src/mesa/drivers/dri/i965/gen6_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  *    Kenneth Graunke <kenneth@whitecape.org>
  26  */
  27
  28 /** @file gen6_queryobj.c
  29  *
  30  * Support for query objects (GL_ARB_occlusion_query, GL_ARB_timer_query,
  31  * GL_EXT_transform_feedback, and friends) on platforms that support
  32  * hardware contexts (Gen6+).
  33  */
  34 #include "main/imports.h"
  35
  36 #include "brw_context.h"
  37 #include "brw_defines.h"
  38 #include "brw_state.h"
  39 #include "perf/gen_perf.h"
  40 #include "intel_batchbuffer.h"
  41 #include "intel_buffer_objects.h"
  42
  43 static inline void
  44 set_query_availability(struct brw_context *brw, struct brw_query_object *query,
  45                        bool available)
  46 {
  47    /* For platforms that support ARB_query_buffer_object, we write the
  48     * query availability for "pipelined" queries.
  49     *
  50     * Most counter snapshots are written by the command streamer, by
  51     * doing a CS stall and then MI_STORE_REGISTER_MEM.  For these
  52     * counters, the CS stall guarantees that the results will be
  53     * available when subsequent CS commands run.  So we don't need to
  54     * do any additional tracking.
  55     *
  56     * Other counters (occlusion queries and timestamp) are written by
  57     * PIPE_CONTROL, without a CS stall.  This means that we can't be
  58     * sure whether the writes have landed yet or not.  Performing a
  59     * PIPE_CONTROL with an immediate write will synchronize with
  60     * those earlier writes, so we write 1 when the value has landed.
  61     */
  62    if (brw->ctx.Extensions.ARB_query_buffer_object &&
  63        brw_is_query_pipelined(query)) {
  64       unsigned flags = PIPE_CONTROL_WRITE_IMMEDIATE;
  65
  66       if (available) {
  67          /* Order available *after* the query results. */
  68          flags |= PIPE_CONTROL_FLUSH_ENABLE;
  69       } else {
  70          /* Make it unavailable *before* any pipelined reads. */
  71          flags |= PIPE_CONTROL_CS_STALL;
  72       }
  73
  74       brw_emit_pipe_control_write(brw, flags,
  75                                   query->bo, 2 * sizeof(uint64_t),
  76                                   available);
  77    }
  78 }
  79
  80 static void
  81 write_primitives_generated(struct brw_context *brw,
  82                            struct brw_bo *query_bo, int stream, int idx)
  83 {
  84    const struct gen_device_info *devinfo = &brw->screen->devinfo;
  85
  86    brw_emit_mi_flush(brw);
  87
  88    if (devinfo->gen >= 7 && stream > 0) {
  89       brw_store_register_mem64(brw, query_bo,
  90                                GEN7_SO_PRIM_STORAGE_NEEDED(stream),
  91                                idx * sizeof(uint64_t));
  92    } else {
  93       brw_store_register_mem64(brw, query_bo, CL_INVOCATION_COUNT,
  94                                idx * sizeof(uint64_t));
  95    }
  96 }
  97
  98 static void
  99 write_xfb_primitives_written(struct brw_context *brw,
 100                              struct brw_bo *bo, int stream, int idx)
 101 {
 102    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 103
 104    brw_emit_mi_flush(brw);
 105
 106    if (devinfo->gen >= 7) {
 107       brw_store_register_mem64(brw, bo, GEN7_SO_NUM_PRIMS_WRITTEN(stream),
 108                                idx * sizeof(uint64_t));
 109    } else {
 110       brw_store_register_mem64(brw, bo, GEN6_SO_NUM_PRIMS_WRITTEN,
 111                                idx * sizeof(uint64_t));
 112    }
 113 }
 114
 115 static void
 116 write_xfb_overflow_streams(struct gl_context *ctx,
 117                            struct brw_bo *bo, int stream, int count,
 118                            int idx)
 119 {
 120    struct brw_context *brw = brw_context(ctx);
 121    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 122
 123    brw_emit_mi_flush(brw);
 124
 125    for (int i = 0; i < count; i++) {
 126       int w_idx = 4 * i + idx;
 127       int g_idx = 4 * i + idx + 2;
 128
 129       if (devinfo->gen >= 7) {
 130          brw_store_register_mem64(brw, bo,
 131                                   GEN7_SO_NUM_PRIMS_WRITTEN(stream + i),
 132                                   g_idx * sizeof(uint64_t));
 133          brw_store_register_mem64(brw, bo,
 134                                   GEN7_SO_PRIM_STORAGE_NEEDED(stream + i),
 135                                   w_idx * sizeof(uint64_t));
 136       } else {
 137          brw_store_register_mem64(brw, bo,
 138                                   GEN6_SO_NUM_PRIMS_WRITTEN,
 139                                   g_idx * sizeof(uint64_t));
 140          brw_store_register_mem64(brw, bo,
 141                                   GEN6_SO_PRIM_STORAGE_NEEDED,
 142                                   w_idx * sizeof(uint64_t));
 143       }
 144    }
 145 }
 146
 147 static bool
 148 check_xfb_overflow_streams(uint64_t *results, int count)
 149 {
 150    bool overflow = false;
 151
 152    for (int i = 0; i < count; i++) {
 153       uint64_t *result_i = &results[4 * i];
 154
 155       if ((result_i[3] - result_i[2]) != (result_i[1] - result_i[0])) {
 156          overflow = true;
 157          break;
 158       }
 159    }
 160
 161    return overflow;
 162 }
 163
 164 static inline int
 165 pipeline_target_to_index(int target)
 166 {
 167    if (target == GL_GEOMETRY_SHADER_INVOCATIONS)
 168       return MAX_PIPELINE_STATISTICS - 1;
 169    else
 170       return target - GL_VERTICES_SUBMITTED_ARB;
 171 }
 172
 173 static void
 174 emit_pipeline_stat(struct brw_context *brw, struct brw_bo *bo,
 175                    int stream, int target, int idx)
 176 {
 177    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 178
 179    /* One source of confusion is the tessellation shader statistics. The
 180     * hardware has no statistics specific to the TE unit. Ideally we could have
 181     * the HS primitives for TESS_CONTROL_SHADER_PATCHES_ARB, and the DS
 182     * invocations as the register for TESS_CONTROL_SHADER_PATCHES_ARB.
 183     * Unfortunately we don't have HS primitives, we only have HS invocations.
 184     */
 185
 186    /* Everything except GEOMETRY_SHADER_INVOCATIONS can be kept in a simple
 187     * lookup table
 188     */
 189    static const uint32_t target_to_register[] = {
 190       IA_VERTICES_COUNT,   /* VERTICES_SUBMITTED */
 191       IA_PRIMITIVES_COUNT, /* PRIMITIVES_SUBMITTED */
 192       VS_INVOCATION_COUNT, /* VERTEX_SHADER_INVOCATIONS */
 193       HS_INVOCATION_COUNT, /* TESS_CONTROL_SHADER_PATCHES */
 194       DS_INVOCATION_COUNT, /* TESS_EVALUATION_SHADER_INVOCATIONS */
 195       GS_PRIMITIVES_COUNT, /* GEOMETRY_SHADER_PRIMITIVES_EMITTED */
 196       PS_INVOCATION_COUNT, /* FRAGMENT_SHADER_INVOCATIONS */
 197       CS_INVOCATION_COUNT, /* COMPUTE_SHADER_INVOCATIONS */
 198       CL_INVOCATION_COUNT, /* CLIPPING_INPUT_PRIMITIVES */
 199       CL_PRIMITIVES_COUNT, /* CLIPPING_OUTPUT_PRIMITIVES */
 200       GS_INVOCATION_COUNT /* This one is special... */
 201    };
 202    STATIC_ASSERT(ARRAY_SIZE(target_to_register) == MAX_PIPELINE_STATISTICS);
 203    uint32_t reg = target_to_register[pipeline_target_to_index(target)];
 204    /* Gen6 GS code counts full primitives, that is, it won't count individual
 205     * triangles in a triangle strip. Use CL_INVOCATION_COUNT for that.
 206     */
 207    if (devinfo->gen == 6 && target == GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB)
 208       reg = CL_INVOCATION_COUNT;
 209    assert(reg != 0);
 210
 211    /* Emit a flush to make sure various parts of the pipeline are complete and
 212     * we get an accurate value
 213     */
 214    brw_emit_mi_flush(brw);
 215
 216    brw_store_register_mem64(brw, bo, reg, idx * sizeof(uint64_t));
 217 }
 218
 219
 220 /**
 221  * Wait on the query object's BO and calculate the final result.
 222  */
 223 static void
 224 gen6_queryobj_get_results(struct gl_context *ctx,
 225                           struct brw_query_object *query)
 226 {
 227    struct brw_context *brw = brw_context(ctx);
 228    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 229
 230    if (query->bo == NULL)
 231       return;
 232
 233    uint64_t *results = brw_bo_map(brw, query->bo, MAP_READ);
 234    switch (query->Base.Target) {
 235    case GL_TIME_ELAPSED:
 236       /* The query BO contains the starting and ending timestamps.
 237        * Subtract the two and convert to nanoseconds.
 238        */
 239       query->Base.Result = brw_raw_timestamp_delta(brw, results[0], results[1]);
 240       query->Base.Result = gen_device_info_timebase_scale(devinfo, query->Base.Result);
 241       break;
 242
 243    case GL_TIMESTAMP:
 244       /* The query BO contains a single timestamp value in results[0]. */
 245       query->Base.Result = gen_device_info_timebase_scale(devinfo, results[0]);
 246
 247       /* Ensure the scaled timestamp overflows according to
 248        * GL_QUERY_COUNTER_BITS
 249        */
 250       query->Base.Result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 251       break;
 252
 253    case GL_SAMPLES_PASSED_ARB:
 254       /* We need to use += rather than = here since some BLT-based operations
 255        * may have added additional samples to our occlusion query value.
 256        */
 257       query->Base.Result += results[1] - results[0];
 258       break;
 259
 260    case GL_ANY_SAMPLES_PASSED:
 261    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 262       if (results[0] != results[1])
 263          query->Base.Result = true;
 264       break;
 265
 266    case GL_PRIMITIVES_GENERATED:
 267    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 268    case GL_VERTICES_SUBMITTED_ARB:
 269    case GL_PRIMITIVES_SUBMITTED_ARB:
 270    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 271    case GL_GEOMETRY_SHADER_INVOCATIONS:
 272    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 273    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 274    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 275    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 276    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 277    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 278       query->Base.Result = results[1] - results[0];
 279       break;
 280
 281    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 282       query->Base.Result = check_xfb_overflow_streams(results, 1);
 283       break;
 284
 285    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 286       query->Base.Result = check_xfb_overflow_streams(results, MAX_VERTEX_STREAMS);
 287       break;
 288
 289    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 290       query->Base.Result = (results[1] - results[0]);
 291       /* Implement the "WaDividePSInvocationCountBy4:HSW,BDW" workaround:
 292        * "Invocation counter is 4 times actual.  WA: SW to divide HW reported
 293        *  PS Invocations value by 4."
 294        *
 295        * Prior to Haswell, invocation count was counted by the WM, and it
 296        * buggily counted invocations in units of subspans (2x2 unit). To get the
 297        * correct value, the CS multiplied this by 4. With HSW the logic moved,
 298        * and correctly emitted the number of pixel shader invocations, but,
 299        * whomever forgot to undo the multiply by 4.
 300        */
 301       if (devinfo->gen == 8 || devinfo->is_haswell)
 302          query->Base.Result /= 4;
 303       break;
 304
 305    default:
 306       unreachable("Unrecognized query target in brw_queryobj_get_results()");
 307    }
 308    brw_bo_unmap(query->bo);
 309
 310    /* Now that we've processed the data stored in the query's buffer object,
 311     * we can release it.
 312     */
 313    brw_bo_unreference(query->bo);
 314    query->bo = NULL;
 315
 316    query->Base.Ready = true;
 317 }
 318
 319 /**
 320  * Driver hook for glBeginQuery().
 321  *
 322  * Initializes driver structures and emits any GPU commands required to begin
 323  * recording data for the query.
 324  */
 325 static void
 326 gen6_begin_query(struct gl_context *ctx, struct gl_query_object *q)
 327 {
 328    struct brw_context *brw = brw_context(ctx);
 329    struct brw_query_object *query = (struct brw_query_object *)q;
 330
 331    /* Since we're starting a new query, we need to throw away old results. */
 332    brw_bo_unreference(query->bo);
 333    query->bo =
 334       brw_bo_alloc(brw->bufmgr, "query results", 4096, BRW_MEMZONE_OTHER);
 335
 336    /* For ARB_query_buffer_object: The result is not available */
 337    set_query_availability(brw, query, false);
 338
 339    switch (query->Base.Target) {
 340    case GL_TIME_ELAPSED:
 341       /* For timestamp queries, we record the starting time right away so that
 342        * we measure the full time between BeginQuery and EndQuery.  There's
 343        * some debate about whether this is the right thing to do.  Our decision
 344        * is based on the following text from the ARB_timer_query extension:
 345        *
 346        * "(5) Should the extension measure total time elapsed between the full
 347        *      completion of the BeginQuery and EndQuery commands, or just time
 348        *      spent in the graphics library?
 349        *
 350        *  RESOLVED:  This extension will measure the total time elapsed
 351        *  between the full completion of these commands.  Future extensions
 352        *  may implement a query to determine time elapsed at different stages
 353        *  of the graphics pipeline."
 354        *
 355        * We write a starting timestamp now (at index 0).  At EndQuery() time,
 356        * we'll write a second timestamp (at index 1), and subtract the two to
 357        * obtain the time elapsed.  Notably, this includes time elapsed while
 358        * the system was doing other work, such as running other applications.
 359        */
 360       brw_write_timestamp(brw, query->bo, 0);
 361       break;
 362
 363    case GL_ANY_SAMPLES_PASSED:
 364    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 365    case GL_SAMPLES_PASSED_ARB:
 366       brw_write_depth_count(brw, query->bo, 0);
 367       break;
 368
 369    case GL_PRIMITIVES_GENERATED:
 370       write_primitives_generated(brw, query->bo, query->Base.Stream, 0);
 371       if (query->Base.Stream == 0)
 372          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 373       break;
 374
 375    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 376       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 0);
 377       break;
 378
 379    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 380       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 0);
 381       break;
 382
 383    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 384       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 0);
 385       break;
 386
 387    case GL_VERTICES_SUBMITTED_ARB:
 388    case GL_PRIMITIVES_SUBMITTED_ARB:
 389    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 390    case GL_GEOMETRY_SHADER_INVOCATIONS:
 391    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 392    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 393    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 394    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 395    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 396    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 397    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 398       emit_pipeline_stat(brw, query->bo, query->Base.Stream, query->Base.Target, 0);
 399       break;
 400
 401    default:
 402       unreachable("Unrecognized query target in brw_begin_query()");
 403    }
 404 }
 405
 406 /**
 407  * Driver hook for glEndQuery().
 408  *
 409  * Emits GPU commands to record a final query value, ending any data capturing.
 410  * However, the final result isn't necessarily available until the GPU processes
 411  * those commands.  brw_queryobj_get_results() processes the captured data to
 412  * produce the final result.
 413  */
 414 static void
 415 gen6_end_query(struct gl_context *ctx, struct gl_query_object *q)
 416 {
 417    struct brw_context *brw = brw_context(ctx);
 418    struct brw_query_object *query = (struct brw_query_object *)q;
 419
 420    switch (query->Base.Target) {
 421    case GL_TIME_ELAPSED:
 422       brw_write_timestamp(brw, query->bo, 1);
 423       break;
 424
 425    case GL_ANY_SAMPLES_PASSED:
 426    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 427    case GL_SAMPLES_PASSED_ARB:
 428       brw_write_depth_count(brw, query->bo, 1);
 429       break;
 430
 431    case GL_PRIMITIVES_GENERATED:
 432       write_primitives_generated(brw, query->bo, query->Base.Stream, 1);
 433       if (query->Base.Stream == 0)
 434          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 435       break;
 436
 437    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 438       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 1);
 439       break;
 440
 441    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 442       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 1);
 443       break;
 444
 445    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 446       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 1);
 447       break;
 448
 449       /* calculate overflow here */
 450    case GL_VERTICES_SUBMITTED_ARB:
 451    case GL_PRIMITIVES_SUBMITTED_ARB:
 452    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 453    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 454    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 455    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 456    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 457    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 458    case GL_GEOMETRY_SHADER_INVOCATIONS:
 459    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 460    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 461       emit_pipeline_stat(brw, query->bo,
 462                          query->Base.Stream, query->Base.Target, 1);
 463       break;
 464
 465    default:
 466       unreachable("Unrecognized query target in brw_end_query()");
 467    }
 468
 469    /* The current batch contains the commands to handle EndQuery(),
 470     * but they won't actually execute until it is flushed.
 471     */
 472    query->flushed = false;
 473
 474    /* For ARB_query_buffer_object: The result is now available */
 475    set_query_availability(brw, query, true);
 476 }
 477
 478 /**
 479  * Flush the batch if it still references the query object BO.
 480  */
 481 static void
 482 flush_batch_if_needed(struct brw_context *brw, struct brw_query_object *query)
 483 {
 484    /* If the batch doesn't reference the BO, it must have been flushed
 485     * (for example, due to being full).  Record that it's been flushed.
 486     */
 487    query->flushed = query->flushed ||
 488                     !brw_batch_references(&brw->batch, query->bo);
 489
 490    if (!query->flushed)
 491       intel_batchbuffer_flush(brw);
 492 }
 493
 494 /**
 495  * The WaitQuery() driver hook.
 496  *
 497  * Wait for a query result to become available and return it.  This is the
 498  * backing for glGetQueryObjectiv() with the GL_QUERY_RESULT pname.
 499  */
 500 static void gen6_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 501 {
 502    struct brw_context *brw = brw_context(ctx);
 503    struct brw_query_object *query = (struct brw_query_object *)q;
 504
 505    /* If the application has requested the query result, but this batch is
 506     * still contributing to it, flush it now to finish that work so the
 507     * result will become available (eventually).
 508     */
 509    flush_batch_if_needed(brw, query);
 510
 511    gen6_queryobj_get_results(ctx, query);
 512 }
 513
 514 /**
 515  * The CheckQuery() driver hook.
 516  *
 517  * Checks whether a query result is ready yet.  If not, flushes.
 518  * This is the backing for glGetQueryObjectiv()'s QUERY_RESULT_AVAILABLE pname.
 519  */
 520 static void gen6_check_query(struct gl_context *ctx, struct gl_query_object *q)
 521 {
 522    struct brw_context *brw = brw_context(ctx);
 523    struct brw_query_object *query = (struct brw_query_object *)q;
 524
 525    /* If query->bo is NULL, we've already gathered the results - this is a
 526     * redundant CheckQuery call.  Ignore it.
 527     */
 528    if (query->bo == NULL)
 529       return;
 530
 531    /* From the GL_ARB_occlusion_query spec:
 532     *
 533     *     "Instead of allowing for an infinite loop, performing a
 534     *      QUERY_RESULT_AVAILABLE_ARB will perform a flush if the result is
 535     *      not ready yet on the first time it is queried.  This ensures that
 536     *      the async query will return true in finite time.
 537     */
 538    flush_batch_if_needed(brw, query);
 539
 540    if (!brw_bo_busy(query->bo)) {
 541       gen6_queryobj_get_results(ctx, query);
 542    }
 543 }
 544
 545 static void
 546 gen6_query_counter(struct gl_context *ctx, struct gl_query_object *q)
 547 {
 548    struct brw_context *brw = brw_context(ctx);
 549    struct brw_query_object *query = (struct brw_query_object *)q;
 550    brw_query_counter(ctx, q);
 551    set_query_availability(brw, query, true);
 552 }
 553
 554 /* Initialize Gen6+-specific query object functions. */
 555 void gen6_init_queryobj_functions(struct dd_function_table *functions)
 556 {
 557    functions->BeginQuery = gen6_begin_query;
 558    functions->EndQuery = gen6_end_query;
 559    functions->CheckQuery = gen6_check_query;
 560    functions->WaitQuery = gen6_wait_query;
 561    functions->QueryCounter = gen6_query_counter;
 562 }