src/gallium/drivers/llvmpipe/lp_query.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * Copyright 2010 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /* Authors:
  30  *    Keith Whitwell, Qicheng Christopher Li, Brian Paul
  31  */
  32
  33 #include "draw/draw_context.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_memory.h"
  36 #include "lp_context.h"
  37 #include "lp_flush.h"
  38 #include "lp_fence.h"
  39 #include "lp_query.h"
  40 #include "lp_state.h"
  41
  42
  43 static struct llvmpipe_query *llvmpipe_query( struct pipe_query *p )
  44 {
  45    return (struct llvmpipe_query *)p;
  46 }
  47
  48 static struct pipe_query *
  49 llvmpipe_create_query(struct pipe_context *pipe,
  50                       unsigned type)
  51 {
  52    struct llvmpipe_query *pq;
  53
  54    assert(type == PIPE_QUERY_OCCLUSION_COUNTER);
  55
  56    pq = CALLOC_STRUCT( llvmpipe_query );
  57    if (pq) {
  58       pipe_mutex_init(pq->mutex);
  59    }
  60
  61    return (struct pipe_query *) pq;
  62 }
  63
  64
  65 static void
  66 llvmpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
  67 {
  68    struct llvmpipe_query *pq = llvmpipe_query(q);
  69    /* query might still be in process if we never waited for the result */
  70    if (!pq->done) {
  71       llvmpipe_finish(pipe, __FUNCTION__);
  72    }
  73
  74    pipe_mutex_destroy(pq->mutex);
  75    FREE(pq);
  76 }
  77
  78
  79 static boolean
  80 llvmpipe_get_query_result(struct pipe_context *pipe,
  81                           struct pipe_query *q,
  82                           boolean wait,
  83                           void *vresult)
  84 {
  85    struct llvmpipe_query *pq = llvmpipe_query(q);
  86    uint64_t *result = (uint64_t *)vresult;
  87
  88    if (!pq->done) {
  89       if (wait) {
  90          llvmpipe_finish(pipe, __FUNCTION__);
  91       }
  92       /* this is a bit inconsequent but should be ok */
  93       else {
  94          llvmpipe_flush(pipe, 0, NULL, __FUNCTION__);
  95       }
  96    }
  97
  98    if (pq->done) {
  99       *result = pq->result;
 100    }
 101
 102    return pq->done;
 103 }
 104
 105
 106 static void
 107 llvmpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
 108 {
 109    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 110    struct llvmpipe_query *pq = llvmpipe_query(q);
 111
 112    /* Check if the query is already in the scene.  If so, we need to
 113     * flush the scene now.  Real apps shouldn't re-use a query in a
 114     * frame of rendering.
 115     */
 116    if (pq->binned) {
 117       llvmpipe_finish(pipe, __FUNCTION__);
 118    }
 119
 120    lp_setup_begin_query(llvmpipe->setup, pq);
 121
 122    llvmpipe->active_query_count++;
 123    llvmpipe->dirty |= LP_NEW_QUERY;
 124 }
 125
 126
 127 static void
 128 llvmpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
 129 {
 130    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 131    struct llvmpipe_query *pq = llvmpipe_query(q);
 132
 133    lp_setup_end_query(llvmpipe->setup, pq);
 134
 135    assert(llvmpipe->active_query_count);
 136    llvmpipe->active_query_count--;
 137    llvmpipe->dirty |= LP_NEW_QUERY;
 138 }
 139
 140
 141 void llvmpipe_init_query_funcs(struct llvmpipe_context *llvmpipe )
 142 {
 143    llvmpipe->pipe.create_query = llvmpipe_create_query;
 144    llvmpipe->pipe.destroy_query = llvmpipe_destroy_query;
 145    llvmpipe->pipe.begin_query = llvmpipe_begin_query;
 146    llvmpipe->pipe.end_query = llvmpipe_end_query;
 147    llvmpipe->pipe.get_query_result = llvmpipe_get_query_result;
 148 }
 149
 150