Copypixel and memory

Hi all,

I am going to start using copypixel and I wonder if I am understanding the concept well. I am having doubts about memory use. This is my question: If I have an external image (tile map) I loaded , each time I use copypixel to copy a region from this tile map, I am using additional memory or only the map is located in memory?

In my application I need to copy a bitmap region from a tile map to a variable (var 1) and then copy another region from this var 1 to a second one (var 2). My concern is to increase the use of memory.

Thanks in advance for your answer.

Costa