// streams
      _StreamFlowParams("Stream Flow Params", Vector) = (0.4,0.5,0.3, 0.2)
      _StreamBlend("Stream Blend", Range(1, 60)) = 40
      _StreamNormalFoam("Stream Normal/Foam", Vector) = (0.35, 12, 0, 0)
      _StreamMax("Max Stream", Range(0,1)) = 1
      _StreamNormal("Normal Map", 2D) = "white" {}
      _StreamUVScales("Stream UV Scales", Vector) = (70, 70, 70, 70)
      _StreamTint("Stream Tint", Color) = (0.5, 0.5, 0.5, 1.0)