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
  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 */