I’m having a bit of trouble with textures with alpha. It seems I always get this ugly edge around the solid (white) parts of the alpha. Does anyone have any idea what could cause this?
I first discovered it when I was trying to make a tree and saw that all the leaves had this ugly border around them. So I made this scene with a plane infront of a cube, and I put a green image with a somewhat advanced alpha on it, just so that I could see more clearly what was going on.
Here you can see the green image with the alphachannel shown next to it, and the rendered image showing the ugly edge.