public static Vector3 GerstnerOffset4(Vector2 vxVtx, Vector4 steepness, Vector4 amp, Vector4 freq, Vector4 speed, Vector4 dirAB, Vector4 dirCD) {
Vector3 offsets = Vector3.zero;
Vector4 AB = Multiply(steepness.SwizzleXXYY(), amp.SwizzleXXYY(), dirAB);
Vector4 CD = Multiply(steepness.SwizzleZZWW(), amp.SwizzleZZWW(), dirCD);
Vector4 dotABCD = Multiply(
freq,
new Vector4(
Vector2.Dot(dirAB.SwizzleXY(), vxVtx),
Vector2.Dot(dirAB.SwizzleZW(), vxVtx),
Vector2.Dot(dirAB.SwizzleXY(), vxVtx),
Vector2.Dot(dirAB.SwizzleZW(), vxVtx)));
Vector4 TIME = Time.timeSinceLevelLoad * speed;
Vector4 COS = Cos(dotABCD + TIME);
Vector4 SIN = Sin(dotABCD + TIME);
offsets.x = Vector4.Dot(COS, new Vector4(AB.x, AB.z, CD.x, CD.z));
offsets.z = Vector4.Dot(COS, new Vector4(AB.y, AB.w, CD.y, CD.w));
offsets.y = Vector4.Dot(SIN, amp);
return offsets;
}
