Unityd外发光Shader Lab

 Shader "Faye/OutLightting"
 {
 Properties
 {
 _MainTex("Texture (RGB)", 2D) = "black" {}
 _Color("Color", Color) = (, , , )
 _AtmoColor("Atmosphere Color", Color) = (0.5, 0.5, 1.0, )
 _Size("Size", Float) = 0.1
 _Falloff("Falloff", Float) =
 _FalloffPlanet("Falloff Planet", Float) =
 _Transparency("Transparency", Float) =
 _TransparencyPlanet("Transparency Planet", Float) =
 }
 SubShader
 {
 Pass
 {
 Name "PlanetBase"
 Tags {"LightMode" = "Always"}
 Cull Back
 CGPROGRAM
 #pragma vertex vert
 #pragma fragment frag
 #pragma fragmentoption ARB_fog_exp2
 #pragma fragmentoption ARB_precision_hint_fastest
 #include "UnityCG.cginc"
 uniform sampler2D _MainTex;
 uniform float4 _MainTex_ST;
 uniform float4 _Color;
 uniform float4 _AtmoColor;
 uniform float _FalloffPlanet;
 uniform float _TransparencyPlanet;
 struct v2f
 {
 float4 pos : SV_POSITION;
 float3 normal : TEXCOORD0;
 float3 worldvertpos : TEXCOORD1;
 float2 texcoord : TEXCOORD2;
 };
 v2f vert(appdata_base v)
 {
 v2f o;
 o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
 o.normal = v.normal;
 o.worldvertpos = mul(_Object2World, v.vertex).xyz;
 o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
 return o;
 }
 float4 frag(v2f i) : COLOR
 {
 i.normal = normalize(i.normal);
 float3 viewdir = normalize(_WorldSpaceCameraPos-i.worldvertpos);
 float4 atmo = _AtmoColor;
 atmo.a = pow(1.0-saturate(dot(viewdir, i.normal)), _FalloffPlanet);
 atmo.a *= _TransparencyPlanet*_Color;
 float4 color = tex2D(_MainTex, i.texcoord)*_Color;
 color.rgb = lerp(color.rgb, atmo.rgb, atmo.a);
 return color*dot(normalize(i.worldvertpos-_WorldSpaceLightPos0), i.normal);
 }
 ENDCG
 }
 Pass
 {
 Name "AtmosphereBase"
 Tags {"LightMode" = "Always"}
 Cull Front
 Blend SrcAlpha One
 CGPROGRAM
 #pragma vertex vert
 #pragma fragment frag
 #pragma fragmentoption ARB_fog_exp2
 #pragma fragmentoption ARB_precision_hint_fastest
 #include "UnityCG.cginc"
 uniform float4 _Color;
 uniform float4 _AtmoColor;
 uniform float _Size;
 uniform float _Falloff;
 uniform float _Transparency;
 struct v2f
 {
 float4 pos : SV_POSITION;
 float3 normal : TEXCOORD0;
 float3 worldvertpos : TEXCOORD1;
 };
 v2f vert(appdata_base v)
 {
 v2f o;
 v.vertex.xyz += v.normal*_Size;
 o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
 o.normal = v.normal;
 o.worldvertpos = mul(_Object2World, v.vertex);
 return o;
 }
 float4 frag(v2f i) : COLOR
 {
 i.normal = normalize(i.normal);
 float3 viewdir = normalize(i.worldvertpos-_WorldSpaceCameraPos);
 float4 color = _AtmoColor;
 color.a = pow(saturate(dot(viewdir, i.normal)), _Falloff);
 color.a *= _Transparency*_Color*dot(normalize(i.worldvertpos-_WorldSpaceLightPos0), i.normal);
 return color;
 }
 ENDCG
 }
 }
 FallBack "Diffuse"
 }