Init

Assets/Script/Compute/Noise.compute

@@ -0,0 +1,43 @@
+// Each #kernel tells which function to compile; you can have many kernels
+#pragma kernel Noise
+#include "Noises/SimplexNoise.compute"
+
+
+RWStructuredBuffer<float4> points;
+int numPointsPerAxis;
+
+int octaves;
+float frequency;
+float persistence;
+float amplitude;
+float4 offset;
+
+int indexFromCoord(int x, int y, int z) {
+    return z * numPointsPerAxis * numPointsPerAxis + y * numPointsPerAxis + x;
+}
+[numthreads(8,8,8)]
+void Noise (int3 id : SV_DispatchThreadID)
+{
+    if (id.x >= numPointsPerAxis || id.y >= numPointsPerAxis || id.z >= numPointsPerAxis) {
+        return;
+    }
+
+    float maxAmp = 0;
+    float noise = 0;
+
+    for(int i = 0; i < octaves; i++)
+    {
+        float3 new_id = (id + offset.xyz)* frequency;
+        noise += snoise(new_id) * amplitude;
+        maxAmp += amplitude;
+        amplitude *= persistence;
+        frequency *= 2;
+    }
+    noise /= maxAmp;
+
+    
+    int index = indexFromCoord(id.x,id.y,id.z);
+    points[index] = float4(id, noise);
+}
+
+