1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* \file
* Implementation of client buffer (also designated as "user buffers"), which
* are just state-tracker owned data masqueraded as buffers.
*
* \author José Fonseca <jrfonseca@tungstengraphics.com>
*/
#include "pb_buffer.h"
struct client_buffer
{
struct pipe_buffer base;
void *data;
};
extern const struct pipe_buffer_vtbl client_buffer_vtbl;
static inline struct client_buffer *
client_buffer(struct pipe_buffer *buf)
{
assert(buf);
assert(buf->vtbl == &client_buffer_vtbl);
return (struct client_buffer *)buf;
}
static void
client_buffer_reference(struct pipe_buffer *buf)
{
/* No-op */
}
static void
client_buffer_release(struct pipe_buffer *buf)
{
assert(buf);
free(buf);
}
static void *
client_buffer_map(struct pipe_buffer *buf,
unsigned flags)
{
return client_buffer(buf)->data;
}
static void
client_buffer_unmap(struct pipe_buffer *buf)
{
/* No-op */
}
static void
client_buffer_get_base_buffer(struct pipe_buffer *buf,
struct pipe_buffer **base_buf,
unsigned *offset)
{
*base_buf = buf;
*offset = 0;
}
const struct pipe_buffer_vtbl
client_buffer_vtbl = {
client_buffer_reference,
client_buffer_release,
client_buffer_map,
client_buffer_unmap,
client_buffer_get_base_buffer
};
struct pipe_buffer *
client_buffer_create(void *data)
{
struct client_buffer *buf;
buf = (struct client_buffer *)malloc(sizeof(struct client_buffer));
if(!buf)
return NULL;
buf->base.vtbl = &client_buffer_vtbl;
buf->data = data;
return &buf->base;
}
|
