Moving Work to the GPU

Assets/Script/FunctionLibrary.compute

@@ -0,0 +1,39 @@
+#pragma kernel FuncationKernel
+
+RWStructuredBuffer<float3> _Positions;
+
+uint _Resolution;
+
+float _Step;
+float _Time;
+
+float2 GetUV(uint3 id)
+{
+	return (id.xy + 0.5) * _Step - 1.0;
+}
+
+void SetPositions(uint3 id, float3 positions)
+{
+	if (id.x < _Resolution && id.y < _Resolution) 
+	{
+		_Positions[id.x + id.y * _Resolution] = positions;
+	}
+}
+
+#define PI 3.14159265358979323846
+
+float3 Wave(float u, float v, float t)
+{
+    float3 p;
+    p.x = u;
+    p.y = sin(PI * (u + v + t));
+    p.z = v;
+    return p;
+}
+
+[numthreads(8, 8, 1)]
+void FuncationKernel(uint3 id : SV_DISPATCHTHREADID)
+{
+	float2 uv = GetUV(id);
+	SetPositions(id, Wave(uv.x, uv.y, _Time));
+}