{
    "terrain_opaque": {
        "vertexShader": "shaders/renderchunk.vertex",
        "fragmentShader": "shaders/renderchunk.fragment",

        "defines": [ "LOW_PRECISION", "TEXEL_AA", "ATLAS_TEXTURE" ],

        "samplerStates": [
          {
            "samplerIndex": 0,
            "textureFilter" : "TexelAA"
          },
          {
            "samplerIndex": 1,
            "textureFilter": "Bilinear"
          }
        ]
    },

    "terrain_opaque_seasons:terrain_opaque": {
      "defines": [ "SEASONS" ],
      "samplerStates": [
        {
          "samplerIndex": 0,
          "textureFilter" : "TexelAA"
        },
        {
          "samplerIndex": 1,
          "textureFilter": "Bilinear"
        },
        {
          "samplerIndex": 2,
          "textureFilter": "Point"
        }
      ]

    },

    "terrain_blend:terrain_opaque": {
        "defines": [ "BLEND" ],
        "states": [
          "Blending"
        ]
    },

    "terrain_water:terrain_blend": {
        "defines": [ "NEAR_WATER" ],

        "states": [
          "PolygonOffset",
          "Blending"
        ],

        // Fix z-fighting by offsetting water polygons by epsilon
        "polygonOffsetLevel": 0.1
    },

    "terrain_blend_below:terrain_blend": {
        "states": [ "InvertCulling", "Blending", "EnableStencilTest" ]
    },

    "terrain_water_below:terrain_water": {
        "states": [ "InvertCulling", "Blending", "EnableStencilTest" ]
    },

    "terrain_doubleside:terrain_opaque": {
        "states": [ "DisableCulling" ]
    },

    "terrain_alpha_single_side:terrain_opaque": {
        "defines": [ "ALPHA_TEST" ],
        "states": [ "EnableAlphaToCoverage" ]
    },

    "terrain_alpha_seasons:terrain_opaque": {
      "defines": [ "ALPHA_TEST", "SEASONS" ],
      "states": [ "DisableCulling", "EnableAlphaToCoverage" ],
      "samplerStates": [
        {
          "samplerIndex": 0,
          "textureFilter" : "TexelAA"
        },
        {
          "samplerIndex": 1,
          "textureFilter": "Bilinear"
        },
        {
          "samplerIndex": 2,
          "textureFilter": "Point"
        }
      ]

    },

    "terrain_alpha:terrain_alpha_single_side": {
        "states": [ "DisableCulling", "PolygonOffset" ],

        // z-fighting fix
        "polygonOffsetLevel" : 0.1
    },

    "terrain_opaque_fog:terrain_opaque": {
        "defines": [ "FOG" ]
    },

    "terrain_water_fog:terrain_water": {
        "defines": [ "FOG", "BLEND", "NEAR_WATER" ]
    },

    "terrain_water_below_fog:terrain_water_fog": {
        "states": [ "InvertCulling", "Blending", "EnableStencilTest" ]
    },

    "terrain_blend_fog:terrain_blend": {
        "defines": [ "FOG", "BLEND" ]
    },

    "terrain_blend_below_fog:terrain_blend_fog": {
        "states": [ "InvertCulling", "Blending", "EnableStencilTest" ]
    },

    "terrain_doubleside_fog:terrain_doubleside": {
        "defines": [ "FOG" ]
    },

    "terrain_alpha_single_side_fog:terrain_alpha_single_side": {
        "defines": [ "FOG" ]
    },

    "terrain_alpha_fog:terrain_alpha": {
        "defines": [ "FOG" ]
    },

    "terrain_far:terrain_opaque": {
        "defines": [
            "FOG",
            "LOW_PRECISION"
        ]
    },

    "terrain_seasons_far:terrain_opaque_seasons": {
        "defines": [
            "FOG",
            "LOW_PRECISION"
        ]
    },

    "terrain_seasons_far_alpha:terrain_opaque_seasons": {
        "defines": [
            "FOG",
            "LOW_PRECISION",
            "SEASONS_FAR"
        ]
    },

	"terrain_fading_in:terrain_far": {
		"defines" : ["ALLOW_FADE"]
	},

    "terrain_seasons_fading_in:terrain_seasons_far": {
        "defines": [ "ALLOW_FADE" ]
    },

	"terrain_seasons_fading_in_alpha:terrain_seasons_far_alpha": {
		"defines" : ["ALLOW_FADE"]
	},

  "terrain_inside_block": {
    "depthFunc": "LessEqual",

    "vertexShader": "shaders/position.vertex",
    "fragmentShader": "shaders/current_color.fragment"
  }

}