Release v0.9.6

Editor/Internal Data/Third Party/Shaders/Layers/PerlinNoise.hlsl

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+// Licensed under the Non-Profit Open Software License version 3.0
+
+// Variables
+uint PerlinType;
+float PerlinAmplitude;
+float PerlinFrequency;
+float2 PerlinOffset;
+uint PerlinOctaves;
+float PerlinOctavesStrength;
+
+// Methods
+float StandardPerlinNoise(uint id, float amplitude, float2 offset){
+    // Calculate vector
+    float2 pos = IndexToFloatVector(id, HeightMapResolution);
+    
+    // Calculate x and y position
+    float x = float(pos.x) / HeightMapResolution;
+    float y = float(pos.y) / HeightMapResolution;
+    
+    // Generate noise
+    return cnoise(float2(x * amplitude + offset.x, y * amplitude + offset.y));
+}
+
+float BillowyPerlinNoise(uint id, float amplitude, float2 offset){
+    float noise = StandardPerlinNoise(id, amplitude, offset);
+    return abs(noise * 2 - 1);
+}
+
+float RigidPerlinNoise(uint id, float amplitude, float2 offset){
+    return 1 - BillowyPerlinNoise(id, amplitude, offset);;
+}
+
+// Kernel
+[numthreads(32,1,1)]
+void PerlinNoise (uint3 id : SV_DispatchThreadID)
+{
+    if(id.x < HeightMapLength){ // Keep in bounds
+        float total = 0;
+        float frequency = PerlinFrequency;
+        float amplitude = 1;
+        float maxvalue = 0;
+        
+        for(uint i = 0; i < PerlinOctaves; i++){
+        
+            // Types
+            if(PerlinType == 0){ // Standard
+                total += StandardPerlinNoise(id.x, frequency, PerlinOffset) * amplitude;
+            } else if(PerlinType == 1){ // Billowy
+                total += BillowyPerlinNoise(id.x, frequency, PerlinOffset) * amplitude;
+            } else if(PerlinType == 2){ // Rigid
+                total += RigidPerlinNoise(id.x, frequency, PerlinOffset) * amplitude;
+            }
+            
+            maxvalue += amplitude;
+            amplitude *= PerlinOctavesStrength;
+            frequency *= 2;
+        }
+        
+        // Update buffer
+        HeightBuffer[id.x] = total/maxvalue;
+    }
+}