Jam
/
GGJ_2019


								// Made with Amplify Shader Editor

								// Available at the Unity Asset Store - http://u3d.as/y3X

								Shader "ASESampleShaders/ReflectRefractSoapBubble"

								{

									Properties

									{

										[HideInInspector] __dirty( "", Int ) = 1

										_Opacity("Opacity", Range( 0 , 1)) = 0

										_SoapAmount("Soap Amount", Range( 0 , 1)) = 0

										_Specular("Specular", Range( 0 , 1)) = 0

										_IndexofRefraction("Index of Refraction", Range( -3 , 4)) = 1

										_Smoothness("Smoothness", Range( 0 , 1)) = 0.8

										_Foam("Foam", 2D) = "white" {}

										_TextureSample3("Texture Sample 3", 2D) = "white" {}

										[HideInInspector] _texcoord( "", 2D ) = "white" {}

										[Header(Refraction)]

										_ChromaticAberration("Chromatic Aberration", Range( 0 , 0.3)) = 0.1

									}


									SubShader

									{

										Tags{ "RenderType" = "Opaque"  "Queue" = "Transparent+0" }

										Cull Back

										GrabPass{ "RefractionGrab0" }

										CGINCLUDE

										#include "UnityShaderVariables.cginc"

										#include "UnityPBSLighting.cginc"

										#include "Lighting.cginc"

										#pragma target 3.0

										#ifdef UNITY_PASS_SHADOWCASTER

											#undef INTERNAL_DATA

											#undef WorldReflectionVector

											#undef WorldNormalVector

											#define INTERNAL_DATA half3 internalSurfaceTtoW0; half3 internalSurfaceTtoW1; half3 internalSurfaceTtoW2;

											#define WorldReflectionVector(data,normal) reflect (data.worldRefl, half3(dot(data.internalSurfaceTtoW0,normal), dot(data.internalSurfaceTtoW1,normal), dot(data.internalSurfaceTtoW2,normal)))

											#define WorldNormalVector(data,normal) fixed3(dot(data.internalSurfaceTtoW0,normal), dot(data.internalSurfaceTtoW1,normal), dot(data.internalSurfaceTtoW2,normal))

										#endif

										struct Input

										{

											float3 worldNormal;

											INTERNAL_DATA

											float3 worldPos;

											float2 uv_texcoord;

											float4 screenPos;

										};


										uniform float _Specular;

										uniform sampler2D _TextureSample3;

										uniform sampler2D _Foam;

										uniform float4 _Foam_ST;

										uniform float _SoapAmount;

										uniform float _Smoothness;

										uniform float _Opacity;

										uniform sampler2D RefractionGrab0;

										uniform float _ChromaticAberration;

										uniform float _IndexofRefraction;


										void vertexDataFunc( inout appdata_full v, out Input o )

										{

											UNITY_INITIALIZE_OUTPUT( Input, o );

											float3 temp_cast_0 = ( ( cos( ( ( 5.0 * v.vertex.y ) + _Time.y ) ) * 0.015 ) + ( sin( ( ( 5.0 * v.vertex.y ) + _Time.y ) ) * 0.005 ) );

											v.vertex.xyz += temp_cast_0;

										}


										inline float4 Refraction( Input i, SurfaceOutputStandardSpecular o, float indexOfRefraction, float chomaticAberration ) {

											float3 worldNormal = o.Normal;

											float4 screenPos = i.screenPos;

											#if UNITY_UV_STARTS_AT_TOP

												float scale = -1.0;

											#else

												float scale = 1.0;

											#endif

											float halfPosW = screenPos.w * 0.5;

											screenPos.y = ( screenPos.y - halfPosW ) * _ProjectionParams.x * scale + halfPosW;

											#if SHADER_API_D3D9 || SHADER_API_D3D11

												screenPos.w += 0.0000001;

											#endif

											float2 projScreenPos = ( screenPos / screenPos.w ).xy;

											float3 worldViewDir = normalize( UnityWorldSpaceViewDir( i.worldPos ) );

											float3 refractionOffset = ( ( ( ( indexOfRefraction - 1.0 ) * mul( UNITY_MATRIX_V, float4( worldNormal, 0.0 ) ) ) * ( 1.0 / ( screenPos.z + 1.0 ) ) ) * ( 1.0 - dot( worldNormal, worldViewDir ) ) );

											float2 cameraRefraction = float2( refractionOffset.x, -( refractionOffset.y * _ProjectionParams.x ) );

											float4 redAlpha = tex2D( RefractionGrab0, ( projScreenPos + cameraRefraction ) );

											float green = tex2D( RefractionGrab0, ( projScreenPos + ( cameraRefraction * ( 1.0 - chomaticAberration ) ) ) ).g;

											float blue = tex2D( RefractionGrab0, ( projScreenPos + ( cameraRefraction * ( 1.0 + chomaticAberration ) ) ) ).b;

											return float4( redAlpha.r, green, blue, redAlpha.a );

										}


										void RefractionF( Input i, SurfaceOutputStandardSpecular o, inout fixed4 color )

										{

											#ifdef UNITY_PASS_FORWARDBASE

												color.rgb = color.rgb + Refraction( i, o, _IndexofRefraction, _ChromaticAberration ) * ( 1 - color.a );

												color.a = 1;

											#endif

										}


										void surf( Input i , inout SurfaceOutputStandardSpecular o )

										{

											o.Normal = float3(0,0,1);

											float3 worldViewDir = normalize( UnityWorldSpaceViewDir( i.worldPos ) );

											float4 temp_cast_0 = _Specular;

											float2 uv_Foam = i.uv_texcoord * _Foam_ST.xy + _Foam_ST.zw;

											float2 temp_cast_1 = ( ( tex2D( _Foam,(abs( uv_Foam+(_SinTime.x*0.5 + 0.5) * float2(1,1 )))).r + ( abs( (uv_Foam.x*2.0 + -1.0) ) * 0.5 ) ) + _Time.x );

											o.Specular = ( ( 1.0 - saturate( ( pow( dot( WorldNormalVector( i, float3(0,0,1) ) , worldViewDir ) , 2.0 ) - 0.1 ) ) ) * lerp( temp_cast_0 , saturate( tex2D( _TextureSample3,temp_cast_1) ) , _SoapAmount ) ).xyz;

											o.Smoothness = _Smoothness;

											o.Alpha = _Opacity;

											o.Normal = o.Normal + 0.00001 * i.screenPos * i.worldPos;

										}


										ENDCG

										CGPROGRAM

										#pragma multi_compile _ALPHAPREMULTIPLY_ON

										#pragma surface surf StandardSpecular keepalpha finalcolor:RefractionF exclude_path:deferred vertex:vertexDataFunc


										ENDCG

										Pass

										{

											Name "ShadowCaster"

											Tags{ "LightMode" = "ShadowCaster" }

											ZWrite On

											CGPROGRAM

											#pragma vertex vert

											#pragma fragment frag

											#pragma target 3.0

											#pragma multi_compile_instancing

											#pragma multi_compile_shadowcaster

											#pragma multi_compile UNITY_PASS_SHADOWCASTER

											#pragma skip_variants FOG_LINEAR FOG_EXP FOG_EXP2

											# include "HLSLSupport.cginc"

											#if ( SHADER_API_D3D11 || SHADER_API_GLCORE || SHADER_API_GLES3 || SHADER_API_METAL || SHADER_API_VULKAN )

												#define CAN_SKIP_VPOS

											#endif

											#include "UnityCG.cginc"

											#include "Lighting.cginc"

											#include "UnityPBSLighting.cginc"

											sampler3D _DitherMaskLOD;

											struct v2f

											{

												V2F_SHADOW_CASTER;

												float3 worldPos : TEXCOORD6;

												float4 tSpace0 : TEXCOORD1;

												float4 tSpace1 : TEXCOORD2;

												float4 tSpace2 : TEXCOORD3;

												float4 texcoords01 : TEXCOORD4;

												UNITY_VERTEX_INPUT_INSTANCE_ID

											};

											v2f vert( appdata_full v )

											{

												v2f o;

												UNITY_SETUP_INSTANCE_ID( v );

												UNITY_INITIALIZE_OUTPUT( v2f, o );

												UNITY_TRANSFER_INSTANCE_ID( v, o );

												Input customInputData;

												vertexDataFunc( v, customInputData );

												float3 worldPos = mul( unity_ObjectToWorld, v.vertex ).xyz;

												half3 worldNormal = UnityObjectToWorldNormal( v.normal );

												fixed3 worldTangent = UnityObjectToWorldDir( v.tangent.xyz );

												fixed tangentSign = v.tangent.w * unity_WorldTransformParams.w;

												fixed3 worldBinormal = cross( worldNormal, worldTangent ) * tangentSign;

												o.tSpace0 = float4( worldTangent.x, worldBinormal.x, worldNormal.x, worldPos.x );

												o.tSpace1 = float4( worldTangent.y, worldBinormal.y, worldNormal.y, worldPos.y );

												o.tSpace2 = float4( worldTangent.z, worldBinormal.z, worldNormal.z, worldPos.z );

												o.texcoords01 = float4( v.texcoord.xy, v.texcoord1.xy );

												o.worldPos = worldPos;

												TRANSFER_SHADOW_CASTER_NORMALOFFSET( o )

												return o;

											}

											fixed4 frag( v2f IN

											#if !defined( CAN_SKIP_VPOS )

											, UNITY_VPOS_TYPE vpos : VPOS

											#endif

											) : SV_Target

											{

												UNITY_SETUP_INSTANCE_ID( IN );

												Input surfIN;

												UNITY_INITIALIZE_OUTPUT( Input, surfIN );

												surfIN.uv_texcoord = IN.texcoords01.xy;

												float3 worldPos = float3( IN.tSpace0.w, IN.tSpace1.w, IN.tSpace2.w );

												fixed3 worldViewDir = normalize( UnityWorldSpaceViewDir( worldPos ) );

												surfIN.worldPos = worldPos;

												surfIN.worldNormal = float3( IN.tSpace0.z, IN.tSpace1.z, IN.tSpace2.z );

												surfIN.internalSurfaceTtoW0 = IN.tSpace0.xyz;

												surfIN.internalSurfaceTtoW1 = IN.tSpace1.xyz;

												surfIN.internalSurfaceTtoW2 = IN.tSpace2.xyz;

												SurfaceOutputStandardSpecular o;

												UNITY_INITIALIZE_OUTPUT( SurfaceOutputStandardSpecular, o )

												surf( surfIN, o );

												#if defined( CAN_SKIP_VPOS )

												float2 vpos = IN.pos;

												#endif

												half alphaRef = tex3D( _DitherMaskLOD, float3( vpos.xy * 0.25, o.Alpha * 0.9375 ) ).a;

												clip( alphaRef - 0.01 );

												SHADOW_CASTER_FRAGMENT( IN )

											}

											ENDCG

										}

									}

									Fallback "Diffuse"

									CustomEditor "ASEMaterialInspector"

								}

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