让Surface Shader不受光照的明暗影响

直接上码

 Shader "Custom/3DVideo" {
     Properties {
         _Color ("Color", Color) = (,,,)
         _MainTex ("Albedo (RGB)", 2D) = "white" {}
         _Glossiness ("Smoothness", Range(,)) = 0.5
         _Metallic ("Metallic", Range(,)) = 0.0
         _x("x", Range(0.1, )) =
         _y("y", Range(0.1, )) =
     }
     SubShader {
         Tags { "RenderType"="Opaque" }
         LOD
         Cull Front
         Lighting Off
 
         CGPROGRAM
         // Physically based Standard lighting model, and enable shadows on all light types
         // #pragma surface surf Standard fullforwardshadows
         #pragma surface surf Unlit noambient
 
         // Use shader model 3.0 target, to get nicer looking lighting
         #pragma target 3.0
 
         half4 LightingUnlit (SurfaceOutput s, half3 lightDir, half atten) {
            return fixed4(s.Albedo, s.Alpha);
         }
 
         sampler2D _MainTex;
         float _x;
         float _y;
 
         struct Input {
             float2 uv_MainTex;
         };
 
         half _Glossiness;
         half _Metallic;
         fixed4 _Color;
 
         // Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
         // See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
         // #pragma instancing_options assumeuniformscaling
         UNITY_INSTANCING_BUFFER_START(Props)
             // put more per-instance properties here
         UNITY_INSTANCING_BUFFER_END(Props)
 
         // void surf (Input IN, inout SurfaceOutputStandard o) {
         void surf (Input IN, inout SurfaceOutput o) {
             float2 uv_XY = IN.uv_MainTex;
             float2 uv_MainTex2 = float2(uv_XY.x * _x, uv_XY.y * _y);
             // Albedo comes from a texture tinted by color
             fixed4 c = tex2D (_MainTex, uv_MainTex2) * _Color;
             o.Albedo = c.rgb;
             // Metallic and smoothness come from slider variables
             // o.Metallic = _Metallic;
             // o.Smoothness = _Glossiness;
             o.Alpha = c.a;
         }
         ENDCG
     }
     FallBack "Diffuse"
 }