Hello.I have a problem in setting the roughness in 5 way blended texture.How Can I set different roughness for different textures.Like for texture 1 the roughness should be 0.5 for second texture 0.6,for third texture 0.3,for fourth texture 0 and for fifth texture 0.2.
Bump! Please Help 
Simply do the same blend for Roughness too with Lerp
if that’s an option you could put the roughness value into the alpha channel of the texture and then use a component mask on the result of your blend to just extract the roughness. less instructions, but might not be an option depending on your texture compression settings.
oh ok I will try thanks for the answer 