#version 300 es

// Tree Creator Optimized Bark surface shader from Unity 4.x,
// shadow caster pass. Used to not do dead code elimination
// properly, i.e. was leaving normal map sample in the fragment shader.

#define gl_FragColor _glesFragData[0]
#define gl_FragData _glesFragData

layout(location = 0) out mediump vec4 _glesFragData[4];
float xll_saturate_f( float x) {
  return clamp( x, 0.0, 1.0);
}

struct SurfaceOutput {
    lowp vec3 Albedo;
    lowp vec3 Normal;
    lowp vec3 Emission;
    mediump float Specular;
    lowp float Gloss;
    lowp float Alpha;
};

struct LeafSurfaceOutput {
    lowp vec3 Albedo;
    lowp vec3 Normal;
    lowp vec3 Emission;
    lowp float Translucency;
    mediump float Specular;
    lowp float Gloss;
    lowp float Alpha;
};

struct Input {
    highp vec2 uv_MainTex;
    lowp vec4 color;
};

struct v2f_surf {
    highp vec4 pos;
};

uniform lowp vec4 _Color;
uniform lowp vec3 _TranslucencyColor;
uniform lowp float _TranslucencyViewDependency;
uniform mediump float _ShadowStrength;

uniform sampler2D _MainTex;
uniform sampler2D _BumpSpecMap;
uniform sampler2D _TranslucencyMap;

lowp vec3 UnpackNormalDXT5nm( in lowp vec4 packednormal ) {
    lowp vec3 normal;
    normal.xy = ((packednormal.wy * 2.0) - 1.0);
    normal.z = sqrt((1.0 - xll_saturate_f(dot( normal.xy, normal.xy))));
    return normal;
}
void surf( in Input IN, inout SurfaceOutput o ) {
    lowp vec4 c = texture( _MainTex, IN.uv_MainTex);
    o.Albedo = ((c.xyz * _Color.xyz) * IN.color.w);
    lowp vec4 trngls = texture( _TranslucencyMap, IN.uv_MainTex);
    o.Gloss = (trngls.w * _Color.x);
    o.Alpha = c.w;
    mediump vec4 norspc = texture( _BumpSpecMap, IN.uv_MainTex);
    o.Specular = norspc.x;
    o.Normal = UnpackNormalDXT5nm( norspc);
}
lowp vec4 frag_surf( in v2f_surf IN ) {
    Input surfIN;
    SurfaceOutput o;
    o.Albedo = vec3(0.0);
    o.Emission = vec3(0.0);
    o.Specular = 0.0;
    o.Alpha = 0.0;
    o.Gloss = 0.0;
    surf (surfIN, o);
    return vec4(0.0);
}
void main() {
    lowp vec4 xl_retval;
    v2f_surf xlt_IN;
    xlt_IN.pos = vec4(0.0);
    xl_retval = frag_surf( xlt_IN);
    gl_FragData[0] = vec4(xl_retval);
}