| /************************************************************************** |
| * |
| * 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 LP_TEX_CACHE_H |
| #define LP_TEX_CACHE_H |
| |
| |
| #include "pipe/p_compiler.h" |
| |
| |
| struct llvmpipe_context; |
| struct llvmpipe_tex_tile_cache; |
| |
| |
| /** |
| * Cache tile size (width and height). This needs to be a power of two. |
| */ |
| #define TEX_TILE_SIZE 64 |
| |
| |
| /* If we need to support > 4096, just expand this to be a 64 bit |
| * union, or consider tiling in Z as well. |
| */ |
| union tex_tile_address { |
| struct { |
| unsigned x:6; /* 4096 / TEX_TILE_SIZE */ |
| unsigned y:6; /* 4096 / TEX_TILE_SIZE */ |
| unsigned z:12; /* 4096 -- z not tiled */ |
| unsigned face:3; |
| unsigned level:4; |
| unsigned invalid:1; |
| } bits; |
| unsigned value; |
| }; |
| |
| |
| struct llvmpipe_cached_tex_tile |
| { |
| union tex_tile_address addr; |
| uint8_t color[TEX_TILE_SIZE][TEX_TILE_SIZE][4]; |
| }; |
| |
| #define NUM_ENTRIES 50 |
| |
| |
| /** XXX move these */ |
| #define MAX_TEX_WIDTH 2048 |
| #define MAX_TEX_HEIGHT 2048 |
| |
| |
| struct llvmpipe_tex_tile_cache |
| { |
| struct pipe_screen *screen; |
| struct pipe_surface *surface; /**< the surface we're caching */ |
| struct pipe_transfer *transfer; |
| void *transfer_map; |
| |
| struct pipe_texture *texture; /**< if caching a texture */ |
| unsigned timestamp; |
| |
| struct llvmpipe_cached_tex_tile entries[NUM_ENTRIES]; |
| |
| struct pipe_transfer *tex_trans; |
| void *tex_trans_map; |
| int tex_face, tex_level, tex_z; |
| |
| struct llvmpipe_cached_tex_tile *last_tile; /**< most recently retrieved tile */ |
| }; |
| |
| |
| extern struct llvmpipe_tex_tile_cache * |
| lp_create_tex_tile_cache( struct pipe_screen *screen ); |
| |
| extern void |
| lp_destroy_tex_tile_cache(struct llvmpipe_tex_tile_cache *tc); |
| |
| extern void |
| lp_tex_tile_cache_map_transfers(struct llvmpipe_tex_tile_cache *tc); |
| |
| extern void |
| lp_tex_tile_cache_unmap_transfers(struct llvmpipe_tex_tile_cache *tc); |
| |
| extern void |
| lp_tex_tile_cache_set_texture(struct llvmpipe_tex_tile_cache *tc, |
| struct pipe_texture *texture); |
| |
| void |
| lp_tex_tile_cache_validate_texture(struct llvmpipe_tex_tile_cache *tc); |
| |
| extern const struct llvmpipe_cached_tex_tile * |
| lp_find_cached_tex_tile(struct llvmpipe_tex_tile_cache *tc, |
| union tex_tile_address addr ); |
| |
| static INLINE const union tex_tile_address |
| tex_tile_address( unsigned x, |
| unsigned y, |
| unsigned z, |
| unsigned face, |
| unsigned level ) |
| { |
| union tex_tile_address addr; |
| |
| addr.value = 0; |
| addr.bits.x = x / TEX_TILE_SIZE; |
| addr.bits.y = y / TEX_TILE_SIZE; |
| addr.bits.z = z; |
| addr.bits.face = face; |
| addr.bits.level = level; |
| |
| return addr; |
| } |
| |
| /* Quickly retrieve tile if it matches last lookup. |
| */ |
| static INLINE const struct llvmpipe_cached_tex_tile * |
| lp_get_cached_tex_tile(struct llvmpipe_tex_tile_cache *tc, |
| union tex_tile_address addr ) |
| { |
| if (tc->last_tile->addr.value == addr.value) |
| return tc->last_tile; |
| |
| return lp_find_cached_tex_tile( tc, addr ); |
| } |
| |
| |
| #endif /* LP_TEX_CACHE_H */ |
| |