268 lines
8.1 KiB
Plaintext
268 lines
8.1 KiB
Plaintext
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Shader "MY/PBR/Water"
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{
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Properties
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{
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_LightColor("LightColor", Color) = (1,1,1,1)
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_Metallic("Metallic", Range(0, 1)) = 0
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_Roughness("Roughness", Range(0, 1)) = 0.7503998
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[NoScaleOffset]_WaterAlphaTexture("WaterAlphaTexture", 2D) = "white" {}
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_WaterAlphaPower("WaterAlphaPower", Range(0, 1)) = 0.7863253
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[NoScaleOffset]_WaterColorTexture("WaterColorTexture", 2D) = "white" {}
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[NoScaleOffset]_Normal_A_Texture("Normal_A_Texture", 2D) = "bump" {}
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_Normal_A_Scale("Normal_A_Scale(int)", int) = 10
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_NormalA_Time_U("NormalA_Time_U", Float) = 0
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_NormalA_Time_V("NormalA_Time_V", Float) = 0
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[NoScaleOffset]_Normal_B_Texture("Normal_B_Texture", 2D) = "bump" {}
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_Normal_B_Scale("Normal_B_Scale(int)", int) = 10
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_NormalB_Time_U("NormalB_Time_U", Float) = 0
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_NormalB_Time_V("NormalB_Time_V", Float) = 0
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_CausticsPower("CausticsPower", Range(0, 1)) = 1
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_LightDir("Light Dir",Vector) = (1,1,1,1)
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}
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SubShader
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{
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Lod 200
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Tags{ "IgnoreProjector" = "True" "Queue" = "Geometry+10" "RenderType" = "Transparent" }
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Pass
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{
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Name "FORWARD"
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Tags {"LightMode" = "ForwardBase"}
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Blend SrcAlpha OneMinusSrcAlpha
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ZWrite Off
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "HLSLSupport.cginc"
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#include "UnityCG.cginc"
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#include "Lighting.cginc"
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#include "AutoLight.cginc"
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#pragma multi_compile_fog
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#pragma multi_compile_fwdbase
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uniform fixed4 _LightColor;
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uniform fixed _Metallic;
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uniform fixed _Roughness;
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uniform fixed _WaterAlphaPower;
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uniform sampler2D _WaterAlphaTexture;
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uniform fixed4 _WaterAlphaTexture_ST;
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uniform sampler2D _WaterColorTexture;
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uniform fixed4 _WaterColorTexture_ST;
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uniform sampler2D _Normal_A_Texture;
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uniform fixed4 _Normal_A_Texture_ST;
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uniform sampler2D _Normal_B_Texture;
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uniform fixed4 _Normal_B_Texture_ST;
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uniform float _NormalA_Time_U;
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uniform float _NormalA_Time_V;
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uniform int _Normal_A_Scale;
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uniform float _NormalB_Time_U;
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uniform float _NormalB_Time_V;
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uniform int _Normal_B_Scale;
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uniform fixed _CausticsPower;
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uniform float4 _LightDir;
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struct VertexInput
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{
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float4 vertex : POSITION;
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float3 normal : NORMAL;
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float4 tangent : TANGENT;
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float2 texcoord0 : TEXCOORD0;
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float2 texcoord1 : TEXCOORD1;
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float4 texcoord2 : TEXCOORD2;
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};
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struct VertexOutput
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{
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float4 pos : SV_POSITION;
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float2 uv0 : TEXCOORD0;
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float2 uv1 : TEXCOORD1;
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float4 uv2 : TEXCOORD2;
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float4 posWorld : TEXCOORD3;
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fixed3 normalDir : TEXCOORD4;
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fixed3 tangentDir : TEXCOORD5;
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fixed3 bitangentDir : TEXCOORD6;
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UNITY_FOG_COORDS(7)
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};
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VertexOutput vert(VertexInput v)
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{
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VertexOutput o = (VertexOutput)0;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv0.xy = TRANSFORM_TEX(v.texcoord0.xy, _WaterColorTexture);
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float2 UV = TRANSFORM_TEX(v.texcoord1.xy, _Normal_A_Texture);
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o.uv1.xy = UV;
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float NATU = fmod(_Time*_NormalA_Time_U, 1);
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float NATV = fmod(_Time*_NormalA_Time_V, 1);
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o.uv1.xy = (UV + float2(NATU, NATV)) * _Normal_A_Scale;
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float NBTU = fmod(_Time*_NormalB_Time_U, 1);
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float NBTV = fmod(_Time*_NormalB_Time_V, 1);
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o.uv2.xy = (UV + float2(NBTU, NBTV)) * _Normal_B_Scale;
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o.normalDir = UnityObjectToWorldNormal(v.normal);
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o.tangentDir = normalize(mul(unity_ObjectToWorld, fixed4(v.tangent.xyz, 0.0)).xyz);
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o.bitangentDir = normalize(cross(o.normalDir, o.tangentDir) * v.tangent.w);
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o.posWorld = mul(unity_ObjectToWorld, v.vertex);
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UNITY_TRANSFER_FOG(o,o.pos);
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return o;
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}
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fixed4 frag(VertexOutput i) : COLOR
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{
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fixed4 _MainTex = tex2D(_WaterColorTexture , i.uv0);
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fixed3 Color = _MainTex.rgb;
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fixed3 diffuseColor = Color;
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fixed3 specular = fixed3(0, 0, 0);
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i.normalDir = normalize(i.normalDir) + normalize(_LightDir.xyz);
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fixed3x3 tangentTransform = fixed3x3(i.tangentDir, i.bitangentDir, i.normalDir);
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fixed3 viewDir = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
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fixed3 _Normal_A = UnpackNormal(tex2D(_Normal_A_Texture, i.uv1));
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fixed3 _Normal_B = UnpackNormal(tex2D(_Normal_B_Texture, i.uv2));
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fixed3 normal = normalize(mul(_Normal_A.rgb * _Normal_B.rgb, tangentTransform));
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fixed3 lightdir = normalize(_WorldSpaceLightPos0.xyz);
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fixed3 lightColor = _LightColor0.rgb;
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fixed3 floatDir = normalize(viewDir + lightdir);
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fixed gloss = _Roughness;
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fixed perceptualRoughness = 1.0 - _Roughness;
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fixed roughness = perceptualRoughness * perceptualRoughness;
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fixed3 specColor;
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fixed smoothness;
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diffuseColor = DiffuseAndSpecularFromMetallic(diffuseColor, _Metallic, specColor, smoothness);
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smoothness = 1.0 - smoothness;
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fixed NL = saturate(dot(normal, lightdir));
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fixed LH = saturate(dot(lightdir, floatDir));
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fixed NV = abs(dot(normal, viewDir));
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fixed NH = saturate(dot(normal, floatDir));
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fixed V = SmithJointGGXVisibilityTerm(NL, NV, roughness);
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fixed D = GGXTerm(NH, roughness);
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fixed specularTerm = V * D * UNITY_PI;
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specularTerm = sqrt(max(1e-4h, specularTerm));
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specular = _LightColor0.xyz*specularTerm*FresnelTerm(specColor, LH);
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UnityLight light;
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light.color = lightColor;
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light.dir = lightdir;
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Unity_GlossyEnvironmentData ugls_en_data;
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ugls_en_data.roughness = 1.0 - gloss;
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ugls_en_data.reflUVW = reflect(-viewDir, normal);
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fixed3 indirectSpecular = Unity_GlossyEnvironment(UNITY_PASS_TEXCUBE(unity_SpecCube0), unity_SpecCube0_HDR, ugls_en_data);
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specular = (specular + indirectSpecular)* specColor;
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fixed4 _WaterAlphaTexture_var = tex2D(_WaterAlphaTexture, i.uv0);
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fixed WaterAlpha = _WaterAlphaTexture_var.r;
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fixed WAWP = WaterAlpha * _WaterAlphaPower;
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fixed CTP = (1.0 - WAWP)*_CausticsPower;
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fixed3 emissive = fixed3(CTP, CTP, CTP);
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fixed3 finalColor = fixed3(diffuseColor + specular * _LightColor + emissive);
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fixed Alpha = (CTP + WAWP)*_LightColor.a;
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fixed4 finalRGBA = fixed4(finalColor,Alpha);
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UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
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return finalRGBA;
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}
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ENDCG
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}
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}
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SubShader
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{
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Lod 100
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Tags{ "IgnoreProjector" = "True" "Queue" = "Geometry" "RenderType" = "Transparent" }
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Pass
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{
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Blend SrcAlpha OneMinusSrcAlpha
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ZWrite Off
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "HLSLSupport.cginc"
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#include "UnityCG.cginc"
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#pragma multi_compile_fog
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#pragma multi_compile_fwdbase
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uniform fixed4 _LightColor;
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uniform fixed _WaterAlphaPower;
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uniform sampler2D _WaterAlphaTexture;
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uniform fixed4 _WaterAlphaTexture_ST;
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uniform sampler2D _WaterColorTexture;
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uniform fixed4 _WaterColorTexture_ST;
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uniform fixed _CausticsPower;
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struct VertexInput
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{
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float4 vertex : POSITION;
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float3 normal : NORMAL;
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float4 tangent : TANGENT;
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float2 texcoord0 : TEXCOORD0;
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};
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struct VertexOutput
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{
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float4 pos : SV_POSITION;
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float2 uv0 : TEXCOORD0;
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UNITY_FOG_COORDS(1)
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};
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VertexOutput vert(VertexInput v)
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{
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VertexOutput o = (VertexOutput)0;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv0.xy = TRANSFORM_TEX(v.texcoord0.xy, _WaterColorTexture);
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UNITY_TRANSFER_FOG(o,o.pos);
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return o;
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}
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fixed4 frag(VertexOutput i) : COLOR
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{
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fixed4 _MainTex = tex2D(_WaterColorTexture , i.uv0);
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fixed3 Color = _MainTex.rgb;
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fixed3 diffuseColor = Color;
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fixed3 specular = fixed3(0, 0, 0);
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fixed4 _WaterAlphaTexture_var = tex2D(_WaterAlphaTexture, i.uv0);
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fixed WaterAlpha = _WaterAlphaTexture_var.r;
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fixed WAWP = WaterAlpha * _WaterAlphaPower;
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fixed CTP = (1.0 - WAWP) * _CausticsPower;
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fixed3 emissive = fixed3(CTP, CTP, CTP);
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fixed3 finalColor = fixed3(diffuseColor + specular * _LightColor + emissive);
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fixed Alpha = (CTP + WAWP)*_LightColor.a;
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fixed4 finalRGBA = fixed4(finalColor,Alpha);
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UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
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return finalRGBA;
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}
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ENDCG
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}
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}
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}
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