外发光材质Shader

001Shader"Faye/OutLightting"002
{
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Properties
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{
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_MainTex("Texture(RGB)",2D)="black"{}
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_Color("Color",Color)=(0,0,0,1)
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_AtmoColor("AtmosphereColor",Color)=(0.5,0.5,1.0,1)
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_Size("Size",Float)=0.1
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_Falloff("Falloff",Float)=5
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_FalloffPlanet("FalloffPlanet",Float)=5
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_Transparency("Transparency",Float)=15
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_TransparencyPlanet("TransparencyPlanet",Float)=1
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}
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SubShader
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{
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Pass
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{
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Name"PlanetBase"
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Tags{"LightMode"="Always"}
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CullBack
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CGPROGRAM
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#pragmavertexvert
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#pragmafragmentfrag
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#pragmafragmentoptionARB_fog_exp2
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#pragmafragmentoptionARB_precision_hint_fastest
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#include"UnityCG.cginc"
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uniformsampler2D_MainTex;
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uniformfloat4_MainTex_ST;
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uniformfloat4_Color;
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uniformfloat4_AtmoColor;
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uniformfloat_FalloffPlanet;
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uniformfloat_TransparencyPlanet;
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structv2f
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{
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float4pos:SV_POSITION;
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float3normal:TEXCOORD0;
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float3worldvertpos:TEXCOORD1;
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float2texcoord:TEXCOORD2;
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};
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v2fvert(appdata_basev)
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{
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v2fo;
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o.pos=mul(UNITY_MATRIX_MVP,v.vertex);
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o.normal=v.normal;
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o.worldvertpos=mul(_Object2World,v.vertex).xyz;
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o.texcoord=TRANSFORM_TEX(v.texcoord,_MainTex);
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returno;
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}
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float4frag(v2fi):COLOR
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{
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i.normal=normalize(i.normal);
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float3viewdir=normalize(_WorldSpaceCameraPos-i.worldvertpos);
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float4atmo=_AtmoColor;
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atmo.a=pow(1.0-saturate(dot(viewdir,i.normal)),_FalloffPlanet);
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atmo.a*=_TransparencyPlanet*_Color;
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//Unity3D教程手册：http://www.unitymanual.com
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float4color=tex2D(_MainTex,i.texcoord)*_Color;
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color.rgb=lerp(color.rgb,atmo.rgb,atmo.a);
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returncolor*dot(normalize(i.worldvertpos-_WorldSpaceLightPos0),i.normal);
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}
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ENDCG
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}
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Pass
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{
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Name"AtmosphereBase"
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Tags{"LightMode"="Always"}
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CullFront
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BlendSrcAlphaOne
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CGPROGRAM
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#pragmavertexvert
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#pragmafragmentfrag
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#pragmafragmentoptionARB_fog_exp2
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#pragmafragmentoptionARB_precision_hint_fastest
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#include"UnityCG.cginc"
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uniformfloat4_Color;
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uniformfloat4_AtmoColor;
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uniformfloat_Size;
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uniformfloat_Falloff;
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uniformfloat_Transparency;
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structv2f
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{
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float4pos:SV_POSITION;
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float3normal:TEXCOORD0;
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float3worldvertpos:TEXCOORD1;
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};
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//Unity3D教程手册：http://www.unitymanual.com
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v2fvert(appdata_basev)
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{
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v2fo;
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v.vertex.xyz+=v.normal*_Size;
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o.pos=mul(UNITY_MATRIX_MVP,v.vertex);
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o.normal=v.normal;
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o.worldvertpos=mul(_Object2World,v.vertex);
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returno;
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}
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float4frag(v2fi):COLOR
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{
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i.normal=normalize(i.normal);
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float3viewdir=normalize(i.worldvertpos-_WorldSpaceCameraPos);
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float4color=_AtmoColor;
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color.a=pow(saturate(dot(viewdir,i.normal)),_Falloff);
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color.a*=_Transparency*_Color*dot(normalize(i.worldvertpos-_WorldSpaceLightPos0),i.normal);
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returncolor;
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}
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ENDCG
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}
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}
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FallBack"Diffuse"
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}