local tex_base   = "water\\water_studen"
local tex_nmap   = "water\\water_normal"
local tex_dist   = "water\\water_dudv"
local tex_env0   = "$user$sky0"              -- "sky\\sky_8_cube"
local tex_env1   = "$user$sky1"              -- "sky\\sky_8_cube"
local tex_leaves = "ui\\ui_empty"

function normal(shader, t_base, t_second, t_detail)
    shader:begin("water_soft", "water_soft")
        :sorting(2, false)
        :blend(true, blend.srcalpha, blend.invsrcalpha)
        :zb(true, false)
        :distort(true)
        :fog(true)
    shader:sampler("s_base"):texture(tex_base)
    shader:sampler("s_nmap"):texture(tex_nmap)
    shader:sampler("s_env0"):texture(tex_env0):clamp()
    shader:sampler("s_env1"):texture(tex_env1):clamp()
    shader:sampler("s_position"):texture("$user$position"):f_none()

    shader:sampler("s_leaves"):texture(tex_leaves):wrap():f_anisotropic()
end

function l_special(shader, t_base, t_second, t_detail)
    shader:begin("waterd_soft", "waterd_soft")
        :sorting(2, true)
        :blend(true, blend.srcalpha, blend.invsrcalpha)
        :zb(true, false)
        :fog(false)
        :distort(true)
    shader:sampler("s_base"):texture(tex_base)
    shader:sampler("s_distort"):texture(tex_dist)
    shader:sampler("s_position"):texture("$user$position"):f_none()
end

--[[
function normal                (shader, t_base, t_second, t_detail)
  shader:begin                ("waterd","waterd")
        : sorting        (2, true)
        : blend                (true,blend.srcalpha,blend.invsrcalpha)
        : zb                (true,false)
        : fog                (false)
        : distort        (true)
  shader:sampler        ("s_base")       :texture  (tex_base)
  shader:sampler        ("s_distort")    :texture  (tex_dist)
end
]]
