The UVW Transform Texture takes an input texture and applies a map to transform the input texture’s UV layout on top of the input texture’s own UV coordinate transformation. This concept becomes more useful when used in conjunction with other mapping textures to combine different scales/orientations/translations of that same texture to create a larger detail range.
HOW TO USE
Open the Node editor and prepare the setup as you see in the picture below. In this setup, the "Compare" node used for the condition of the 2 same image texture and "Uvw Transform" node applied one of them to add detail. It's very useful to create interesting effects like kaleidoscope or adding details for the existing texture. You don't have to use compare node like in the example below. You can use any node beside compare, for example mix, cosine mix, add, multiply or subtract.