src/mesa/state_tracker/st_cb_queryobj.c

   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 #include "main/image.h"
  39
  40 #include "pipe/p_context.h"
  41 #include "pipe/p_defines.h"
  42 #include "st_context.h"
  43 #include "st_cb_queryobj.h"
  44 #include "st_public.h"
  45
  46
  47 static struct gl_query_object *
  48 st_NewQueryObject(GLcontext *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       return &stq->base;
  56    }
  57    return NULL;
  58 }
  59
  60
  61
  62 static void
  63 st_DeleteQuery(GLcontext *ctx, struct gl_query_object *q)
  64 {
  65    struct pipe_context *pipe = ctx->st->pipe;
  66    struct st_query_object *stq = st_query_object(q);
  67
  68    if (stq->pq) {
  69       pipe->destroy_query(pipe, stq->pq);
  70       stq->pq = NULL;
  71    }
  72
  73    _mesa_free(stq);
  74 }
  75
  76
  77 static void
  78 st_BeginQuery(GLcontext *ctx, struct gl_query_object *q)
  79 {
  80    struct pipe_context *pipe = ctx->st->pipe;
  81    struct st_query_object *stq = st_query_object(q);
  82
  83    switch (q->Target) {
  84    case GL_SAMPLES_PASSED_ARB:
  85       if (!stq->pq)
  86          stq->pq = pipe->create_query( pipe, PIPE_QUERY_OCCLUSION_COUNTER );
  87       break;
  88    default:
  89       assert(0);
  90       return;
  91    }
  92
  93    pipe->begin_query(pipe, stq->pq);
  94 }
  95
  96
  97 static void
  98 st_EndQuery(GLcontext *ctx, struct gl_query_object *q)
  99 {
 100    struct pipe_context *pipe = ctx->st->pipe;
 101    struct st_query_object *stq = st_query_object(q);
 102
 103    pipe->end_query(pipe, stq->pq);
 104 }
 105
 106
 107 static void
 108 st_WaitQuery(GLcontext *ctx, struct gl_query_object *q)
 109 {
 110    struct pipe_context *pipe = ctx->st->pipe;
 111    struct st_query_object *stq = st_query_object(q);
 112
 113    /* this function should only be called if we don't have a ready result */
 114    assert(!stq->base.Ready);
 115
 116    while (!stq->base.Ready &&
 117           !pipe->get_query_result(pipe,
 118                                   stq->pq,
 119                                   TRUE,
 120                                   &q->Result))
 121    {
 122       /* nothing */
 123    }
 124
 125    q->Ready = GL_TRUE;
 126 }
 127
 128
 129 static void
 130 st_CheckQuery(GLcontext *ctx, struct gl_query_object *q)
 131 {
 132    struct pipe_context *pipe = ctx->st->pipe;
 133    struct st_query_object *stq = st_query_object(q);
 134
 135    if (!q->Ready) {
 136       q->Ready = pipe->get_query_result(pipe,
 137                                         stq->pq,
 138                                         FALSE,
 139                                         &q->Result);
 140    }
 141 }
 142
 143
 144
 145
 146 void st_init_query_functions(struct dd_function_table *functions)
 147 {
 148    functions->NewQueryObject = st_NewQueryObject;
 149    functions->DeleteQuery = st_DeleteQuery;
 150    functions->BeginQuery = st_BeginQuery;
 151    functions->EndQuery = st_EndQuery;
 152    functions->WaitQuery = st_WaitQuery;
 153    functions->CheckQuery = st_CheckQuery;
 154 }