gimptile

## gimptile gimptile — Functions for working with tiles. |

## Synopsis

                        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);

## Description

Functions for working with tiles.

## Details

### GimpTile

    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;

### gimp_tile_ref ()

    void                gimp_tile_ref                       (GimpTile *tile);

### gimp_tile_ref_zero ()

    void                gimp_tile_ref_zero                  (GimpTile *tile);

### gimp_tile_unref ()

    void                gimp_tile_unref                     (GimpTile *tile,
                                                             gboolean dirty);

### gimp_tile_flush ()

    void                gimp_tile_flush                     (GimpTile *tile);

### gimp_tile_cache_size ()

    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()`.

`kilobytes` : | new cache size in kilobytes

### gimp_tile_cache_ntiles ()

    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.

`ntiles` : | number of tiles that should fit into the cache