Shader "UsayaLib/3D/Unlit/UVScrollAdditiveRimAdditive" {
    Properties {
        _TintColor ("Tint Color", Color) = (0.5, 0.5, 0.5, 0.5)
        _MainTex ("Base (RGB)", 2D) = "white" { }
        _ScrollX ("Scroll X", float) = 0
        _ScrollY ("Scroll Y", float) = 0
        _RimColor ("Rim color", Color) = (1, 1, 1, 1)
        _RimEffect ("Rim effect", Range(0, 1)) = 0
    }

    SubShader {
        Tags {
            "Queue" = "Transparent"
            "IgnoreProjector" = "True"
            "RenderType" = "Transparent"
        }

        Blend SrcAlpha One
        Cull Off
        ZWrite Off
        Fog {
            Mode Off
        }

        Pass {
            CGPROGRAM

            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_particles
            #pragma multi_compile_fog

            #include "UnityCG.cginc"

            fixed4 _TintColor;
            sampler2D _MainTex;
            float4 _MainTex_ST;
            float _ScrollX;
            float _ScrollY;
            fixed4 _RimColor;
            fixed _RimEffect;

            struct appdata_t {
                float4 vertex: POSITION;
                float4 texcoord: TEXCOORD0;
                fixed4 color: COLOR;
                float3 normal : NORMAL;
            };

            struct v2f {
                float4 vertex: SV_POSITION;
                float2 texcoord: TEXCOORD0;
                float3 viewDir : TEXCOORD1;
                fixed4 color: COLOR;
                float3 normal : NORMAL;
                UNITY_FOG_COORDS(1)
            };

            v2f vert(appdata_t v){
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
                o.texcoord.x = o.texcoord.x + _ScrollX * _Time.y;
                o.texcoord.y = o.texcoord.y + _ScrollY * _Time.y;
                o.viewDir = normalize(ObjSpaceViewDir(v.vertex));
                o.color = 2.0 * v.color * _TintColor;
                o.normal = UnityObjectToWorldNormal(v.normal);
                UNITY_TRANSFER_FOG(o, o.vertex);
                return o;
            }
            fixed4 frag(v2f i): SV_Target {
                fixed4 col = i.color * tex2D(_MainTex, i.texcoord);

                float val = 1 - abs(dot(i.viewDir, i.normal)) * _RimEffect;
                fixed4 rim = _RimColor * _RimColor.a * val * val;
                col += rim;


                UNITY_APPLY_FOG_COLOR(i.fogCoord, col, (fixed4)0);
                return col;
            }
            ENDCG
        }
    }

    Fallback off
}