Make work with astra

UnityProject/Assets/ThirdParty/PostProcessing/Utilities/CustomMotionTexture/Shaders/CustomMotionVectorTexture.shader

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+Shader "Post Processing/Custom Motion Vector Texture"
+{
+    Properties
+    {
+        _MotionTex ("Motion Vector Texture", 2D) = "black" {}
+        _MotionAmount ("Motion Vector Multiplier", range (-0.25, 0.25)) = 0
+    }
+    SubShader
+    {
+        Pass
+        {
+            Name "Motion Vectors"
+            Tags { "LightMode" = "MotionVectors" }
+ 
+            ZTest LEqual Cull Back ZWrite On
+ 
+            CGPROGRAM
+
+                #pragma vertex vert
+                #pragma fragment FragMotionVectors
+                #include "UnityCG.cginc"
+
+                float4 _MotionValue;
+                sampler2D _MotionTex;
+                float4 _MotionTex_ST;
+                float _MotionAmount;
+
+                struct appdata
+                {
+                    float4 vertex : POSITION;
+                    float2 uv : TEXCOORD0;
+                    float3 normal : NORMAL;
+                    float4 tangent : TANGENT;
+                };
+
+                struct v2f
+                {
+                    float2 uv : TEXCOORD0;
+                    float4 vertex : SV_POSITION;
+                    float3 normal : NORMAL;
+                    float4 tangent : TANGENT;
+                    float4 transposedTangent : TEXCOORD1;
+                };
+
+                v2f vert (appdata v)
+                {
+                    v2f o;
+                    o.vertex = UnityObjectToClipPos(v.vertex);
+                    o.uv = TRANSFORM_TEX(v.uv, _MotionTex);
+                    o.normal = UnityObjectToClipPos(v.normal);
+                    o.normal = o.normal * 0.5 + 0.5;
+                    o.tangent = mul(UNITY_MATRIX_MV, v.tangent);
+                    o.transposedTangent = (mul(UNITY_MATRIX_IT_MV, v.tangent)) * 0.5 + 0.5;
+                    return o;
+                }
+ 
+                float4 FragMotionVectors(v2f i) : SV_Target
+                {
+                    half4 c = tex2D(_MotionTex, i.uv);
+                    c.rg = (c.rg * 2.0 - 1.0) * _MotionAmount; // Using color texture so need to make 0.5 neutral
+                    half4 t1 = i.tangent * 0.005; // Sides of tire
+                    half4 t2 = c * float4(i.transposedTangent.r * 2.0, i.transposedTangent.g * 2.0, 0.0, 1.0); // Front of tire
+                    half4 t3 = lerp(t2, t1, c.b); // Lerp between front and side of tire
+                    return t3 * _MotionAmount;
+                }
+                
+            ENDCG
+        }
+    }
+}

UnityProject/Assets/ThirdParty/PostProcessing/Utilities/CustomMotionTexture/Shaders/CustomMotionVectorTexture.shader.meta

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+fileFormatVersion: 2
+guid: 9189229324e2342b8b69f7c1904dceba
+timeCreated: 1479826273
+licenseType: Store
+ShaderImporter:
+  defaultTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: