled[brw->shader_time.num_entries];
 366    uint64_t *sorted[brw->shader_time.num_entries];
 367    uint64_t total_by_type[ST_CS + 1];
 368    memset(total_by_type, 0, sizeof(total_by_type));
 369    double total = 0;
 370    for (int i = 0; i < brw->shader_time.num_entries; i++) {
 371       uint64_t written = 0, reset = 0;
 372       enum shader_time_shader_type type = brw->shader_time.types[i];
 373
 374       sorted[i] = &scaled[i];
 375
 376       switch (type) {
 377       case ST_VS_WRITTEN:
 378       case ST_VS_RESET:
 379       case ST_GS_WRITTEN:
 380       case ST_GS_RESET:
 381       case ST_FS8_WRITTEN:
 382       case ST_FS8_RESET:
 383       case ST_FS16_WRITTEN:
 384       case ST_FS16_RESET:
 385       case ST_CS_WRITTEN:
 386       case ST_CS_RESET:
 387          /* We'll handle these when along with the time. */
 388          scaled[i] = 0;
 389          continue;
 390
 391       case ST_VS:
 392       case ST_GS:
 393       case ST_FS8:
 394       case ST_FS16:
 395       case ST_CS:
 396          get_written_and_reset(brw, i, &written, &reset);
 397          break;
 398
 399       default:
 400          /* I sometimes want to print things that aren't the 3 shader times.
 401           * Just print the sum in that case.
 402           */
 403          written = 1;
 404          reset = 0;
 405          break;
 406       }
 407
 408       uint64_t time = brw->shader_time.cumulative[i];
 409       if (written) {
 410          scaled[i] = time / written * (written + reset);
 411       } else {
 412          scaled[i] = time;
 413       }
 414
 415       switch (type) {
 416       case ST_VS:
 417       case ST_GS:
 418       case ST_FS8:
 419       case ST_FS16:
 420       case ST_CS:
 421          total_by_type[type] += scaled[i];
 422          break;
 423       default:
 424          break;
 425       }
 426
 427       total += scaled[i];
 428    }
 429
 430    if (total == 0) {
 431       fprintf(stderr, "No shader time collected yet\n");
 432       return;
 433    }
 434
 435    qsort(sorted, brw->shader_time.num_entries, sizeof(sorted[0]), compare_time);
 436
 437    fprintf(stderr, "\n");
 438    fprintf(stderr, "type          ID                  cycles spent                   %% of total\n");
 439    for (int s = 0; s < brw->shader_time.num_entries; s++) {
 440       const char *stage;
 441       /* Work back from the sorted pointers times to a time to print. */
 442       int i = sorted[s] - scaled;
 443
 444       if (scaled[i] == 0)
 445          continue;
 446
 447       int shader_num = brw->shader_time.ids[i];
 448       const char *shader_name = brw->shader_time.names[i];
 449
 450       switch (brw->shader_time.types[i]) {
 451       case ST_VS:
 452          stage = "vs";
 453          break;
 454       case ST_GS:
 455          stage = "gs";
 456          break;
 457       case ST_FS8:
 458          stage = "fs8";
 459          break;
 460       case ST_FS16:
 461          stage = "fs16";
 462          break;
 463       case ST_CS:
 464          stage = "cs";
 465          break;
 466       default:
 467          stage = "other";
 468          break;
 469       }
 470
 471       print_shader_time_line(stage, shader_name, shader_num,
 472                              scaled[i], total);
 473    }
 474
 475    fprintf(stderr, "\n");
 476    print_shader_time_line("total", "vs", 0, total_by_type[ST_VS], total);
 477    print_shader_time_line("total", "gs", 0, total_by_type[ST_GS], total);
 478    print_shader_time_line("total", "fs8", 0, total_by_type[ST_FS8], total);
 479    print_shader_time_line("total", "fs16", 0, total_by_type[ST_FS16], total);
 480    print_shader_time_line("total", "cs", 0, total_by_type[ST_CS], total);
 481 }
 482
 483 static void
 484 brw_collect_shader_time(struct brw_context *brw)
 485 {
 486    if (!brw->shader_time.bo)
 487       return;
 488
 489    /* This probably stalls on the last rendering.  We could fix that by
 490     * delaying reading the reports, but it doesn't look like it's a big
 491     * overhead compared to the cost of tracking the time in the first place.
 492     */
 493    drm_intel_bo_map(brw->shader_time.bo, true);
 494
 495    uint32_t *times = brw->shader_time.bo->virtual;
 496
 497    for (int i = 0; i < brw->shader_time.num_entries; i++) {
 498       brw->shader_time.cumulative[i] += times[i * SHADER_TIME_STRIDE / 4];
 499    }
 500
 501    /* Zero the BO out to clear it out for our next collection.
 502     */
 503    memset(times, 0, brw->shader_time.bo->size);
 504    drm_intel_bo_unmap(brw->shader_time.bo);
 505 }
 506
 507 void
 508 brw_collect_and_report_shader_time(struct brw_context *brw)
 509 {
 510    brw_collect_shader_time(brw);
 511
 512    if (brw->shader_time.report_time == 0 ||
 513        get_time() - brw->shader_time.report_time >= 1.0) {
 514       brw_report_shader_time(brw);
 515       brw->shader_time.report_time = get_time();
 516    }
 517 }
 518
 519 /**
 520  * Chooses an index in the shader_time buffer and sets up tracking information
 521  * for our printouts.
 522  *
 523  * Note that this holds on to references to the underlying programs, which may
 524  * change their lifetimes compared to normal operation.
 525  */
 526 int
 527 brw_get_shader_time_index(struct brw_context *brw,
 528                           struct gl_shader_program *shader_prog,
 529                           struct gl_program *prog,
 530                           enum shader_time_shader_type type)
 531 {
 532    int shader_time_index = brw->shader_time.num_entries++;
 533    assert(shader_time_index < brw->shader_time.max_entries);
 534    brw->shader_time.types[shader_time_index] = type;
 535
 536    int id = shader_prog ? shader_prog->Name : prog->Id;
 537    const char *name;
 538    if (id == 0) {
 539       name = "ff";
 540    } else if (!shader_prog) {
 541       name = "prog";
 542    } else if (shader_prog->Label) {
 543       name = ralloc_strdup(brw->shader_time.names, shader_prog->Label);
 544    } else {
 545       name = "glsl";
 546    }
 547
 548    brw->shader_time.names[shader_time_index] = name;
 549    brw->shader_time.ids[shader_time_index] = id;
 550
 551    return shader_time_index;
 552 }
 553
 554 void
 555 brw_destroy_shader_time(struct brw_context *brw)
 556 {
 557    drm_intel_bo_unreference(brw->shader_time.bo);
 558    brw->shader_time.bo = NULL;
 559 }
 560
 561 void
 562 brw_mark_surface_used(struct brw_stage_prog_data *prog_data,
 563                       unsigned surf_index)
 564 {
 565    assert(surf_index < BRW_MAX_SURFACES);
 566
 567    prog_data->binding_table.size_bytes =
 568       MAX2(prog_data->binding_table.size_bytes, (surf_index + 1) * 4);
 569 }
 570
 571 bool
 572 brw_stage_prog_data_compare(const struct brw_stage_prog_data *a,
 573                             const struct brw_stage_prog_data *b)
 574 {
 575    /* Compare all the struct up to the pointers. */
 576    if (memcmp(a, b, offsetof(struct brw_stage_prog_data, param)))
 577       return false;
 578
 579    if (memcmp(a->param, b->param, a->nr_params * sizeof(void *)))
 580       return false;
 581
 582    if (memcmp(a->pull_param, b->pull_param, a->nr_pull_params * sizeof(void *)))
 583       return false;
 584
 585    return true;
 586 }
 587
 588 void
 589 brw_stage_prog_data_free(const void *p)
 590 {
 591    struct brw_stage_prog_data *prog_data = (struct brw_stage_prog_data *)p;
 592
 593    ralloc_free(prog_data->param);
 594    ralloc_free(prog_data->pull_param);
 595 }
 596
 597 void
 598 brw_dump_ir(const char *stage, struct gl_shader_program *shader_prog,
 599             struct gl_shader *shader, struct gl_program *prog)
 600 {
 601    if (shader_prog) {
 602       fprintf(stderr,
 603               "GLSL IR for native %s shader %d:\n", stage, shader_prog->Name);
 604       _mesa_print_ir(stderr, shader->ir, NULL);
 605       fprintf(stderr, "\n\n");
 606    } else {
 607       fprintf(stderr, "ARB_%s_program %d ir for native %s shader\n",
 608               stage, prog->Id, stage);
 609       _mesa_print_program(prog);
 610    }
 611 }