wip: HouseOfLeaves lookdev

Assets/_Content/Models/Environments/HouseOfLeaves/Materials/M_houseOfLeaves_sand.mat

@@ -117,7 +117,7 @@ Material:
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     - _SandColor: {r: 0.98742133, g: 0.7008138, b: 0, a: 1}
     - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}

Assets/_Content/Scenes/HouseOfLeaves.unity

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Assets/_Content/Shaders/HouseOfLeaves.meta

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Assets/_Content/Shaders/HouseOfLeaves/Include.meta

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Assets/_Content/Shaders/HouseOfLeaves/Include/HouseOfLeaves.hlsl

@@ -0,0 +1,190 @@
+#ifndef HOUSE_OF_LEAVES_INCLUDED
+#define HOUSE_OF_LEAVES_INCLUDED
+
+#include "Assets/_Content/Shaders/Include/Noises.hlsl"
+
+float Hash(float n)
+{
+    return frac(sin(n * 127.1) * 43758.5453123);
+}
+
+float3 ColorRemapRandom
+(
+    float rnd,
+    float3 ColorA,
+    float3 ColorB,
+    float3 ColorC,
+    float3 ColorD,
+    float3 ColorE,
+    float wA,
+    float wB,
+    float wC,
+    float wD
+)
+{
+    if (rnd < wA)
+        return ColorA;
+
+    if (rnd < wA + wB)
+        return ColorB;
+
+    if (rnd < wA + wB + wC)
+        return ColorC;
+
+    if (rnd < wA + wB + wC + wD)
+        return ColorD;
+
+    return ColorE;
+}
+
+float3 ColorRemapLinear
+(
+    float Gradient,
+    float3 ColorA,
+    float3 ColorB,
+    float3 ColorC,
+    float3 ColorD,
+    float3 ColorE
+)
+{
+    float3 col = ColorA;
+    col = lerp(col, ColorB, smoothstep(0.0, .25, Gradient));
+    col = lerp(col, ColorC, smoothstep(.25, .50, Gradient));
+    col = lerp(col, ColorD, smoothstep(.50, .75, Gradient));
+    col = lerp(col, ColorE, smoothstep(.75, 1.0, Gradient));
+
+    return col;
+}
+
+void Sand_float
+(
+    float4 ColorA,
+    float4 ColorB,
+    float4 ColorC,
+    float4 ColorD,
+    float4 ColorE,
+    float Progression,
+    float3 PositionWS,
+    float3 NormalWS,
+    out float3 Color,
+    out float3 Position,
+    out float Height,
+    out float Alpha
+)
+{
+    float t = Progression;
+    t -= RidgedNoise3D(PositionWS, .3, 1, 2, .5) * .3;
+    
+    float depth = length(PositionWS - _WorldSpaceCameraPos.xyz);
+    float arkMask = 0;
+    
+    // Sand
+    
+    float sandLayers = 6;
+    
+    float sandDirection = cos(t * sandLayers * 3.14);
+    
+    float sandPatern = RidgedNoise3D(PositionWS + float3(sandDirection, 0, 0), .6, 1, 2, .5) * .8;
+    sandPatern += 1 - RidgedNoise3D(PositionWS + float3(0, 0, t * sandLayers * 2), .8, 2, 2, .5) * .2;
+    
+    float sandDensity = sqrt(smoothstep(0, 2, abs(PositionWS.x) + sandPatern));
+    
+    float sandGradientSign = (floor(t * sandLayers) % 2 == 0) ? 1 : -1;
+    float sandGradient = smoothstep(2 * -sandGradientSign, 2 * sandGradientSign, PositionWS.x);
+    float sandPhase = frac(t * sandLayers);
+    float sandFlow = smoothstep(sandPhase * 2, sandPhase * 2 - 1, sandGradient);
+    sandFlow = (sandFlow + floor(t * sandLayers)) / sandLayers;
+    
+    float sandMask = sandFlow * 1.5 - t * .8 + (sandPatern * 2 - 1) * sandDensity * t * .3;
+    sandMask *= sandDensity * .7 + .3;
+    
+    // Output
+
+    Color = ColorRemapLinear(saturate(pow(smoothstep(5, 30, depth * sandPatern), .5)), ColorA, ColorB, ColorC, ColorD, ColorE);
+    
+    Position = PositionWS;
+    Position.y += sandMask;
+    
+    Height = sandMask;
+    
+    Alpha = smoothstep(1, .5, abs(smoothstep(-20, 20, PositionWS.x) * 2 - 1));
+}
+
+void HouseOfLeaves_float
+(
+    float4 ColorA,
+    float4 ColorB,
+    float4 ColorC,
+    float4 ColorD,
+    float4 ColorE,
+    float3 PositionWS,
+    float3 NormalWS,
+    out float3 Output
+)
+{
+    float n0 = FBMNoise3D(PositionWS, 01, 2, 2, .5);
+    float n1 = FBMNoise3D(PositionWS * float3(1, 1, .5) + n0 + float3(floor(_Time.y * 1.6), 0, 0), 60, 2, 2, .5);
+    float n2 = PerlinNoise3D(PositionWS * float3(1, 1, 30) + float3(floor(_Time.y * 4), 0, 0), 1);
+    float n3 = RidgedNoise3D(PositionWS * float3(n0, n1, n2 + 4) + float3(floor(_Time.y * 1), 0, 0), .3, 2, 2, 1);
+    
+    float depth = distance(_WorldSpaceCameraPos.xyz, PositionWS);
+    
+    float gradient = smoothstep(-30, 100, PositionWS.z);
+    gradient += ((n1 * 2 - 1) * step(n0, .5)) * .001;
+    gradient += n2 * .006;
+    gradient -= NormalWS.y * .001;
+    
+    float t = 0;
+
+    float bands = 300 + t;
+
+    float bandPos = gradient * bands;
+    float bandIndex = floor(bandPos);
+    float bandFrac = frac(bandPos);
+
+    float wA = pow(1.0 - gradient, 4.0);
+    float wB = pow(1.0 - abs(gradient - .25) * 2.0, 2.0);
+    float wC = pow(1.0 - abs(gradient - .50) * 2.0, 2.0);
+    float wD = pow(1.0 - abs(gradient - .75) * 2.0, 2.0);
+    float wE = .1 + pow(gradient, 4.0);
+
+    float total = wA + wB + wC + wD + wE;
+
+    wA /= total;
+    wB /= total;
+    wC /= total;
+    wD /= total;
+    wE /= total;
+
+    float rnd0 = Hash(bandIndex);
+
+    float3 col0 = ColorRemapRandom(
+        rnd0,
+        ColorA.rgb,
+        ColorB.rgb,
+        ColorC.rgb,
+        ColorD.rgb,
+        ColorE.rgb,
+        wA, wB, wC, wD
+    );
+    
+    float depthAtten = smoothstep(50, 100, depth);
+    
+    float3 col = lerp(col0, _ColorB, n0 - n1);
+    col = lerp(col, _ColorA, smoothstep(.8 - gradient, .7 - gradient, n3) * .8);
+    col = lerp(col, _ColorE, pow(depthAtten, 2));
+    col = lerp(col, _ColorA, pow(smoothstep(.2 + n2 * 4, 0, PositionWS.y), 2) * (1 - depthAtten) * .95);
+    col = lerp(col, _ColorA * .1, smoothstep(0, -30, PositionWS.z));
+    
+    float blendWidth = .05;
+
+    float blend = smoothstep(
+        1.0 - blendWidth,
+        1.0,
+        bandFrac
+    );
+
+    Output = col;
+}
+
+#endif

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