Shader "Mixall/TwoSided"
{
    Properties
    {
        _Albedo ("Albedo", Color) = (1,1,1,1)
        _Alpha ("Alpha", Range(0,1)) = 0.5
        _MainTex ("Albedo (RGB)", 2D) = "white" {}
        _BumpMap("Bumpmap", 2D) = "bump" {}
        _Smoothness("Smoothness", Range(0,1)) = 0.0
    }
    SubShader
    {
        Tags { "RenderType" = "TransparentCutOut" "Queue" = "AlphaTest" "IgnoreProjector" = "True" }
        Cull off
        LOD 200

            CGPROGRAM
            // Physically based Standard lighting model, and enable shadows on all light types
            #pragma surface surf Standard alphatest:_Alpha
            #pragma surface surf Lambert

            sampler2D _MainTex;
            sampler2D _BumpMap;

            struct Input
            {
                float2 uv_MainTex;
                float2 uv_BumpMap;
            };

            float4 _Albedo;
            half _Smoothness;

            // Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
            // See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
            // #pragma instancing_options assumeuniformscaling
            UNITY_INSTANCING_BUFFER_START(Props)
                // put more per-instance properties here
            UNITY_INSTANCING_BUFFER_END(Props)

            void surf(Input IN, inout SurfaceOutputStandard o)
            {
                // Albedo comes from a texture tinted by color
                fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Albedo;
                o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
                o.Albedo = c.rgb;
                // Metallic and smoothness come from slider variables
                o.Smoothness = _Smoothness;
                o.Alpha = c.a;
            }
            ENDCG

        Pass
        {
            Tags { "LightMode" = "ShadowCaster" }

            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_shadowcaster
            #pragma multi_compile_instancing // allow instanced shadow pass for most of the shaders
            #include "UnityCG.cginc"

            // Use shader model 3.0 target, to get nicer looking lighting
            #pragma target 3.0

            struct v2f {
                V2F_SHADOW_CASTER;
                float2  uv : TEXCOORD1;
                UNITY_VERTEX_OUTPUT_STEREO
            };

            uniform float4 _MainTex_ST;

            v2f vert(appdata_base v)
            {
                v2f o;
                UNITY_SETUP_INSTANCE_ID(v);
                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
                TRANSFER_SHADOW_CASTER_NORMALOFFSET(o)
                o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
                return o;
            }

            uniform sampler2D _MainTex;
            uniform fixed _Alpha;
            uniform fixed4 _Albedo;

            float4 frag(v2f i) : SV_Target
            {
                fixed4 texcol = tex2D(_MainTex, i.uv);
                clip(texcol.a* _Albedo.a - _Alpha);

                SHADOW_CASTER_FRAGMENT(i)
            }
            ENDCG
        }
    }
    //FallBack "Transparent/Cutout/VertexLit"
}