some question about gregtech.worldgen.NoiseGenerator

[mordds]

I Noticed that these two NoiseGenerator are actually generate EXACTLY SAME noise value.

NoiseGenerator gen1 = new NoiseGenerator(1);
NoiseGenerator gen2 = new NoiseGenerator(2097153);

Is it work as intended?
Note:this NoiseGenerator is used to generate stonelayer of GT6. (which make it easy to get the noise value and find the potenial seed.and it also makes it really valuable to find the seed candidate in server.)
Note 2: This might be the problem(or feature) of Hash3D,since we only use the low 8 bit of Hash3D.

	private static int Hash3D(int seed, int x, int y, int z) {
		int hash = seed;
		hash ^= X_PRIME * x;
		hash ^= Y_PRIME * y;
		hash ^= Z_PRIME * z;
        //for same x,y,z.the seed just xor with 3 Certain number                
        //so the hash only depends on seed
        //we have already noticed that the final result depends on low 21 bit of current result
        //and the low 21 bit of current result depends on low 21 bit of seed,since xor operation do not effect two bits at different positions. 
		hash = hash * hash * hash * 60493; // the low 21 bit of result only depends on low 21 bit of hash(before).
        hash = (hash >> 13) ^ hash; //for this expression, the low 8 bit only depends on bit 0-7 and bit 13-20
		return hash;//we only need low 8 bit of 
	}

[GregoriusT]

Yeah I simply picked something that would work nicely and randomly for something as simple as Minecraft Terrain Generation, I never paid any mind to how different the seeds are, aside from making sure it is at least different on a basic level for two different seeds.

Afterall, even Minecrafts own RNG is very un-random at times, especially where they use java.util.Random

I dont think I can answer much about the inner workings of a Noise Generator I grabbed online, I only use it to make sure the Stone Layers generate like flattened foam, and also for the Quartz Layer in the Nether (there instead of picking a type of quartz, it instead picks the height at which said quartz generates).