I was wondering if this would be possible with Play Canvas.
In Unity I often layer 2 normal maps and to do it I use 3 map channels,
The first Channel is for the texture, the 2nd is for lightmaps and the third is for a second normal map.
I know the current shader can’t do this, but if we wrote a custom shader to do it, would the 3rd channel be in the model to take advantage of?