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
|
/**********************************************************
* Copyright 2008-2009 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, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
**********************************************************/
#ifndef SVGA_SCREEN_CACHE_H_
#define SVGA_SCREEN_CACHE_H_
#include "svga_types.h"
#include "svga_reg.h"
#include "svga3d_reg.h"
#include "os/os_thread.h"
#include "util/u_double_list.h"
/* Guess the storage size of cached surfaces and try and keep it under
* this amount:
*/
#define SVGA_HOST_SURFACE_CACHE_BYTES 16*1024*1024
/* Maximum number of discrete surfaces in the cache:
*/
#define SVGA_HOST_SURFACE_CACHE_SIZE 1024
/* Number of hash buckets:
*/
#define SVGA_HOST_SURFACE_CACHE_BUCKETS 256
struct svga_winsys_surface;
struct svga_screen;
/**
* Same as svga_winsys_screen::surface_create.
*/
struct svga_host_surface_cache_key
{
SVGA3dSurfaceFlags flags;
SVGA3dSurfaceFormat format;
SVGA3dSize size;
uint32_t numFaces:24;
uint32_t numMipLevels:7;
uint32_t cachable:1; /* False if this is a shared surface */
};
struct svga_host_surface_cache_entry
{
/**
* Head for the LRU list, svga_host_surface_cache::unused, and
* svga_host_surface_cache::empty
*/
struct list_head head;
/** Head for the bucket lists. */
struct list_head bucket_head;
struct svga_host_surface_cache_key key;
struct svga_winsys_surface *handle;
struct pipe_fence_handle *fence;
};
/**
* Cache of the host surfaces.
*
* A cache entry can be in the following stages:
* 1. empty
* 2. holding a buffer in a validate list
* 3. holding a flushed buffer (not in any validate list) with an active fence
* 4. holding a flushed buffer with an expired fence
*
* An entry progresses from 1 -> 2 -> 3 -> 4. When we need an entry to put a
* buffer into we preferencial take from 1, or from the least recentely used
* buffer from 3/4.
*/
struct svga_host_surface_cache
{
pipe_mutex mutex;
/* Unused buffers are put in buckets to speed up lookups */
struct list_head bucket[SVGA_HOST_SURFACE_CACHE_BUCKETS];
/* Entries with unused buffers, ordered from most to least recently used
* (3 and 4) */
struct list_head unused;
/* Entries with buffers still in validate lists (2) */
struct list_head validated;
/** Empty entries (1) */
struct list_head empty;
/** The actual storage for the entries */
struct svga_host_surface_cache_entry entries[SVGA_HOST_SURFACE_CACHE_SIZE];
};
void
svga_screen_cache_cleanup(struct svga_screen *svgascreen);
void
svga_screen_cache_flush(struct svga_screen *svgascreen,
struct pipe_fence_handle *fence);
enum pipe_error
svga_screen_cache_init(struct svga_screen *svgascreen);
struct svga_winsys_surface *
svga_screen_surface_create(struct svga_screen *svgascreen,
struct svga_host_surface_cache_key *key);
void
svga_screen_surface_destroy(struct svga_screen *svgascreen,
const struct svga_host_surface_cache_key *key,
struct svga_winsys_surface **handle);
#endif /* SVGA_SCREEN_CACHE_H_ */
|
