src/mesa/main/queryobj.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include "glheader.h"
  27 #include "context.h"
  28 #include "enums.h"
  29 #include "hash.h"
  30 #include "imports.h"
  31 #include "queryobj.h"
  32 #include "mtypes.h"
  33 #include "main/dispatch.h"
  34
  35
  36 /**
  37  * Allocate a new query object.  This is a fallback routine called via
  38  * ctx->Driver.NewQueryObject().
  39  * \param ctx - rendering context
  40  * \param id - the new object's ID
  41  * \return pointer to new query_object object or NULL if out of memory.
  42  */
  43 static struct gl_query_object *
  44 _mesa_new_query_object(struct gl_context *ctx, GLuint id)
  45 {
  46    struct gl_query_object *q = MALLOC_STRUCT(gl_query_object);
  47    (void) ctx;
  48    if (q) {
  49       q->Id = id;
  50       q->Result = 0;
  51       q->Active = GL_FALSE;
  52
  53       /* This is to satisfy the language of the specification: "In the initial
  54        * state of a query object, the result is available" (OpenGL 3.1 §
  55        * 2.13).
  56        */
  57       q->Ready = GL_TRUE;
  58
  59       /* OpenGL 3.1 § 2.13 says about GenQueries, "These names are marked as
  60        * used, but no object is associated with them until the first time they
  61        * are used by BeginQuery." Since our implementation actually does
  62        * allocate an object at this point, use a flag to indicate that this
  63        * object has not yet been bound so should not be considered a query.
  64        */
  65       q->EverBound = GL_FALSE;
  66    }
  67    return q;
  68 }
  69
  70
  71 /**
  72  * Begin a query.  Software driver fallback.
  73  * Called via ctx->Driver.BeginQuery().
  74  */
  75 static void
  76 _mesa_begin_query(struct gl_context *ctx, struct gl_query_object *q)
  77 {
  78    ctx->NewState |= _NEW_DEPTH; /* for swrast */
  79 }
  80
  81
  82 /**
  83  * End a query.  Software driver fallback.
  84  * Called via ctx->Driver.EndQuery().
  85  */
  86 static void
  87 _mesa_end_query(struct gl_context *ctx, struct gl_query_object *q)
  88 {
  89    ctx->NewState |= _NEW_DEPTH; /* for swrast */
  90    q->Ready = GL_TRUE;
  91 }
  92
  93
  94 /**
  95  * Wait for query to complete.  Software driver fallback.
  96  * Called via ctx->Driver.WaitQuery().
  97  */
  98 static void
  99 _mesa_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 100 {
 101    /* For software drivers, _mesa_end_query() should have completed the query.
 102     * For real hardware, implement a proper WaitQuery() driver function,
 103     * which may require issuing a flush.
 104     */
 105    assert(q->Ready);
 106 }
 107
 108
 109 /**
 110  * Check if a query results are ready.  Software driver fallback.
 111  * Called via ctx->Driver.CheckQuery().
 112  */
 113 static void
 114 _mesa_check_query(struct gl_context *ctx, struct gl_query_object *q)
 115 {
 116    /* No-op for sw rendering.
 117     * HW drivers may need to flush at this time.
 118     */
 119 }
 120
 121
 122 /**
 123  * Delete a query object.  Called via ctx->Driver.DeleteQuery().
 124  * Not removed from hash table here.
 125  */
 126 static void
 127 _mesa_delete_query(struct gl_context *ctx, struct gl_query_object *q)
 128 {
 129    free(q);
 130 }
 131
 132
 133 void
 134 _mesa_init_query_object_functions(struct dd_function_table *driver)
 135 {
 136    driver->NewQueryObject = _mesa_new_query_object;
 137    driver->DeleteQuery = _mesa_delete_query;
 138    driver->BeginQuery = _mesa_begin_query;
 139    driver->EndQuery = _mesa_end_query;
 140    driver->WaitQuery = _mesa_wait_query;
 141    driver->CheckQuery = _mesa_check_query;
 142 }
 143
 144
 145 /**
 146  * Return pointer to the query object binding point for the given target.
 147  * \return NULL if invalid target, else the address of binding point
 148  */
 149 static struct gl_query_object **
 150 get_query_binding_point(struct gl_context *ctx, GLenum target)
 151 {
 152    switch (target) {
 153    case GL_SAMPLES_PASSED_ARB:
 154       if (ctx->Extensions.ARB_occlusion_query)
 155          return &ctx->Query.CurrentOcclusionObject;
 156       else
 157          return NULL;
 158    case GL_ANY_SAMPLES_PASSED:
 159       if (ctx->Extensions.ARB_occlusion_query2)
 160          return &ctx->Query.CurrentOcclusionObject;
 161       else
 162          return NULL;
 163    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 164       if (ctx->Extensions.ARB_ES3_compatibility
 165           || (ctx->API == API_OPENGLES2 && ctx->Version >= 30))
 166          return &ctx->Query.CurrentOcclusionObject;
 167       else
 168          return NULL;
 169    case GL_TIME_ELAPSED_EXT:
 170       if (ctx->Extensions.EXT_timer_query)
 171          return &ctx->Query.CurrentTimerObject;
 172       else
 173          return NULL;
 174    case GL_PRIMITIVES_GENERATED:
 175       if (ctx->Extensions.EXT_transform_feedback)
 176          return &ctx->Query.PrimitivesGenerated;
 177       else
 178          return NULL;
 179    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 180       if (ctx->Extensions.EXT_transform_feedback)
 181          return &ctx->Query.PrimitivesWritten;
 182       else
 183          return NULL;
 184    default:
 185       return NULL;
 186    }
 187 }
 188
 189
 190 void GLAPIENTRY
 191 _mesa_GenQueries(GLsizei n, GLuint *ids)
 192 {
 193    GLuint first;
 194    GET_CURRENT_CONTEXT(ctx);
 195
 196    if (MESA_VERBOSE & VERBOSE_API)
 197       _mesa_debug(ctx, "glGenQueries(%d)\n", n);
 198
 199    if (n < 0) {
 200       _mesa_error(ctx, GL_INVALID_VALUE, "glGenQueriesARB(n < 0)");
 201       return;
 202    }
 203
 204    /* No query objects can be active at this time! */
 205    if (ctx->Query.CurrentOcclusionObject ||
 206        ctx->Query.CurrentTimerObject) {
 207       _mesa_error(ctx, GL_INVALID_OPERATION, "glGenQueriesARB");
 208       return;
 209    }
 210
 211    first = _mesa_HashFindFreeKeyBlock(ctx->Query.QueryObjects, n);
 212    if (first) {
 213       GLsizei i;
 214       for (i = 0; i < n; i++) {
 215          struct gl_query_object *q
 216             = ctx->Driver.NewQueryObject(ctx, first + i);
 217          if (!q) {
 218             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenQueriesARB");
 219             return;
 220          }
 221          ids[i] = first + i;
 222          _mesa_HashInsert(ctx->Query.QueryObjects, first + i, q);
 223       }
 224    }
 225 }
 226
 227
 228 void GLAPIENTRY
 229 _mesa_DeleteQueries(GLsizei n, const GLuint *ids)
 230 {
 231    GLint i;
 232    GET_CURRENT_CONTEXT(ctx);
 233    FLUSH_VERTICES(ctx, 0);
 234
 235    if (MESA_VERBOSE & VERBOSE_API)
 236       _mesa_debug(ctx, "glDeleteQueries(%d)\n", n);
 237
 238    if (n < 0) {
 239       _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteQueriesARB(n < 0)");
 240       return;
 241    }
 242
 243    /* No query objects can be active at this time! */
 244    if (ctx->Query.CurrentOcclusionObject ||
 245        ctx->Query.CurrentTimerObject) {
 246       _mesa_error(ctx, GL_INVALID_OPERATION, "glDeleteQueriesARB");
 247       return;
 248    }
 249
 250    for (i = 0; i < n; i++) {
 251       if (ids[i] > 0) {
 252          struct gl_query_object *q = _mesa_lookup_query_object(ctx, ids[i]);
 253          if (q) {
 254             ASSERT(!q->Active); /* should be caught earlier */
 255             _mesa_HashRemove(ctx->Query.QueryObjects, ids[i]);
 256             ctx->Driver.DeleteQuery(ctx, q);
 257          }
 258       }
 259    }
 260 }
 261
 262
 263 GLboolean GLAPIENTRY
 264 _mesa_IsQuery(GLuint id)
 265 {
 266    struct gl_query_object *q;
 267
 268    GET_CURRENT_CONTEXT(ctx);
 269    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 270
 271    if (MESA_VERBOSE & VERBOSE_API)
 272       _mesa_debug(ctx, "glIsQuery(%u)\n", id);
 273
 274    if (id == 0)
 275       return GL_FALSE;
 276
 277    q = _mesa_lookup_query_object(ctx, id);
 278    if (q == NULL)
 279       return GL_FALSE;
 280
 281    return q->EverBound;
 282 }
 283
 284 static GLboolean
 285 query_error_check_index(struct gl_context *ctx, GLenum target, GLuint index)
 286 {
 287    switch (target) {
 288    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 289    case GL_PRIMITIVES_GENERATED:
 290       if (index >= ctx->Const.MaxVertexStreams) {
 291          _mesa_error(ctx, GL_INVALID_VALUE,
 292                      "glBeginQueryIndexed(index>=MaxVertexStreams)");
 293          return GL_FALSE;
 294       }
 295       break;
 296    default:
 297       if (index > 0) {
 298          _mesa_error(ctx, GL_INVALID_VALUE, "glBeginQueryIndexed(index>0)");
 299          return GL_FALSE;
 300       }
 301    }
 302    return GL_TRUE;
 303 }
 304
 305 void GLAPIENTRY
 306 _mesa_BeginQueryIndexed(GLenum target, GLuint index, GLuint id)
 307 {
 308    struct gl_query_object *q, **bindpt;
 309    GET_CURRENT_CONTEXT(ctx);
 310
 311    if (MESA_VERBOSE & VERBOSE_API)
 312       _mesa_debug(ctx, "glBeginQueryIndexed(%s, %u, %u)\n",
 313                   _mesa_lookup_enum_by_nr(target), index, id);
 314
 315    if (!query_error_check_index(ctx, target, index))
 316       return;
 317
 318    FLUSH_VERTICES(ctx, 0);
 319
 320    bindpt = get_query_binding_point(ctx, target);
 321    if (!bindpt) {
 322       _mesa_error(ctx, GL_INVALID_ENUM, "glBeginQuery{Indexed}(target)");
 323       return;
 324    }
 325
 326    /* From the GL_ARB_occlusion_query spec:
 327     *
 328     *     "If BeginQueryARB is called while another query is already in
 329     *      progress with the same target, an INVALID_OPERATION error is
 330     *      generated."
 331     */
 332    if (*bindpt) {
 333       _mesa_error(ctx, GL_INVALID_OPERATION,
 334                   "glBeginQuery{Indexed}(target=%s is active)",
 335                   _mesa_lookup_enum_by_nr(target));
 336       return;
 337    }
 338
 339    if (id == 0) {
 340       _mesa_error(ctx, GL_INVALID_OPERATION, "glBeginQuery{Indexed}(id==0)");
 341       return;
 342    }
 343
 344    q = _mesa_lookup_query_object(ctx, id);
 345    if (!q) {
 346       if (ctx->API != API_OPENGL_COMPAT) {
 347          _mesa_error(ctx, GL_INVALID_OPERATION,
 348                      "glBeginQuery{Indexed}(non-gen name)");
 349          return;
 350       } else {
 351          /* create new object */
 352          q = ctx->Driver.NewQueryObject(ctx, id);
 353          if (!q) {
 354             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBeginQuery{Indexed}");
 355             return;
 356          }
 357          _mesa_HashInsert(ctx->Query.QueryObjects, id, q);
 358       }
 359    }
 360    else {
 361       /* pre-existing object */
 362       if (q->Active) {
 363          _mesa_error(ctx, GL_INVALID_OPERATION,
 364                      "glBeginQuery{Indexed}(query already active)");
 365          return;
 366       }
 367    }
 368
 369    q->Target = target;
 370    q->Active = GL_TRUE;
 371    q->Result = 0;
 372    q->Ready = GL_FALSE;
 373    q->EverBound = GL_TRUE;
 374
 375    /* XXX should probably refcount query objects */
 376    *bindpt = q;
 377
 378    ctx->Driver.BeginQuery(ctx, q);
 379 }
 380
 381
 382 void GLAPIENTRY
 383 _mesa_EndQueryIndexed(GLenum target, GLuint index)
 384 {
 385    struct gl_query_object *q, **bindpt;
 386    GET_CURRENT_CONTEXT(ctx);
 387
 388    if (MESA_VERBOSE & VERBOSE_API)
 389       _mesa_debug(ctx, "glEndQueryIndexed(%s, %u)\n",
 390                   _mesa_lookup_enum_by_nr(target), index);
 391
 392    if (!query_error_check_index(ctx, target, index))
 393       return;
 394
 395    FLUSH_VERTICES(ctx, 0);
 396
 397    bindpt = get_query_binding_point(ctx, target);
 398    if (!bindpt) {
 399       _mesa_error(ctx, GL_INVALID_ENUM, "glEndQuery{Indexed}(target)");
 400       return;
 401    }
 402
 403    /* XXX should probably refcount query objects */
 404    q = *bindpt;
 405
 406    /* Check for GL_ANY_SAMPLES_PASSED vs GL_SAMPLES_PASSED. */
 407    if (q && q->Target != target) {
 408       _mesa_error(ctx, GL_INVALID_OPERATION,
 409                   "glEndQuery(target=%s with active query of target %s)",
 410                   _mesa_lookup_enum_by_nr(target),
 411                   _mesa_lookup_enum_by_nr(q->Target));
 412       return;
 413    }
 414
 415    *bindpt = NULL;
 416
 417    if (!q || !q->Active) {
 418       _mesa_error(ctx, GL_INVALID_OPERATION,
 419                   "glEndQuery{Indexed}(no matching glBeginQuery{Indexed})");
 420       return;
 421    }
 422
 423    q->Active = GL_FALSE;
 424    ctx->Driver.EndQuery(ctx, q);
 425 }
 426
 427 void GLAPIENTRY
 428 _mesa_BeginQuery(GLenum target, GLuint id)
 429 {
 430    _mesa_BeginQueryIndexed(target, 0, id);
 431 }
 432
 433 void GLAPIENTRY
 434 _mesa_EndQuery(GLenum target)
 435 {
 436    _mesa_EndQueryIndexed(target, 0);
 437 }
 438
 439 void GLAPIENTRY
 440 _mesa_QueryCounter(GLuint id, GLenum target)
 441 {
 442    struct gl_query_object *q;
 443    GET_CURRENT_CONTEXT(ctx);
 444
 445    if (MESA_VERBOSE & VERBOSE_API)
 446       _mesa_debug(ctx, "glQueryCounter(%u, %s)\n", id,
 447                   _mesa_lookup_enum_by_nr(target));
 448
 449    /* error checking */
 450    if (target != GL_TIMESTAMP) {
 451       _mesa_error(ctx, GL_INVALID_ENUM, "glQueryCounter(target)");
 452       return;
 453    }
 454
 455    if (id == 0) {
 456       _mesa_error(ctx, GL_INVALID_OPERATION, "glQueryCounter(id==0)");
 457       return;
 458    }
 459
 460    q = _mesa_lookup_query_object(ctx, id);
 461    if (!q) {
 462       /* XXX the Core profile should throw INVALID_OPERATION here */
 463
 464       /* create new object */
 465       q = ctx->Driver.NewQueryObject(ctx, id);
 466       if (!q) {
 467          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glQueryCounter");
 468          return;
 469       }
 470       _mesa_HashInsert(ctx->Query.QueryObjects, id, q);
 471    }
 472    else {
 473       if (q->Target && q->Target != GL_TIMESTAMP) {
 474          _mesa_error(ctx, GL_INVALID_OPERATION,
 475                      "glQueryCounter(id has an invalid target)");
 476          return;
 477       }
 478    }
 479
 480    if (q->Active) {
 481       _mesa_error(ctx, GL_INVALID_OPERATION, "glQueryCounter(id is active)");
 482       return;
 483    }
 484
 485    q->Target = target;
 486    q->Result = 0;
 487    q->Ready = GL_FALSE;
 488    q->EverBound = GL_TRUE;
 489
 490    if (ctx->Driver.QueryCounter) {
 491       ctx->Driver.QueryCounter(ctx, q);
 492    } else {
 493       /* QueryCounter is implemented using EndQuery without BeginQuery
 494        * in drivers. This is actually Direct3D and Gallium convention.
 495        */
 496       ctx->Driver.EndQuery(ctx, q);
 497    }
 498 }
 499
 500
 501 void GLAPIENTRY
 502 _mesa_GetQueryIndexediv(GLenum target, GLuint index, GLenum pname,
 503                         GLint *params)
 504 {
 505    struct gl_query_object *q = NULL, **bindpt = NULL;
 506    GET_CURRENT_CONTEXT(ctx);
 507
 508    if (MESA_VERBOSE & VERBOSE_API)
 509       _mesa_debug(ctx, "glGetQueryIndexediv(%s, %u, %s)\n",
 510                   _mesa_lookup_enum_by_nr(target),
 511                   index,
 512                   _mesa_lookup_enum_by_nr(pname));
 513
 514    if (!query_error_check_index(ctx, target, index))
 515       return;
 516
 517    if (target == GL_TIMESTAMP) {
 518       if (!ctx->Extensions.ARB_timer_query) {
 519          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryARB(target)");
 520          return;
 521       }
 522    }
 523    else {
 524       bindpt = get_query_binding_point(ctx, target);
 525       if (!bindpt) {
 526          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQuery{Indexed}iv(target)");
 527          return;
 528       }
 529
 530       q = *bindpt;
 531    }
 532
 533    switch (pname) {
 534       case GL_QUERY_COUNTER_BITS_ARB:
 535          switch (target) {
 536          case GL_SAMPLES_PASSED:
 537             *params = ctx->Const.QueryCounterBits.SamplesPassed;
 538             break;
 539          case GL_ANY_SAMPLES_PASSED:
 540             /* The minimum value of this is 1 if it's nonzero, and the value
 541              * is only ever GL_TRUE or GL_FALSE, so no sense in reporting more
 542              * bits.
 543              */
 544             *params = 1;
 545             break;
 546          case GL_TIME_ELAPSED:
 547             *params = ctx->Const.QueryCounterBits.TimeElapsed;
 548             break;
 549          case GL_TIMESTAMP:
 550             *params = ctx->Const.QueryCounterBits.Timestamp;
 551             break;
 552          case GL_PRIMITIVES_GENERATED:
 553             *params = ctx->Const.QueryCounterBits.PrimitivesGenerated;
 554             break;
 555          case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 556             *params = ctx->Const.QueryCounterBits.PrimitivesWritten;
 557             break;
 558          default:
 559             _mesa_problem(ctx,
 560                           "Unknown target in glGetQueryIndexediv(target = %s)",
 561                           _mesa_lookup_enum_by_nr(target));
 562             *params = 0;
 563             break;
 564          }
 565          break;
 566       case GL_CURRENT_QUERY_ARB:
 567          *params = (q && q->Target == target) ? q->Id : 0;
 568          break;
 569       default:
 570          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQuery{Indexed}iv(pname)");
 571          return;
 572    }
 573 }
 574
 575 void GLAPIENTRY
 576 _mesa_GetQueryiv(GLenum target, GLenum pname, GLint *params)
 577 {
 578    _mesa_GetQueryIndexediv(target, 0, pname, params);
 579 }
 580
 581 void GLAPIENTRY
 582 _mesa_GetQueryObjectiv(GLuint id, GLenum pname, GLint *params)
 583 {
 584    struct gl_query_object *q = NULL;
 585    GET_CURRENT_CONTEXT(ctx);
 586
 587    if (MESA_VERBOSE & VERBOSE_API)
 588       _mesa_debug(ctx, "glGetQueryObjectiv(%u, %s)\n", id,
 589                   _mesa_lookup_enum_by_nr(pname));
 590
 591    if (id)
 592       q = _mesa_lookup_query_object(ctx, id);
 593
 594    if (!q || q->Active) {
 595       _mesa_error(ctx, GL_INVALID_OPERATION,
 596                   "glGetQueryObjectivARB(id=%d is invalid or active)", id);
 597       return;
 598    }
 599
 600    switch (pname) {
 601       case GL_QUERY_RESULT_ARB:
 602          if (!q->Ready)
 603             ctx->Driver.WaitQuery(ctx, q);
 604          /* if result is too large for returned type, clamp to max value */
 605          if (q->Target == GL_ANY_SAMPLES_PASSED
 606              || q->Target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
 607             if (q->Result)
 608                *params = GL_TRUE;
 609             else
 610                *params = GL_FALSE;
 611          } else {
 612             if (q->Result > 0x7fffffff) {
 613                *params = 0x7fffffff;
 614             }
 615             else {
 616                *params = (GLint)q->Result;
 617             }
 618          }
 619          break;
 620       case GL_QUERY_RESULT_AVAILABLE_ARB:
 621          if (!q->Ready)
 622             ctx->Driver.CheckQuery( ctx, q );
 623          *params = q->Ready;
 624          break;
 625       default:
 626          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryObjectivARB(pname)");
 627          return;
 628    }
 629 }
 630
 631
 632 void GLAPIENTRY
 633 _mesa_GetQueryObjectuiv(GLuint id, GLenum pname, GLuint *params)
 634 {
 635    struct gl_query_object *q = NULL;
 636    GET_CURRENT_CONTEXT(ctx);
 637
 638    if (MESA_VERBOSE & VERBOSE_API)
 639       _mesa_debug(ctx, "glGetQueryObjectuiv(%u, %s)\n", id,
 640                   _mesa_lookup_enum_by_nr(pname));
 641
 642    if (id)
 643       q = _mesa_lookup_query_object(ctx, id);
 644
 645    if (!q || q->Active) {
 646       _mesa_error(ctx, GL_INVALID_OPERATION,
 647                   "glGetQueryObjectuivARB(id=%d is invalid or active)", id);
 648       return;
 649    }
 650
 651    switch (pname) {
 652       case GL_QUERY_RESULT_ARB:
 653          if (!q->Ready)
 654             ctx->Driver.WaitQuery(ctx, q);
 655          /* if result is too large for returned type, clamp to max value */
 656          if (q->Target == GL_ANY_SAMPLES_PASSED
 657              || q->Target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
 658             if (q->Result)
 659                *params = GL_TRUE;
 660             else
 661                *params = GL_FALSE;
 662          } else {
 663             if (q->Result > 0xffffffff) {
 664                *params = 0xffffffff;
 665             }
 666             else {
 667                *params = (GLuint)q->Result;
 668             }
 669          }
 670          break;
 671       case GL_QUERY_RESULT_AVAILABLE_ARB:
 672          if (!q->Ready)
 673             ctx->Driver.CheckQuery( ctx, q );
 674          *params = q->Ready;
 675          break;
 676       default:
 677          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryObjectuivARB(pname)");
 678          return;
 679    }
 680 }
 681
 682
 683 /**
 684  * New with GL_EXT_timer_query
 685  */
 686 void GLAPIENTRY
 687 _mesa_GetQueryObjecti64v(GLuint id, GLenum pname, GLint64EXT *params)
 688 {
 689    struct gl_query_object *q = NULL;
 690    GET_CURRENT_CONTEXT(ctx);
 691
 692    if (MESA_VERBOSE & VERBOSE_API)
 693       _mesa_debug(ctx, "glGetQueryObjecti64v(%u, %s)\n", id,
 694                   _mesa_lookup_enum_by_nr(pname));
 695
 696    if (id)
 697       q = _mesa_lookup_query_object(ctx, id);
 698
 699    if (!q || q->Active) {
 700       _mesa_error(ctx, GL_INVALID_OPERATION,
 701                   "glGetQueryObjectui64vARB(id=%d is invalid or active)", id);
 702       return;
 703    }
 704
 705    switch (pname) {
 706       case GL_QUERY_RESULT_ARB:
 707          if (!q->Ready)
 708             ctx->Driver.WaitQuery(ctx, q);
 709          *params = q->Result;
 710          break;
 711       case GL_QUERY_RESULT_AVAILABLE_ARB:
 712          if (!q->Ready)
 713             ctx->Driver.CheckQuery( ctx, q );
 714          *params = q->Ready;
 715          break;
 716       default:
 717          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryObjecti64vARB(pname)");
 718          return;
 719    }
 720 }
 721
 722
 723 /**
 724  * New with GL_EXT_timer_query
 725  */
 726 void GLAPIENTRY
 727 _mesa_GetQueryObjectui64v(GLuint id, GLenum pname, GLuint64EXT *params)
 728 {
 729    struct gl_query_object *q = NULL;
 730    GET_CURRENT_CONTEXT(ctx);
 731
 732    if (MESA_VERBOSE & VERBOSE_API)
 733       _mesa_debug(ctx, "glGetQueryObjectui64v(%u, %s)\n", id,
 734                   _mesa_lookup_enum_by_nr(pname));
 735
 736    if (id)
 737       q = _mesa_lookup_query_object(ctx, id);
 738
 739    if (!q || q->Active) {
 740       _mesa_error(ctx, GL_INVALID_OPERATION,
 741                   "glGetQueryObjectuui64vARB(id=%d is invalid or active)", id);
 742       return;
 743    }
 744
 745    switch (pname) {
 746       case GL_QUERY_RESULT_ARB:
 747          if (!q->Ready)
 748             ctx->Driver.WaitQuery(ctx, q);
 749          *params = q->Result;
 750          break;
 751       case GL_QUERY_RESULT_AVAILABLE_ARB:
 752          if (!q->Ready)
 753             ctx->Driver.CheckQuery( ctx, q );
 754          *params = q->Ready;
 755          break;
 756       default:
 757          _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryObjectui64vARB(pname)");
 758          return;
 759    }
 760 }
 761
 762 /**
 763  * Allocate/init the context state related to query objects.
 764  */
 765 void
 766 _mesa_init_queryobj(struct gl_context *ctx)
 767 {
 768    ctx->Query.QueryObjects = _mesa_NewHashTable();
 769    ctx->Query.CurrentOcclusionObject = NULL;
 770
 771    ctx->Const.QueryCounterBits.SamplesPassed = 64;
 772    ctx->Const.QueryCounterBits.TimeElapsed = 64;
 773    ctx->Const.QueryCounterBits.Timestamp = 64;
 774    ctx->Const.QueryCounterBits.PrimitivesGenerated = 64;
 775    ctx->Const.QueryCounterBits.PrimitivesWritten = 64;
 776 }
 777
 778
 779 /**
 780  * Callback for deleting a query object.  Called by _mesa_HashDeleteAll().
 781  */
 782 static void
 783 delete_queryobj_cb(GLuint id, void *data, void *userData)
 784 {
 785    struct gl_query_object *q= (struct gl_query_object *) data;
 786    struct gl_context *ctx = (struct gl_context *)userData;
 787    ctx->Driver.DeleteQuery(ctx, q);
 788 }
 789
 790
 791 /**
 792  * Free the context state related to query objects.
 793  */
 794 void
 795 _mesa_free_queryobj_data(struct gl_context *ctx)
 796 {
 797    _mesa_HashDeleteAll(ctx->Query.QueryObjects, delete_queryobj_cb, ctx);
 798    _mesa_DeleteHashTable(ctx->Query.QueryObjects);
 799 }