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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/**************************************************************************
*
* 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 Jose Fonseca <jrfonseca@tungstengraphics.com>
*/
#include "pipe/internal/p_winsys_screen.h"
#include "util/u_memory.h"
#include "pb_buffer.h"
#include "pb_winsys.h"
/**
* User buffers are special buffers that initially reference memory
* held by the user but which may if necessary copy that memory into
* device memory behind the scenes, for submission to hardware.
*
* These are particularly useful when the referenced data is never
* submitted to hardware at all, in the particular case of software
* vertex processing.
*/
struct pb_user_buffer
{
struct pb_buffer base;
void *data;
};
extern const struct pb_vtbl pb_user_buffer_vtbl;
static INLINE struct pb_user_buffer *
pb_user_buffer(struct pb_buffer *buf)
{
assert(buf);
assert(buf->vtbl == &pb_user_buffer_vtbl);
return (struct pb_user_buffer *)buf;
}
static void
pb_user_buffer_destroy(struct pb_buffer *buf)
{
assert(buf);
FREE(buf);
}
static void *
pb_user_buffer_map(struct pb_buffer *buf,
unsigned flags)
{
return pb_user_buffer(buf)->data;
}
static void
pb_user_buffer_unmap(struct pb_buffer *buf)
{
/* No-op */
}
static enum pipe_error
pb_user_buffer_validate(struct pb_buffer *buf,
struct pb_validate *vl,
unsigned flags)
{
assert(0);
return PIPE_ERROR;
}
static void
pb_user_buffer_fence(struct pb_buffer *buf,
struct pipe_fence_handle *fence)
{
assert(0);
}
static void
pb_user_buffer_get_base_buffer(struct pb_buffer *buf,
struct pb_buffer **base_buf,
unsigned *offset)
{
*base_buf = buf;
*offset = 0;
}
const struct pb_vtbl
pb_user_buffer_vtbl = {
pb_user_buffer_destroy,
pb_user_buffer_map,
pb_user_buffer_unmap,
pb_user_buffer_validate,
pb_user_buffer_fence,
pb_user_buffer_get_base_buffer
};
struct pipe_buffer *
pb_winsys_user_buffer_create(struct pipe_winsys *winsys,
void *data,
unsigned bytes)
{
struct pb_user_buffer *buf = CALLOC_STRUCT(pb_user_buffer);
if(!buf)
return NULL;
buf->base.base.refcount = 1;
buf->base.base.size = bytes;
buf->base.base.alignment = 0;
buf->base.base.usage = 0;
buf->base.vtbl = &pb_user_buffer_vtbl;
buf->data = data;
return &buf->base.base;
}
void *
pb_winsys_buffer_map(struct pipe_winsys *winsys,
struct pipe_buffer *buf,
unsigned flags)
{
(void)winsys;
return pb_map(pb_buffer(buf), flags);
}
void
pb_winsys_buffer_unmap(struct pipe_winsys *winsys,
struct pipe_buffer *buf)
{
(void)winsys;
pb_unmap(pb_buffer(buf));
}
void
pb_winsys_buffer_destroy(struct pipe_winsys *winsys,
struct pipe_buffer *buf)
{
(void)winsys;
pb_destroy(pb_buffer(buf));
}
void
pb_init_winsys(struct pipe_winsys *winsys)
{
winsys->user_buffer_create = pb_winsys_user_buffer_create;
winsys->buffer_map = pb_winsys_buffer_map;
winsys->buffer_unmap = pb_winsys_buffer_unmap;
winsys->buffer_destroy = pb_winsys_buffer_destroy;
}
|
