1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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_TILE_CACHE_H
29 #define SP_TILE_CACHE_H
30
31
32 #include "pipe/p_compiler.h"
33 #include "sp_texture.h"
34
35
36 struct softpipe_tile_cache;
37
38
39 /**
40 * Cache tile size (width and height). This needs to be a power of two.
41 */
42 #define TILE_SIZE_LOG2 6
43 #define TILE_SIZE (1 << TILE_SIZE_LOG2)
44
45
46 #define TILE_ADDR_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1 - TILE_SIZE_LOG2)
47
48
49 /**
50 * Surface tile address as a union for fast compares.
51 */
52 union tile_address {
53 struct {
54 unsigned x:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
55 unsigned y:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
56 unsigned invalid:1;
57 unsigned layer:8;
58 unsigned pad:7;
59 } bits;
60 unsigned value;
61 };
62
63
64 struct softpipe_cached_tile
65 {
66 union {
67 float color[TILE_SIZE][TILE_SIZE][4];
68 uint color32[TILE_SIZE][TILE_SIZE];
69 uint depth32[TILE_SIZE][TILE_SIZE];
70 ushort depth16[TILE_SIZE][TILE_SIZE];
71 ubyte stencil8[TILE_SIZE][TILE_SIZE];
72 uint colorui128[TILE_SIZE][TILE_SIZE][4];
73 int colori128[TILE_SIZE][TILE_SIZE][4];
74 uint64_t depth64[TILE_SIZE][TILE_SIZE];
75 ubyte any[1];
76 } data;
77 };
78
79 #define NUM_ENTRIES 50
80
81
82 struct softpipe_tile_cache
83 {
84 struct pipe_context *pipe;
85 struct pipe_surface *surface; /**< the surface we're caching */
86 struct pipe_transfer **transfer;
87 void **transfer_map;
88 int num_maps;
89
90 union tile_address tile_addrs[NUM_ENTRIES];
91 struct softpipe_cached_tile *entries[NUM_ENTRIES];
92 uint *clear_flags;
93 uint clear_flags_size;
94 union pipe_color_union clear_color; /**< for color bufs */
95 uint64_t clear_val; /**< for z+stencil */
96 boolean depth_stencil; /**< Is the surface a depth/stencil format? */
97
98 struct softpipe_cached_tile *tile; /**< scratch tile for clears */
99
100 union tile_address last_tile_addr;
101 struct softpipe_cached_tile *last_tile; /**< most recently retrieved tile */
102 };
103
104
105 extern struct softpipe_tile_cache *
106 sp_create_tile_cache( struct pipe_context *pipe );
107
108 extern void
109 sp_destroy_tile_cache(struct softpipe_tile_cache *tc);
110
111 extern void
112 sp_tile_cache_set_surface(struct softpipe_tile_cache *tc,
113 struct pipe_surface *sps);
114
115 extern struct pipe_surface *
116 sp_tile_cache_get_surface(struct softpipe_tile_cache *tc);
117
118 extern void
119 sp_flush_tile_cache(struct softpipe_tile_cache *tc);
120
121 extern void
122 sp_tile_cache_clear(struct softpipe_tile_cache *tc,
123 const union pipe_color_union *color,
124 uint64_t clearValue);
125
126 extern struct softpipe_cached_tile *
127 sp_find_cached_tile(struct softpipe_tile_cache *tc,
128 union tile_address addr );
129
130
131 static inline union tile_address
tile_address(unsigned x,unsigned y,unsigned layer)132 tile_address( unsigned x,
133 unsigned y, unsigned layer )
134 {
135 union tile_address addr;
136
137 addr.value = 0;
138 addr.bits.x = x / TILE_SIZE;
139 addr.bits.y = y / TILE_SIZE;
140 addr.bits.layer = layer;
141 return addr;
142 }
143
144 /* Quickly retrieve tile if it matches last lookup.
145 */
146 static inline struct softpipe_cached_tile *
sp_get_cached_tile(struct softpipe_tile_cache * tc,int x,int y,int layer)147 sp_get_cached_tile(struct softpipe_tile_cache *tc,
148 int x, int y, int layer )
149 {
150 union tile_address addr = tile_address( x, y, layer );
151
152 if (tc->last_tile_addr.value == addr.value)
153 return tc->last_tile;
154
155 return sp_find_cached_tile( tc, addr );
156 }
157
158
159
160
161 #endif /* SP_TILE_CACHE_H */
162
163