when you use create meshes the shaders doesn't work, and when i use shaders on blocks the light map doesn't work. The blocks with shader effects can't drop shadows, only stencil shadows on other blocks without shader effects

is there a possibility to drop soften shadows with these kind of blocks?

or How can i create my own shadows for this kind of blocks?

for example : when i create a floor and a wall and i apply a parallax.fx it works good, but i doesn't see shadows why???