You can use this shader only with a compatible GPU. Despite the stylization, the math behind the shaders is quite complicated and specially Durink and Waterink are a bit heavier shaders. Not so strong CPUs may result in not having enough power to run Durink and CUDA GPU is highly recommended.
Basic texture mapping is WINDOW. I wanted to achieve a flat look at the final result. There are Ratio Fix node controllers to adjust the offset created by changing the camera resolution ratio.
Durink has a slider to define the ratio between object and window mapping.