UVs are just numbers. 0 is the beginning, 1 is the end. UVs are infinitely wrapped (by default settings), so they always fit within 0 and 1. That means 1.1 is the same as 0.1, 1.2 = 0.2, 999999.3 = 0.3. Red channel is U, green channel is V. After all, the colors are just representation of a two-item vector. A pair of…