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
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  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/mfeatures.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
  45
  46 #if FEATURE_queryobj
  47
  48 static struct gl_query_object *
  49 st_NewQueryObject(struct gl_context *ctx, GLuint id)
  50 {
  51    struct st_query_object *stq = ST_CALLOC_STRUCT(st_query_object);
  52    if (stq) {
  53       stq->base.Id = id;
  54       stq->base.Ready = GL_TRUE;
  55       stq->pq = NULL;
  56       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  57       return &stq->base;
  58    }
  59    return NULL;
  60 }
  61
  62
  63
  64 static void
  65 st_DeleteQuery(struct gl_context *ctx, struct gl_query_object *q)
  66 {
  67    struct pipe_context *pipe = st_context(ctx)->pipe;
  68    struct st_query_object *stq = st_query_object(q);
  69
  70    if (stq->pq) {
  71       pipe->destroy_query(pipe, stq->pq);
  72       stq->pq = NULL;
  73    }
  74
  75    free(stq);
  76 }
  77
  78
  79 static void
  80 st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
  81 {
  82    struct pipe_context *pipe = st_context(ctx)->pipe;
  83    struct st_query_object *stq = st_query_object(q);
  84    unsigned type;
  85
  86    /* convert GL query type to Gallium query type */
  87    switch (q->Target) {
  88    case GL_ANY_SAMPLES_PASSED:
  89       /* fall-through */
  90    case GL_SAMPLES_PASSED_ARB:
  91       type = PIPE_QUERY_OCCLUSION_COUNTER;
  92       break;
  93    case GL_PRIMITIVES_GENERATED:
  94       type = PIPE_QUERY_PRIMITIVES_GENERATED;
  95       break;
  96    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
  97       type = PIPE_QUERY_PRIMITIVES_EMITTED;
  98       break;
  99    case GL_TIME_ELAPSED_EXT:
 100       type = PIPE_QUERY_TIME_ELAPSED;
 101       break;
 102    default:
 103       assert(0 && "unexpected query target in st_BeginQuery()");
 104       return;
 105    }
 106
 107    if (stq->pq && stq->type != type) {
 108       /* free old query of different type */
 109       pipe->destroy_query(pipe, stq->pq);
 110       stq->pq = NULL;
 111       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
 112    }
 113
 114    if (!stq->pq) {
 115       stq->pq = pipe->create_query(pipe, type);
 116       stq->type = type;
 117    }
 118
 119    assert(stq->type == type);
 120
 121    pipe->begin_query(pipe, stq->pq);
 122 }
 123
 124
 125 static void
 126 st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
 127 {
 128    struct pipe_context *pipe = st_context(ctx)->pipe;
 129    struct st_query_object *stq = st_query_object(q);
 130
 131    pipe->end_query(pipe, stq->pq);
 132 }
 133
 134
 135 static void
 136 st_WaitQuery(struct gl_context *ctx, struct gl_query_object *q)
 137 {
 138    struct pipe_context *pipe = st_context(ctx)->pipe;
 139    struct st_query_object *stq = st_query_object(q);
 140
 141    /* this function should only be called if we don't have a ready result */
 142    assert(!stq->base.Ready);
 143
 144    while (!stq->base.Ready &&
 145           !pipe->get_query_result(pipe,
 146                                   stq->pq,
 147                                   TRUE,
 148                                   &q->Result))
 149    {
 150       /* nothing */
 151    }
 152
 153    q->Ready = GL_TRUE;
 154 }
 155
 156
 157 static void
 158 st_CheckQuery(struct gl_context *ctx, struct gl_query_object *q)
 159 {
 160    struct pipe_context *pipe = st_context(ctx)->pipe;
 161    struct st_query_object *stq = st_query_object(q);
 162    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
 163    q->Ready = pipe->get_query_result(pipe, stq->pq, FALSE, &q->Result);
 164 }
 165
 166
 167
 168
 169 void st_init_query_functions(struct dd_function_table *functions)
 170 {
 171    functions->NewQueryObject = st_NewQueryObject;
 172    functions->DeleteQuery = st_DeleteQuery;
 173    functions->BeginQuery = st_BeginQuery;
 174    functions->EndQuery = st_EndQuery;
 175    functions->WaitQuery = st_WaitQuery;
 176    functions->CheckQuery = st_CheckQuery;
 177 }
 178
 179 #endif /* FEATURE_queryobj */