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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * 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
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28.  
  29. /**
  30.  * glBegin/EndQuery interface to pipe
  31.  *
  32.  * \author Brian Paul
  33.  */
  34.  
  35.  
  36. #include "main/imports.h"
  37. #include "main/context.h"
  38.  
  39. #include "pipe/p_context.h"
  40. #include "pipe/p_defines.h"
  41. #include "st_context.h"
  42. #include "st_cb_queryobj.h"
  43.  
  44.  
  45. #if FEATURE_queryobj
  46.  
  47. static struct gl_query_object *
  48. st_NewQueryObject(struct gl_context *ctx, GLuint id)
  49. {
  50.    struct st_query_object *stq = ST_CALLOC_STRUCT(st_query_object);
  51.    if (stq) {
  52.       stq->base.Id = id;
  53.       stq->base.Ready = GL_TRUE;
  54.       stq->pq = NULL;
  55.       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  56.       return &stq->base;
  57.    }
  58.    return NULL;
  59. }
  60.  
  61.  
  62.  
  63. static void
  64. st_DeleteQuery(struct gl_context *ctx, struct gl_query_object *q)
  65. {
  66.    struct pipe_context *pipe = st_context(ctx)->pipe;
  67.    struct st_query_object *stq = st_query_object(q);
  68.  
  69.    if (stq->pq) {
  70.       pipe->destroy_query(pipe, stq->pq);
  71.       stq->pq = NULL;
  72.    }
  73.  
  74.    free(stq);
  75. }
  76.  
  77.  
  78. static void
  79. st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
  80. {
  81.    struct pipe_context *pipe = st_context(ctx)->pipe;
  82.    struct st_query_object *stq = st_query_object(q);
  83.    unsigned type;
  84.  
  85.    /* convert GL query type to Gallium query type */
  86.    switch (q->Target) {
  87.    case GL_SAMPLES_PASSED_ARB:
  88.       type = PIPE_QUERY_OCCLUSION_COUNTER;
  89.       break;
  90.    case GL_PRIMITIVES_GENERATED:
  91.       type = PIPE_QUERY_PRIMITIVES_GENERATED;
  92.       break;
  93.    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
  94.       type = PIPE_QUERY_PRIMITIVES_EMITTED;
  95.       break;
  96.    case GL_TIME_ELAPSED_EXT:
  97.       type = PIPE_QUERY_TIME_ELAPSED;
  98.       break;
  99.    default:
  100.       assert(0 && "unexpected query target in st_BeginQuery()");
  101.       return;
  102.    }
  103.  
  104.    if (stq->pq && stq->type != type) {
  105.       /* free old query of different type */
  106.       pipe->destroy_query(pipe, stq->pq);
  107.       stq->pq = NULL;
  108.       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  109.    }
  110.  
  111.    if (!stq->pq) {
  112.       stq->pq = pipe->create_query(pipe, type);
  113.       stq->type = type;
  114.    }
  115.  
  116.    assert(stq->type == type);
  117.  
  118.    pipe->begin_query(pipe, stq->pq);
  119. }
  120.  
  121.  
  122. static void
  123. st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
  124. {
  125.    struct pipe_context *pipe = st_context(ctx)->pipe;
  126.    struct st_query_object *stq = st_query_object(q);
  127.  
  128.    pipe->end_query(pipe, stq->pq);
  129. }
  130.  
  131.  
  132. static void
  133. st_WaitQuery(struct gl_context *ctx, struct gl_query_object *q)
  134. {
  135.    struct pipe_context *pipe = st_context(ctx)->pipe;
  136.    struct st_query_object *stq = st_query_object(q);
  137.  
  138.    /* this function should only be called if we don't have a ready result */
  139.    assert(!stq->base.Ready);
  140.  
  141.    while (!stq->base.Ready &&
  142.           !pipe->get_query_result(pipe,
  143.                                   stq->pq,
  144.                                   TRUE,
  145.                                   &q->Result))
  146.    {
  147.       /* nothing */
  148.    }
  149.                            
  150.    q->Ready = GL_TRUE;
  151. }
  152.  
  153.  
  154. static void
  155. st_CheckQuery(struct gl_context *ctx, struct gl_query_object *q)
  156. {
  157.    struct pipe_context *pipe = st_context(ctx)->pipe;
  158.    struct st_query_object *stq = st_query_object(q);
  159.    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
  160.    q->Ready = pipe->get_query_result(pipe, stq->pq, FALSE, &q->Result);
  161. }
  162.  
  163.  
  164.  
  165.  
  166. void st_init_query_functions(struct dd_function_table *functions)
  167. {
  168.    functions->NewQueryObject = st_NewQueryObject;
  169.    functions->DeleteQuery = st_DeleteQuery;
  170.    functions->BeginQuery = st_BeginQuery;
  171.    functions->EndQuery = st_EndQuery;
  172.    functions->WaitQuery = st_WaitQuery;
  173.    functions->CheckQuery = st_CheckQuery;
  174. }
  175.  
  176. #endif /* FEATURE_queryobj */
  177.