Cutout shaders cause tile distortion

[zeteginara]

I switched the material of one of my tilemaps to use the tk2d CutoutVertexColor shader, and now a few of the tiles seem to 'pick up' parts of other tiles.

You can see some examples in the texture view here:

This one:

And this one:


It doesn't get obvious until you see it in game:

Like this:

Or this:


It's really weird because I have a couple other tilesets in my game that use the CutoutVertexColor shader and the same settings, and they don't have this problem.  Did I miss something, or have I actually found a bug?

[unikronsoftware]

Check that you have 1 pixel of padding in sprite collection settings, that will almost certainly help with this. Also open up the image in photoshop and look at the colors / alpha channel, make sure there arent pixely bits with weird alpha values in there...

[zeteginara]

Solved.  Using Paint.NET, with the wand at 10% tolerance, I deleted all the crap that was apparently in the alpha channel.