diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_tile_cache.h')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_tile_cache.h | 88 |
1 files changed, 84 insertions, 4 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_tile_cache.h b/src/gallium/drivers/llvmpipe/lp_tile_cache.h index 9e830e9def..06e9587da6 100644 --- a/src/gallium/drivers/llvmpipe/lp_tile_cache.h +++ b/src/gallium/drivers/llvmpipe/lp_tile_cache.h @@ -44,11 +44,25 @@ struct llvmpipe_tile_cache; #define 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 tile_address { + struct { + unsigned x:6; /* 4096 / TILE_SIZE */ + unsigned y:6; /* 4096 / TILE_SIZE */ + unsigned z:12; /* 4096 -- z not tiled */ + unsigned face:3; + unsigned level:4; + unsigned invalid:1; + } bits; + unsigned value; +}; + struct llvmpipe_cached_tile { - int x, y; /**< pos of tile in window coords */ - int z, face, level; /**< Extra texture indexes */ + union tile_address addr; union { float color[TILE_SIZE][TILE_SIZE][4]; uint color32[TILE_SIZE][TILE_SIZE]; @@ -59,6 +73,39 @@ struct llvmpipe_cached_tile } data; }; +#define NUM_ENTRIES 50 + + +/** XXX move these */ +#define MAX_WIDTH 2048 +#define MAX_HEIGHT 2048 + + +struct llvmpipe_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_tile entries[NUM_ENTRIES]; + uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32]; + float clear_color[4]; /**< for color bufs */ + uint clear_val; /**< for z+stencil, or packed color clear value */ + boolean depth_stencil; /**< Is the surface a depth/stencil format? */ + + struct pipe_transfer *tex_trans; + void *tex_trans_map; + int tex_face, tex_level, tex_z; + + struct llvmpipe_cached_tile tile; /**< scratch tile for clears */ + + struct llvmpipe_cached_tile *last_tile; /**< most recently retrieved tile */ +}; + extern struct llvmpipe_tile_cache * lp_create_tile_cache( struct pipe_screen *screen ); @@ -97,8 +144,41 @@ extern struct llvmpipe_cached_tile * lp_get_cached_tile(struct llvmpipe_tile_cache *tc, int x, int y); extern const struct llvmpipe_cached_tile * -lp_get_cached_tile_tex(struct llvmpipe_tile_cache *tc, int x, int y, int z, - int face, int level); +lp_find_cached_tile_tex(struct llvmpipe_tile_cache *tc, + union tile_address addr ); + +static INLINE const union tile_address +tile_address( unsigned x, + unsigned y, + unsigned z, + unsigned face, + unsigned level ) +{ + union tile_address addr; + + addr.value = 0; + addr.bits.x = x / TILE_SIZE; + addr.bits.y = y / 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_tile * +lp_get_cached_tile_tex(struct llvmpipe_tile_cache *tc, + union tile_address addr ) +{ + if (tc->last_tile->addr.value == addr.value) + return tc->last_tile; + + return lp_find_cached_tile_tex( tc, addr ); +} + + #endif /* LP_TILE_CACHE_H */ |