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           type == PIPE_QUERY_GPU_FINISHED);
  63    sq = CALLOC_STRUCT( softpipe_query );
  64    sq->type = type;
  65
  66    return (struct pipe_query *)sq;
  67 }
  68
  69
  70 static void
  71 softpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
  72 {
  73    FREE(q);
  74 }
  75
  76
  77 static void
  78 softpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
  79 {
  80    struct softpipe_context *softpipe = softpipe_context( pipe );
  81    struct softpipe_query *sq = softpipe_query(q);
  82
  83    switch (sq->type) {
  84    case PIPE_QUERY_OCCLUSION_COUNTER:
  85       sq->start = softpipe->occlusion_count;
  86       break;
  87    case PIPE_QUERY_TIME_ELAPSED:
  88       sq->start = 1000*os_time_get();
  89       break;
  90    case PIPE_QUERY_SO_STATISTICS:
  91       sq->so.num_primitives_written = 0;
  92       sq->so.primitives_storage_needed = 0;
  93       break;
  94    case PIPE_QUERY_GPU_FINISHED:
  95       break;
  96    default:
  97       assert(0);
  98       break;
  99    }
 100    softpipe->active_query_count++;
 101    softpipe->dirty |= SP_NEW_QUERY;
 102 }
 103
 104
 105 static void
 106 softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
 107 {
 108    struct softpipe_context *softpipe = softpipe_context( pipe );
 109    struct softpipe_query *sq = softpipe_query(q);
 110
 111    softpipe->active_query_count--;
 112    switch (sq->type) {
 113    case PIPE_QUERY_OCCLUSION_COUNTER:
 114       sq->end = softpipe->occlusion_count;
 115       break;
 116    case PIPE_QUERY_TIME_ELAPSED:
 117       sq->end = 1000*os_time_get();
 118       break;
 119    case PIPE_QUERY_SO_STATISTICS:
 120       sq->so.num_primitives_written =
 121          softpipe->so_stats.num_primitives_written;
 122       sq->so.primitives_storage_needed =
 123          softpipe->so_stats.primitives_storage_needed;
 124       break;
 125    case PIPE_QUERY_GPU_FINISHED:
 126       break;
 127    default:
 128       assert(0);
 129       break;
 130    }
 131    softpipe->dirty |= SP_NEW_QUERY;
 132 }
 133
 134
 135 static boolean
 136 softpipe_get_query_result(struct pipe_context *pipe,
 137                           struct pipe_query *q,
 138                           boolean wait,
 139                           void *vresult)
 140 {
 141    struct softpipe_query *sq = softpipe_query(q);
 142    uint64_t *result = (uint64_t*)vresult;
 143
 144    switch (sq->type) {
 145    case PIPE_QUERY_SO_STATISTICS:
 146       memcpy(vresult, &sq->so,
 147              sizeof(struct pipe_query_data_so_statistics));
 148       break;
 149    case PIPE_QUERY_GPU_FINISHED:
 150       *result = TRUE;
 151       break;
 152    default:
 153       *result = sq->end - sq->start;
 154       break;
 155    }
 156    return TRUE;
 157 }
 158
 159
 160 /**
 161  * Called by rendering function to check rendering is conditional.
 162  * \return TRUE if we should render, FALSE if we should skip rendering
 163  */
 164 boolean
 165 softpipe_check_render_cond(struct softpipe_context *sp)
 166 {
 167    struct pipe_context *pipe = &sp->pipe;
 168    boolean b, wait;
 169    uint64_t result;
 170
 171    if (!sp->render_cond_query) {
 172       return TRUE;  /* no query predicate, draw normally */
 173    }
 174
 175    wait = (sp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
 176            sp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
 177
 178    b = pipe->get_query_result(pipe, sp->render_cond_query, wait, &result);
 179    if (b)
 180       return result > 0;
 181    else
 182       return TRUE;
 183 }
 184
 185
 186 void softpipe_init_query_funcs(struct softpipe_context *softpipe )
 187 {
 188    softpipe->pipe.create_query = softpipe_create_query;
 189    softpipe->pipe.destroy_query = softpipe_destroy_query;
 190    softpipe->pipe.begin_query = softpipe_begin_query;
 191    softpipe->pipe.end_query = softpipe_end_query;
 192    softpipe->pipe.get_query_result = softpipe_get_query_result;
 193 }
 194
 195