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
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/**
* Software-based region allocation and management.
* A hardware driver would override these functions.
*/
#include "sp_context.h"
#include "sp_region.h"
#include "sp_surface.h"
#include "main/imports.h"
static struct pipe_region *
sp_region_alloc(struct pipe_context *pipe,
GLuint cpp, GLuint pitch, GLuint height)
{
struct pipe_region *region = CALLOC_STRUCT(pipe_region);
if (!region)
return NULL;
region->refcount = 1;
region->cpp = cpp;
region->pitch = pitch;
region->height = height;
region->map = malloc(cpp * pitch * height);
return region;
}
static void
sp_region_release(struct pipe_context *pipe, struct pipe_region **region)
{
assert((*region)->refcount > 0);
(*region)->refcount--;
if ((*region)->refcount == 0) {
assert((*region)->map_refcount == 0);
#if 0
if ((*region)->pbo)
(*region)->pbo->region = NULL;
(*region)->pbo = NULL;
#endif
free(*region);
}
*region = NULL;
}
static GLubyte *
sp_region_map(struct pipe_context *pipe, struct pipe_region *region)
{
region->map_refcount++;
return region->map;
}
static void
sp_region_unmap(struct pipe_context *pipe, struct pipe_region *region)
{
region->map_refcount--;
}
void
sp_init_region_functions(struct softpipe_context *sp)
{
sp->pipe.region_alloc = sp_region_alloc;
sp->pipe.region_release = sp_region_release;
sp->pipe.region_map = sp_region_map;
sp->pipe.region_unmap = sp_region_unmap;
/* XXX lots of other region functions needed... */
}
|
