DigReal, Thanks, I will do more experimenting with it tonight. So I assume that you talking about the bitmap of distribution map. it should be 1024x1024. That is interesting because I thought I used an higher resolution. did you have any problem if you change the texture to blend 2 textures using same distribution map. That was what was orginally causing me problems. By the way, I mention this problem on e-ons forum. Stewart