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_winsys.h"
34 #include "lp_screen.h"
35 #include "lp_texture.h"
36 #include "lp_buffer.h"
40 llvmpipe_buffer_map(struct pipe_screen
*screen
,
41 struct pipe_buffer
*buf
,
44 struct llvmpipe_buffer
*llvmpipe_buf
= llvmpipe_buffer(buf
);
45 return llvmpipe_buf
->data
;
50 llvmpipe_buffer_unmap(struct pipe_screen
*screen
,
51 struct pipe_buffer
*buf
)
57 llvmpipe_buffer_destroy(struct pipe_buffer
*buf
)
59 struct llvmpipe_buffer
*sbuf
= llvmpipe_buffer(buf
);
61 if (!sbuf
->userBuffer
)
62 align_free(sbuf
->data
);
68 static struct pipe_buffer
*
69 llvmpipe_buffer_create(struct pipe_screen
*screen
,
74 struct llvmpipe_buffer
*buffer
= CALLOC_STRUCT(llvmpipe_buffer
);
76 pipe_reference_init(&buffer
->base
.reference
, 1);
77 buffer
->base
.screen
= screen
;
78 buffer
->base
.alignment
= MAX2(alignment
, 16);
79 buffer
->base
.usage
= usage
;
80 buffer
->base
.size
= size
;
82 buffer
->data
= align_malloc(size
, alignment
);
89 * Create buffer which wraps user-space data.
91 static struct pipe_buffer
*
92 llvmpipe_user_buffer_create(struct pipe_screen
*screen
,
96 struct llvmpipe_buffer
*buffer
;
98 buffer
= CALLOC_STRUCT(llvmpipe_buffer
);
102 pipe_reference_init(&buffer
->base
.reference
, 1);
103 buffer
->base
.screen
= screen
;
104 buffer
->base
.size
= bytes
;
105 buffer
->userBuffer
= TRUE
;
108 return &buffer
->base
;
113 llvmpipe_fence_reference(struct pipe_screen
*screen
,
114 struct pipe_fence_handle
**ptr
,
115 struct pipe_fence_handle
*fence
)
121 llvmpipe_fence_signalled(struct pipe_screen
*screen
,
122 struct pipe_fence_handle
*fence
,
130 llvmpipe_fence_finish(struct pipe_screen
*screen
,
131 struct pipe_fence_handle
*fence
,
139 llvmpipe_init_screen_buffer_funcs(struct pipe_screen
*screen
)
141 screen
->buffer_create
= llvmpipe_buffer_create
;
142 screen
->user_buffer_create
= llvmpipe_user_buffer_create
;
143 screen
->buffer_map
= llvmpipe_buffer_map
;
144 screen
->buffer_unmap
= llvmpipe_buffer_unmap
;
145 screen
->buffer_destroy
= llvmpipe_buffer_destroy
;
147 screen
->fence_reference
= llvmpipe_fence_reference
;
148 screen
->fence_signalled
= llvmpipe_fence_signalled
;
149 screen
->fence_finish
= llvmpipe_fence_finish
;