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 "intel_batchbuffer.h"
  40 #include "intel_buffer_objects.h"
  41
  42 static inline void
  43 set_query_availability(struct brw_context *brw, struct brw_query_object *query,
  44                        bool available)
  45 {
  46    /* For platforms that support ARB_query_buffer_object, we write the
  47     * query availability for "pipelined" queries.
  48     *
  49     * Most counter snapshots are written by the command streamer, by
  50     * doing a CS stall and then MI_STORE_REGISTER_MEM.  For these
  51     * counters, the CS stall guarantees that the results will be
  52     * available when subsequent CS commands run.  So we don't need to
  53     * do any additional tracking.
  54     *
  55     * Other counters (occlusion queries and timestamp) are written by
  56     * PIPE_CONTROL, without a CS stall.  This means that we can't be
  57     * sure whether the writes have landed yet or not.  Performing a
  58     * PIPE_CONTROL with an immediate write will synchronize with
  59     * those earlier writes, so we write 1 when the value has landed.
  60     */
  61    if (brw->ctx.Extensions.ARB_query_buffer_object &&
  62        brw_is_query_pipelined(query)) {
  63       unsigned flags = PIPE_CONTROL_WRITE_IMMEDIATE;
  64
  65       if (available) {
  66          /* Order available *after* the query results. */
  67          flags |= PIPE_CONTROL_FLUSH_ENABLE;
  68       } else {
  69          /* Make it unavailable *before* any pipelined reads. */
  70          flags |= PIPE_CONTROL_CS_STALL;
  71       }
  72
  73       brw_emit_pipe_control_write(brw, flags,
  74                                   query->bo, 2 * sizeof(uint64_t),
  75                                   available);
  76    }
  77 }
  78
  79 static void
  80 write_primitives_generated(struct brw_context *brw,
  81                            struct brw_bo *query_bo, int stream, int idx)
  82 {
  83    const struct gen_device_info *devinfo = &brw->screen->devinfo;
  84
  85    brw_emit_mi_flush(brw);
  86
  87    if (devinfo->gen >= 7 && stream > 0) {
  88       brw_store_register_mem64(brw, query_bo,
  89                                GEN7_SO_PRIM_STORAGE_NEEDED(stream),
  90                                idx * sizeof(uint64_t));
  91    } else {
  92       brw_store_register_mem64(brw, query_bo, CL_INVOCATION_COUNT,
  93                                idx * sizeof(uint64_t));
  94    }
  95 }
  96
  97 static void
  98 write_xfb_primitives_written(struct brw_context *brw,
  99                              struct brw_bo *bo, int stream, int idx)
 100 {
 101    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 102
 103    brw_emit_mi_flush(brw);
 104
 105    if (devinfo->gen >= 7) {
 106       brw_store_register_mem64(brw, bo, GEN7_SO_NUM_PRIMS_WRITTEN(stream),
 107                                idx * sizeof(uint64_t));
 108    } else {
 109       brw_store_register_mem64(brw, bo, GEN6_SO_NUM_PRIMS_WRITTEN,
 110                                idx * sizeof(uint64_t));
 111    }
 112 }
 113
 114 static void
 115 write_xfb_overflow_streams(struct gl_context *ctx,
 116                            struct brw_bo *bo, int stream, int count,
 117                            int idx)
 118 {
 119    struct brw_context *brw = brw_context(ctx);
 120    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 121
 122    brw_emit_mi_flush(brw);
 123
 124    for (int i = 0; i < count; i++) {
 125       int w_idx = 4 * i + idx;
 126       int g_idx = 4 * i + idx + 2;
 127
 128       if (devinfo->gen >= 7) {
 129          brw_store_register_mem64(brw, bo,
 130                                   GEN7_SO_NUM_PRIMS_WRITTEN(stream + i),
 131                                   g_idx * sizeof(uint64_t));
 132          brw_store_register_mem64(brw, bo,
 133                                   GEN7_SO_PRIM_STORAGE_NEEDED(stream + i),
 134                                   w_idx * sizeof(uint64_t));
 135       } else {
 136          brw_store_register_mem64(brw, bo,
 137                                   GEN6_SO_NUM_PRIMS_WRITTEN,
 138                                   g_idx * sizeof(uint64_t));
 139          brw_store_register_mem64(brw, bo,
 140                                   GEN6_SO_PRIM_STORAGE_NEEDED,
 141                                   w_idx * sizeof(uint64_t));
 142       }
 143    }
 144 }
 145
 146 static bool
 147 check_xfb_overflow_streams(uint64_t *results, int count)
 148 {
 149    bool overflow = false;
 150
 151    for (int i = 0; i < count; i++) {
 152       uint64_t *result_i = &results[4 * i];
 153
 154       if ((result_i[3] - result_i[2]) != (result_i[1] - result_i[0])) {
 155          overflow = true;
 156          break;
 157       }
 158    }
 159
 160    return overflow;
 161 }
 162
 163 static inline int
 164 pipeline_target_to_index(int target)
 165 {
 166    if (target == GL_GEOMETRY_SHADER_INVOCATIONS)
 167       return MAX_PIPELINE_STATISTICS - 1;
 168    else
 169       return target - GL_VERTICES_SUBMITTED_ARB;
 170 }
 171
 172 static void
 173 emit_pipeline_stat(struct brw_context *brw, struct brw_bo *bo,
 174                    int stream, int target, int idx)
 175 {
 176    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 177
 178    /* One source of confusion is the tessellation shader statistics. The
 179     * hardware has no statistics specific to the TE unit. Ideally we could have
 180     * the HS primitives for TESS_CONTROL_SHADER_PATCHES_ARB, and the DS
 181     * invocations as the register for TESS_CONTROL_SHADER_PATCHES_ARB.
 182     * Unfortunately we don't have HS primitives, we only have HS invocations.
 183     */
 184
 185    /* Everything except GEOMETRY_SHADER_INVOCATIONS can be kept in a simple
 186     * lookup table
 187     */
 188    static const uint32_t target_to_register[] = {
 189       IA_VERTICES_COUNT,   /* VERTICES_SUBMITTED */
 190       IA_PRIMITIVES_COUNT, /* PRIMITIVES_SUBMITTED */
 191       VS_INVOCATION_COUNT, /* VERTEX_SHADER_INVOCATIONS */
 192       HS_INVOCATION_COUNT, /* TESS_CONTROL_SHADER_PATCHES */
 193       DS_INVOCATION_COUNT, /* TESS_EVALUATION_SHADER_INVOCATIONS */
 194       GS_PRIMITIVES_COUNT, /* GEOMETRY_SHADER_PRIMITIVES_EMITTED */
 195       PS_INVOCATION_COUNT, /* FRAGMENT_SHADER_INVOCATIONS */
 196       CS_INVOCATION_COUNT, /* COMPUTE_SHADER_INVOCATIONS */
 197       CL_INVOCATION_COUNT, /* CLIPPING_INPUT_PRIMITIVES */
 198       CL_PRIMITIVES_COUNT, /* CLIPPING_OUTPUT_PRIMITIVES */
 199       GS_INVOCATION_COUNT /* This one is special... */
 200    };
 201    STATIC_ASSERT(ARRAY_SIZE(target_to_register) == MAX_PIPELINE_STATISTICS);
 202    uint32_t reg = target_to_register[pipeline_target_to_index(target)];
 203    /* Gen6 GS code counts full primitives, that is, it won't count individual
 204     * triangles in a triangle strip. Use CL_INVOCATION_COUNT for that.
 205     */
 206    if (devinfo->gen == 6 && target == GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB)
 207       reg = CL_INVOCATION_COUNT;
 208    assert(reg != 0);
 209
 210    /* Emit a flush to make sure various parts of the pipeline are complete and
 211     * we get an accurate value
 212     */
 213    brw_emit_mi_flush(brw);
 214
 215    brw_store_register_mem64(brw, bo, reg, idx * sizeof(uint64_t));
 216 }
 217
 218
 219 /**
 220  * Wait on the query object's BO and calculate the final result.
 221  */
 222 static void
 223 gen6_queryobj_get_results(struct gl_context *ctx,
 224                           struct brw_query_object *query)
 225 {
 226    struct brw_context *brw = brw_context(ctx);
 227    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 228
 229    if (query->bo == NULL)
 230       return;
 231
 232    uint64_t *results = brw_bo_map(brw, query->bo, MAP_READ);
 233    switch (query->Base.Target) {
 234    case GL_TIME_ELAPSED:
 235       /* The query BO contains the starting and ending timestamps.
 236        * Subtract the two and convert to nanoseconds.
 237        */
 238       query->Base.Result = brw_raw_timestamp_delta(brw, results[0], results[1]);
 239       query->Base.Result = brw_timebase_scale(brw, query->Base.Result);
 240       break;
 241
 242    case GL_TIMESTAMP:
 243       /* The query BO contains a single timestamp value in results[0]. */
 244       query->Base.Result = brw_timebase_scale(brw, results[0]);
 245
 246       /* Ensure the scaled timestamp overflows according to
 247        * GL_QUERY_COUNTER_BITS
 248        */
 249       query->Base.Result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 250       break;
 251
 252    case GL_SAMPLES_PASSED_ARB:
 253       /* We need to use += rather than = here since some BLT-based operations
 254        * may have added additional samples to our occlusion query value.
 255        */
 256       query->Base.Result += results[1] - results[0];
 257       break;
 258
 259    case GL_ANY_SAMPLES_PASSED:
 260    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 261       if (results[0] != results[1])
 262          query->Base.Result = true;
 263       break;
 264
 265    case GL_PRIMITIVES_GENERATED:
 266    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 267    case GL_VERTICES_SUBMITTED_ARB:
 268    case GL_PRIMITIVES_SUBMITTED_ARB:
 269    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 270    case GL_GEOMETRY_SHADER_INVOCATIONS:
 271    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 272    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 273    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 274    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 275    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 276    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 277       query->Base.Result = results[1] - results[0];
 278       break;
 279
 280    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 281       query->Base.Result = check_xfb_overflow_streams(results, 1);
 282       break;
 283
 284    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 285       query->Base.Result = check_xfb_overflow_streams(results, MAX_VERTEX_STREAMS);
 286       break;
 287
 288    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 289       query->Base.Result = (results[1] - results[0]);
 290       /* Implement the "WaDividePSInvocationCountBy4:HSW,BDW" workaround:
 291        * "Invocation counter is 4 times actual.  WA: SW to divide HW reported
 292        *  PS Invocations value by 4."
 293        *
 294        * Prior to Haswell, invocation count was counted by the WM, and it
 295        * buggily counted invocations in units of subspans (2x2 unit). To get the
 296        * correct value, the CS multiplied this by 4. With HSW the logic moved,
 297        * and correctly emitted the number of pixel shader invocations, but,
 298        * whomever forgot to undo the multiply by 4.
 299        */
 300       if (devinfo->gen == 8 || devinfo->is_haswell)
 301          query->Base.Result /= 4;
 302       break;
 303
 304    default:
 305       unreachable("Unrecognized query target in brw_queryobj_get_results()");
 306    }
 307    brw_bo_unmap(query->bo);
 308
 309    /* Now that we've processed the data stored in the query's buffer object,
 310     * we can release it.
 311     */
 312    brw_bo_unreference(query->bo);
 313    query->bo = NULL;
 314
 315    query->Base.Ready = true;
 316 }
 317
 318 /**
 319  * Driver hook for glBeginQuery().
 320  *
 321  * Initializes driver structures and emits any GPU commands required to begin
 322  * recording data for the query.
 323  */
 324 static void
 325 gen6_begin_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
 330    /* Since we're starting a new query, we need to throw away old results. */
 331    brw_bo_unreference(query->bo);
 332    query->bo = brw_bo_alloc(brw->bufmgr, "query results", 4096, 4096);
 333
 334    /* For ARB_query_buffer_object: The result is not available */
 335    set_query_availability(brw, query, false);
 336
 337    switch (query->Base.Target) {
 338    case GL_TIME_ELAPSED:
 339       /* For timestamp queries, we record the starting time right away so that
 340        * we measure the full time between BeginQuery and EndQuery.  There's
 341        * some debate about whether this is the right thing to do.  Our decision
 342        * is based on the following text from the ARB_timer_query extension:
 343        *
 344        * "(5) Should the extension measure total time elapsed between the full
 345        *      completion of the BeginQuery and EndQuery commands, or just time
 346        *      spent in the graphics library?
 347        *
 348        *  RESOLVED:  This extension will measure the total time elapsed
 349        *  between the full completion of these commands.  Future extensions
 350        *  may implement a query to determine time elapsed at different stages
 351        *  of the graphics pipeline."
 352        *
 353        * We write a starting timestamp now (at index 0).  At EndQuery() time,
 354        * we'll write a second timestamp (at index 1), and subtract the two to
 355        * obtain the time elapsed.  Notably, this includes time elapsed while
 356        * the system was doing other work, such as running other applications.
 357        */
 358       brw_write_timestamp(brw, query->bo, 0);
 359       break;
 360
 361    case GL_ANY_SAMPLES_PASSED:
 362    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 363    case GL_SAMPLES_PASSED_ARB:
 364       brw_write_depth_count(brw, query->bo, 0);
 365       break;
 366
 367    case GL_PRIMITIVES_GENERATED:
 368       write_primitives_generated(brw, query->bo, query->Base.Stream, 0);
 369       if (query->Base.Stream == 0)
 370          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 371       break;
 372
 373    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 374       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 0);
 375       break;
 376
 377    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 378       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 0);
 379       break;
 380
 381    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 382       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 0);
 383       break;
 384
 385    case GL_VERTICES_SUBMITTED_ARB:
 386    case GL_PRIMITIVES_SUBMITTED_ARB:
 387    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 388    case GL_GEOMETRY_SHADER_INVOCATIONS:
 389    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 390    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 391    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 392    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 393    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 394    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 395    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 396       emit_pipeline_stat(brw, query->bo, query->Base.Stream, query->Base.Target, 0);
 397       break;
 398
 399    default:
 400       unreachable("Unrecognized query target in brw_begin_query()");
 401    }
 402 }
 403
 404 /**
 405  * Driver hook for glEndQuery().
 406  *
 407  * Emits GPU commands to record a final query value, ending any data capturing.
 408  * However, the final result isn't necessarily available until the GPU processes
 409  * those commands.  brw_queryobj_get_results() processes the captured data to
 410  * produce the final result.
 411  */
 412 static void
 413 gen6_end_query(struct gl_context *ctx, struct gl_query_object *q)
 414 {
 415    struct brw_context *brw = brw_context(ctx);
 416    struct brw_query_object *query = (struct brw_query_object *)q;
 417
 418    switch (query->Base.Target) {
 419    case GL_TIME_ELAPSED:
 420       brw_write_timestamp(brw, query->bo, 1);
 421       break;
 422
 423    case GL_ANY_SAMPLES_PASSED:
 424    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 425    case GL_SAMPLES_PASSED_ARB:
 426       brw_write_depth_count(brw, query->bo, 1);
 427       break;
 428
 429    case GL_PRIMITIVES_GENERATED:
 430       write_primitives_generated(brw, query->bo, query->Base.Stream, 1);
 431       if (query->Base.Stream == 0)
 432          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 433       break;
 434
 435    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 436       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 1);
 437       break;
 438
 439    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 440       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 1);
 441       break;
 442
 443    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 444       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 1);
 445       break;
 446
 447       /* calculate overflow here */
 448    case GL_VERTICES_SUBMITTED_ARB:
 449    case GL_PRIMITIVES_SUBMITTED_ARB:
 450    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 451    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 452    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 453    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 454    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 455    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 456    case GL_GEOMETRY_SHADER_INVOCATIONS:
 457    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 458    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 459       emit_pipeline_stat(brw, query->bo,
 460                          query->Base.Stream, query->Base.Target, 1);
 461       break;
 462
 463    default:
 464       unreachable("Unrecognized query target in brw_end_query()");
 465    }
 466
 467    /* The current batch contains the commands to handle EndQuery(),
 468     * but they won't actually execute until it is flushed.
 469     */
 470    query->flushed = false;
 471
 472    /* For ARB_query_buffer_object: The result is now available */
 473    set_query_availability(brw, query, true);
 474 }
 475
 476 /**
 477  * Flush the batch if it still references the query object BO.
 478  */
 479 static void
 480 flush_batch_if_needed(struct brw_context *brw, struct brw_query_object *query)
 481 {
 482    /* If the batch doesn't reference the BO, it must have been flushed
 483     * (for example, due to being full).  Record that it's been flushed.
 484     */
 485    query->flushed = query->flushed ||
 486                     !brw_batch_references(&brw->batch, query->bo);
 487
 488    if (!query->flushed)
 489       intel_batchbuffer_flush(brw);
 490 }
 491
 492 /**
 493  * The WaitQuery() driver hook.
 494  *
 495  * Wait for a query result to become available and return it.  This is the
 496  * backing for glGetQueryObjectiv() with the GL_QUERY_RESULT pname.
 497  */
 498 static void gen6_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 499 {
 500    struct brw_context *brw = brw_context(ctx);
 501    struct brw_query_object *query = (struct brw_query_object *)q;
 502
 503    /* If the application has requested the query result, but this batch is
 504     * still contributing to it, flush it now to finish that work so the
 505     * result will become available (eventually).
 506     */
 507    flush_batch_if_needed(brw, query);
 508
 509    gen6_queryobj_get_results(ctx, query);
 510 }
 511
 512 /**
 513  * The CheckQuery() driver hook.
 514  *
 515  * Checks whether a query result is ready yet.  If not, flushes.
 516  * This is the backing for glGetQueryObjectiv()'s QUERY_RESULT_AVAILABLE pname.
 517  */
 518 static void gen6_check_query(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    /* If query->bo is NULL, we've already gathered the results - this is a
 524     * redundant CheckQuery call.  Ignore it.
 525     */
 526    if (query->bo == NULL)
 527       return;
 528
 529    /* From the GL_ARB_occlusion_query spec:
 530     *
 531     *     "Instead of allowing for an infinite loop, performing a
 532     *      QUERY_RESULT_AVAILABLE_ARB will perform a flush if the result is
 533     *      not ready yet on the first time it is queried.  This ensures that
 534     *      the async query will return true in finite time.
 535     */
 536    flush_batch_if_needed(brw, query);
 537
 538    if (!brw_bo_busy(query->bo)) {
 539       gen6_queryobj_get_results(ctx, query);
 540    }
 541 }
 542
 543 static void
 544 gen6_query_counter(struct gl_context *ctx, struct gl_query_object *q)
 545 {
 546    struct brw_context *brw = brw_context(ctx);
 547    struct brw_query_object *query = (struct brw_query_object *)q;
 548    brw_query_counter(ctx, q);
 549    set_query_availability(brw, query, true);
 550 }
 551
 552 /* Initialize Gen6+-specific query object functions. */
 553 void gen6_init_queryobj_functions(struct dd_function_table *functions)
 554 {
 555    functions->BeginQuery = gen6_begin_query;
 556    functions->EndQuery = gen6_end_query;
 557    functions->CheckQuery = gen6_check_query;
 558    functions->WaitQuery = gen6_wait_query;
 559    functions->QueryCounter = gen6_query_counter;
 560 }