Hi guys so I just started learning Unreal two days ago. I encountered this problem when I tried to create my own texture material for building landscape. First off, whatever pictures I imported into Unreal, the engine always tells me " is not a power of two. Non power of two textures are never streamed and have no mipmaps. Proceed?" I dont quite understand what does this mean, is it the problem of my pictures? Second, when I create a material texture, this is always a seam on the texture, I attached some screenshots, if you look close, they are different from the default texture that Unreal provides to us. My own texture is somehow very small so when I put them all together they make up very annoy and obvious seams. Could anyone tell me how to fix these problems? Thank you guys, I am just a beginner of UE4, I really could use some help here.
My texture is the white, snow like one, the dirt texture is the default, I also attached my nodes.