MemoryConventionalBuffers property (ILEADRaster)
Remarks
This property represents the number
of buffers in conventional memory that will cache the disk tiles. It is
used when working with tiled images, which have disk tiles. The swap buffers
will greatly improve the access to these disk tiles. The default is 1
(one swap buffer will be used to cache the disk tiles).
This property specifies how many
buffers should be used:
>0, MemoryConventionalBuffers indicates the number of swap buffers
<0, - MemoryConventionalBuffers indicates the percentage of the total of
disk tiles. For example, -50 means the number of buffers is half of the
disk tiles will be used.
0, no swap buffers will be used.
This uses the least amount of memory.
It is useful to have more than one
swap buffer when you have an algorithm that constantly reads data going
up and down. Usually, the data is read in one direction (from top to bottom
or bottom to top) – in this case, one swap buffer will be enough. Also,
if you only view a certain portion of the image, you might benefit from
having enough swap buffers to cache the visible portion of the image (or
the bitmap’s region).
The buffers are dynamic: when data is being read/written to a disk tile,
a cache buffer is created (if permitted and there is enough memory). If
the maximum number of cache buffers for that bitmap has been reached,
the cache buffer for the last used tile will be deleted and used for the
new tile.
See Also