summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/llvmpipe/lp_buffer.c
blob: 66f1f8e13837b772fdae240339009d0a56725ff6 (plain)
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
/**************************************************************************
 *
 * Copyright 2009 VMware, Inc.
 * 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 VMWARE 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.
 *
 **************************************************************************/


#include "util/u_memory.h"
#include "util/u_math.h"

#include "lp_winsys.h"
#include "lp_screen.h"
#include "lp_texture.h"
#include "lp_buffer.h"


static void *
llvmpipe_buffer_map(struct pipe_screen *screen,
                    struct pipe_buffer *buf,
                    unsigned flags)
{
   struct llvmpipe_buffer *llvmpipe_buf = llvmpipe_buffer(buf);
   return llvmpipe_buf->data;
}


static void
llvmpipe_buffer_unmap(struct pipe_screen *screen,
                      struct pipe_buffer *buf)
{
}


static void
llvmpipe_buffer_destroy(struct pipe_buffer *buf)
{
   struct llvmpipe_buffer *sbuf = llvmpipe_buffer(buf);

   if (!sbuf->userBuffer)
      align_free(sbuf->data);
      
   FREE(sbuf);
}


static struct pipe_buffer *
llvmpipe_buffer_create(struct pipe_screen *screen,
                       unsigned alignment,
                       unsigned usage,
                       unsigned size)
{
   struct llvmpipe_buffer *buffer = CALLOC_STRUCT(llvmpipe_buffer);

   pipe_reference_init(&buffer->base.reference, 1);
   buffer->base.screen = screen;
   buffer->base.alignment = MAX2(alignment, 16);
   buffer->base.usage = usage;
   buffer->base.size = size;

   buffer->data = align_malloc(size, alignment);

   return &buffer->base;
}


/**
 * Create buffer which wraps user-space data.
 */
static struct pipe_buffer *
llvmpipe_user_buffer_create(struct pipe_screen *screen,
                            void *ptr,
                            unsigned bytes)
{
   struct llvmpipe_buffer *buffer;

   buffer = CALLOC_STRUCT(llvmpipe_buffer);
   if(!buffer)
      return NULL;

   pipe_reference_init(&buffer->base.reference, 1);
   buffer->base.screen = screen;
   buffer->base.size = bytes;
   buffer->userBuffer = TRUE;
   buffer->data = ptr;

   return &buffer->base;
}


static void
llvmpipe_fence_reference(struct pipe_screen *screen,
                         struct pipe_fence_handle **ptr,
                         struct pipe_fence_handle *fence)
{
}


static int
llvmpipe_fence_signalled(struct pipe_screen *screen,
                         struct pipe_fence_handle *fence,
                         unsigned flag)
{
   return 0;
}


static int
llvmpipe_fence_finish(struct pipe_screen *screen,
                      struct pipe_fence_handle *fence,
                      unsigned flag)
{
   return 0;
}


void
llvmpipe_init_screen_buffer_funcs(struct pipe_screen *screen)
{
   screen->buffer_create = llvmpipe_buffer_create;
   screen->user_buffer_create = llvmpipe_user_buffer_create;
   screen->buffer_map = llvmpipe_buffer_map;
   screen->buffer_unmap = llvmpipe_buffer_unmap;
   screen->buffer_destroy = llvmpipe_buffer_destroy;

   screen->fence_reference = llvmpipe_fence_reference;
   screen->fence_signalled = llvmpipe_fence_signalled;
   screen->fence_finish = llvmpipe_fence_finish;

}