1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 VMWARE 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.
26 **************************************************************************/
29 #include "util/u_inlines.h"
30 #include "util/u_memory.h"
31 #include "util/u_math.h"
33 #include "lp_screen.h"
34 #include "lp_buffer.h"
36 #include "state_tracker/sw_winsys.h"
39 llvmpipe_buffer_map(struct pipe_screen
*screen
,
40 struct pipe_buffer
*buf
,
43 struct llvmpipe_buffer
*llvmpipe_buf
= llvmpipe_buffer(buf
);
44 return llvmpipe_buf
->data
;
49 llvmpipe_buffer_unmap(struct pipe_screen
*screen
,
50 struct pipe_buffer
*buf
)
56 llvmpipe_buffer_destroy(struct pipe_buffer
*buf
)
58 struct llvmpipe_buffer
*sbuf
= llvmpipe_buffer(buf
);
60 if (!sbuf
->userBuffer
)
61 align_free(sbuf
->data
);
67 static struct pipe_buffer
*
68 llvmpipe_buffer_create(struct pipe_screen
*screen
,
73 struct llvmpipe_buffer
*buffer
= CALLOC_STRUCT(llvmpipe_buffer
);
75 pipe_reference_init(&buffer
->base
.reference
, 1);
76 buffer
->base
.screen
= screen
;
77 buffer
->base
.alignment
= MAX2(alignment
, 16);
78 buffer
->base
.usage
= usage
;
79 buffer
->base
.size
= size
;
81 buffer
->data
= align_malloc(size
, alignment
);
88 * Create buffer which wraps user-space data.
90 static struct pipe_buffer
*
91 llvmpipe_user_buffer_create(struct pipe_screen
*screen
,
95 struct llvmpipe_buffer
*buffer
;
97 buffer
= CALLOC_STRUCT(llvmpipe_buffer
);
101 pipe_reference_init(&buffer
->base
.reference
, 1);
102 buffer
->base
.screen
= screen
;
103 buffer
->base
.size
= bytes
;
104 buffer
->userBuffer
= TRUE
;
107 return &buffer
->base
;
112 llvmpipe_init_screen_buffer_funcs(struct pipe_screen
*screen
)
114 screen
->buffer_create
= llvmpipe_buffer_create
;
115 screen
->user_buffer_create
= llvmpipe_user_buffer_create
;
116 screen
->buffer_map
= llvmpipe_buffer_map
;
117 screen
->buffer_unmap
= llvmpipe_buffer_unmap
;
118 screen
->buffer_destroy
= llvmpipe_buffer_destroy
;