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    struct pipe_query_data_so_statistics so;
  45 };
  46
  47
  48 static struct softpipe_query *softpipe_query( struct pipe_query *p )
  49 {
  50    return (struct softpipe_query *)p;
  51 }
  52
  53 static struct pipe_query *
  54 softpipe_create_query(struct pipe_context *pipe,
  55                       unsigned type)
  56 {
  57    struct softpipe_query* sq;
  58
  59    assert(type == PIPE_QUERY_OCCLUSION_COUNTER ||
  60           type == PIPE_QUERY_TIME_ELAPSED ||
  61           type == PIPE_QUERY_SO_STATISTICS);
  62    sq = CALLOC_STRUCT( softpipe_query );
  63    sq->type = type;
  64
  65    return (struct pipe_query *)sq;
  66 }
  67
  68
  69 static void
  70 softpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
  71 {
  72    FREE(q);
  73 }
  74
  75
  76 static void
  77 softpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
  78 {
  79    struct softpipe_context *softpipe = softpipe_context( pipe );
  80    struct softpipe_query *sq = softpipe_query(q);
  81
  82    switch (sq->type) {
  83    case PIPE_QUERY_OCCLUSION_COUNTER:
  84       sq->start = softpipe->occlusion_count;
  85       break;
  86    case PIPE_QUERY_TIME_ELAPSED:
  87       sq->start = 1000*os_time_get();
  88       break;
  89    case PIPE_QUERY_SO_STATISTICS:
  90       sq->so.num_primitives_written = 0;
  91       sq->so.primitives_storage_needed = 0;
  92    default:
  93       assert(0);
  94       break;
  95    }
  96    softpipe->active_query_count++;
  97    softpipe->dirty |= SP_NEW_QUERY;
  98 }
  99
 100
 101 static void
 102 softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
 103 {
 104    struct softpipe_context *softpipe = softpipe_context( pipe );
 105    struct softpipe_query *sq = softpipe_query(q);
 106
 107    softpipe->active_query_count--;
 108    switch (sq->type) {
 109    case PIPE_QUERY_OCCLUSION_COUNTER:
 110       sq->end = softpipe->occlusion_count;
 111       break;
 112    case PIPE_QUERY_TIME_ELAPSED:
 113       sq->end = 1000*os_time_get();
 114       break;
 115    case PIPE_QUERY_SO_STATISTICS:
 116       sq->so.num_primitives_written =
 117          softpipe->so_stats.num_primitives_written;
 118       sq->so.primitives_storage_needed =
 119          softpipe->so_stats.primitives_storage_needed;
 120    default:
 121       assert(0);
 122       break;
 123    }
 124    softpipe->dirty |= SP_NEW_QUERY;
 125 }
 126
 127
 128 static boolean
 129 softpipe_get_query_result(struct pipe_context *pipe,
 130                           struct pipe_query *q,
 131                           boolean wait,
 132                           void *vresult)
 133 {
 134    struct softpipe_query *sq = softpipe_query(q);
 135    uint64_t *result = (uint64_t*)vresult;
 136
 137    switch (sq->type) {
 138    case PIPE_QUERY_SO_STATISTICS:
 139       memcpy(vresult, &sq->so,
 140              sizeof(struct pipe_query_data_so_statistics));
 141       break;
 142    default:
 143       *result = sq->end - sq->start;
 144       break;
 145    }
 146    return TRUE;
 147 }
 148
 149
 150 /**
 151  * Called by rendering function to check rendering is conditional.
 152  * \return TRUE if we should render, FALSE if we should skip rendering
 153  */
 154 boolean
 155 softpipe_check_render_cond(struct softpipe_context *sp)
 156 {
 157    struct pipe_context *pipe = &sp->pipe;
 158    boolean b, wait;
 159    uint64_t result;
 160
 161    if (!sp->render_cond_query) {
 162       return TRUE;  /* no query predicate, draw normally */
 163    }
 164
 165    wait = (sp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
 166            sp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
 167
 168    b = pipe->get_query_result(pipe, sp->render_cond_query, wait, &result);
 169    if (b)
 170       return result > 0;
 171    else
 172       return TRUE;
 173 }
 174
 175
 176 void softpipe_init_query_funcs(struct softpipe_context *softpipe )
 177 {
 178    softpipe->pipe.create_query = softpipe_create_query;
 179    softpipe->pipe.destroy_query = softpipe_destroy_query;
 180    softpipe->pipe.begin_query = softpipe_begin_query;
 181    softpipe->pipe.end_query = softpipe_end_query;
 182    softpipe->pipe.get_query_result = softpipe_get_query_result;
 183 }
 184
 185