Fast Noise

This mod adds multiple micro-optimizations to world generation.

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Optimizations

What optimizations are applied for noise gen

• [X] Faster resizing of palettedContainer during noise gen
• [X] Faster block state updating during noise gen
• [ ] Faster heightmap calculation

- [ ] Faster block counting Couldn't optimize, and mod (lithium) incompat

Is it different from noisium

Yes, noisium only directly accessed palettedContainer and some other micro-optimizations. This mods adds further optimizations.

Vanilla Parity

Yes, the mod maintains complete vanilla parity.

How fast is it.

Mostly micro-optimizations. Not too fast. Here is a Comparison.

Mods used: Fast Noise 1.0.6+1.21.11
ChunkPos: -16,-16 -> 16,16
End ChunkPos: 112,112 -> 144,144
Chunks: 1089

Optimized:
Benchmark                 (worldName)  Mode  Cnt      Score    Error  Units
BiomesBenchmark.biomegen          end  avgt    5     22.281 ±  0.062  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    214.320 ±  0.280  ms/op
BiomesBenchmark.biomegen    overworld  avgt    5   4688.326 ± 14.383  ms/op
NoiseBenchmark.noisegen           end  avgt    5   3611.556 ±  6.517  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   1276.523 ±  2.584  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  11949.279 ± 66.914  ms/op

Vanilla:
Benchmark                 (worldName)  Mode  Cnt      Score    Error  Units
BiomesBenchmark.biomegen          end  avgt    5     27.645 ±  0.052  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    232.020 ±  0.324  ms/op
BiomesBenchmark.biomegen    overworld  avgt    5   4711.916 ± 37.429  ms/op
NoiseBenchmark.noisegen           end  avgt    5   4340.792 ±  4.311  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   2001.412 ± 15.960  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  13992.189 ± 57.262  ms/op

Speedup
Overworld: Biome: 1.005x Noise: 1.17x
Nether: Biome: 1.082x Noise: 1.567x
End: Biome: 1.24x Noise: 1.201x

Mods used: Fast Noise 1.0.15+26.1 on 26.1 snapshot-6
ChunkPos: -16,-16 -> 16,16
End ChunkPos: 112,112 -> 144,144
Chunks: 1089
Mods used: (c2me)

With mod:
Benchmark                 (worldName)  Mode  Cnt     Score    Error  Units
BiomesBenchmark.biomegen          end  avgt    5    11.786 ±  0.168  ms/op
BiomesBenchmark.biomegen       nether  avgt    5   174.833 ±  1.166  ms/op
BiomesBenchmark.biomegen    overworld  avgt    5  2401.797 ± 31.629  ms/op
NoiseBenchmark.noisegen           end  avgt    5  3052.242 ± 12.358  ms/op
NoiseBenchmark.noisegen        nether  avgt    5  1039.086 ±  6.467  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  8441.811 ± 41.396  ms/op

With only c2me:
Benchmark                 (worldName)  Mode  Cnt      Score    Error  Units
BiomesBenchmark.biomegen          end  avgt    5     26.058 ±  0.245  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    185.957 ±  2.203  ms/op
BiomesBenchmark.biomegen    overworld  avgt    5   2464.937 ± 29.007  ms/op
NoiseBenchmark.noisegen           end  avgt    5   3925.059 ± 14.292  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   1920.705 ±  9.864  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  11552.674 ± 54.112  ms/op

Vanilla:
Benchmark                 (worldName)  Mode  Cnt      Score    Error  Units
BiomesBenchmark.biomegen          end  avgt    5     27.051 ±  0.118  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    239.634 ±  1.702  ms/op
BiomesBenchmark.biomegen    overworld  avgt    5   4589.322 ± 80.331  ms/op
NoiseBenchmark.noisegen           end  avgt    5   4477.113 ± 36.133  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   1951.438 ±  5.748  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  14249.612 ± 57.388  ms/op

Speedup
Overworld: Biome: 1.026x Noise: 1.368x
Nether: Biome: 1.063x Noise: 1.847x
End: Biome: 2.21x Noise: 1.285x

Its hard to benchmark this, just hardware issues cause 50% slower or faster worldgen for me randomly.

I also can't configure threading,forking for jmh.

The benchmarks may have some inaccuracies.

Mod support

It should not conflict with other mods. As long as they don't mixin into populateNoise,populateBiomes function in minecraft. And don't change how minecraft internal block/biome storage works.

Moonrise is incompatible