git.oblomov.eu Git - wine/blob - dlls/wined3d/query.c

   1 /*
   2  * Copyright 2005 Oliver Stieber
   3  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   4  * Copyright 2009-2010 Henri Verbeet for CodeWeavers.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24 #include "wined3d_private.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  27
  28 BOOL wined3d_event_query_supported(const struct wined3d_gl_info *gl_info)
  29 {
  30     return gl_info->supported[ARB_SYNC] || gl_info->supported[NV_FENCE] || gl_info->supported[APPLE_FENCE];
  31 }
  32
  33 void wined3d_event_query_destroy(struct wined3d_event_query *query)
  34 {
  35     if (query->context) context_free_event_query(query);
  36     HeapFree(GetProcessHeap(), 0, query);
  37 }
  38
  39 static enum wined3d_event_query_result wined3d_event_query_test(const struct wined3d_event_query *query,
  40         const struct wined3d_device *device)
  41 {
  42     struct wined3d_context *context;
  43     const struct wined3d_gl_info *gl_info;
  44     enum wined3d_event_query_result ret;
  45     BOOL fence_result;
  46
  47     TRACE("(%p) : device %p\n", query, device);
  48
  49     if (!query->context)
  50     {
  51         TRACE("Query not started\n");
  52         return WINED3D_EVENT_QUERY_NOT_STARTED;
  53     }
  54
  55     if (!query->context->gl_info->supported[ARB_SYNC] && query->context->tid != GetCurrentThreadId())
  56     {
  57         WARN("Event query tested from wrong thread\n");
  58         return WINED3D_EVENT_QUERY_WRONG_THREAD;
  59     }
  60
  61     context = context_acquire(device, query->context->current_rt);
  62     gl_info = context->gl_info;
  63
  64     ENTER_GL();
  65
  66     if (gl_info->supported[ARB_SYNC])
  67     {
  68         GLenum gl_ret = GL_EXTCALL(glClientWaitSync(query->object.sync, 0, 0));
  69         checkGLcall("glClientWaitSync");
  70
  71         switch (gl_ret)
  72         {
  73             case GL_ALREADY_SIGNALED:
  74             case GL_CONDITION_SATISFIED:
  75                 ret = WINED3D_EVENT_QUERY_OK;
  76                 break;
  77
  78             case GL_TIMEOUT_EXPIRED:
  79                 ret = WINED3D_EVENT_QUERY_WAITING;
  80                 break;
  81
  82             case GL_WAIT_FAILED:
  83             default:
  84                 ERR("glClientWaitSync returned %#x.\n", gl_ret);
  85                 ret = WINED3D_EVENT_QUERY_ERROR;
  86         }
  87     }
  88     else if (gl_info->supported[APPLE_FENCE])
  89     {
  90         fence_result = GL_EXTCALL(glTestFenceAPPLE(query->object.id));
  91         checkGLcall("glTestFenceAPPLE");
  92         if (fence_result) ret = WINED3D_EVENT_QUERY_OK;
  93         else ret = WINED3D_EVENT_QUERY_WAITING;
  94     }
  95     else if (gl_info->supported[NV_FENCE])
  96     {
  97         fence_result = GL_EXTCALL(glTestFenceNV(query->object.id));
  98         checkGLcall("glTestFenceNV");
  99         if (fence_result) ret = WINED3D_EVENT_QUERY_OK;
 100         else ret = WINED3D_EVENT_QUERY_WAITING;
 101     }
 102     else
 103     {
 104         ERR("Event query created despite lack of GL support\n");
 105         ret = WINED3D_EVENT_QUERY_ERROR;
 106     }
 107
 108     LEAVE_GL();
 109
 110     context_release(context);
 111     return ret;
 112 }
 113
 114 enum wined3d_event_query_result wined3d_event_query_finish(const struct wined3d_event_query *query,
 115         const struct wined3d_device *device)
 116 {
 117     struct wined3d_context *context;
 118     const struct wined3d_gl_info *gl_info;
 119     enum wined3d_event_query_result ret;
 120
 121     TRACE("(%p)\n", query);
 122
 123     if (!query->context)
 124     {
 125         TRACE("Query not started\n");
 126         return WINED3D_EVENT_QUERY_NOT_STARTED;
 127     }
 128     gl_info = query->context->gl_info;
 129
 130     if (query->context->tid != GetCurrentThreadId() && !gl_info->supported[ARB_SYNC])
 131     {
 132         /* A glFinish does not reliably wait for draws in other contexts. The caller has
 133          * to find its own way to cope with the thread switch
 134          */
 135         WARN("Event query finished from wrong thread\n");
 136         return WINED3D_EVENT_QUERY_WRONG_THREAD;
 137     }
 138
 139     context = context_acquire(device, query->context->current_rt);
 140
 141     ENTER_GL();
 142     if (gl_info->supported[ARB_SYNC])
 143     {
 144         /* Apple seems to be into arbitrary limits, and timeouts larger than
 145          * 0xfffffffffffffbff immediately return GL_TIMEOUT_EXPIRED. We don't
 146          * really care and can live with waiting a few μs less. (OS X 10.7.4). */
 147         GLenum gl_ret = GL_EXTCALL(glClientWaitSync(query->object.sync, GL_SYNC_FLUSH_COMMANDS_BIT, ~(GLuint64)0xffff));
 148         checkGLcall("glClientWaitSync");
 149
 150         switch (gl_ret)
 151         {
 152             case GL_ALREADY_SIGNALED:
 153             case GL_CONDITION_SATISFIED:
 154                 ret = WINED3D_EVENT_QUERY_OK;
 155                 break;
 156
 157                 /* We don't expect a timeout for a ~584 year wait */
 158             default:
 159                 ERR("glClientWaitSync returned %#x.\n", gl_ret);
 160                 ret = WINED3D_EVENT_QUERY_ERROR;
 161         }
 162     }
 163     else if (context->gl_info->supported[APPLE_FENCE])
 164     {
 165         GL_EXTCALL(glFinishFenceAPPLE(query->object.id));
 166         checkGLcall("glFinishFenceAPPLE");
 167         ret = WINED3D_EVENT_QUERY_OK;
 168     }
 169     else if (context->gl_info->supported[NV_FENCE])
 170     {
 171         GL_EXTCALL(glFinishFenceNV(query->object.id));
 172         checkGLcall("glFinishFenceNV");
 173         ret = WINED3D_EVENT_QUERY_OK;
 174     }
 175     else
 176     {
 177         ERR("Event query created without GL support\n");
 178         ret = WINED3D_EVENT_QUERY_ERROR;
 179     }
 180     LEAVE_GL();
 181
 182     context_release(context);
 183     return ret;
 184 }
 185
 186 void wined3d_event_query_issue(struct wined3d_event_query *query, const struct wined3d_device *device)
 187 {
 188     const struct wined3d_gl_info *gl_info;
 189     struct wined3d_context *context;
 190
 191     if (query->context)
 192     {
 193         if (!query->context->gl_info->supported[ARB_SYNC] && query->context->tid != GetCurrentThreadId())
 194         {
 195             context_free_event_query(query);
 196             context = context_acquire(device, NULL);
 197             context_alloc_event_query(context, query);
 198         }
 199         else
 200         {
 201             context = context_acquire(device, query->context->current_rt);
 202         }
 203     }
 204     else
 205     {
 206         context = context_acquire(device, NULL);
 207         context_alloc_event_query(context, query);
 208     }
 209
 210     gl_info = context->gl_info;
 211
 212     ENTER_GL();
 213
 214     if (gl_info->supported[ARB_SYNC])
 215     {
 216         if (query->object.sync) GL_EXTCALL(glDeleteSync(query->object.sync));
 217         checkGLcall("glDeleteSync");
 218         query->object.sync = GL_EXTCALL(glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0));
 219         checkGLcall("glFenceSync");
 220     }
 221     else if (gl_info->supported[APPLE_FENCE])
 222     {
 223         GL_EXTCALL(glSetFenceAPPLE(query->object.id));
 224         checkGLcall("glSetFenceAPPLE");
 225     }
 226     else if (gl_info->supported[NV_FENCE])
 227     {
 228         GL_EXTCALL(glSetFenceNV(query->object.id, GL_ALL_COMPLETED_NV));
 229         checkGLcall("glSetFenceNV");
 230     }
 231
 232     LEAVE_GL();
 233
 234     context_release(context);
 235 }
 236
 237 ULONG CDECL wined3d_query_incref(struct wined3d_query *query)
 238 {
 239     ULONG refcount = InterlockedIncrement(&query->ref);
 240
 241     TRACE("%p increasing refcount to %u.\n", query, refcount);
 242
 243     return refcount;
 244 }
 245
 246 ULONG CDECL wined3d_query_decref(struct wined3d_query *query)
 247 {
 248     ULONG refcount = InterlockedDecrement(&query->ref);
 249
 250     TRACE("%p decreasing refcount to %u.\n", query, refcount);
 251
 252     if (!refcount)
 253     {
 254         /* Queries are specific to the GL context that created them. Not
 255          * deleting the query will obviously leak it, but that's still better
 256          * than potentially deleting a different query with the same id in this
 257          * context, and (still) leaking the actual query. */
 258         if (query->type == WINED3D_QUERY_TYPE_EVENT)
 259         {
 260             struct wined3d_event_query *event_query = query->extendedData;
 261             if (event_query) wined3d_event_query_destroy(event_query);
 262         }
 263         else if (query->type == WINED3D_QUERY_TYPE_OCCLUSION)
 264         {
 265             struct wined3d_occlusion_query *oq = query->extendedData;
 266
 267             if (oq->context) context_free_occlusion_query(oq);
 268             HeapFree(GetProcessHeap(), 0, query->extendedData);
 269         }
 270
 271         HeapFree(GetProcessHeap(), 0, query);
 272     }
 273
 274     return refcount;
 275 }
 276
 277 HRESULT CDECL wined3d_query_get_data(struct wined3d_query *query,
 278         void *data, UINT data_size, DWORD flags)
 279 {
 280     TRACE("query %p, data %p, data_size %u, flags %#x.\n",
 281             query, data, data_size, flags);
 282
 283     return query->query_ops->query_get_data(query, data, data_size, flags);
 284 }
 285
 286 UINT CDECL wined3d_query_get_data_size(const struct wined3d_query *query)
 287 {
 288     TRACE("query %p.\n", query);
 289
 290     return query->data_size;
 291 }
 292
 293 HRESULT CDECL wined3d_query_issue(struct wined3d_query *query, DWORD flags)
 294 {
 295     TRACE("query %p, flags %#x.\n", query, flags);
 296
 297     return query->query_ops->query_issue(query, flags);
 298 }
 299
 300 static HRESULT wined3d_occlusion_query_ops_get_data(struct wined3d_query *query,
 301         void *pData, DWORD dwSize, DWORD flags)
 302 {
 303     struct wined3d_occlusion_query *oq = query->extendedData;
 304     struct wined3d_device *device = query->device;
 305     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 306     struct wined3d_context *context;
 307     DWORD* data = pData;
 308     GLuint available;
 309     GLuint samples;
 310     HRESULT res;
 311
 312     TRACE("(%p) : type D3DQUERY_OCCLUSION, pData %p, dwSize %#x, flags %#x.\n", query, pData, dwSize, flags);
 313
 314     if (!oq->context)
 315         query->state = QUERY_CREATED;
 316
 317     if (query->state == QUERY_CREATED)
 318     {
 319         /* D3D allows GetData on a new query, OpenGL doesn't. So just invent the data ourselves */
 320         TRACE("Query wasn't yet started, returning S_OK\n");
 321         if(data) *data = 0;
 322         return S_OK;
 323     }
 324
 325     if (query->state == QUERY_BUILDING)
 326     {
 327         /* Msdn says this returns an error, but our tests show that S_FALSE is returned */
 328         TRACE("Query is building, returning S_FALSE\n");
 329         return S_FALSE;
 330     }
 331
 332     if (!gl_info->supported[ARB_OCCLUSION_QUERY])
 333     {
 334         WARN("%p Occlusion queries not supported. Returning 1.\n", query);
 335         *data = 1;
 336         return S_OK;
 337     }
 338
 339     if (oq->context->tid != GetCurrentThreadId())
 340     {
 341         FIXME("%p Wrong thread, returning 1.\n", query);
 342         *data = 1;
 343         return S_OK;
 344     }
 345
 346     context = context_acquire(query->device, oq->context->current_rt);
 347
 348     ENTER_GL();
 349
 350     GL_EXTCALL(glGetQueryObjectuivARB(oq->id, GL_QUERY_RESULT_AVAILABLE_ARB, &available));
 351     checkGLcall("glGetQueryObjectuivARB(GL_QUERY_RESULT_AVAILABLE)");
 352     TRACE("available %#x.\n", available);
 353
 354     if (available)
 355     {
 356         if (data)
 357         {
 358             GL_EXTCALL(glGetQueryObjectuivARB(oq->id, GL_QUERY_RESULT_ARB, &samples));
 359             checkGLcall("glGetQueryObjectuivARB(GL_QUERY_RESULT)");
 360             TRACE("Returning %d samples.\n", samples);
 361             *data = samples;
 362         }
 363         res = S_OK;
 364     }
 365     else
 366     {
 367         res = S_FALSE;
 368     }
 369
 370     LEAVE_GL();
 371
 372     context_release(context);
 373
 374     return res;
 375 }
 376
 377 static HRESULT wined3d_event_query_ops_get_data(struct wined3d_query *query,
 378         void *pData, DWORD dwSize, DWORD flags)
 379 {
 380     struct wined3d_event_query *event_query = query->extendedData;
 381     BOOL *data = pData;
 382     enum wined3d_event_query_result ret;
 383
 384     TRACE("query %p, pData %p, dwSize %#x, flags %#x.\n", query, pData, dwSize, flags);
 385
 386     if (!pData || !dwSize) return S_OK;
 387     if (!event_query)
 388     {
 389         WARN("Event query not supported by GL, reporting GPU idle.\n");
 390         *data = TRUE;
 391         return S_OK;
 392     }
 393
 394     ret = wined3d_event_query_test(event_query, query->device);
 395     switch(ret)
 396     {
 397         case WINED3D_EVENT_QUERY_OK:
 398         case WINED3D_EVENT_QUERY_NOT_STARTED:
 399             *data = TRUE;
 400             break;
 401
 402         case WINED3D_EVENT_QUERY_WAITING:
 403             *data = FALSE;
 404             break;
 405
 406         case WINED3D_EVENT_QUERY_WRONG_THREAD:
 407             FIXME("(%p) Wrong thread, reporting GPU idle.\n", query);
 408             *data = TRUE;
 409             break;
 410
 411         case WINED3D_EVENT_QUERY_ERROR:
 412             ERR("The GL event query failed, returning D3DERR_INVALIDCALL\n");
 413             return WINED3DERR_INVALIDCALL;
 414     }
 415
 416     return S_OK;
 417 }
 418
 419 enum wined3d_query_type CDECL wined3d_query_get_type(const struct wined3d_query *query)
 420 {
 421     TRACE("query %p.\n", query);
 422
 423     return query->type;
 424 }
 425
 426 static HRESULT wined3d_event_query_ops_issue(struct wined3d_query *query, DWORD flags)
 427 {
 428     TRACE("query %p, flags %#x.\n", query, flags);
 429
 430     TRACE("(%p) : flags %#x, type D3DQUERY_EVENT\n", query, flags);
 431     if (flags & WINED3DISSUE_END)
 432     {
 433         struct wined3d_event_query *event_query = query->extendedData;
 434
 435         /* Faked event query support */
 436         if (!event_query) return WINED3D_OK;
 437
 438         wined3d_event_query_issue(event_query, query->device);
 439     }
 440     else if (flags & WINED3DISSUE_BEGIN)
 441     {
 442         /* Started implicitly at device creation */
 443         ERR("Event query issued with START flag - what to do?\n");
 444     }
 445
 446     if (flags & WINED3DISSUE_BEGIN)
 447         query->state = QUERY_BUILDING;
 448     else
 449         query->state = QUERY_SIGNALLED;
 450
 451     return WINED3D_OK;
 452 }
 453
 454 static HRESULT wined3d_occlusion_query_ops_issue(struct wined3d_query *query, DWORD flags)
 455 {
 456     struct wined3d_device *device = query->device;
 457     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 458
 459     TRACE("query %p, flags %#x.\n", query, flags);
 460
 461     if (gl_info->supported[ARB_OCCLUSION_QUERY])
 462     {
 463         struct wined3d_occlusion_query *oq = query->extendedData;
 464         struct wined3d_context *context;
 465
 466         /* This is allowed according to msdn and our tests. Reset the query and restart */
 467         if (flags & WINED3DISSUE_BEGIN)
 468         {
 469             if (query->state == QUERY_BUILDING)
 470             {
 471                 if (oq->context->tid != GetCurrentThreadId())
 472                 {
 473                     FIXME("Wrong thread, can't restart query.\n");
 474
 475                     context_free_occlusion_query(oq);
 476                     context = context_acquire(query->device, NULL);
 477                     context_alloc_occlusion_query(context, oq);
 478                 }
 479                 else
 480                 {
 481                     context = context_acquire(query->device, oq->context->current_rt);
 482
 483                     ENTER_GL();
 484                     GL_EXTCALL(glEndQueryARB(GL_SAMPLES_PASSED_ARB));
 485                     checkGLcall("glEndQuery()");
 486                     LEAVE_GL();
 487                 }
 488             }
 489             else
 490             {
 491                 if (oq->context) context_free_occlusion_query(oq);
 492                 context = context_acquire(query->device, NULL);
 493                 context_alloc_occlusion_query(context, oq);
 494             }
 495
 496             ENTER_GL();
 497             GL_EXTCALL(glBeginQueryARB(GL_SAMPLES_PASSED_ARB, oq->id));
 498             checkGLcall("glBeginQuery()");
 499             LEAVE_GL();
 500
 501             context_release(context);
 502         }
 503         if (flags & WINED3DISSUE_END)
 504         {
 505             /* Msdn says _END on a non-building occlusion query returns an error, but
 506              * our tests show that it returns OK. But OpenGL doesn't like it, so avoid
 507              * generating an error
 508              */
 509             if (query->state == QUERY_BUILDING)
 510             {
 511                 if (oq->context->tid != GetCurrentThreadId())
 512                 {
 513                     FIXME("Wrong thread, can't end query.\n");
 514                 }
 515                 else
 516                 {
 517                     context = context_acquire(query->device, oq->context->current_rt);
 518
 519                     ENTER_GL();
 520                     GL_EXTCALL(glEndQueryARB(GL_SAMPLES_PASSED_ARB));
 521                     checkGLcall("glEndQuery()");
 522                     LEAVE_GL();
 523
 524                     context_release(context);
 525                 }
 526             }
 527         }
 528     }
 529     else
 530     {
 531         FIXME("%p Occlusion queries not supported.\n", query);
 532     }
 533
 534     if (flags & WINED3DISSUE_BEGIN)
 535         query->state = QUERY_BUILDING;
 536     else
 537         query->state = QUERY_SIGNALLED;
 538
 539     return WINED3D_OK; /* can be WINED3DERR_INVALIDCALL.    */
 540 }
 541
 542 static const struct wined3d_query_ops event_query_ops =
 543 {
 544     wined3d_event_query_ops_get_data,
 545     wined3d_event_query_ops_issue,
 546 };
 547
 548 static const struct wined3d_query_ops occlusion_query_ops =
 549 {
 550     wined3d_occlusion_query_ops_get_data,
 551     wined3d_occlusion_query_ops_issue,
 552 };
 553
 554 static HRESULT query_init(struct wined3d_query *query, struct wined3d_device *device, enum wined3d_query_type type)
 555 {
 556     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 557
 558     switch (type)
 559     {
 560         case WINED3D_QUERY_TYPE_OCCLUSION:
 561             TRACE("Occlusion query.\n");
 562             if (!gl_info->supported[ARB_OCCLUSION_QUERY])
 563             {
 564                 WARN("Unsupported in local OpenGL implementation: ARB_OCCLUSION_QUERY.\n");
 565                 return WINED3DERR_NOTAVAILABLE;
 566             }
 567             query->query_ops = &occlusion_query_ops;
 568             query->data_size = sizeof(DWORD);
 569             query->extendedData = HeapAlloc(GetProcessHeap(), 0, sizeof(struct wined3d_occlusion_query));
 570             if (!query->extendedData)
 571             {
 572                 ERR("Failed to allocate occlusion query extended data.\n");
 573                 return E_OUTOFMEMORY;
 574             }
 575             ((struct wined3d_occlusion_query *)query->extendedData)->context = NULL;
 576             break;
 577
 578         case WINED3D_QUERY_TYPE_EVENT:
 579             TRACE("Event query.\n");
 580             if (!wined3d_event_query_supported(gl_info))
 581             {
 582                 /* Half-Life 2 needs this query. It does not render the main
 583                  * menu correctly otherwise. Pretend to support it, faking
 584                  * this query does not do much harm except potentially
 585                  * lowering performance. */
 586                 FIXME("Event query: Unimplemented, but pretending to be supported.\n");
 587             }
 588             query->query_ops = &event_query_ops;
 589             query->data_size = sizeof(BOOL);
 590             query->extendedData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(struct wined3d_event_query));
 591             if (!query->extendedData)
 592             {
 593                 ERR("Failed to allocate event query memory.\n");
 594                 return E_OUTOFMEMORY;
 595             }
 596             break;
 597
 598         case WINED3D_QUERY_TYPE_VCACHE:
 599         case WINED3D_QUERY_TYPE_RESOURCE_MANAGER:
 600         case WINED3D_QUERY_TYPE_VERTEX_STATS:
 601         case WINED3D_QUERY_TYPE_TIMESTAMP:
 602         case WINED3D_QUERY_TYPE_TIMESTAMP_DISJOINT:
 603         case WINED3D_QUERY_TYPE_TIMESTAMP_FREQ:
 604         case WINED3D_QUERY_TYPE_PIPELINE_TIMINGS:
 605         case WINED3D_QUERY_TYPE_INTERFACE_TIMINGS:
 606         case WINED3D_QUERY_TYPE_VERTEX_TIMINGS:
 607         case WINED3D_QUERY_TYPE_PIXEL_TIMINGS:
 608         case WINED3D_QUERY_TYPE_BANDWIDTH_TIMINGS:
 609         case WINED3D_QUERY_TYPE_CACHE_UTILIZATION:
 610         default:
 611             FIXME("Unhandled query type %#x.\n", type);
 612             return WINED3DERR_NOTAVAILABLE;
 613     }
 614
 615     query->type = type;
 616     query->state = QUERY_CREATED;
 617     query->device = device;
 618     query->ref = 1;
 619
 620     return WINED3D_OK;
 621 }
 622
 623 HRESULT CDECL wined3d_query_create(struct wined3d_device *device,
 624         enum wined3d_query_type type, struct wined3d_query **query)
 625 {
 626     struct wined3d_query *object;
 627     HRESULT hr;
 628
 629     TRACE("device %p, type %#x, query %p.\n", device, type, query);
 630
 631     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 632     if (!object)
 633     {
 634         ERR("Failed to allocate query memory.\n");
 635         return E_OUTOFMEMORY;
 636     }
 637
 638     hr = query_init(object, device, type);
 639     if (FAILED(hr))
 640     {
 641         WARN("Failed to initialize query, hr %#x.\n", hr);
 642         HeapFree(GetProcessHeap(), 0, object);
 643         return hr;
 644     }
 645
 646     TRACE("Created query %p.\n", object);
 647     *query = object;
 648
 649     return WINED3D_OK;
 650 }