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
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
#ifndef SP_TILE_CACHE_H
#define SP_TILE_CACHE_H
#include "pipe/p_compiler.h"
#include "sp_texture.h"
struct softpipe_tile_cache;
/**
* Cache tile size (width and height). This needs to be a power of two.
*/
#define TILE_SIZE_LOG2 6
#define TILE_SIZE (1 << TILE_SIZE_LOG2)
#define TILE_ADDR_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1 - TILE_SIZE_LOG2)
/**
* Surface tile address as a union for fast compares.
*/
union tile_address {
struct {
unsigned x:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
unsigned y:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
unsigned invalid:1;
unsigned pad:15;
} bits;
unsigned value;
};
struct softpipe_cached_tile
{
union {
float color[TILE_SIZE][TILE_SIZE][4];
uint color32[TILE_SIZE][TILE_SIZE];
uint depth32[TILE_SIZE][TILE_SIZE];
ushort depth16[TILE_SIZE][TILE_SIZE];
ubyte stencil8[TILE_SIZE][TILE_SIZE];
ubyte any[1];
} data;
};
#define NUM_ENTRIES 50
struct softpipe_tile_cache
{
struct pipe_context *pipe;
struct pipe_surface *surface; /**< the surface we're caching */
struct pipe_transfer *transfer;
void *transfer_map;
union tile_address tile_addrs[NUM_ENTRIES];
struct softpipe_cached_tile *entries[NUM_ENTRIES];
uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32];
float clear_color[4]; /**< for color bufs */
uint clear_val; /**< for z+stencil */
boolean depth_stencil; /**< Is the surface a depth/stencil format? */
struct softpipe_cached_tile *tile; /**< scratch tile for clears */
union tile_address last_tile_addr;
struct softpipe_cached_tile *last_tile; /**< most recently retrieved tile */
};
extern struct softpipe_tile_cache *
sp_create_tile_cache( struct pipe_context *pipe );
extern void
sp_destroy_tile_cache(struct softpipe_tile_cache *tc);
extern void
sp_tile_cache_set_surface(struct softpipe_tile_cache *tc,
struct pipe_surface *sps);
extern struct pipe_surface *
sp_tile_cache_get_surface(struct softpipe_tile_cache *tc);
extern void
sp_tile_cache_map_transfers(struct softpipe_tile_cache *tc);
extern void
sp_tile_cache_unmap_transfers(struct softpipe_tile_cache *tc);
extern void
sp_flush_tile_cache(struct softpipe_tile_cache *tc);
extern void
sp_tile_cache_clear(struct softpipe_tile_cache *tc, const float *rgba,
uint clearValue);
extern struct softpipe_cached_tile *
sp_find_cached_tile(struct softpipe_tile_cache *tc,
union tile_address addr );
static INLINE union tile_address
tile_address( unsigned x,
unsigned y )
{
union tile_address addr;
addr.value = 0;
addr.bits.x = x / TILE_SIZE;
addr.bits.y = y / TILE_SIZE;
return addr;
}
/* Quickly retrieve tile if it matches last lookup.
*/
static INLINE struct softpipe_cached_tile *
sp_get_cached_tile(struct softpipe_tile_cache *tc,
int x, int y )
{
union tile_address addr = tile_address( x, y );
if (tc->last_tile_addr.value == addr.value)
return tc->last_tile;
return sp_find_cached_tile( tc, addr );
}
#endif /* SP_TILE_CACHE_H */
|
