[A] wave foam

Assets/Scenes/SampleScene.unity

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Assets/Test/InverLerp.shadergraph.meta

@@ -0,0 +1,10 @@
+fileFormatVersion: 2
+guid: 6dae9b46c2add4940867c806b0665857
+ScriptedImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 2
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
+  script: {fileID: 11500000, guid: 625f186215c104763be7675aa2d941aa, type: 3}

Packages/zzwater/Mats/Ocean_tess.mat

@@ -107,14 +107,14 @@ Material:
     - _GlossyReflections: 0
     - _HorizonDistance: 26.6
     - _InterscetionSpeed: 1
-    - _IntersectionClipping: 0.735
+    - _IntersectionClipping: 0.407
     - _IntersectionDurationMulti: 1
-    - _IntersectionDurationMulti1: 3.45
+    - _IntersectionDurationMulti1: 2.53
-    - _IntersectionDurationMulti2: 1.45
+    - _IntersectionDurationMulti2: 0.83
-    - _IntersectionFalloff: 0.451
+    - _IntersectionFalloff: 0.73
-    - _IntersectionLength: 1.43
+    - _IntersectionLength: 2.03
-    - _IntersectionSpeed: -0.21
+    - _IntersectionSpeed: 0.2
-    - _IntersectionTiling: 1.27
+    - _IntersectionTiling: 0.82
     - _Metallic: 0
     - _OcclusionStrength: 1
     - _Parallax: 0.005
@@ -133,31 +133,37 @@ Material:
     - _Surface: 0
     - _TessMax: 15
     - _TessMin: 0
-    - _TessValue: 19.2
+    - _TessValue: 16
     - _TranslucencyCurvatureMask: 0.708
     - _TranslucencyExp: 10
     - _TranslucencyReflectionMask: 0.764
     - _TranslucencyStrength: 0.7
     - _TranslucencyStrengthDirect: 0.443
-    - _WaveCount: 3
+    - _WaveCount: 2
-    - _WaveDistance: 0.764
+    - _WaveDistance: 0.808
-    - _WaveHeight: 0.17
+    - _WaveFoamBaseLvl: -2.66
+    - _WaveFoamClipping: 0.328
+    - _WaveFoamExp: 5
+    - _WaveFoamLength: 1
+    - _WaveHeight: 0.23
+    - _WaveMesureMax: -2.51
+    - _WaveMesureMin: -2.68
     - _WaveNormalStr: 0.2
-    - _WaveSpeed: 1.2
+    - _WaveSpeed: 1
-    - _WaveSteepness: 3.76
+    - _WaveSteepness: 3.65
     - _WorkflowMode: 1
     - _ZWrite: 1
     m_Colors:
     - _BaseColor: {r: 0.01619794, g: 0.20062576, b: 0.26415092, a: 0.9490196}
     - _Color: {r: 1, g: 1, b: 1, a: 1}
-    - _Direction: {r: 1, g: 1, b: 0, a: 0}
+    - _Direction: {r: 0.66, g: -1, b: 0, a: 0}
     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
     - _HorizonColor: {r: 0.09376113, g: 0.10980392, b: 0.32156864, a: 1}
-    - _IntersectionColor: {r: 1, g: 1, b: 1, a: 1}
+    - _IntersectionColor: {r: 0.9622642, g: 0.9577252, b: 0.9577252, a: 1}
     - _ShallowColor: {r: 0.105882354, g: 0.4117647, b: 0.62352943, a: 0.9372549}
     - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
     - _WaveDirection: {r: 1, g: 1, b: 1, a: 2}
-    - _WaveFadeDistance: {r: 0, g: 200, b: 0, a: 0}
+    - _WaveFadeDistance: {r: 100, g: 200, b: 0, a: 0}
   m_BuildTextureStacks: []
 --- !u!114 &1635733923474585344
 MonoBehaviour:

Packages/zzwater/Tex/Intersection_Foam.png.meta

@@ -34,8 +34,8 @@ TextureImporter:
   maxTextureSize: 2048
   textureSettings:
     serializedVersion: 2
-    filterMode: 1
+    filterMode: 0
-    aniso: 1
+    aniso: 3
     mipBias: 0
     wrapU: 0
     wrapV: 0

Packages/zzwater/shaders/libs/ForwardPass.hlsl

@@ -96,23 +96,34 @@ float4 ForwardPassFragment(Varyings input) : SV_Target
 
 	water.alpha *= water.edgeFade;
 
+
+    // Wave Mesure
+
+
+    float waveMesure = (positionWS.y - _WaveMesureMin) / (_WaveMesureMax - _WaveMesureMin);
+
+    float2 nUV = positionWS.xz * _IntersectionTiling;
+    float foamTexNoise = SAMPLE_TEXTURE2D(_IntersectionNoise, sampler_IntersectionNoise, nUV + TIME_VERTEX/_IntersectionTiling * _IntersectionSpeed).r;
+
+    // remap wave from  [_WaveFoamClipping,1] to [0,1]
+    float waveFoamNoise = (waveMesure - _WaveFoamClipping) / (1 - _WaveFoamClipping) * foamTexNoise;
+    //return float4(waveFoamNoise.xxx, 1);
+
 	/* ========
 	// Intercection
 	=========== */
 
 
 	float interSecGradient = 1-saturate(exp(scene.verticalDepth) / _IntersectionLength);	
-	float sine1 = sin(_TimeParameters.x * _IntersectionDurationMulti1 + positionWS.x - interSecGradient );
+    float intersecMesure = waveMesure * interSecGradient;
-	float sine2 = sin(_TimeParameters.x * _IntersectionDurationMulti2 + positionWS.z - interSecGradient );
-    float sine = sine1 * sine2 * interSecGradient;
 
-    float2 nUV = positionWS.xz * _IntersectionTiling;
 	float dist = saturate(interSecGradient / _IntersectionFalloff);
 
-    float noise = SAMPLE_TEXTURE2D(_IntersectionNoise, sampler_IntersectionNoise, nUV + TIME_VERTEX/_IntersectionTiling * _IntersectionSpeed).r;
+    float inersecNoise = saturate(foamTexNoise + intersecMesure) * dist + dist;
-    noise = saturate(noise + sine) * dist + dist;
+    inersecNoise = smoothstep(_IntersectionClipping, 1, inersecNoise);
-    noise = smoothstep(_IntersectionClipping, 1, noise);
+
-    //noise = step(_IntersectionClipping, noise);
+
+    float noise = saturate(inersecNoise + waveFoamNoise);
 
 	water.albedo.rgb = lerp(water.albedo.rgb, _IntersectionColor.rgb, noise);
     water.alpha = saturate(water.alpha + interSecGradient);
@@ -131,7 +142,7 @@ float4 ForwardPassFragment(Varyings input) : SV_Target
 	float cosTheta = saturate(dot(normalWS, viewDir));	
 	water.reflectionMask = pow(max(0.0, 1.000293 - cosTheta), _ReflectionFresnel) * _ReflectionStrength; 
 
-    water.albedo = lerp(water.albedo, water.reflections.rgb, water.reflectionMask);
+    water.albedo = lerp(water.albedo, water.reflections.rgb, water.reflectionMask - noise);
 
 
     // =================== Make ApplyLight simple =========================

Packages/zzwater/shaders/libs/Input.hlsl

@@ -39,8 +39,12 @@ CBUFFER_START(UnityPerMaterial)
     half _IntersectionSpeed;
     half _IntersectionClipping;
     half _IntersectionFalloff;
-    half _IntersectionDurationMulti1;
+
-    half _IntersectionDurationMulti2;
+    // Wave foam
+    half _WaveMesureMin;
+    half _WaveMesureMax;
+    half _WaveFoamClipping;
+
 
 
     //Waves

Packages/zzwater/shaders/ocean.shader

@@ -28,10 +28,13 @@ Shader "zzwater/ocean"
         _IntersectionSpeed("Intersection Speed Multi", Float) = 1
 		_IntersectionClipping("Cutoff", Range(0.01, 1)) = 0.5
 		_IntersectionFalloff("Falloff", Range(0.01 , 1)) = 0.5
-		_IntersectionDurationMulti1("Intersection Duration Multi 1", Range(0.01, 10)) = 0.5
-		_IntersectionDurationMulti2("Intersection Duration Multi 2", Range(0.01, 10)) = 0.5
 		_IntersectionLength("Intersection Distance", Range(0.01 , 5)) = 2
 
+        // Wave foam
+        _WaveMesureMin("Wave Mesure Min", float) = 0
+        _WaveMesureMax("Wave Mesure Max", float) = 0.3
+        _WaveFoamClipping("Wave Cutoff", Range(0.01,1)) = 1
+
 
         //waves
 		_WaveSpeed("Speed", Float) = 2

Packages/zzwater/shaders/ocean_tess.shader

@@ -34,10 +34,13 @@ Shader "zzwater/ocean_tess"
         _IntersectionSpeed("Intersection Speed Multi", Float) = 1
 		_IntersectionClipping("Cutoff", Range(0.01, 1)) = 0.5
 		_IntersectionFalloff("Falloff", Range(0.01 , 1)) = 0.5
-		_IntersectionDurationMulti1("Intersection Duration Multi 1", Range(0.01, 10)) = 0.5
-		_IntersectionDurationMulti2("Intersection Duration Multi 2", Range(0.01, 10)) = 0.5
 		_IntersectionLength("Intersection Distance", Range(0.01 , 5)) = 2
 
+        // Wave foam
+        _WaveMesureMin("Wave Mesure Min", float) = 0
+        _WaveMesureMax("Wave Mesure Max", float) = 0.3
+        _WaveFoamClipping("Wave Cutoff", Range(0.01,1)) = 1
+
 
         //waves
 		_WaveSpeed("Speed", Float) = 2