>>1010943
>>1010953

3dsmax has shipped with an example of such a shader since way back, I don't think it even works with max anymore unless you rewrite it a bit to run under dx12. Here's my understanding of the important bits and what they do. In 'Shadow of the Colossus' There must've also been some UV offset to read a different diameter alpha texture on each pass, the max example seem to omit that bit but you prob get the idea if you understand anything about shaders, just offset your UV's each pass to read a different texture space according to how your texture is organized.