chore: Project Restructuring & Theatre

Assets/_Content/Shaders/EnkiBillal/Include/Stripes.hlsl

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+#ifndef STRIPES_INCLUDED
+#define STRIPES_INCLUDED
+
+// Returns a value in [0, 1)
+float VanDerCorput(uint index)
+{
+    // Reverse bits of the integer and scale to [0,1]
+    return (float) reversebits(index) * 2.3283064365386963e-10;
+}
+
+void Stripes_float(
+    float2 UV,
+    float Density,
+    float Count,
+    float Thickness,
+    float Offset,
+    float DistortionAmplitude,
+    float DistortionFrequency,
+    out float Stripes
+)
+{
+    float density = saturate(Density);
+    float offset = frac(Offset);
+    float distortionAmplitude = DistortionAmplitude * .1;
+    uint stripeCount = max((uint) round(Count), 1u);
+
+    float2 uv = UV;
+    uv.x += offset;
+    
+    float2 uvA = uv;
+    float2 uvB = uv;
+    uvA.x = frac(uvA.x + cos((uv.y + offset) * sin(uv.x) * DistortionFrequency + offset * 7.8) * distortionAmplitude);
+    uvB.x = frac(uvB.x + sin((uv.y + offset) * cos(uv.x) * DistortionFrequency + offset * 5.3) * distortionAmplitude);
+    
+    float stripDistanceY = abs(saturate(uv.y) - .5);
+
+    float stripeMax = 0;
+    
+    for (uint i = 0u; i < stripeCount; i++)
+    {
+        float vdc = VanDerCorput(i);
+        bool usesSecondDistortion = vdc >= .5;
+
+        float thickness = vdc < .3 ? 1 : (vdc < .6 ? 1.8 : 2.6);
+        thickness *= saturate(Thickness);
+        
+        float wrappedX = usesSecondDistortion ? uvB.x : uvA.x;
+
+        float localProgress = saturate(density * stripeCount - vdc * stripeCount);
+
+        float stripeCenterX = frac((i + .5) / stripeCount);
+        float stripDistanceX = abs(wrappedX - stripeCenterX);
+        stripDistanceX = min(stripDistanceX, 1.0 - stripDistanceX);
+
+        float stepX = (1. / stripeCount) * localProgress * thickness * .5;
+        float stepY = localProgress * .5 - .01;
+
+        float softEdgeX = .01;
+        float softEdgeY = .05;
+
+        float widthMask = 1 - smoothstep(stepX - softEdgeX, stepX, stripDistanceX);
+        float heightMask = 1 - smoothstep(stepY - softEdgeY, stepY, stripDistanceY);
+
+        float stripeMask = widthMask * heightMask;
+        stripeMax = max(stripeMax, stripeMask);
+    }
+
+    Stripes = stripeMax;
+}
+
+#endif