1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #ifndef SP_TEX_TILE_CACHE_H
29 #define SP_TEX_TILE_CACHE_H
30
31
32 #include "pipe/p_compiler.h"
33 #include "sp_limits.h"
34
35
36 struct softpipe_context;
37 struct softpipe_tex_tile_cache;
38
39
40 /**
41 * Cache tile size (width and height). This needs to be a power of two.
42 */
43 #define TILE_SIZE_LOG2 6
44 #define TILE_SIZE (1 << TILE_SIZE_LOG2)
45
46
47 #define TEX_ADDR_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1 - TILE_SIZE_LOG2)
48 #define TEX_Z_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1)
49
50 /**
51 * Texture tile address as a union for fast compares.
52 */
53 union tex_tile_address {
54 struct {
55 unsigned x:TEX_ADDR_BITS; /* 16K / TILE_SIZE */
56 unsigned y:TEX_ADDR_BITS; /* 16K / TILE_SIZE */
57 unsigned z:TEX_Z_BITS; /* 16K -- z not tiled */
58 unsigned face:3;
59 unsigned level:4;
60 unsigned invalid:1;
61 } bits;
62 uint64_t value;
63 };
64
65
66 struct softpipe_tex_cached_tile
67 {
68 union tex_tile_address addr;
69 union {
70 float color[TILE_SIZE][TILE_SIZE][4];
71 unsigned int colorui[TILE_SIZE][TILE_SIZE][4];
72 int colori[TILE_SIZE][TILE_SIZE][4];
73 } data;
74 };
75
76 #define NUM_ENTRIES 50
77
78 struct softpipe_tex_tile_cache
79 {
80 struct pipe_context *pipe;
81 struct pipe_transfer *transfer;
82 void *transfer_map;
83
84 struct pipe_resource *texture; /**< if caching a texture */
85 unsigned timestamp;
86
87 struct softpipe_tex_cached_tile entries[NUM_ENTRIES];
88
89 struct pipe_transfer *tex_trans;
90 void *tex_trans_map;
91 int tex_face, tex_level, tex_z;
92
93 unsigned swizzle_r;
94 unsigned swizzle_g;
95 unsigned swizzle_b;
96 unsigned swizzle_a;
97 enum pipe_format format;
98
99 struct softpipe_tex_cached_tile *last_tile; /**< most recently retrieved tile */
100 };
101
102
103 extern struct softpipe_tex_tile_cache *
104 sp_create_tex_tile_cache( struct pipe_context *pipe );
105
106 extern void
107 sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache *tc);
108
109
110 extern void
111 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache *tc);
112
113 extern void
114 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache *tc);
115
116 extern void
117 sp_tex_tile_cache_set_sampler_view(struct softpipe_tex_tile_cache *tc,
118 struct pipe_sampler_view *view);
119
120 void
121 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache *tc);
122
123 extern void
124 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache *tc);
125
126
127
128 extern const struct softpipe_tex_cached_tile *
129 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache *tc,
130 union tex_tile_address addr );
131
132 static INLINE union tex_tile_address
tex_tile_address(unsigned x,unsigned y,unsigned z,unsigned face,unsigned level)133 tex_tile_address( unsigned x,
134 unsigned y,
135 unsigned z,
136 unsigned face,
137 unsigned level )
138 {
139 union tex_tile_address addr;
140
141 addr.value = 0;
142 addr.bits.x = x / TILE_SIZE;
143 addr.bits.y = y / TILE_SIZE;
144 addr.bits.z = z;
145 addr.bits.face = face;
146 addr.bits.level = level;
147
148 return addr;
149 }
150
151 /* Quickly retrieve tile if it matches last lookup.
152 */
153 static INLINE const struct softpipe_tex_cached_tile *
sp_get_cached_tile_tex(struct softpipe_tex_tile_cache * tc,union tex_tile_address addr)154 sp_get_cached_tile_tex(struct softpipe_tex_tile_cache *tc,
155 union tex_tile_address addr )
156 {
157 if (tc->last_tile->addr.value == addr.value)
158 return tc->last_tile;
159
160 return sp_find_cached_tile_tex( tc, addr );
161 }
162
163
164 #endif /* SP_TEX_TILE_CACHE_H */
165
166