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240 lines
10 KiB
240 lines
10 KiB
// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'
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// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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Shader "Custom/Planet_Clouds_Atmosphere"
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{
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Properties{
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_MainTex("Clouds Base (RGB)", 2D) = "white" {}
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_AlphaScale("Clouds alpha Scale", Range(0.0, 2.0)) = 1.0
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[NoScaleOffset]_BumpMap("Clouds normal Map", 2D) = "bump" {}
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_BumpScale("Clouds bump Scale", Range(0.0, 1.0)) = 1.0
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_DisplacementClouds ("Clouds displacement", Range(0, .05)) = 0.005
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_Highatmospherecolor ("High atmosphere color", Color) = (0.5,0.5,0.5,0)
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_Lowatmospherecolor ("Low atmosphere color", Color) = (0.5,0.5,0.5,1)
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_Inneratmosphere ("Inner atmosphere", Color) = (0.5,0.5,0.5,1)
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_Outeratmospherelimit ("Outer atmosphere limit", Range(0, 1)) = 0.548887
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_Outeratmopsheredensity ("Outer atmopshere density", Range(0, 1)) = 1
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_Inneratmopsheredensity ("Inner atmopshere density", Range(0, 1)) = 0.08092485
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_Innerouterlimit ("Inner outer limit", Range(0, 1)) = 0.6647399
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_Inneroutersmoothness ("Inner outer smoothness", Range(0, 1)) = 0.2572428
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_DisplacementAtmosphere ("Displacement atmosphere", Range(0, .1)) = 0.1
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}
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CGINCLUDE
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#define _GLOSSYENV 1
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#define UNITY_SETUP_BRDF_INPUT SpecularSetup
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ENDCG
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SubShader
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{
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Tags
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{
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"RenderType" = "Transparent"
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"Queue" = "Transparent"
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}
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LOD 300
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Blend SrcAlpha OneMinusSrcAlpha
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ZWrite Off
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CGPROGRAM
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#pragma target 3.0
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#include "UnityPBSLighting.cginc"
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//#pragma surface surf Standard
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#pragma surface surf Standard fullforwardshadows alpha vertex:vert
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//#pragma surface surf Lambert
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//#define UNITY_PASS_FORWARDBASE
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sampler2D _MainTex;
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sampler2D _BumpMap;
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uniform float _BumpScale;
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uniform float _AlphaScale;
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uniform float _DisplacementClouds;
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struct Input
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{
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float2 uv_MainTex;
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};
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void vert (inout appdata_full v)
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{
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v.vertex.xyz += v.normal * _DisplacementClouds;
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}
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void surf(Input IN, inout SurfaceOutputStandard o)
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{
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float4 albedotex = tex2D(_MainTex, IN.uv_MainTex);
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float4 normaltex = tex2D(_BumpMap, IN.uv_MainTex);
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o.Albedo = albedotex.rgb;
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o.Alpha = saturate(albedotex.a * _AlphaScale);
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o.Normal = normalize(UnpackScaleNormal(normaltex, _BumpScale));
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o.Metallic = 0.0f;
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o.Smoothness = 0.0f;
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}
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ENDCG
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Pass {
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Name "FORWARD"
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Tags {
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"LightMode"="ForwardBase"
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}
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Blend SrcAlpha OneMinusSrcAlpha
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ZWrite Off
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//Offset 10, -1
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#define UNITY_PASS_FORWARDBASE
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#include "UnityCG.cginc"
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#pragma multi_compile_fwdbase
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//#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
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#pragma target 3.0
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uniform float4 _LightColor0;
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uniform float4 _Highatmospherecolor;
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uniform float4 _Lowatmospherecolor;
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uniform float _Outeratmopsheredensity;
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uniform float _Inneratmopsheredensity;
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uniform float _Innerouterlimit;
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uniform float _Inneroutersmoothness;
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uniform float _Outeratmospherelimit;
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uniform float4 _Inneratmosphere;
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uniform float _DisplacementAtmosphere;
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struct VertexInput {
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float4 vertex : POSITION;
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float3 normal : NORMAL;
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};
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struct VertexOutput {
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float4 pos : SV_POSITION;
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float4 posWorld : TEXCOORD0;
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float3 normalDir : TEXCOORD1;
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};
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VertexOutput vert (VertexInput v)
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{
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float4 vpos = v.vertex + float4(normalize(v.normal)*_DisplacementAtmosphere, 0.0f);
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VertexOutput o = (VertexOutput)0;
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o.normalDir = UnityObjectToWorldNormal(v.normal);
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o.posWorld = mul(unity_ObjectToWorld, vpos);
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float3 lightColor = _LightColor0.rgb;
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o.pos = UnityObjectToClipPos(vpos);
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return o;
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}
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float4 frag(VertexOutput i) : COLOR
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{
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i.normalDir = normalize(i.normalDir);
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float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
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float3 normalDirection = i.normalDir;
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float3 lightDirection = normalize(_WorldSpaceLightPos0.xyz);
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float3 lightColor = _LightColor0.rgb;
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float3 halfDirection = normalize(viewDirection+lightDirection);
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float attenuation = 1;
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float3 attenColor = _LightColor0.xyz;
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float NdotL = max(0, dot( normalDirection, lightDirection ));
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/////// Diffuse:
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NdotL = dot( normalDirection, lightDirection );
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float3 w = float3(.25f,.25f,.25f)*0.5; // Light wrapping
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float3 NdotLWrap = NdotL * ( 1.0 - w );
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float3 forwardLight = max(float3(0.0,0.0,0.0), NdotLWrap + w );
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NdotL = max(0.0,dot( normalDirection, lightDirection ));
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float3 directDiffuse = forwardLight * attenColor;
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float ramp1 = smoothstep( 0.0 , _Outeratmospherelimit , pow(1.0-max(0,dot(i.normalDir, viewDirection)),7.0) );
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float ramp2 = smoothstep( max((_Innerouterlimit-_Inneroutersmoothness),0.0) , min((_Innerouterlimit+_Inneroutersmoothness),1.0) , 1.0-max(0,dot(i.normalDir, viewDirection)));
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float3 diffuseColor = lerp(_Inneratmosphere.rgb,lerp(_Lowatmospherecolor.rgb,_Highatmospherecolor.rgb,ramp1),ramp2);
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float3 diffuse = directDiffuse * diffuseColor;
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/// Final Color:
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float3 finalColor = diffuse;
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return fixed4(finalColor,(lerp(_Inneratmopsheredensity,((1.0 - ramp1)*_Outeratmopsheredensity),ramp2)*saturate((dot(lightDirection,i.normalDir)*2.0))));
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}
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ENDCG
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}
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Pass {
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Name "FORWARD_DELTA"
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Tags {
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"LightMode"="ForwardAdd"
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}
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Blend One One
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ZWrite Off
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Offset -1, -1
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#define UNITY_PASS_FORWARDADD
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#include "UnityCG.cginc"
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#include "AutoLight.cginc"
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#pragma multi_compile_fwdadd
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#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
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#pragma target 3.0
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uniform float4 _LightColor0;
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uniform float4 _Highatmospherecolor;
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uniform float4 _Lowatmospherecolor;
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uniform float _Outeratmopsheredensity;
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uniform float _Inneratmopsheredensity;
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float Smoothstep1( float Minvalue , float Maxvalue , float Value ){
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return smoothstep(Minvalue, Maxvalue, Value);
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}
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float Smoothstep2( float Minvalue , float Maxvalue , float Value ){
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return smoothstep(Minvalue, Maxvalue, Value);
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}
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uniform float _Innerouterlimit;
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uniform float _Inneroutersmoothness;
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uniform float _Outeratmospherelimit;
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uniform float4 _Inneratmosphere;
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struct VertexInput {
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float4 vertex : POSITION;
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float3 normal : NORMAL;
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};
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struct VertexOutput {
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float4 pos : SV_POSITION;
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float4 posWorld : TEXCOORD0;
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float3 normalDir : TEXCOORD1;
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LIGHTING_COORDS(2,3)
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};
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VertexOutput vert (VertexInput v) {
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VertexOutput o = (VertexOutput)0;
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o.normalDir = UnityObjectToWorldNormal(v.normal);
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o.posWorld = mul(unity_ObjectToWorld, v.vertex);
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float3 lightColor = _LightColor0.rgb;
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o.pos = UnityObjectToClipPos(v.vertex);
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TRANSFER_VERTEX_TO_FRAGMENT(o)
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return o;
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}
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float4 frag(VertexOutput i) : COLOR {
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i.normalDir = normalize(i.normalDir);
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/////// Vectors:
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float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
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float3 normalDirection = i.normalDir;
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float3 lightDirection = normalize(lerp(_WorldSpaceLightPos0.xyz, _WorldSpaceLightPos0.xyz - i.posWorld.xyz,_WorldSpaceLightPos0.w));
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float3 lightColor = _LightColor0.rgb;
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float3 halfDirection = normalize(viewDirection+lightDirection);
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////// Lighting:
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float attenuation = LIGHT_ATTENUATION(i);
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float3 attenColor = attenuation * _LightColor0.xyz;
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float NdotL = max(0, dot( normalDirection, lightDirection ));
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/////// Diffuse:
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NdotL = dot( normalDirection, lightDirection );
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float3 w = float3(.25f,.25f,.25f)*0.5; // Light wrapping
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float3 NdotLWrap = NdotL * ( 1.0 - w );
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float3 forwardLight = max(float3(0.0,0.0,0.0), NdotLWrap + w );
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NdotL = max(0.0,dot( normalDirection, lightDirection ));
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float3 directDiffuse = forwardLight * attenColor;
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float ramp1 = smoothstep( 0.0 , _Outeratmospherelimit , pow(1.0-max(0,dot(i.normalDir, viewDirection)),7.0) );
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float ramp2 = Smoothstep2( max((_Innerouterlimit-_Inneroutersmoothness),0.0) , min((_Innerouterlimit+_Inneroutersmoothness),1.0) , 1.0-max(0,dot(i.normalDir, viewDirection)) );
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float3 diffuseColor = lerp(_Inneratmosphere.rgb,lerp(_Lowatmospherecolor.rgb,_Highatmospherecolor.rgb,ramp1),ramp2);
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float3 diffuse = directDiffuse * diffuseColor;
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/// Final Color:
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float3 finalColor = diffuse;
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return fixed4(finalColor * (lerp(_Inneratmopsheredensity,((1.0 - ramp1)*_Outeratmopsheredensity),ramp2)*saturate((dot(lightDirection,i.normalDir)*2.0))),0);
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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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}
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