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 #include "st_cb_bitmap.h"
  45
  46
  47 #if FEATURE_queryobj
  48
  49 static struct gl_query_object *
  50 st_NewQueryObject(struct gl_context *ctx, GLuint id)
  51 {
  52    struct st_query_object *stq = ST_CALLOC_STRUCT(st_query_object);
  53    if (stq) {
  54       stq->base.Id = id;
  55       stq->base.Ready = GL_TRUE;
  56       stq->pq = NULL;
  57       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  58       return &stq->base;
  59    }
  60    return NULL;
  61 }
  62
  63
  64
  65 static void
  66 st_DeleteQuery(struct gl_context *ctx, struct gl_query_object *q)
  67 {
  68    struct pipe_context *pipe = st_context(ctx)->pipe;
  69    struct st_query_object *stq = st_query_object(q);
  70
  71    if (stq->pq) {
  72       pipe->destroy_query(pipe, stq->pq);
  73       stq->pq = NULL;
  74    }
  75
  76    free(stq);
  77 }
  78
  79
  80 static void
  81 st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
  82 {
  83    struct pipe_context *pipe = st_context(ctx)->pipe;
  84    struct st_query_object *stq = st_query_object(q);
  85    unsigned type;
  86
  87    st_flush_bitmap_cache(st_context(ctx));
  88
  89    /* convert GL query type to Gallium query type */
  90    switch (q->Target) {
  91    case GL_ANY_SAMPLES_PASSED:
  92       /* fall-through */
  93    case GL_SAMPLES_PASSED_ARB:
  94       type = PIPE_QUERY_OCCLUSION_COUNTER;
  95       break;
  96    case GL_PRIMITIVES_GENERATED:
  97       type = PIPE_QUERY_PRIMITIVES_GENERATED;
  98       break;
  99    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 100       type = PIPE_QUERY_PRIMITIVES_EMITTED;
 101       break;
 102    case GL_TIME_ELAPSED_EXT:
 103       type = PIPE_QUERY_TIME_ELAPSED;
 104       break;
 105    default:
 106       assert(0 && "unexpected query target in st_BeginQuery()");
 107       return;
 108    }
 109
 110    if (stq->pq && stq->type != type) {
 111       /* free old query of different type */
 112       pipe->destroy_query(pipe, stq->pq);
 113       stq->pq = NULL;
 114       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
 115    }
 116
 117    if (!stq->pq) {
 118       stq->pq = pipe->create_query(pipe, type);
 119       stq->type = type;
 120    }
 121
 122    assert(stq->type == type);
 123
 124    pipe->begin_query(pipe, stq->pq);
 125 }
 126
 127
 128 static void
 129 st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
 130 {
 131    struct pipe_context *pipe = st_context(ctx)->pipe;
 132    struct st_query_object *stq = st_query_object(q);
 133
 134    st_flush_bitmap_cache(st_context(ctx));
 135
 136    pipe->end_query(pipe, stq->pq);
 137 }
 138
 139
 140 static void
 141 st_WaitQuery(struct gl_context *ctx, struct gl_query_object *q)
 142 {
 143    struct pipe_context *pipe = st_context(ctx)->pipe;
 144    struct st_query_object *stq = st_query_object(q);
 145
 146    /* this function should only be called if we don't have a ready result */
 147    assert(!stq->base.Ready);
 148
 149    while (!stq->base.Ready &&
 150           !pipe->get_query_result(pipe,
 151                                   stq->pq,
 152                                   TRUE,
 153                                   &q->Result))
 154    {
 155       /* nothing */
 156    }
 157
 158    q->Ready = GL_TRUE;
 159 }
 160
 161
 162 static void
 163 st_CheckQuery(struct gl_context *ctx, struct gl_query_object *q)
 164 {
 165    struct pipe_context *pipe = st_context(ctx)->pipe;
 166    struct st_query_object *stq = st_query_object(q);
 167    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
 168    q->Ready = pipe->get_query_result(pipe, stq->pq, FALSE, &q->Result);
 169 }
 170
 171
 172
 173
 174 void st_init_query_functions(struct dd_function_table *functions)
 175 {
 176    functions->NewQueryObject = st_NewQueryObject;
 177    functions->DeleteQuery = st_DeleteQuery;
 178    functions->BeginQuery = st_BeginQuery;
 179    functions->EndQuery = st_EndQuery;
 180    functions->WaitQuery = st_WaitQuery;
 181    functions->CheckQuery = st_CheckQuery;
 182 }
 183
 184 #endif /* FEATURE_queryobj */