Pardon those necropost =) Guys, does i get it correctly, what in case we have a plane filled with G=0, and a smooth brush stroke somewhere with a G=1, since we have a smooth brush borders (and anyway have a vertex color interpolation across vertices), we will get a transition on the brush edges from T0 to T2, from T2 to T3…
@Medvish regarding Your questions: *correct *the textures are neutral and colorized in the shader *correct But It's a bit more complicated :) ATM UE4 does not support texture arrays but that feature developed and currently under review. https://github.com/EpicGames/UnrealEngine/pull/2340 You could do it without the array…