Black spots on terrain when texturing

Development Rendering
, , , , , ,
1

Hello,

So while I was texturing my terrain I noticed black spots appearing on the terrain almost like noise when I overlayed two different textures next to each other or on top of one another. This only occurred if I used the individual normal maps for each of the textures. Not sure how to smooth it out if at all.

http://puu.sh/jz1Du/5ad743ce73.jpg

http://puu.sh/jz1F2/21a85e531c.jpg

Material currently looks like this:

http://puu.sh/jz29d/da26bf29ed.jpg

http://puu.sh/jz2bF/622a106aa9.jpg

http://puu.sh/jz2ed/6650930a2b.jpg

2

I solved the problem, I had to route the alpha channel of the texture/normal map to the height param of the layer blend node and set up another param for LB alpha blend, and now the textures blend seamlessly and all the black spots are gone.