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Assets/Trails FX/Resources/TrailsFX/TrailEffectDistort.shader

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+Shader "TrailsFX/Effect/Distort" {
+Properties {
+    _MainTex ("Texture", 2D) = "white" {}
+    _Color ("Color", Color) = (1,1,1,1)
+    _Cull ("Cull", Int) = 2
+    _AdditiveTint ("Additive Tint", Color) = (0,0,0.1)
+}
+
+        SubShader
+    {
+        Tags { "Queue"="Transparent+101" "RenderType"="Transparent" "RenderPipeline" = "LightweightPipeline" }
+
+        Pass
+        {
+            Stencil {
+                Ref 2
+                ReadMask 2
+                Comp NotEqual
+                Pass replace
+            }
+            Blend SrcAlpha OneMinusSrcAlpha
+            ZWrite Off
+
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma multi_compile_instancing assumeuniformscaling nolightprobe nolodfade nolightmap
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            struct v2f
+            {
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+                float4 pos     : SV_POSITION;
+                float4 grabPos : TEXCOORD1;
+                fixed4 color   : COLOR;
+                UNITY_VERTEX_OUTPUT_STEREO
+            };
+
+UNITY_INSTANCING_BUFFER_START(Props)
+    UNITY_DEFINE_INSTANCED_PROP(fixed4, _Colors)
+#define _Colors_arr Props
+UNITY_INSTANCING_BUFFER_END(Props)
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_INITIALIZE_OUTPUT(v2f, o);
+                UNITY_TRANSFER_INSTANCE_ID(v, o);
+                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+                o.pos = UnityObjectToClipPos(v.vertex);
+                o.grabPos = ComputeGrabScreenPos(o.pos);
+                o.color = UNITY_ACCESS_INSTANCED_PROP(_Colors_arr, _Colors);
+                o.grabPos.xy += (0.5.xx - o.color.rg) * o.color.a / o.grabPos.w;
+                return o;
+            }
+
+            sampler2D _CameraOpaqueTexture;
+            fixed4 _AdditiveTint;
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+                UNITY_SETUP_INSTANCE_ID(i);
+                fixed4 col = tex2Dproj(_CameraOpaqueTexture, i.grabPos);
+                col.rgb += _AdditiveTint;
+                col.a *= i.color.a;
+                return col;
+            }
+            ENDCG
+        }
+
+    }
+
+    SubShader
+    {
+        Tags { "Queue"="Transparent+101" "RenderType"="Transparent" }
+
+        GrabPass {
+        "_BackgroundTexture"
+        }
+
+        Pass
+        {
+			Stencil {
+                Ref 2
+                ReadMask 2
+                Comp NotEqual
+                Pass replace
+            }
+            Blend SrcAlpha OneMinusSrcAlpha
+            ZWrite Off
+            Cull [_Cull]
+
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma multi_compile_instancing assumeuniformscaling nolightprobe nolodfade nolightmap
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+				UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            struct v2f
+            {
+            	UNITY_VERTEX_INPUT_INSTANCE_ID
+                float4 pos     : SV_POSITION;
+                float4 grabPos : TEXCOORD1;
+                fixed4 color   : COLOR;
+				UNITY_VERTEX_OUTPUT_STEREO
+            };
+
+UNITY_INSTANCING_BUFFER_START(Props)
+	UNITY_DEFINE_INSTANCED_PROP(fixed4, _Colors)
+#define _Colors_arr Props
+UNITY_INSTANCING_BUFFER_END(Props)
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+				UNITY_SETUP_INSTANCE_ID(v);
+				UNITY_INITIALIZE_OUTPUT(v2f, o);
+				UNITY_TRANSFER_INSTANCE_ID(v, o);
+				UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+                o.pos = UnityObjectToClipPos(v.vertex);
+                o.grabPos = ComputeGrabScreenPos(o.pos);
+                o.color = UNITY_ACCESS_INSTANCED_PROP(_Colors_arr, _Colors);
+                o.grabPos.xy += (0.5.xx - o.color.rg) * o.color.a / o.grabPos.w;
+                return o;
+            }
+
+            sampler2D _BackgroundTexture;
+            fixed4 _AdditiveTint;
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+            	UNITY_SETUP_INSTANCE_ID(i);
+            	fixed4 col = tex2Dproj(_BackgroundTexture, i.grabPos);
+                col.rgb += _AdditiveTint;
+            	col.a *= i.color.a;
+				return col;
+            }
+            ENDCG
+        }
+
+    }
+
+
+}