The best way to try and explain something is to simplify it. In that effort, instead of using the regular terrain textures, I opted to use simple colors so as not to confuse the eye. Just try to remember while viewing these examples that the regular terrain textures, painted Desert or Basic Wood will do exactly the same thing. Well start with the simple A+B blend. In this blend we have two texture, texture A and texture B. These two textures will gradually blend into each other when combined. Texture A will dominate the lower portion (the base) of the object while texture B will dominate the upper portion.