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/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
  45
  46 #if FEATURE_queryobj
  47
  48 static struct gl_query_object *
  49 st_NewQueryObject(GLcontext *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(GLcontext *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(GLcontext *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_SAMPLES_PASSED_ARB:
  89       type = PIPE_QUERY_OCCLUSION_COUNTER;
  90       break;
  91    case GL_PRIMITIVES_GENERATED:
  92       type = PIPE_QUERY_PRIMITIVES_GENERATED;
  93       break;
  94    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
  95       type = PIPE_QUERY_PRIMITIVES_EMITTED;
  96       break;
  97    case GL_TIME_ELAPSED_EXT:
  98       type = PIPE_QUERY_TIME_ELAPSED;
  99       break;
 100    default:
 101       assert(0 && "unexpected query target in st_BeginQuery()");
 102       return;
 103    }
 104
 105    if (stq->pq && stq->type != type) {
 106       /* free old query of different type */
 107       pipe->destroy_query(pipe, stq->pq);
 108       stq->pq = NULL;
 109       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
 110    }
 111
 112    if (!stq->pq) {
 113       stq->pq = pipe->create_query(pipe, type);
 114       stq->type = type;
 115    }
 116
 117    assert(stq->type == type);
 118
 119    pipe->begin_query(pipe, stq->pq);
 120 }
 121
 122
 123 static void
 124 st_EndQuery(GLcontext *ctx, struct gl_query_object *q)
 125 {
 126    struct pipe_context *pipe = st_context(ctx)->pipe;
 127    struct st_query_object *stq = st_query_object(q);
 128
 129    pipe->end_query(pipe, stq->pq);
 130 }
 131
 132
 133 static void
 134 st_WaitQuery(GLcontext *ctx, struct gl_query_object *q)
 135 {
 136    struct pipe_context *pipe = st_context(ctx)->pipe;
 137    struct st_query_object *stq = st_query_object(q);
 138
 139    /* this function should only be called if we don't have a ready result */
 140    assert(!stq->base.Ready);
 141
 142    while (!stq->base.Ready &&
 143           !pipe->get_query_result(pipe,
 144                                   stq->pq,
 145                                   TRUE,
 146                                   &q->Result))
 147    {
 148       /* nothing */
 149    }
 150
 151    q->Ready = GL_TRUE;
 152 }
 153
 154
 155 static void
 156 st_CheckQuery(GLcontext *ctx, struct gl_query_object *q)
 157 {
 158    struct pipe_context *pipe = st_context(ctx)->pipe;
 159    struct st_query_object *stq = st_query_object(q);
 160    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
 161    q->Ready = pipe->get_query_result(pipe, stq->pq, FALSE, &q->Result);
 162 }
 163
 164
 165
 166
 167 void st_init_query_functions(struct dd_function_table *functions)
 168 {
 169    functions->NewQueryObject = st_NewQueryObject;
 170    functions->DeleteQuery = st_DeleteQuery;
 171    functions->BeginQuery = st_BeginQuery;
 172    functions->EndQuery = st_EndQuery;
 173    functions->WaitQuery = st_WaitQuery;
 174    functions->CheckQuery = st_CheckQuery;
 175 }
 176
 177 #endif /* FEATURE_queryobj */