庄懂着色器_L04_半兰伯特/SSSLut

庄懂-BoyanTata的个人空间_哔哩哔哩_Bilibili

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作业点评

HalfLambert代码

float halfLambert = nDotl * 0.5 + 0.5;

Shader "AP01/L04/HalfLambert"
{
    Properties
    {


    }

    SubShader
    {
        Tags {"RenderType"="Opaque" }

        Pass
        {
            Name "FORWARD"

            Tags {"LightMode"="ForwardBase"}

            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"
            #pragma multi_compile_fwdbase_fullshadows
            #pragma target 3.0

            // 输入结构
            struct VertexInput
            {
                float4 vertex : POSITION;   // 将模型顶点信息输入进来
                float4 normal : NORMAL;     // 将模型法线信息输入进来
            };

            // 输出结构
            struct VertexOutput
            {
                float4 pos : SV_POSITION;   // 由模型顶点信息换算而来的顶点屏幕位置
                float3 nDirWS : TEXCOORD0;  // 由模型法线信息换算来的世界空间法线信息
            };

            // 输入结构>>>顶点Shader>>>输出结构
            VertexOutput vert (VertexInput v)
            {
                VertexOutput o = (VertexOutput)0;               // 新建一个输出结构
                o.pos = UnityObjectToClipPos( v.vertex );       // 变换顶点信息 并将其塞给输出结构
                o.nDirWS = UnityObjectToWorldNormal(v.normal);  // 变换法线信息 并将其塞给输出结构
                return o;                                       // 将输出结构 输出
            }

            // 输出结构>>>像素
            float4 frag(VertexOutput i) : COLOR
            {
                float3 nDir = i.nDirWS;                         // 获取nDir
                float3 lDir = _WorldSpaceLightPos0.xyz;         // 获取lDir
                float nDotl = dot(i.nDirWS, lDir);              // nDir点积lDir
                float halfLambert = nDotl * 0.5 + 0.5;          // 映射至0~1
                return float4(halfLambert, halfLambert, halfLambert, 1.0);  // 输出最终颜色
            }
            ENDCG
        }
    }
    FallBack "Diffuse"
}

SSSlut连连看

思路:

看起来是SSS效果

它应该是个RampTex

RampTex的内容似乎在变

RampTex上下没有变化

所以:

让RampTex上下有变化

开放采样RampTex的V坐标值

预积分 Pre-Intregrated Skin Shading

练习

ASE_SSSLut