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
|
/**************************************************************************
*
* Copyright 2007-2008 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.
*
**************************************************************************/
/**
* @file
* Constant State Object (CSO) cache.
*
* The basic idea is that the states are created via the
* create_state/bind_state/delete_state semantics. The driver is expected to
* perform as much of the Gallium state translation to whatever its internal
* representation is during the create call. Gallium then has a caching
* mechanism where it stores the created states. When the pipeline needs an
* actual state change, a bind call is issued. In the bind call the driver
* gets its already translated representation.
*
* Those semantics mean that the driver doesn't do the repeated translations
* of states on every frame, but only once, when a new state is actually
* created.
*
* Even on hardware that doesn't do any kind of state cache, it makes the
* driver look a lot neater, plus it avoids all the redundant state
* translations on every frame.
*
* Currently our constant state objects are:
* - alpha test
* - blend
* - depth stencil
* - fragment shader
* - rasterizer (old setup)
* - sampler
* - vertex shader
*
* Things that are not constant state objects include:
* - blend_color
* - clip_state
* - clear_color_state
* - constant_buffer
* - feedback_state
* - framebuffer_state
* - polygon_stipple
* - scissor_state
* - texture_state
* - viewport_state
*
* @author Zack Rusin <zack@tungstengraphics.com>
*/
#ifndef CSO_CACHE_H
#define CSO_CACHE_H
#include "pipe/p_context.h"
#include "pipe/p_state.h"
/* cso_hash.h is necessary for cso_hash_iter, as MSVC requires structures
* returned by value to be fully defined */
#include "cso_hash.h"
#ifdef __cplusplus
extern "C" {
#endif
enum cso_cache_type {
CSO_BLEND,
CSO_SAMPLER,
CSO_DEPTH_STENCIL_ALPHA,
CSO_RASTERIZER,
CSO_FRAGMENT_SHADER,
CSO_VERTEX_SHADER
};
typedef void (*cso_state_callback)(void *ctx, void *obj);
typedef void (*cso_sanitize_callback)(struct cso_hash *hash,
enum cso_cache_type type,
int max_size,
void *user_data);
struct cso_cache;
struct cso_blend {
struct pipe_blend_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
struct cso_depth_stencil_alpha {
struct pipe_depth_stencil_alpha_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
struct cso_rasterizer {
struct pipe_rasterizer_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
struct cso_fragment_shader {
struct pipe_shader_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
struct cso_vertex_shader {
struct pipe_shader_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
struct cso_sampler {
struct pipe_sampler_state state;
void *data;
cso_state_callback delete_state;
struct pipe_context *context;
};
unsigned cso_construct_key(void *item, int item_size);
struct cso_cache *cso_cache_create(void);
void cso_cache_delete(struct cso_cache *sc);
void cso_cache_set_sanitize_callback(struct cso_cache *sc,
cso_sanitize_callback cb,
void *user_data);
struct cso_hash_iter cso_insert_state(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type,
void *state);
struct cso_hash_iter cso_find_state(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type);
struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
unsigned hash_key, enum cso_cache_type type,
void *templ);
void cso_for_each_state(struct cso_cache *sc, enum cso_cache_type type,
cso_state_callback func, void *user_data);
void * cso_take_state(struct cso_cache *sc, unsigned hash_key,
enum cso_cache_type type);
void cso_set_maximum_cache_size(struct cso_cache *sc, int number);
int cso_maximum_cache_size(const struct cso_cache *sc);
#ifdef __cplusplus
}
#endif
#endif
|
