Shader练习:卡通渲染

小凡凡凡凡

已于 2024-12-21 09:14:56 修改

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文章标签： unity 游戏引擎

于 2023-06-14 07:21:00 首次发布

本文链接：https://blog.youkuaiyun.com/Miracle_JJW/article/details/131199738

版权

Shader "Custom/ToonShading"
{
    Properties
    {
        _MainTex ("Albedo (RGB)", 2D) = "white" {}
        _RampTex("Ramp", 2D) = "white"{}
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 200

        CGPROGRAM
        
        #pragma surface surf Toon

        struct Input
        {
            float2 uv_MainTex;
        };
        sampler2D _MainTex;
        sampler2D _RampTex;

        void surf(Input IN, inout SurfaceOutput o)
        {
            o.Albedo = tex2D(_MainTex, IN.uv_MainTex);
        }

        half4 LightingToon(SurfaceOutput s, half3 lightDir, half atten)
        {
            half f = max(dot(s.Normal, lightDir), 0); //平滑过渡的光照强度值
            f = tex2D(_RampTex, fixed2(f, 0.5)).r; //斜坡光照强度值(不平滑的过渡)
            half4 c;
            //_LightColor0是unity预定义的，表示第0盏灯光的颜色值
            c.rgb = s.Albedo * _LightColor0.rgb * f * atten;
            c.a = s.Alpha;
            return c;
        }
        ENDCG
    }
    FallBack "Diffuse"
}