Fragment Lambert Lit AlphaBlend

앞 포스팅에서 (https://illu.tistory.com/1371) Lambert 라이팅을 적용한 이후 이제 라이팅에 영향을 받는 알파블렌드를 구현하는 포스팅이다.

Shader "Test/FragmentLambertAlpha"      {     Properties     {       _TintColor("Color", color) = (1,1,1,1)       _MainTex("Texture", 2D) = "white" {}       _Alpha("Alpha Range", Range(0,1)) = 0.5       [Enum(UnityEngine.Rendering.BlendMode)] _SrcBlend("Src Blend", Float) = 1       [Enum(UnityEngine.Rendering.BlendMode)] _DstBlend("Dst Blend", Float) = 1         [Enum(Off, 0, On, 1)] _ZWrite("ZWrite", Float) = 0       [Enum(UnityEngine.Rendering.CompareFunction)] _ZTest("ZTest", Float) = 0       [Enum(UnityEngine.Rendering.CullMode)] _Cull("Cull Mode", Float) = 1     }     SubShader     {     Tags { "Queue"="Transparent" "RenderType"="Transparent" }              Pass         {                              Tags {"LightMode"="ForwardBase"}                               Blend[_SrcBlend] [_DstBlend]             ZWrite[_ZWrite]             ZTest[_ZTest]             Cull[_Cull]             CGPROGRAM               #pragma vertex vert               #pragma fragment frag               # include "UnityCG.cginc"                # include "UnityLightingCommon.cginc"                struct v2f          {                 float2 uv : TEXCOORD0;                 fixed4 diff : COLOR0;                 float4 vertex : SV_POSITION;                 };          v2f vert(appdata_base v)          {                 v2f o;                 o.vertex = UnityObjectToClipPos(v.vertex);                 o.uv = v.texcoord;                half3 worldNormal = UnityObjectToWorldNormal(v.normal);                half nl = max(0, dot(worldNormal, _WorldSpaceLightPos0.xyz));                o.diff = nl * _LightColor0;                o.diff.rgb += ShadeSH9(half4(worldNormal, 1));                  return o;     }                sampler2D _MainTex;                half _Alpha;                fixed4 _TintColor;                fixed4 frag(v2f i) : SV_Target                 {                                fixed4 col = tex2D(_MainTex, i.uv) * _TintColor;                            col *= i.diff;                               return fixed4(col.rgb, col.a * _Alpha);                  }             ENDCG         }        } }