让Surface Shader不受光照的明暗影响

直接上码

Shader "Custom/3DVideo" {
    Properties {
        _Color ("Color", Color) = (1,1,1,1)
        _MainTex ("Albedo (RGB)", 2D) = "white" {}
        _Glossiness ("Smoothness", Range(0,1)) = 0.5
        _Metallic ("Metallic", Range(0,1)) = 0.0
        _x("x", Range(0.1, 1)) = 1
        _y("y", Range(0.1, 1)) = 1
    }
    SubShader {
        Tags { "RenderType"="Opaque" }
        LOD 200
        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"
}