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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/* Authors: Zack Rusin <zack@tungstengraphics.com>
*/
#include "cso_cache.h"
#include "cso_hash.h"
#if 1
static unsigned hash_key(const void *key, unsigned key_size)
{
unsigned *ikey = (unsigned *)key;
unsigned hash = 0, i;
assert(key_size % 4 == 0);
/* I'm sure this can be improved on:
*/
for (i = 0; i < key_size/4; i++)
hash ^= ikey[i];
return hash;
}
#else
static unsigned hash_key(const unsigned char *p, int n)
{
unsigned h = 0;
unsigned g;
while (n--) {
h = (h << 4) + *p++;
if ((g = (h & 0xf0000000)) != 0)
h ^= g >> 23;
h &= ~g;
}
return h;
}
#endif
unsigned cso_construct_key(void *item, int item_size)
{
return hash_key((item), item_size);
}
static struct cso_hash *_cso_hash_for_type(struct cso_cache *sc, enum cso_cache_type type)
{
struct cso_hash *hash = 0;
switch(type) {
case CSO_BLEND:
hash = sc->blend_hash;
break;
case CSO_SAMPLER:
hash = sc->sampler_hash;
break;
case CSO_DEPTH_STENCIL_ALPHA:
hash = sc->depth_stencil_hash;
break;
case CSO_RASTERIZER:
hash = sc->rasterizer_hash;
break;
case CSO_FRAGMENT_SHADER:
hash = sc->fs_hash;
break;
case CSO_VERTEX_SHADER:
hash = sc->vs_hash;
break;
}
return hash;
}
static int _cso_size_for_type(enum cso_cache_type type)
{
switch(type) {
case CSO_BLEND:
return sizeof(struct pipe_blend_state);
case CSO_SAMPLER:
return sizeof(struct pipe_sampler_state);
case CSO_DEPTH_STENCIL_ALPHA:
return sizeof(struct pipe_depth_stencil_alpha_state);
case CSO_RASTERIZER:
return sizeof(struct pipe_rasterizer_state);
case CSO_FRAGMENT_SHADER:
return sizeof(struct pipe_shader_state);
case CSO_VERTEX_SHADER:
return sizeof(struct pipe_shader_state);
}
return 0;
}
struct cso_hash_iter
cso_insert_state(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type,
void *state)
{
struct cso_hash *hash = _cso_hash_for_type(sc, type);
return cso_hash_insert(hash, hash_key, state);
}
struct cso_hash_iter
cso_find_state(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type)
{
struct cso_hash *hash = _cso_hash_for_type(sc, type);
return cso_hash_find(hash, hash_key);
}
struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type,
void *templ)
{
struct cso_hash_iter iter = cso_find_state(sc, hash_key, type);
int size = _cso_size_for_type(type);
while (!cso_hash_iter_is_null(iter)) {
void *iter_data = cso_hash_iter_data(iter);
if (!memcmp(iter_data, templ, size))
return iter;
iter = cso_hash_iter_next(iter);
}
return iter;
}
void * cso_take_state(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type)
{
struct cso_hash *hash = _cso_hash_for_type(sc, type);
return cso_hash_take(hash, hash_key);
}
struct cso_cache *cso_cache_create(void)
{
struct cso_cache *sc = malloc(sizeof(struct cso_cache));
sc->blend_hash = cso_hash_create();
sc->sampler_hash = cso_hash_create();
sc->depth_stencil_hash = cso_hash_create();
sc->rasterizer_hash = cso_hash_create();
sc->fs_hash = cso_hash_create();
sc->vs_hash = cso_hash_create();
return sc;
}
void cso_cache_delete(struct cso_cache *sc)
{
assert(sc);
cso_hash_delete(sc->blend_hash);
cso_hash_delete(sc->sampler_hash);
cso_hash_delete(sc->depth_stencil_hash);
cso_hash_delete(sc->rasterizer_hash);
cso_hash_delete(sc->fs_hash);
cso_hash_delete(sc->vs_hash);
free(sc);
}
|
