src/gallium/drivers/softpipe/sp_query.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 /* Author:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32 #include "draw/draw_context.h"
  33 #include "os/os_time.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_memory.h"
  36 #include "sp_context.h"
  37 #include "sp_query.h"
  38 #include "sp_state.h"
  39
  40 struct softpipe_query {
  41    unsigned type;
  42    uint64_t start;
  43    uint64_t end;
  44 };
  45
  46
  47 static struct softpipe_query *softpipe_query( struct pipe_query *p )
  48 {
  49    return (struct softpipe_query *)p;
  50 }
  51
  52 static struct pipe_query *
  53 softpipe_create_query(struct pipe_context *pipe,
  54                       unsigned type)
  55 {
  56    struct softpipe_query* sq;
  57
  58    assert(type == PIPE_QUERY_OCCLUSION_COUNTER || type == PIPE_QUERY_TIME_ELAPSED);
  59    sq = CALLOC_STRUCT( softpipe_query );
  60    sq->type = type;
  61
  62    return (struct pipe_query *)sq;
  63 }
  64
  65
  66 static void
  67 softpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
  68 {
  69    FREE(q);
  70 }
  71
  72
  73 static void
  74 softpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
  75 {
  76    struct softpipe_context *softpipe = softpipe_context( pipe );
  77    struct softpipe_query *sq = softpipe_query(q);
  78
  79    switch (sq->type) {
  80    case PIPE_QUERY_OCCLUSION_COUNTER:
  81       sq->start = softpipe->occlusion_count;
  82       break;
  83    case PIPE_QUERY_TIME_ELAPSED:
  84       sq->start = 1000*os_time_get();
  85       break;
  86    default:
  87       assert(0);
  88       break;
  89    }
  90    softpipe->active_query_count++;
  91    softpipe->dirty |= SP_NEW_QUERY;
  92 }
  93
  94
  95 static void
  96 softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
  97 {
  98    struct softpipe_context *softpipe = softpipe_context( pipe );
  99    struct softpipe_query *sq = softpipe_query(q);
 100
 101    softpipe->active_query_count--;
 102    switch (sq->type) {
 103    case PIPE_QUERY_OCCLUSION_COUNTER:
 104       sq->end = softpipe->occlusion_count;
 105       break;
 106    case PIPE_QUERY_TIME_ELAPSED:
 107       sq->end = 1000*os_time_get();
 108       break;
 109    default:
 110       assert(0);
 111       break;
 112    }
 113    softpipe->dirty |= SP_NEW_QUERY;
 114 }
 115
 116
 117 static boolean
 118 softpipe_get_query_result(struct pipe_context *pipe,
 119                           struct pipe_query *q,
 120                           boolean wait,
 121                           uint64_t *result )
 122 {
 123    struct softpipe_query *sq = softpipe_query(q);
 124    *result = sq->end - sq->start;
 125    return TRUE;
 126 }
 127
 128
 129 /**
 130  * Called by rendering function to check rendering is conditional.
 131  * \return TRUE if we should render, FALSE if we should skip rendering
 132  */
 133 boolean
 134 softpipe_check_render_cond(struct softpipe_context *sp)
 135 {
 136    struct pipe_context *pipe = &sp->pipe;
 137    boolean b, wait;
 138    uint64_t result;
 139
 140    if (!sp->render_cond_query) {
 141       return TRUE;  /* no query predicate, draw normally */
 142    }
 143
 144    wait = (sp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
 145            sp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
 146
 147    b = pipe->get_query_result(pipe, sp->render_cond_query, wait, &result);
 148    if (b)
 149       return result > 0;
 150    else
 151       return TRUE;
 152 }
 153
 154
 155 void softpipe_init_query_funcs(struct softpipe_context *softpipe )
 156 {
 157    softpipe->pipe.create_query = softpipe_create_query;
 158    softpipe->pipe.destroy_query = softpipe_destroy_query;
 159    softpipe->pipe.begin_query = softpipe_begin_query;
 160    softpipe->pipe.end_query = softpipe_end_query;
 161    softpipe->pipe.get_query_result = softpipe_get_query_result;
 162 }
 163
 164