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_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 pad:15; 58 } bits; 59 unsigned value; 60 }; 61 62 63 struct softpipe_cached_tile 64 { 65 union { 66 float color[TILE_SIZE][TILE_SIZE][4]; 67 uint color32[TILE_SIZE][TILE_SIZE]; 68 uint depth32[TILE_SIZE][TILE_SIZE]; 69 ushort depth16[TILE_SIZE][TILE_SIZE]; 70 ubyte stencil8[TILE_SIZE][TILE_SIZE]; 71 uint colorui128[TILE_SIZE][TILE_SIZE][4]; 72 int colori128[TILE_SIZE][TILE_SIZE][4]; 73 uint64_t depth64[TILE_SIZE][TILE_SIZE]; 74 ubyte any[1]; 75 } data; 76 }; 77 78 #define NUM_ENTRIES 50 79 80 81 struct softpipe_tile_cache 82 { 83 struct pipe_context *pipe; 84 struct pipe_surface *surface; /**< the surface we're caching */ 85 struct pipe_transfer *transfer; 86 void *transfer_map; 87 88 union tile_address tile_addrs[NUM_ENTRIES]; 89 struct softpipe_cached_tile *entries[NUM_ENTRIES]; 90 uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32]; 91 union pipe_color_union clear_color; /**< for color bufs */ 92 uint64_t clear_val; /**< for z+stencil */ 93 boolean depth_stencil; /**< Is the surface a depth/stencil format? */ 94 95 struct softpipe_cached_tile *tile; /**< scratch tile for clears */ 96 97 union tile_address last_tile_addr; 98 struct softpipe_cached_tile *last_tile; /**< most recently retrieved tile */ 99 }; 100 101 102 extern struct softpipe_tile_cache * 103 sp_create_tile_cache( struct pipe_context *pipe ); 104 105 extern void 106 sp_destroy_tile_cache(struct softpipe_tile_cache *tc); 107 108 extern void 109 sp_tile_cache_set_surface(struct softpipe_tile_cache *tc, 110 struct pipe_surface *sps); 111 112 extern struct pipe_surface * 113 sp_tile_cache_get_surface(struct softpipe_tile_cache *tc); 114 115 extern void 116 sp_tile_cache_map_transfers(struct softpipe_tile_cache *tc); 117 118 extern void 119 sp_tile_cache_unmap_transfers(struct softpipe_tile_cache *tc); 120 121 extern void 122 sp_flush_tile_cache(struct softpipe_tile_cache *tc); 123 124 extern void 125 sp_tile_cache_clear(struct softpipe_tile_cache *tc, 126 const union pipe_color_union *color, 127 uint64_t clearValue); 128 129 extern struct softpipe_cached_tile * 130 sp_find_cached_tile(struct softpipe_tile_cache *tc, 131 union tile_address addr ); 132 133 134 static INLINE union tile_address 135 tile_address( unsigned x, 136 unsigned y ) 137 { 138 union tile_address addr; 139 140 addr.value = 0; 141 addr.bits.x = x / TILE_SIZE; 142 addr.bits.y = y / TILE_SIZE; 143 144 return addr; 145 } 146 147 /* Quickly retrieve tile if it matches last lookup. 148 */ 149 static INLINE struct softpipe_cached_tile * 150 sp_get_cached_tile(struct softpipe_tile_cache *tc, 151 int x, int y ) 152 { 153 union tile_address addr = tile_address( x, y ); 154 155 if (tc->last_tile_addr.value == addr.value) 156 return tc->last_tile; 157 158 return sp_find_cached_tile( tc, addr ); 159 } 160 161 162 163 164 #endif /* SP_TILE_CACHE_H */ 165 166