material water and terrain paint

Development Rendering
1

I have 2 questions

  • Reflecting in the water is 4.8 Material ? tutorial or example?
  • Field as the material is painted “texture depends rotating position”?
2

Ey i have create water and foam… but my grass is affected by foam. is posible disable foam in grass? see image

ae56567f5c3ae96f7053fcc9540217a9o.png
ae56567f5c3ae96f7053fcc9540217a9o.png806×662 732 KB

3

other image with mode buffer visualization RBG

hierba_foam.png
hierba_foam.png672×528 317 KB

4

No help? please :DD