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 || type == ST_FS16);
 327
 328    /* Find where we recorded written and reset. */
 329    int wi, ri;
 330
 331    for (wi = i; brw->shader_time.types[wi] != type + 1; wi++)
 332       ;
 333
 334    for (ri = i; brw->shader_time.types[ri] != type + 2; ri++)
 335       ;
 336
 337    *written = brw->shader_time.cumulative[wi];
 338    *reset = brw->shader_time.cumulative[ri];
 339 }
 340
 341 static void
 342 print_shader_time_line(const char *stage, const char *name,
 343                        int shader_num, uint64_t time, uint64_t total)
 344 {
 345    fprintf(stderr, "%-6s%-18s", stage, name);
 346
 347    if (shader_num != 0)
 348       fprintf(stderr, "%4d: ", shader_num);
 349    else
 350       fprintf(stderr, "    : ");
 351
 352    fprintf(stderr, "%16lld (%7.2f Gcycles)      %4.1f%%\n",
 353            (long long)time,
 354            (double)time / 1000000000.0,
 355            (double)time / total * 100.0);
 356 }
 357
 358 static void
 359 brw_report_shader_time(struct brw_context *brw)
 360 {
 361    if (!brw->shader_time.bo || !brw->shader_time.num_entries)
 362       return;
 363
 364    uint64_t scaled[brw->shader_time.num_entries];
 365    uint64_t *sorted[brw->shader_time.num_entries];
 366    uint64_t total_by_type[ST_FS16 + 1];
 367    memset(total_by_type, 0, sizeof(total_by_type));
 368    double total = 0;
 369    for (int i = 0; i < brw->shader_time.num_entries; i++) {
 370       uint64_t written = 0, reset = 0;
 371       enum shader_time_shader_type type = brw->shader_time.types[i];
 372
 373       sorted[i] = &scaled[i];
 374
 375       switch (type) {
 376       case ST_VS_WRITTEN:
 377       case ST_VS_RESET:
 378       case ST_GS_WRITTEN:
 379       case ST_GS_RESET:
 380       case ST_FS8_WRITTEN:
 381       case ST_FS8_RESET:
 382       case ST_FS16_WRITTEN:
 383       case ST_FS16_RESET:
 384          /* We'll handle these when along with the time. */
 385          scaled[i] = 0;
 386          continue;
 387
 388       case ST_VS:
 389       case ST_GS:
 390       case ST_FS8:
 391       case ST_FS16:
 392          get_written_and_reset(brw, i, &written, &reset);
 393          break;
 394
 395       default:
 396          /* I sometimes want to print things that aren't the 3 shader times.
 397           * Just print the sum in that case.
 398           */
 399          written = 1;
 400          reset = 0;
 401          break;
 402       }
 403
 404       uint64_t time = brw->shader_time.cumulative[i];
 405       if (written) {
 406          scaled[i] = time / written * (written + reset);
 407       } else {
 408          scaled[i] = time;
 409       }
 410
 411       switch (type) {
 412       case ST_VS:
 413       case ST_GS:
 414       case ST_FS8:
 415       case ST_FS16:
 416          total_by_type[type] += scaled[i];
 417          break;
 418       default:
 419          break;
 420       }
 421
 422       total += scaled[i];
 423    }
 424
 425    if (total == 0) {
 426       fprintf(stderr, "No shader time collected yet\n");
 427       return;
 428    }
 429
 430    qsort(sorted, brw->shader_time.num_entries, sizeof(sorted[0]), compare_time);
 431
 432    fprintf(stderr, "\n");
 433    fprintf(stderr, "type          ID                  cycles spent                   %% of total\n");
 434    for (int s = 0; s < brw->shader_time.num_entries; s++) {
 435       const char *stage;
 436       /* Work back from the sorted pointers times to a time to print. */
 437       int i = sorted[s] - scaled;
 438
 439       if (scaled[i] == 0)
 440          continue;
 441
 442       int shader_num = brw->shader_time.ids[i];
 443       const char *shader_name = brw->shader_time.names[i];
 444
 445       switch (brw->shader_time.types[i]) {
 446       case ST_VS:
 447          stage = "vs";
 448          break;
 449       case ST_GS:
 450          stage = "gs";
 451          break;
 452       case ST_FS8:
 453          stage = "fs8";
 454          break;
 455       case ST_FS16:
 456          stage = "fs16";
 457          break;
 458       default:
 459          stage = "other";
 460          break;
 461       }
 462
 463       print_shader_time_line(stage, shader_name, shader_num,
 464                              scaled[i], total);
 465    }
 466
 467    fprintf(stderr, "\n");
 468    print_shader_time_line("total", "vs", 0, total_by_type[ST_VS], total);
 469    print_shader_time_line("total", "gs", 0, total_by_type[ST_GS], total);
 470    print_shader_time_line("total", "fs8", 0, total_by_type[ST_FS8], total);
 471    print_shader_time_line("total", "fs16", 0, total_by_type[ST_FS16], total);
 472 }
 473
 474 static void
 475 brw_collect_shader_time(struct brw_context *brw)
 476 {
 477    if (!brw->shader_time.bo)
 478       return;
 479
 480    /* This probably stalls on the last rendering.  We could fix that by
 481     * delaying reading the reports, but it doesn't look like it's a big
 482     * overhead compared to the cost of tracking the time in the first place.
 483     */
 484    drm_intel_bo_map(brw->shader_time.bo, true);
 485
 486    uint32_t *times = brw->shader_time.bo->virtual;
 487
 488    for (int i = 0; i < brw->shader_time.num_entries; i++) {
 489       brw->shader_time.cumulative[i] += times[i * SHADER_TIME_STRIDE / 4];
 490    }
 491
 492    /* Zero the BO out to clear it out for our next collection.
 493     */
 494    memset(times, 0, brw->shader_time.bo->size);
 495    drm_intel_bo_unmap(brw->shader_time.bo);
 496 }
 497
 498 void
 499 brw_collect_and_report_shader_time(struct brw_context *brw)
 500 {
 501    brw_collect_shader_time(brw);
 502
 503    if (brw->shader_time.report_time == 0 ||
 504        get_time() - brw->shader_time.report_time >= 1.0) {
 505       brw_report_shader_time(brw);
 506       brw->shader_time.report_time = get_time();
 507    }
 508 }
 509
 510 /**
 511  * Chooses an index in the shader_time buffer and sets up tracking information
 512  * for our printouts.
 513  *
 514  * Note that this holds on to references to the underlying programs, which may
 515  * change their lifetimes compared to normal operation.
 516  */
 517 int
 518 brw_get_shader_time_index(struct brw_context *brw,
 519                           struct gl_shader_program *shader_prog,
 520                           struct gl_program *prog,
 521                           enum shader_time_shader_type type)
 522 {
 523    int shader_time_index = brw->shader_time.num_entries++;
 524    assert(shader_time_index < brw->shader_time.max_entries);
 525    brw->shader_time.types[shader_time_index] = type;
 526
 527    int id = shader_prog ? shader_prog->Name : prog->Id;
 528    const char *name;
 529    if (id == 0) {
 530       name = "ff";
 531    } else if (!shader_prog) {
 532       name = "prog";
 533    } else if (shader_prog->Label) {
 534       name = ralloc_strdup(brw->shader_time.names, shader_prog->Label);
 535    } else {
 536       name = "glsl";
 537    }
 538
 539    brw->shader_time.names[shader_time_index] = name;
 540    brw->shader_time.ids[shader_time_index] = id;
 541
 542    return shader_time_index;
 543 }
 544
 545 void
 546 brw_destroy_shader_time(struct brw_context *brw)
 547 {
 548    drm_intel_bo_unreference(brw->shader_time.bo);
 549    brw->shader_time.bo = NULL;
 550 }
 551
 552 void
 553 brw_mark_surface_used(struct brw_stage_prog_data *prog_data,
 554                       unsigned surf_index)
 555 {
 556    assert(surf_index < BRW_MAX_SURFACES);
 557
 558    prog_data->binding_table.size_bytes =
 559       MAX2(prog_data->binding_table.size_bytes, (surf_index + 1) * 4);
 560 }
 561
 562 bool
 563 brw_stage_prog_data_compare(const struct brw_stage_prog_data *a,
 564                             const struct brw_stage_prog_data *b)
 565 {
 566    /* Compare all the struct up to the pointers. */
 567    if (memcmp(a, b, offsetof(struct brw_stage_prog_data, param)))
 568       return false;
 569
 570    if (memcmp(a->param, b->param, a->nr_params * sizeof(void *)))
 571       return false;
 572
 573    if (memcmp(a->pull_param, b->pull_param, a->nr_pull_params * sizeof(void *)))
 574       return false;
 575
 576    return true;
 577 }
 578
 579 void
 580 brw_stage_prog_data_free(const void *p)
 581 {
 582    struct brw_stage_prog_data *prog_data = (struct brw_stage_prog_data *)p;
 583
 584    ralloc_free(prog_data->param);
 585    ralloc_free(prog_data->pull_param);
 586 }
 587
 588 void
 589 brw_dump_ir(const char *stage, struct gl_shader_program *shader_prog,
 590             struct gl_shader *shader, struct gl_program *prog)
 591 {
 592    if (shader_prog) {
 593       fprintf(stderr,
 594               "GLSL IR for native %s shader %d:\n", stage, shader_prog->Name);
 595       _mesa_print_ir(stderr, shader->ir, NULL);
 596       fprintf(stderr, "\n\n");
 597    } else {
 598       fprintf(stderr, "ARB_%s_program %d ir for native %s shader\n",
 599               stage, prog->Id, stage);
 600       _mesa_print_program(prog);
 601    }
 602 }