I'm having a bit of trouble getting any zoom shader to work. I want to make a simple zoom feature, that will zoom in and out of a layer with the mouse wheel. This should be done with a shader - as it doesn't mess with the positions of the objects.
I seem to remember getting it to work before, but i can't seem to work it out now! But I also remember there was a problem where sometimes sprites would have some crazy distortion put on them (is this to do with the 1 pixel border you are meant to use?)
EDIT - I have found my old file where I have correctly made this - But there's still the problem that when objects pass below 0pixels (0,0 co-ords) even though my virtual height and width is set to -1 (infinite) the objects disappear, and it distorts them strangely before they finally go invisible... Anyone know if this can be fixed?
Any help would be appreciated.