Image sheet calls and memory

Audio and Graphics
#1

Before I run some test I’m wondering if anyone knows how Corona handles multiple sprites calling the same image sheet - as in they each call the same sheet from scratch.

I have a custom sprite module where every sprite calls a new image sheet that might be identical the previously called image sheets. 

I’m now using hundreds of sprites instead of a handful and wondering if calling the same image sheet multiple times will increase the texture memory or if Corona “knows” that they are identical somehow and, thus, prevents texture bloat.

[lua]

– every time I make a sprite it calls its own image sheet

local spriteInfo = {-- my sprite info}

–  “sheet” and “sheetInfo” are loaded from a table

local myImageSheet = graphics.newImageSheet( “spritesheet/”…sheet…".png", sheetInfo:getSheet(name) )

local mySprite = display.newSprite( group, myImageSheet , spriteInfo)

[/lua] 

#2

If I’m not mistaken, each texture is loaded once and cached, and this cached texture is used for other sprites, so the texture memory requirements shouldn’t be affected.

#3

That’s what I’m hoping!

#4

Oh, I just thought of something else.  If there are a bunch of references to an image sheet, it might be hard to control removing the image sheet (imageSheet = nil).