1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #ifndef SP_TILE_CACHE_H
29 #define SP_TILE_CACHE_H
32 #include "pipe/p_compiler.h"
35 struct softpipe_tile_cache
;
39 * Cache tile size (width and height). This needs to be a power of two.
44 /* If we need to support > 4096, just expand this to be a 64 bit
45 * union, or consider tiling in Z as well.
49 unsigned x
:6; /* 4096 / TILE_SIZE */
50 unsigned y
:6; /* 4096 / TILE_SIZE */
58 struct softpipe_cached_tile
60 union tile_address addr
;
62 float color
[TILE_SIZE
][TILE_SIZE
][4];
63 uint color32
[TILE_SIZE
][TILE_SIZE
];
64 uint depth32
[TILE_SIZE
][TILE_SIZE
];
65 ushort depth16
[TILE_SIZE
][TILE_SIZE
];
66 ubyte stencil8
[TILE_SIZE
][TILE_SIZE
];
71 #define NUM_ENTRIES 50
75 #define MAX_WIDTH 4096
76 #define MAX_HEIGHT 4096
79 struct softpipe_tile_cache
81 struct pipe_context
*pipe
;
82 struct pipe_surface
*surface
; /**< the surface we're caching */
83 struct pipe_transfer
*transfer
;
86 struct softpipe_cached_tile entries
[NUM_ENTRIES
];
87 uint clear_flags
[(MAX_WIDTH
/ TILE_SIZE
) * (MAX_HEIGHT
/ TILE_SIZE
) / 32];
88 float clear_color
[4]; /**< for color bufs */
89 uint clear_val
; /**< for z+stencil, or packed color clear value */
90 boolean depth_stencil
; /**< Is the surface a depth/stencil format? */
92 struct softpipe_cached_tile tile
; /**< scratch tile for clears */
94 struct softpipe_cached_tile
*last_tile
; /**< most recently retrieved tile */
98 extern struct softpipe_tile_cache
*
99 sp_create_tile_cache( struct pipe_context
*pipe
);
102 sp_destroy_tile_cache(struct softpipe_tile_cache
*tc
);
105 sp_tile_cache_set_surface(struct softpipe_tile_cache
*tc
,
106 struct pipe_surface
*sps
);
108 extern struct pipe_surface
*
109 sp_tile_cache_get_surface(struct softpipe_tile_cache
*tc
);
112 sp_tile_cache_map_transfers(struct softpipe_tile_cache
*tc
);
115 sp_tile_cache_unmap_transfers(struct softpipe_tile_cache
*tc
);
118 sp_flush_tile_cache(struct softpipe_tile_cache
*tc
);
121 sp_tile_cache_clear(struct softpipe_tile_cache
*tc
, const float *rgba
,
124 extern struct softpipe_cached_tile
*
125 sp_find_cached_tile(struct softpipe_tile_cache
*tc
,
126 union tile_address addr
);
129 static INLINE
union tile_address
130 tile_address( unsigned x
,
133 union tile_address addr
;
136 addr
.bits
.x
= x
/ TILE_SIZE
;
137 addr
.bits
.y
= y
/ TILE_SIZE
;
142 /* Quickly retrieve tile if it matches last lookup.
144 static INLINE
struct softpipe_cached_tile
*
145 sp_get_cached_tile(struct softpipe_tile_cache
*tc
,
148 union tile_address addr
= tile_address( x
, y
);
150 if (tc
->last_tile
->addr
.value
== addr
.value
)
151 return tc
->last_tile
;
153 return sp_find_cached_tile( tc
, addr
);
159 #endif /* SP_TILE_CACHE_H */