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

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 /** @file brw_queryobj.c
  29  *
  30  * Support for query objects (GL_ARB_occlusion_query, GL_ARB_timer_query,
  31  * GL_EXT_transform_feedback, and friends).
  32  *
  33  * The hardware provides a PIPE_CONTROL command that can report the number of
  34  * fragments that passed the depth test, or the hardware timer.  They are
  35  * appropriately synced with the stage of the pipeline for our extensions'
  36  * needs.
  37  */
  38 #include "main/queryobj.h"
  39
  40 #include "brw_context.h"
  41 #include "brw_defines.h"
  42 #include "brw_state.h"
  43 #include "intel_batchbuffer.h"
  44
  45 /* As best we know currently, the Gen HW timestamps are 36bits across
  46  * all platforms, which we need to account for when calculating a
  47  * delta to measure elapsed time.
  48  *
  49  * The timestamps read via glGetTimestamp() / brw_get_timestamp() sometimes
  50  * only have 32bits due to a kernel bug and so in that case we make sure to
  51  * treat all raw timestamps as 32bits so they overflow consistently and remain
  52  * comparable. (Note: the timestamps being passed here are not from the kernel
  53  * so we don't need to be taking the upper 32bits in this buggy kernel case we
  54  * are just clipping to 32bits here for consistency.)
  55  */
  56 uint64_t
  57 brw_raw_timestamp_delta(struct brw_context *brw, uint64_t time0, uint64_t time1)
  58 {
  59    if (brw->screen->hw_has_timestamp == 2) {
  60       /* Kernel clips timestamps to 32bits in this case, so we also clip
  61        * PIPE_CONTROL timestamps for consistency.
  62        */
  63       return (uint32_t)time1 - (uint32_t)time0;
  64    } else {
  65       if (time0 > time1) {
  66          return (1ULL << 36) + time1 - time0;
  67       } else {
  68          return time1 - time0;
  69       }
  70    }
  71 }
  72
  73 /**
  74  * Emit PIPE_CONTROLs to write the current GPU timestamp into a buffer.
  75  */
  76 void
  77 brw_write_timestamp(struct brw_context *brw, struct brw_bo *query_bo, int idx)
  78 {
  79    const struct gen_device_info *devinfo = &brw->screen->devinfo;
  80
  81    if (devinfo->gen == 6) {
  82       /* Emit Sandybridge workaround flush: */
  83       brw_emit_pipe_control_flush(brw,
  84                                   PIPE_CONTROL_CS_STALL |
  85                                   PIPE_CONTROL_STALL_AT_SCOREBOARD);
  86    }
  87
  88    uint32_t flags = PIPE_CONTROL_WRITE_TIMESTAMP;
  89
  90    if (devinfo->gen == 9 && devinfo->gt == 4)
  91       flags |= PIPE_CONTROL_CS_STALL;
  92
  93    brw_emit_pipe_control_write(brw, flags,
  94                                query_bo, idx * sizeof(uint64_t), 0);
  95 }
  96
  97 /**
  98  * Emit PIPE_CONTROLs to write the PS_DEPTH_COUNT register into a buffer.
  99  */
 100 void
 101 brw_write_depth_count(struct brw_context *brw, struct brw_bo *query_bo, int idx)
 102 {
 103    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 104    uint32_t flags = PIPE_CONTROL_WRITE_DEPTH_COUNT | PIPE_CONTROL_DEPTH_STALL;
 105
 106    if (devinfo->gen == 9 && devinfo->gt == 4)
 107       flags |= PIPE_CONTROL_CS_STALL;
 108
 109    if (devinfo->gen >= 10) {
 110       /* "Driver must program PIPE_CONTROL with only Depth Stall Enable bit set
 111        * prior to programming a PIPE_CONTROL with Write PS Depth Count Post sync
 112        * operation."
 113        */
 114       brw_emit_pipe_control_flush(brw, PIPE_CONTROL_DEPTH_STALL);
 115    }
 116
 117    brw_emit_pipe_control_write(brw, flags,
 118                                query_bo, idx * sizeof(uint64_t), 0);
 119 }
 120
 121 /**
 122  * Wait on the query object's BO and calculate the final result.
 123  */
 124 static void
 125 brw_queryobj_get_results(struct gl_context *ctx,
 126                          struct brw_query_object *query)
 127 {
 128    struct brw_context *brw = brw_context(ctx);
 129    UNUSED const struct gen_device_info *devinfo = &brw->screen->devinfo;
 130
 131    int i;
 132    uint64_t *results;
 133
 134    assert(devinfo->gen < 6);
 135
 136    if (query->bo == NULL)
 137       return;
 138
 139    /* If the application has requested the query result, but this batch is
 140     * still contributing to it, flush it now so the results will be present
 141     * when mapped.
 142     */
 143    if (brw_batch_references(&brw->batch, query->bo))
 144       intel_batchbuffer_flush(brw);
 145
 146    if (unlikely(brw->perf_debug)) {
 147       if (brw_bo_busy(query->bo)) {
 148          perf_debug("Stalling on the GPU waiting for a query object.\n");
 149       }
 150    }
 151
 152    results = brw_bo_map(brw, query->bo, MAP_READ);
 153    switch (query->Base.Target) {
 154    case GL_TIME_ELAPSED_EXT:
 155       /* The query BO contains the starting and ending timestamps.
 156        * Subtract the two and convert to nanoseconds.
 157        */
 158       query->Base.Result = brw_raw_timestamp_delta(brw, results[0], results[1]);
 159       query->Base.Result = gen_device_info_timebase_scale(devinfo, query->Base.Result);
 160       break;
 161
 162    case GL_TIMESTAMP:
 163       /* The query BO contains a single timestamp value in results[0]. */
 164       query->Base.Result = gen_device_info_timebase_scale(devinfo, results[0]);
 165
 166       /* Ensure the scaled timestamp overflows according to
 167        * GL_QUERY_COUNTER_BITS
 168        */
 169       query->Base.Result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 170       break;
 171
 172    case GL_SAMPLES_PASSED_ARB:
 173       /* Loop over pairs of values from the BO, which are the PS_DEPTH_COUNT
 174        * value at the start and end of the batchbuffer.  Subtract them to
 175        * get the number of fragments which passed the depth test in each
 176        * individual batch, and add those differences up to get the number
 177        * of fragments for the entire query.
 178        *
 179        * Note that query->Base.Result may already be non-zero.  We may have
 180        * run out of space in the query's BO and allocated a new one.  If so,
 181        * this function was already called to accumulate the results so far.
 182        */
 183       for (i = 0; i < query->last_index; i++) {
 184          query->Base.Result += results[i * 2 + 1] - results[i * 2];
 185       }
 186       break;
 187
 188    case GL_ANY_SAMPLES_PASSED:
 189    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 190       /* If the starting and ending PS_DEPTH_COUNT from any of the batches
 191        * differ, then some fragments passed the depth test.
 192        */
 193       for (i = 0; i < query->last_index; i++) {
 194          if (results[i * 2 + 1] != results[i * 2]) {
 195             query->Base.Result = GL_TRUE;
 196             break;
 197          }
 198       }
 199       break;
 200
 201    default:
 202       unreachable("Unrecognized query target in brw_queryobj_get_results()");
 203    }
 204    brw_bo_unmap(query->bo);
 205
 206    /* Now that we've processed the data stored in the query's buffer object,
 207     * we can release it.
 208     */
 209    brw_bo_unreference(query->bo);
 210    query->bo = NULL;
 211 }
 212
 213 /**
 214  * The NewQueryObject() driver hook.
 215  *
 216  * Allocates and initializes a new query object.
 217  */
 218 static struct gl_query_object *
 219 brw_new_query_object(struct gl_context *ctx, GLuint id)
 220 {
 221    struct brw_query_object *query;
 222
 223    query = calloc(1, sizeof(struct brw_query_object));
 224
 225    query->Base.Id = id;
 226    query->Base.Result = 0;
 227    query->Base.Active = false;
 228    query->Base.Ready = true;
 229
 230    return &query->Base;
 231 }
 232
 233 /**
 234  * The DeleteQuery() driver hook.
 235  */
 236 static void
 237 brw_delete_query(struct gl_context *ctx, struct gl_query_object *q)
 238 {
 239    struct brw_query_object *query = (struct brw_query_object *)q;
 240
 241    brw_bo_unreference(query->bo);
 242    _mesa_delete_query(ctx, q);
 243 }
 244
 245 /**
 246  * Gen4-5 driver hook for glBeginQuery().
 247  *
 248  * Initializes driver structures and emits any GPU commands required to begin
 249  * recording data for the query.
 250  */
 251 static void
 252 brw_begin_query(struct gl_context *ctx, struct gl_query_object *q)
 253 {
 254    struct brw_context *brw = brw_context(ctx);
 255    struct brw_query_object *query = (struct brw_query_object *)q;
 256    UNUSED const struct gen_device_info *devinfo = &brw->screen->devinfo;
 257
 258    assert(devinfo->gen < 6);
 259
 260    switch (query->Base.Target) {
 261    case GL_TIME_ELAPSED_EXT:
 262       /* For timestamp queries, we record the starting time right away so that
 263        * we measure the full time between BeginQuery and EndQuery.  There's
 264        * some debate about whether this is the right thing to do.  Our decision
 265        * is based on the following text from the ARB_timer_query extension:
 266        *
 267        * "(5) Should the extension measure total time elapsed between the full
 268        *      completion of the BeginQuery and EndQuery commands, or just time
 269        *      spent in the graphics library?
 270        *
 271        *  RESOLVED:  This extension will measure the total time elapsed
 272        *  between the full completion of these commands.  Future extensions
 273        *  may implement a query to determine time elapsed at different stages
 274        *  of the graphics pipeline."
 275        *
 276        * We write a starting timestamp now (at index 0).  At EndQuery() time,
 277        * we'll write a second timestamp (at index 1), and subtract the two to
 278        * obtain the time elapsed.  Notably, this includes time elapsed while
 279        * the system was doing other work, such as running other applications.
 280        */
 281       brw_bo_unreference(query->bo);
 282       query->bo =
 283          brw_bo_alloc(brw->bufmgr, "timer query", 4096, BRW_MEMZONE_OTHER);
 284       brw_write_timestamp(brw, query->bo, 0);
 285       break;
 286
 287    case GL_ANY_SAMPLES_PASSED:
 288    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 289    case GL_SAMPLES_PASSED_ARB:
 290       /* For occlusion queries, we delay taking an initial sample until the
 291        * first drawing occurs in this batch.  See the reasoning in the comments
 292        * for brw_emit_query_begin() below.
 293        *
 294        * Since we're starting a new query, we need to be sure to throw away
 295        * any previous occlusion query results.
 296        */
 297       brw_bo_unreference(query->bo);
 298       query->bo = NULL;
 299       query->last_index = -1;
 300
 301       brw->query.obj = query;
 302
 303       /* Depth statistics on Gen4 require strange workarounds, so we try to
 304        * avoid them when necessary.  They're required for occlusion queries,
 305        * so turn them on now.
 306        */
 307       brw->stats_wm++;
 308       brw->ctx.NewDriverState |= BRW_NEW_STATS_WM;
 309       break;
 310
 311    default:
 312       unreachable("Unrecognized query target in brw_begin_query()");
 313    }
 314 }
 315
 316 /**
 317  * Gen4-5 driver hook for glEndQuery().
 318  *
 319  * Emits GPU commands to record a final query value, ending any data capturing.
 320  * However, the final result isn't necessarily available until the GPU processes
 321  * those commands.  brw_queryobj_get_results() processes the captured data to
 322  * produce the final result.
 323  */
 324 static void
 325 brw_end_query(struct gl_context *ctx, struct gl_query_object *q)
 326 {
 327    struct brw_context *brw = brw_context(ctx);
 328    struct brw_query_object *query = (struct brw_query_object *)q;
 329    UNUSED const struct gen_device_info *devinfo = &brw->screen->devinfo;
 330
 331    assert(devinfo->gen < 6);
 332
 333    switch (query->Base.Target) {
 334    case GL_TIME_ELAPSED_EXT:
 335       /* Write the final timestamp. */
 336       brw_write_timestamp(brw, query->bo, 1);
 337       break;
 338
 339    case GL_ANY_SAMPLES_PASSED:
 340    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 341    case GL_SAMPLES_PASSED_ARB:
 342
 343       /* No query->bo means that EndQuery was called after BeginQuery with no
 344        * intervening drawing. Rather than doing nothing at all here in this
 345        * case, we emit the query_begin and query_end state to the
 346        * hardware. This is to guarantee that waiting on the result of this
 347        * empty state will cause all previous queries to complete at all, as
 348        * required by the specification:
 349        *
 350        *        It must always be true that if any query object
 351        *        returns a result available of TRUE, all queries of the
 352        *        same type issued prior to that query must also return
 353        *        TRUE. [Open GL 4.3 (Core Profile) Section 4.2.1]
 354        */
 355       if (!query->bo) {
 356          brw_emit_query_begin(brw);
 357       }
 358
 359       assert(query->bo);
 360
 361       brw_emit_query_end(brw);
 362
 363       brw->query.obj = NULL;
 364
 365       brw->stats_wm--;
 366       brw->ctx.NewDriverState |= BRW_NEW_STATS_WM;
 367       break;
 368
 369    default:
 370       unreachable("Unrecognized query target in brw_end_query()");
 371    }
 372 }
 373
 374 /**
 375  * The Gen4-5 WaitQuery() driver hook.
 376  *
 377  * Wait for a query result to become available and return it.  This is the
 378  * backing for glGetQueryObjectiv() with the GL_QUERY_RESULT pname.
 379  */
 380 static void brw_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 381 {
 382    struct brw_query_object *query = (struct brw_query_object *)q;
 383    UNUSED const struct gen_device_info *devinfo =
 384       &brw_context(ctx)->screen->devinfo;
 385
 386    assert(devinfo->gen < 6);
 387
 388    brw_queryobj_get_results(ctx, query);
 389    query->Base.Ready = true;
 390 }
 391
 392 /**
 393  * The Gen4-5 CheckQuery() driver hook.
 394  *
 395  * Checks whether a query result is ready yet.  If not, flushes.
 396  * This is the backing for glGetQueryObjectiv()'s QUERY_RESULT_AVAILABLE pname.
 397  */
 398 static void brw_check_query(struct gl_context *ctx, struct gl_query_object *q)
 399 {
 400    struct brw_context *brw = brw_context(ctx);
 401    struct brw_query_object *query = (struct brw_query_object *)q;
 402    UNUSED const struct gen_device_info *devinfo = &brw->screen->devinfo;
 403
 404    assert(devinfo->gen < 6);
 405
 406    /* From the GL_ARB_occlusion_query spec:
 407     *
 408     *     "Instead of allowing for an infinite loop, performing a
 409     *      QUERY_RESULT_AVAILABLE_ARB will perform a flush if the result is
 410     *      not ready yet on the first time it is queried.  This ensures that
 411     *      the async query will return true in finite time.
 412     */
 413    if (query->bo && brw_batch_references(&brw->batch, query->bo))
 414       intel_batchbuffer_flush(brw);
 415
 416    if (query->bo == NULL || !brw_bo_busy(query->bo)) {
 417       brw_queryobj_get_results(ctx, query);
 418       query->Base.Ready = true;
 419    }
 420 }
 421
 422 /**
 423  * Ensure there query's BO has enough space to store a new pair of values.
 424  *
 425  * If not, gather the existing BO's results and create a new buffer of the
 426  * same size.
 427  */
 428 static void
 429 ensure_bo_has_space(struct gl_context *ctx, struct brw_query_object *query)
 430 {
 431    struct brw_context *brw = brw_context(ctx);
 432    UNUSED const struct gen_device_info *devinfo = &brw->screen->devinfo;
 433
 434    assert(devinfo->gen < 6);
 435
 436    if (!query->bo || query->last_index * 2 + 1 >= 4096 / sizeof(uint64_t)) {
 437
 438       if (query->bo != NULL) {
 439          /* The old query BO did not have enough space, so we allocated a new
 440           * one.  Gather the results so far (adding up the differences) and
 441           * release the old BO.
 442           */
 443          brw_queryobj_get_results(ctx, query);
 444       }
 445
 446       query->bo = brw_bo_alloc(brw->bufmgr, "query", 4096, BRW_MEMZONE_OTHER);
 447       query->last_index = 0;
 448    }
 449 }
 450
 451 /**
 452  * Record the PS_DEPTH_COUNT value (for occlusion queries) just before
 453  * primitive drawing.
 454  *
 455  * In a pre-hardware context world, the single PS_DEPTH_COUNT register is
 456  * shared among all applications using the GPU.  However, our query value
 457  * needs to only include fragments generated by our application/GL context.
 458  *
 459  * To accommodate this, we record PS_DEPTH_COUNT at the start and end of
 460  * each batchbuffer (technically, the first primitive drawn and flush time).
 461  * Subtracting each pair of values calculates the change in PS_DEPTH_COUNT
 462  * caused by a batchbuffer.  Since there is no preemption inside batches,
 463  * this is guaranteed to only measure the effects of our current application.
 464  *
 465  * Adding each of these differences (in case drawing is done over many batches)
 466  * produces the final expected value.
 467  *
 468  * In a world with hardware contexts, PS_DEPTH_COUNT is saved and restored
 469  * as part of the context state, so this is unnecessary, and skipped.
 470  */
 471 void
 472 brw_emit_query_begin(struct brw_context *brw)
 473 {
 474    struct gl_context *ctx = &brw->ctx;
 475    struct brw_query_object *query = brw->query.obj;
 476
 477    /* Skip if we're not doing any queries, or we've already recorded the
 478     * initial query value for this batchbuffer.
 479     */
 480    if (!query || brw->query.begin_emitted)
 481       return;
 482
 483    ensure_bo_has_space(ctx, query);
 484
 485    brw_write_depth_count(brw, query->bo, query->last_index * 2);
 486
 487    brw->query.begin_emitted = true;
 488 }
 489
 490 /**
 491  * Called at batchbuffer flush to get an ending PS_DEPTH_COUNT
 492  * (for non-hardware context platforms).
 493  *
 494  * See the explanation in brw_emit_query_begin().
 495  */
 496 void
 497 brw_emit_query_end(struct brw_context *brw)
 498 {
 499    struct brw_query_object *query = brw->query.obj;
 500
 501    if (!brw->query.begin_emitted)
 502       return;
 503
 504    brw_write_depth_count(brw, query->bo, query->last_index * 2 + 1);
 505
 506    brw->query.begin_emitted = false;
 507    query->last_index++;
 508 }
 509
 510 /**
 511  * Driver hook for glQueryCounter().
 512  *
 513  * This handles GL_TIMESTAMP queries, which perform a pipelined read of the
 514  * current GPU time.  This is unlike GL_TIME_ELAPSED, which measures the
 515  * time while the query is active.
 516  */
 517 void
 518 brw_query_counter(struct gl_context *ctx, struct gl_query_object *q)
 519 {
 520    struct brw_context *brw = brw_context(ctx);
 521    struct brw_query_object *query = (struct brw_query_object *) q;
 522
 523    assert(q->Target == GL_TIMESTAMP);
 524
 525    brw_bo_unreference(query->bo);
 526    query->bo =
 527       brw_bo_alloc(brw->bufmgr, "timestamp query", 4096, BRW_MEMZONE_OTHER);
 528    brw_write_timestamp(brw, query->bo, 0);
 529
 530    query->flushed = false;
 531 }
 532
 533 /**
 534  * Read the TIMESTAMP register immediately (in a non-pipelined fashion).
 535  *
 536  * This is used to implement the GetTimestamp() driver hook.
 537  */
 538 static uint64_t
 539 brw_get_timestamp(struct gl_context *ctx)
 540 {
 541    struct brw_context *brw = brw_context(ctx);
 542    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 543    uint64_t result = 0;
 544
 545    switch (brw->screen->hw_has_timestamp) {
 546    case 3: /* New kernel, always full 36bit accuracy */
 547       brw_reg_read(brw->bufmgr, TIMESTAMP | 1, &result);
 548       break;
 549    case 2: /* 64bit kernel, result is left-shifted by 32bits, losing 4bits */
 550       brw_reg_read(brw->bufmgr, TIMESTAMP, &result);
 551       result = result >> 32;
 552       break;
 553    case 1: /* 32bit kernel, result is 36bit wide but may be inaccurate! */
 554       brw_reg_read(brw->bufmgr, TIMESTAMP, &result);
 555       break;
 556    }
 557
 558    /* Scale to nanosecond units */
 559    result = gen_device_info_timebase_scale(devinfo, result);
 560
 561    /* Ensure the scaled timestamp overflows according to
 562     * GL_QUERY_COUNTER_BITS.  Technically this isn't required if
 563     * querying GL_TIMESTAMP via glGetInteger but it seems best to keep
 564     * QueryObject and GetInteger timestamps consistent.
 565     */
 566    result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 567    return result;
 568 }
 569
 570 /**
 571  * Is this type of query written by PIPE_CONTROL?
 572  */
 573 bool
 574 brw_is_query_pipelined(struct brw_query_object *query)
 575 {
 576    switch (query->Base.Target) {
 577    case GL_TIMESTAMP:
 578    case GL_TIME_ELAPSED:
 579    case GL_ANY_SAMPLES_PASSED:
 580    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 581    case GL_SAMPLES_PASSED_ARB:
 582       return true;
 583
 584    case GL_PRIMITIVES_GENERATED:
 585    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 586    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 587    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 588    case GL_VERTICES_SUBMITTED_ARB:
 589    case GL_PRIMITIVES_SUBMITTED_ARB:
 590    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 591    case GL_GEOMETRY_SHADER_INVOCATIONS:
 592    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 593    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 594    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 595    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 596    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 597    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 598    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 599       return false;
 600
 601    default:
 602       unreachable("Unrecognized query target in is_query_pipelined()");
 603    }
 604 }
 605
 606 /* Initialize query object functions used on all generations. */
 607 void brw_init_common_queryobj_functions(struct dd_function_table *functions)
 608 {
 609    functions->NewQueryObject = brw_new_query_object;
 610    functions->DeleteQuery = brw_delete_query;
 611    functions->GetTimestamp = brw_get_timestamp;
 612 }
 613
 614 /* Initialize Gen4/5-specific query object functions. */
 615 void gen4_init_queryobj_functions(struct dd_function_table *functions)
 616 {
 617    functions->BeginQuery = brw_begin_query;
 618    functions->EndQuery = brw_end_query;
 619    functions->CheckQuery = brw_check_query;
 620    functions->WaitQuery = brw_wait_query;
 621    functions->QueryCounter = brw_query_counter;
 622 }