Three layers blended 50/30/20 represented as 0.5, 0.3, and 0.2 in the alpha maps All alpha maps for blended layers total to 1.0 This is the style used by UE internally for blended layers
Layered
Three layers blended 50/30/20 represented as 0.5, 0.6, and 1.0 in the alpha maps Each alpha map only specifies the remainder from previous layers, so the last layer used will always be 1.0 Some other tools use this format
