baxslash's suggestion was what I needed.
I was looking for the functions in the Object section, didn't think to look in the Image section since I thought it would be an object property rather than an image one.
The weird result I was talking about, is this image(it's hard to see since its a png with only white and transparency but you can just make it out thanks to the off-white colour of this forum background)...
...applied to a flat hexagon model with SetImageWrap mode as 0 or not using the SetImageWrap functions at all...
...then the same image applied to the same model using SetImageWrap mode as 1...