lp_query.c revision 946f432a08112148d743eb9faf6b27bb8cc7fa76 
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 "pipe/p_defines.h"
34#include "util/u_memory.h"
35#include "lp_context.h"
36#include "lp_query.h"
37#include "lp_state.h"
38
39struct llvmpipe_query {
40   uint64_t start;
41   uint64_t end;
42};
43
44
45static struct llvmpipe_query *llvmpipe_query( struct pipe_query *p )
46{
47   return (struct llvmpipe_query *)p;
48}
49
50static struct pipe_query *
51llvmpipe_create_query(struct pipe_context *pipe,
52		      unsigned type)
53{
54   assert(type == PIPE_QUERY_OCCLUSION_COUNTER);
55   return (struct pipe_query *)CALLOC_STRUCT( llvmpipe_query );
56}
57
58
59static void
60llvmpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
61{
62   FREE(q);
63}
64
65
66static void
67llvmpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
68{
69   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
70   struct llvmpipe_query *sq = llvmpipe_query(q);
71
72   sq->start = llvmpipe->occlusion_count;
73   llvmpipe->active_query_count++;
74   llvmpipe->dirty |= SP_NEW_QUERY;
75}
76
77
78static void
79llvmpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
80{
81   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
82   struct llvmpipe_query *sq = llvmpipe_query(q);
83
84   llvmpipe->active_query_count--;
85   sq->end = llvmpipe->occlusion_count;
86   llvmpipe->dirty |= SP_NEW_QUERY;
87}
88
89
90static boolean
91llvmpipe_get_query_result(struct pipe_context *pipe,
92			  struct pipe_query *q,
93			  boolean wait,
94			  uint64_t *result )
95{
96   struct llvmpipe_query *sq = llvmpipe_query(q);
97   *result = sq->end - sq->start;
98   return TRUE;
99}
100
101
102void llvmpipe_init_query_funcs(struct llvmpipe_context *llvmpipe )
103{
104   llvmpipe->pipe.create_query = llvmpipe_create_query;
105   llvmpipe->pipe.destroy_query = llvmpipe_destroy_query;
106   llvmpipe->pipe.begin_query = llvmpipe_begin_query;
107   llvmpipe->pipe.end_query = llvmpipe_end_query;
108   llvmpipe->pipe.get_query_result = llvmpipe_get_query_result;
109}
110
111
112