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Shader "Unity Shaders Book/Chapter 8/Alpha Blend" { Properties { _Color ("Color Tint", Color) = (1, 1, 1, 1) _MainTex ("Main Tex", 2D) = "white" {} _AlphaScale ("Alpha Scale", Range(0, 1)) = 1 } SubShader { Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"} Pass { Tags { "LightMode"="ForwardBase" }
ZWrite Off Blend SrcAlpha OneMinusSrcAlpha CGPROGRAM #pragma vertex vert #pragma fragment frag #include "Lighting.cginc" fixed4 _Color; sampler2D _MainTex; float4 _MainTex_ST; fixed _AlphaScale; struct a2v { float4 vertex : POSITION; float3 normal : NORMAL; float4 texcoord : TEXCOORD0; }; struct v2f { float4 pos : SV_POSITION; float3 worldNormal : TEXCOORD0; float3 worldPos : TEXCOORD1; float2 uv : TEXCOORD2; }; v2f vert(a2v v) { v2f o; o.pos = UnityObjectToClipPos(v.vertex); o.worldNormal = UnityObjectToWorldNormal(v.normal); o.worldPos = mul(unity_ObjectToWorld, v.vertex).xyz; o.uv = TRANSFORM_TEX(v.texcoord, _MainTex); return o; } fixed4 frag(v2f i) : SV_Target { fixed3 worldNormal = normalize(i.worldNormal); fixed3 worldLightDir = normalize(UnityWorldSpaceLightDir(i.worldPos)); fixed4 texColor = tex2D(_MainTex, i.uv); fixed3 albedo = texColor.rgb * _Color.rgb; fixed3 ambient = UNITY_LIGHTMODEL_AMBIENT.xyz * albedo; fixed3 diffuse = _LightColor0.rgb * albedo * max(0, dot(worldNormal, worldLightDir)); return fixed4(ambient + diffuse, texColor.a * _AlphaScale); } ENDCG } } FallBack "Transparent/VertexLit" }
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