Slider shader

// Made with Amplify Shader Editor
// Available at the Unity Asset Store - http://u3d.as/y3X
Shader "Johnny/SliderDrawer"
{
    Properties
    {
        [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
        _Color ("Tint", Color) = (1,1,1,1)

        _StencilComp ("Stencil Comparison", Float) = 8
        _Stencil ("Stencil ID", Float) = 0
        _StencilOp ("Stencil Operation", Float) = 0
        _StencilWriteMask ("Stencil Write Mask", Float) = 255
        _StencilReadMask ("Stencil Read Mask", Float) = 255

        _ColorMask ("Color Mask", Float) = 15

        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
        _FillRate("FillRate", Range( 0 , 1)) = 0
        _FIllColor("FIllColor", Color) = (0,0,0,0)
        _GhostFillRate("GhostFillRate", Range( 0 , 1)) = 0.9515373
        _ghostTextureBlend("ghostTextureBlend", Range( 0 , 1)) = 0
        _GhostColor("Ghost Color", Color) = (1,1,1,1)
        _backGroundTextureBlend("backGroundTextureBlend", Range( 0 , 1)) = 0
        _BackGroundColor("BackGroundColor", Color) = (0,0,0,1)
        _flashAmount("flashAmount", Range( 0 , 1)) = 0
    }

    SubShader
    {
        Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" "CanUseSpriteAtlas"="True" }

        Stencil
        {
            Ref [_Stencil]
            ReadMask [_StencilReadMask]
            WriteMask [_StencilWriteMask]
            CompFront [_StencilComp]
            PassFront [_StencilOp]
            FailFront Keep
            ZFailFront Keep
            CompBack Always
            PassBack Keep
            FailBack Keep
            ZFailBack Keep
        }


        Cull Off
        Lighting Off
        ZWrite Off
        ZTest LEqual
        Blend SrcAlpha OneMinusSrcAlpha
        ColorMask [_ColorMask]


        Pass
        {
            Name "Default"
        CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma target 3.0

            #include "UnityCG.cginc"
            #include "UnityUI.cginc"

            #pragma multi_compile __ UNITY_UI_CLIP_RECT
            #pragma multi_compile __ UNITY_UI_ALPHACLIP



            struct appdata_t
            {
                float4 vertex   : POSITION;
                float4 color    : COLOR;
                float2 texcoord : TEXCOORD0;
                UNITY_VERTEX_INPUT_INSTANCE_ID

            };

            struct v2f
            {
                float4 vertex   : SV_POSITION;
                fixed4 color    : COLOR;
                half2 texcoord  : TEXCOORD0;
                float4 worldPosition : TEXCOORD1;
                UNITY_VERTEX_INPUT_INSTANCE_ID
                UNITY_VERTEX_OUTPUT_STEREO

            };

            uniform fixed4 _Color;
            uniform fixed4 _TextureSampleAdd;
            uniform float4 _ClipRect;
            uniform sampler2D _MainTex;
            uniform float4 _MainTex_ST;
            uniform float4 _FIllColor;
            uniform float _flashAmount;
            uniform float _FillRate;
            uniform float4 _GhostColor;
            uniform float _GhostFillRate;
            uniform float _ghostTextureBlend;
            uniform float4 _BackGroundColor;
            uniform float _backGroundTextureBlend;

            v2f vert( appdata_t IN  )
            {
                v2f OUT;
                UNITY_SETUP_INSTANCE_ID( IN );
                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
                UNITY_TRANSFER_INSTANCE_ID(IN, OUT);
                OUT.worldPosition = IN.vertex;


                OUT.worldPosition.xyz +=  float3( 0, 0, 0 ) ;
                OUT.vertex = UnityObjectToClipPos(OUT.worldPosition);

                OUT.texcoord = IN.texcoord;

                OUT.color = IN.color * _Color;
                return OUT;
            }

            fixed4 frag(v2f IN  ) : SV_Target
            {
                float2 uv0_MainTex = IN.texcoord.xy * _MainTex_ST.xy + _MainTex_ST.zw;
                float4 tex2DNode2 = tex2D( _MainTex, uv0_MainTex );
                float4 color111 = IsGammaSpace() ? float4(1,1,1,1) : float4(1,1,1,1);
                float4 lerpResult110 = lerp( _FIllColor , color111 , _flashAmount);
                float2 uv027 = IN.texcoord.xy * float2( 1,1 ) + float2( 0,0 );
                float clampResult74 = clamp( floor( ( ( _FillRate + 1.0 ) - uv027.x ) ) , 0.0 , 1.0 );
                float fillMask70 = clampResult74;
                float alphaMask89 = tex2DNode2.a;
                float4 appendResult96 = (float4(_GhostColor.r , _GhostColor.g , _GhostColor.b , alphaMask89));
                float clampResult75 = clamp( floor( ( ( _GhostFillRate + 1.0 ) - uv027.x ) ) , 0.0 , 1.0 );
                float ghostMask71 = ( clampResult75 - clampResult74 );
                float4 fillTexture100 = tex2DNode2;
                float4 lerpResult103 = lerp( ( appendResult96 * ghostMask71 ) , ( fillTexture100 * ghostMask71 ) , _ghostTextureBlend);
                float4 appendResult92 = (float4(_BackGroundColor.r , _BackGroundColor.g , _BackGroundColor.b , alphaMask89));
                float backgroundMask79 = ( 1.0 - ( fillMask70 + ghostMask71 ) );
                float4 lerpResult99 = lerp( ( appendResult92 * backgroundMask79 ) , ( backgroundMask79 * fillTexture100 ) , _backGroundTextureBlend);

                half4 color = ( ( tex2DNode2 * lerpResult110 * fillMask70 ) + lerpResult103 + lerpResult99 );

                #ifdef UNITY_UI_CLIP_RECT
                color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);
                #endif

                #ifdef UNITY_UI_ALPHACLIP
                clip (color.a - 0.001);
                #endif

                return color;
            }
        ENDCG
        }
    }

}