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 "brw_context.h"
  35 #include "brw_defines.h"
  36 #include "brw_state.h"
  37 #include "perf/gen_perf_regs.h"
  38 #include "intel_batchbuffer.h"
  39 #include "intel_buffer_objects.h"
  40
  41 static inline void
  42 set_query_availability(struct brw_context *brw, struct brw_query_object *query,
  43                        bool available)
  44 {
  45    /* For platforms that support ARB_query_buffer_object, we write the
  46     * query availability for "pipelined" queries.
  47     *
  48     * Most counter snapshots are written by the command streamer, by
  49     * doing a CS stall and then MI_STORE_REGISTER_MEM.  For these
  50     * counters, the CS stall guarantees that the results will be
  51     * available when subsequent CS commands run.  So we don't need to
  52     * do any additional tracking.
  53     *
  54     * Other counters (occlusion queries and timestamp) are written by
  55     * PIPE_CONTROL, without a CS stall.  This means that we can't be
  56     * sure whether the writes have landed yet or not.  Performing a
  57     * PIPE_CONTROL with an immediate write will synchronize with
  58     * those earlier writes, so we write 1 when the value has landed.
  59     */
  60    if (brw->ctx.Extensions.ARB_query_buffer_object &&
  61        brw_is_query_pipelined(query)) {
  62       unsigned flags = PIPE_CONTROL_WRITE_IMMEDIATE;
  63
  64       if (available) {
  65          /* Order available *after* the query results. */
  66          flags |= PIPE_CONTROL_FLUSH_ENABLE;
  67       } else {
  68          /* Make it unavailable *before* any pipelined reads. */
  69          flags |= PIPE_CONTROL_CS_STALL;
  70       }
  71
  72       brw_emit_pipe_control_write(brw, flags,
  73                                   query->bo, 2 * sizeof(uint64_t),
  74                                   available);
  75    }
  76 }
  77
  78 static void
  79 write_primitives_generated(struct brw_context *brw,
  80                            struct brw_bo *query_bo, int stream, int idx)
  81 {
  82    const struct gen_device_info *devinfo = &brw->screen->devinfo;
  83
  84    brw_emit_mi_flush(brw);
  85
  86    if (devinfo->gen >= 7 && stream > 0) {
  87       brw_store_register_mem64(brw, query_bo,
  88                                GEN7_SO_PRIM_STORAGE_NEEDED(stream),
  89                                idx * sizeof(uint64_t));
  90    } else {
  91       brw_store_register_mem64(brw, query_bo, CL_INVOCATION_COUNT,
  92                                idx * sizeof(uint64_t));
  93    }
  94 }
  95
  96 static void
  97 write_xfb_primitives_written(struct brw_context *brw,
  98                              struct brw_bo *bo, int stream, int idx)
  99 {
 100    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 101
 102    brw_emit_mi_flush(brw);
 103
 104    if (devinfo->gen >= 7) {
 105       brw_store_register_mem64(brw, bo, GEN7_SO_NUM_PRIMS_WRITTEN(stream),
 106                                idx * sizeof(uint64_t));
 107    } else {
 108       brw_store_register_mem64(brw, bo, GEN6_SO_NUM_PRIMS_WRITTEN,
 109                                idx * sizeof(uint64_t));
 110    }
 111 }
 112
 113 static void
 114 write_xfb_overflow_streams(struct gl_context *ctx,
 115                            struct brw_bo *bo, int stream, int count,
 116                            int idx)
 117 {
 118    struct brw_context *brw = brw_context(ctx);
 119    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 120
 121    brw_emit_mi_flush(brw);
 122
 123    for (int i = 0; i < count; i++) {
 124       int w_idx = 4 * i + idx;
 125       int g_idx = 4 * i + idx + 2;
 126
 127       if (devinfo->gen >= 7) {
 128          brw_store_register_mem64(brw, bo,
 129                                   GEN7_SO_NUM_PRIMS_WRITTEN(stream + i),
 130                                   g_idx * sizeof(uint64_t));
 131          brw_store_register_mem64(brw, bo,
 132                                   GEN7_SO_PRIM_STORAGE_NEEDED(stream + i),
 133                                   w_idx * sizeof(uint64_t));
 134       } else {
 135          brw_store_register_mem64(brw, bo,
 136                                   GEN6_SO_NUM_PRIMS_WRITTEN,
 137                                   g_idx * sizeof(uint64_t));
 138          brw_store_register_mem64(brw, bo,
 139                                   GEN6_SO_PRIM_STORAGE_NEEDED,
 140                                   w_idx * sizeof(uint64_t));
 141       }
 142    }
 143 }
 144
 145 static bool
 146 check_xfb_overflow_streams(uint64_t *results, int count)
 147 {
 148    bool overflow = false;
 149
 150    for (int i = 0; i < count; i++) {
 151       uint64_t *result_i = &results[4 * i];
 152
 153       if ((result_i[3] - result_i[2]) != (result_i[1] - result_i[0])) {
 154          overflow = true;
 155          break;
 156       }
 157    }
 158
 159    return overflow;
 160 }
 161
 162 static inline int
 163 pipeline_target_to_index(int target)
 164 {
 165    if (target == GL_GEOMETRY_SHADER_INVOCATIONS)
 166       return MAX_PIPELINE_STATISTICS - 1;
 167    else
 168       return target - GL_VERTICES_SUBMITTED_ARB;
 169 }
 170
 171 static void
 172 emit_pipeline_stat(struct brw_context *brw, struct brw_bo *bo,
 173                    int stream, int target, int idx)
 174 {
 175    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 176
 177    /* One source of confusion is the tessellation shader statistics. The
 178     * hardware has no statistics specific to the TE unit. Ideally we could have
 179     * the HS primitives for TESS_CONTROL_SHADER_PATCHES_ARB, and the DS
 180     * invocations as the register for TESS_CONTROL_SHADER_PATCHES_ARB.
 181     * Unfortunately we don't have HS primitives, we only have HS invocations.
 182     */
 183
 184    /* Everything except GEOMETRY_SHADER_INVOCATIONS can be kept in a simple
 185     * lookup table
 186     */
 187    static const uint32_t target_to_register[] = {
 188       IA_VERTICES_COUNT,   /* VERTICES_SUBMITTED */
 189       IA_PRIMITIVES_COUNT, /* PRIMITIVES_SUBMITTED */
 190       VS_INVOCATION_COUNT, /* VERTEX_SHADER_INVOCATIONS */
 191       HS_INVOCATION_COUNT, /* TESS_CONTROL_SHADER_PATCHES */
 192       DS_INVOCATION_COUNT, /* TESS_EVALUATION_SHADER_INVOCATIONS */
 193       GS_PRIMITIVES_COUNT, /* GEOMETRY_SHADER_PRIMITIVES_EMITTED */
 194       PS_INVOCATION_COUNT, /* FRAGMENT_SHADER_INVOCATIONS */
 195       CS_INVOCATION_COUNT, /* COMPUTE_SHADER_INVOCATIONS */
 196       CL_INVOCATION_COUNT, /* CLIPPING_INPUT_PRIMITIVES */
 197       CL_PRIMITIVES_COUNT, /* CLIPPING_OUTPUT_PRIMITIVES */
 198       GS_INVOCATION_COUNT /* This one is special... */
 199    };
 200    STATIC_ASSERT(ARRAY_SIZE(target_to_register) == MAX_PIPELINE_STATISTICS);
 201    uint32_t reg = target_to_register[pipeline_target_to_index(target)];
 202    /* Gen6 GS code counts full primitives, that is, it won't count individual
 203     * triangles in a triangle strip. Use CL_INVOCATION_COUNT for that.
 204     */
 205    if (devinfo->gen == 6 && target == GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB)
 206       reg = CL_INVOCATION_COUNT;
 207    assert(reg != 0);
 208
 209    /* Emit a flush to make sure various parts of the pipeline are complete and
 210     * we get an accurate value
 211     */
 212    brw_emit_mi_flush(brw);
 213
 214    brw_store_register_mem64(brw, bo, reg, idx * sizeof(uint64_t));
 215 }
 216
 217
 218 /**
 219  * Wait on the query object's BO and calculate the final result.
 220  */
 221 static void
 222 gen6_queryobj_get_results(struct gl_context *ctx,
 223                           struct brw_query_object *query)
 224 {
 225    struct brw_context *brw = brw_context(ctx);
 226    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 227
 228    if (query->bo == NULL)
 229       return;
 230
 231    uint64_t *results = brw_bo_map(brw, query->bo, MAP_READ);
 232    switch (query->Base.Target) {
 233    case GL_TIME_ELAPSED:
 234       /* The query BO contains the starting and ending timestamps.
 235        * Subtract the two and convert to nanoseconds.
 236        */
 237       query->Base.Result = brw_raw_timestamp_delta(brw, results[0], results[1]);
 238       query->Base.Result = gen_device_info_timebase_scale(devinfo, query->Base.Result);
 239       break;
 240
 241    case GL_TIMESTAMP:
 242       /* The query BO contains a single timestamp value in results[0]. */
 243       query->Base.Result = gen_device_info_timebase_scale(devinfo, results[0]);
 244
 245       /* Ensure the scaled timestamp overflows according to
 246        * GL_QUERY_COUNTER_BITS
 247        */
 248       query->Base.Result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 249       break;
 250
 251    case GL_SAMPLES_PASSED_ARB:
 252       /* We need to use += rather than = here since some BLT-based operations
 253        * may have added additional samples to our occlusion query value.
 254        */
 255       query->Base.Result += results[1] - results[0];
 256       break;
 257
 258    case GL_ANY_SAMPLES_PASSED:
 259    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 260       if (results[0] != results[1])
 261          query->Base.Result = true;
 262       break;
 263
 264    case GL_PRIMITIVES_GENERATED:
 265    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 266    case GL_VERTICES_SUBMITTED_ARB:
 267    case GL_PRIMITIVES_SUBMITTED_ARB:
 268    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 269    case GL_GEOMETRY_SHADER_INVOCATIONS:
 270    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 271    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 272    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 273    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 274    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 275    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 276       query->Base.Result = results[1] - results[0];
 277       break;
 278
 279    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 280       query->Base.Result = check_xfb_overflow_streams(results, 1);
 281       break;
 282
 283    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 284       query->Base.Result = check_xfb_overflow_streams(results, MAX_VERTEX_STREAMS);
 285       break;
 286
 287    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 288       query->Base.Result = (results[1] - results[0]);
 289       /* Implement the "WaDividePSInvocationCountBy4:HSW,BDW" workaround:
 290        * "Invocation counter is 4 times actual.  WA: SW to divide HW reported
 291        *  PS Invocations value by 4."
 292        *
 293        * Prior to Haswell, invocation count was counted by the WM, and it
 294        * buggily counted invocations in units of subspans (2x2 unit). To get the
 295        * correct value, the CS multiplied this by 4. With HSW the logic moved,
 296        * and correctly emitted the number of pixel shader invocations, but,
 297        * whomever forgot to undo the multiply by 4.
 298        */
 299       if (devinfo->gen == 8 || devinfo->is_haswell)
 300          query->Base.Result /= 4;
 301       break;
 302
 303    default:
 304       unreachable("Unrecognized query target in brw_queryobj_get_results()");
 305    }
 306    brw_bo_unmap(query->bo);
 307
 308    /* Now that we've processed the data stored in the query's buffer object,
 309     * we can release it.
 310     */
 311    brw_bo_unreference(query->bo);
 312    query->bo = NULL;
 313
 314    query->Base.Ready = true;
 315 }
 316
 317 /**
 318  * Driver hook for glBeginQuery().
 319  *
 320  * Initializes driver structures and emits any GPU commands required to begin
 321  * recording data for the query.
 322  */
 323 static void
 324 gen6_begin_query(struct gl_context *ctx, struct gl_query_object *q)
 325 {
 326    struct brw_context *brw = brw_context(ctx);
 327    struct brw_query_object *query = (struct brw_query_object *)q;
 328
 329    /* Since we're starting a new query, we need to throw away old results. */
 330    brw_bo_unreference(query->bo);
 331    query->bo =
 332       brw_bo_alloc(brw->bufmgr, "query results", 4096, BRW_MEMZONE_OTHER);
 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 }