GIMP Library Reference Manual | ||||
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Top | Description |
GimpTile; void gimp_tile_ref (GimpTile *tile
); void gimp_tile_ref_zero (GimpTile *tile
); void gimp_tile_unref (GimpTile *tile
,gboolean dirty
); void gimp_tile_flush (GimpTile *tile
); void gimp_tile_cache_size (gulong kilobytes
); void gimp_tile_cache_ntiles (gulong ntiles
);
typedef struct { guint ewidth; /* the effective width of the tile */ guint eheight; /* the effective height of the tile */ guint bpp; /* the bytes per pixel (1, 2, 3 or 4 ) */ guint tile_num; /* the number of this tile within the drawable */ guint16 ref_count; /* reference count for the tile */ guint dirty : 1; /* is the tile dirty? has it been modified? */ guint shadow: 1; /* is this a shadow tile */ guchar *data; /* the pixel data for the tile */ GimpDrawable *drawable; /* the drawable this tile came from */ } GimpTile;
void gimp_tile_cache_size (gulong kilobytes
);
Sets the size of the tile cache on the plug-in side. The tile cache
is used to reduce the number of tiles exchanged between the GIMP core
and the plug-in. See also gimp_tile_cache_ntiles()
.
|
new cache size in kilobytes |
void gimp_tile_cache_ntiles (gulong ntiles
);
Sets the size of the tile cache on the plug-in side. This function
is similar to gimp_tile_cache_size()
but allows to specify the
number of tiles directly.
If your plug-in access pixels tile-by-tile, it doesn't need a tile cache at all. If however the plug-in accesses drawable pixel data row-by-row, it should set the tile cache large enough to hold the number of tiles per row. Double this size if your plug-in uses shadow tiles.
|
number of tiles that should fit into the cache |