• 联系我们   Contact
    您的位置:首页 > 新闻动态 > Unity3D

    UNITY3D使用SHADER给顶点设置颜色

    2019/6/12      点击:

    直接上代码!!

    Shader "Custom/TeamMaskFinal" {
           Properties {
                  _MainTex ("Base (RGB)", 2D) = "white" {}
                  _From("From Color",Color) = (1,1,1,1)
                  _To("To Color",Color) = (1,1,1,1)
                  _HError("Hue Error",range(0,1)) = 0 // 允许的色相误差
                  _SError("Saturation Error",range(0,1)) = 0 // 允许的饱和度误差
                  _VError("Brightness Error",range(0,1)) = 0 // 允许的亮度误差
           }
           SubShader {
                  Tags { "RenderType"="Opaque" }
                  LOD 150
     
                  CGPROGRAM
                  #pragma surface surf Lambert noforwardadd
     
                  sampler2D _MainTex;
                  fixed4 _From;
                  fixed4 _To;
                  fixed _HError;
                  fixed _SError;
                  fixed _VError;
     
                  struct Input {
                         float2 uv_MainTex;
                  } ;
     
                  fixed3 RGBtoHSV(fixed3 c)
                  {
                      fixed4 K = fixed4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
                      fixed4 p = lerp(fixed4(c.bg, K.wz), fixed4(c.gb, K.xy), step(c.b, c.g));
                      fixed4 q = lerp(fixed4(p.xyw, c.r), fixed4(c.r, p.yzx), step(p.x, c.r));
     
                      float d = q.x - min(q.w, q.y);
                      float e = 1.0e-10;
                      return fixed3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
                  }
     
                  fixed3 HSVtoRGB(fixed3 c)
                  {
                      fixed4 K = fixed4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
                      fixed3 p = abs(frac(c.xxx + K.xyz) * 6.0 - K.www);
                      return c.z * lerp(K.xxx, saturate(p - K.xxx), c.y);
                  }
     
                  void surf (Input IN, inout SurfaceOutput o) {
                         fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
                         fixed3 cHSV = RGBtoHSV(c);
                         fixed3 FromHSV= RGBtoHSV(_From);
                         fixed3 ToHSV= RGBtoHSV(_To);
     
                         fixed diffHue = abs(cHSV.x-FromHSV.x);
                         diffHue = lerp(diffHue,abs(diffHue-1),step(0.5,diffHue));
     
                         fixed con = step(diffHue,_HError);
                         con = con + step(abs(cHSV.y-FromHSV.y),_SError);
                         con = con + step(abs(cHSV.z-FromHSV.z),_VError);
                         con = step(2.5,con);
                         fixed3 ret = cHSV + ToHSV - FromHSV;
    //                   ret.x = lerp(ret.x,ret.x-1,step(1,ret.x));
    //                   ret.x = lerp(ret.x,ret.x+1,step(ret.x,0));
     
                         o.Albedo = lerp(c.rgb,HSVtoRGB(ret),fixed3(con,con,con));
     
                         o.Alpha = c.a;
                  }
                  ENDCG
           }
     
           Fallback "Mobile/VertexLit"
    }