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Assets/Samples/Cinemachine/2.10.5/Cinemachine Example Scenes/Scenes/FadeOutNearbyObjects/CinemachineFadeOutNearbyObjects.cs

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+using System;
+using UnityEngine;
+
+namespace Cinemachine.Examples
+{
+    /// <summary>
+    /// An example add-on module for Cinemachine Virtual Camera for controlling
+    /// the FadeOut shader included in our example package.
+    /// </summary>
+    [AddComponentMenu("")] // Hide in menu
+    [ExecuteAlways]
+    public class CinemachineFadeOutNearbyObjects : CinemachineExtension
+    {
+        /// <summary>
+        /// Radius of the look at target.
+        /// </summary>
+        [Tooltip("Radius of the look at target.")]
+        public float m_LookAtTargetRadius = 1;
+    
+        /// <summary>
+        /// Minimum distance to have fading out effect in front of the camera.
+        /// </summary>
+        [Tooltip("Minimum distance to have fading out effect in front of the camera.")]
+        public float m_MinDistance = 0;
+
+        /// <summary>
+        /// Maximum distance to have fading out effect in front of the camera.
+        /// </summary>
+        [Tooltip("Maximum distance to have fading out effect in front of the camera.")]
+        public float m_MaxDistance = 8;
+
+        /// <summary>
+        /// If true, m_MaxDistance will be set to
+        /// distance between this virtual camera and LookAt target minus m_LookAtTargetRadius.
+        /// </summary>
+        [Tooltip("If true, MaxDistance will be set to " +
+            "distance between this virtual camera and LookAt target minus LookAtTargetRadius.")]
+        public bool m_SetToCameraToLookAtDistance = false;
+    
+        /// <summary>
+        /// Material using the FadeOut shader.
+        /// </summary>
+        [Tooltip("Material using the FadeOut shader.")]
+        public Material m_FadeOutMaterial;
+
+        static readonly int k_MaxDistanceID = Shader.PropertyToID("_MaxDistance");
+        static readonly int k_MinDistanceID = Shader.PropertyToID("_MinDistance");
+
+        /// <summary>
+        /// Updates FadeOut shader on the specified FadeOutMaterial.
+        /// </summary>
+        /// <param name="vcam">The virtual camera being processed</param>
+        /// <param name="stage">The current pipeline stage</param>
+        /// <param name="state">The current virtual camera state</param>
+        /// <param name="deltaTime">The current applicable deltaTime</param>
+        protected override void PostPipelineStageCallback(
+            CinemachineVirtualCameraBase vcam,
+            CinemachineCore.Stage stage, ref CameraState state, float deltaTime)
+        {
+            if (stage == CinemachineCore.Stage.Finalize)
+            {
+                if (m_FadeOutMaterial == null || !m_FadeOutMaterial.HasProperty(k_MaxDistanceID) || 
+                    !m_FadeOutMaterial.HasProperty(k_MinDistanceID)) return;
+            
+                if (m_SetToCameraToLookAtDistance && vcam.LookAt != null)
+                {
+                    m_MaxDistance = Vector3.Distance(vcam.transform.position, vcam.LookAt.position) - m_LookAtTargetRadius;
+                }
+
+                m_FadeOutMaterial.SetFloat(k_MaxDistanceID, m_MaxDistance);
+                m_FadeOutMaterial.SetFloat(k_MinDistanceID, m_MinDistance);
+            }
+        }
+        
+        void OnValidate()
+        {
+            m_LookAtTargetRadius = Math.Max(0, m_LookAtTargetRadius);
+            m_MinDistance = Math.Max(0, m_MinDistance);
+            m_MaxDistance = Math.Max(0, m_MaxDistance);
+        }
+    }
+}

Assets/Samples/Cinemachine/2.10.5/Cinemachine Example Scenes/Scenes/FadeOutNearbyObjects/CinemachineFadeOutNearbyObjects.cs.meta

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Assets/Samples/Cinemachine/2.10.5/Cinemachine Example Scenes/Scenes/FadeOutNearbyObjects/FadeOut.shader

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+Shader "Custom/FadeOut" {
+    Properties {
+        _Color ("Color", Color) = (1,1,1,1)
+        _MainTex ("Albedo (RGB)", 2D) = "white" {}
+        _MinDistance ("Minimum Distance", float) = 2
+        _MaxDistance ("Maximum Distance", float) = 3
+    }
+    SubShader {
+        Tags { "Queue"="Transparent" "RenderType"="Transparent" }
+ 
+    Pass {
+        ZWrite Off
+        ColorMask 0
+    }
+   
+        CGPROGRAM
+        #pragma surface surf Lambert alpha:fade
+        #pragma target 3.0
+        sampler2D _MainTex;
+        struct Input {
+            float2 uv_MainTex;
+            float3 worldPos;
+        };
+        float _MinDistance;
+        float _MaxDistance;
+        fixed4 _Color;
+        void surf (Input IN, inout SurfaceOutput o) {
+            fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
+            o.Albedo = c.rgb;
+            
+            // help: https://developer.download.nvidia.com/cg/index_stdlib.html
+            float distanceFromCamera = distance(IN.worldPos, _WorldSpaceCameraPos);
+            float fade = saturate((distanceFromCamera - _MinDistance) / _MaxDistance);
+            
+            o.Alpha = c.a * fade;
+        }
+        ENDCG
+    }
+    FallBack "Diffuse"
+}

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