My landscape material consists of four materials that show each material on the exact position where i want them to show up, using alpha masks. With the landscape material setup as shown in the picture it is all good (using only 1 diffuse and 1 Normalmap texture per material).
But if I add one more single texture, for example a roughness texture, the landscape material is not visible on the landscape anymore, just the grey/ white checker material.
Since I want to use a bit more advanced materials than just a single diffuse and normal map, this is a big problem for me.
When I only had three materials connected it worked well with more complex material setup, but after I added more materials and masks, I ran into this problem.
Anybody has a clue what is causing this?