IOS Splat Map Shader - using Vertex Lit - is it possible?

Im trying to get a terrain splat map to work on IOS while also under vertex lit rendering. Is this even possible?

Help or a friendly point in the right direction would be great thanks.


As far as im aware splat shaders are not possible under vertex lit rendering due to splat maps requiring the ability to separate the texture by channel

It might be possible to some way toward a splat map by lerping various textures by their alpha channel and compiling it together later but this sound very expensive for such an effect.

Use forward rendering it opens many doors!