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Fast Noise project artwork

Modrinth · Minecraft mod

Fast Noise

Vanilla Worldgen optimization mod

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Fast Noise release should I use?

Updated 7 days ago
Latest stable file 1.0.40+26.2
Game version 26.2
Loader Fabric, Quilt

Fast Noise 1.0.40+26.2 targets 26.2 with Fabric, Quilt. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.

Where it goes

Is Fast Noise required on the client, server, or both?

Installation on the client is optional. Installation on the dedicated server is optional.

Client Optional
Dedicated server Optional
Loader for this release Fabric, Quilt
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source marks this as usable on both the client and server.

Understand client and server requirements Read the Minecraft installation guide

What else does Fast Noise 1.0.40+26.2 need?

1.0.40+26.2. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

Moonrise Needed by Fast Noise 1.0.40+26.2
incompatible
Matching file found Matched file: 1.1.2+151ce65
AntiXray Needed by Fast Noise 1.0.40+26.2
incompatible
Matching file found Matched file: fabric-1.4.16+26.1

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add Fast Noise without breaking your instance.

Built for Fast Noise 1.0.40+26.2. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.0.40+26.2. It targets 26.2 with Fabric, Quilt; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    Installation on the client is optional. Installation on the dedicated server is optional.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.0.40+26.2. It opens that exact file at the source.

About this project

What does Fast Noise add?

Fast Noise is a modern optimization mod to improve world generation times. I regularly update the mod to latest minecraft versions, bring improvements to the mod, and provide stable releases.

Does the mod change world generation? The mod maintains vanilla parity, including with any datapacks. Do keep in mind, Vanilla non-determinism.

Can I use custom worldgen mods with this? Yes, I try my best to maintain mod compatibility, and only modify safe code. Specific optimizations that may affect mod compatibility are disabled by default.

FastNoise is part of Reverie Projects, check out our other mods as well.

Available on codeberg Available on curseforge Available on modrinth Support me on Ko-Fi

How does this mod work?

Fast noise optimizes storing block and biome data into chunks for the duration of worldgen.

Technical Details

Fast noise replaces populateNoise,populateBiomes in NoiseChunkGenerator and surfaceBuilder in SurfaceBuilder.

Fast noise optimizes world generation by making several strong assumptions about how world generation works. By replacing vanilla's generic and debug code for world storage with faster, more packed calculations, fast noise achieves faster throughput.

Some key methods used to achieve that are, reducing allocations, avoiding palette resizing, delaying/packing block counting, precalculating data,
caching block state information and more.

How fast is it?

About 10-18% improvement to overall worldgen in overworld in 1.21.11 on latest versions.
Much higher improvement in nether, end
Here is a Jmh Benchmark Software.

Chunky benchmark

12 threads w/ mod

[12:39:32] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 16641 chunks (100.00%), Total time: 0:01:37

W/o mod

[12:43:08] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 16641 chunks (100.00%), Total time: 0:01:47

4 threads w/ mod

[12:56:23] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 9409 chunks (100.00%), Total time: 0:01:10

W/o mod

[13:01:11] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 9409 chunks (100.00%), Total time: 0:01:23

With higher distance
W/o mod

[13:11:01] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 19881 chunks (100.00%), Total time: 0:02:43

W/ mod

[13:16:03] [Server thread/INFO]: [Chunky] Task finished for minecraft:overworld. Processed: 19881 chunks (100.00%), Total time: 0:02:21
Jmh benchmark 
Mods used: FastNoise 1.0.37+26.2 on 26.2
ChunkPos: -16,-16 -> 16,16
End ChunkPos: 112,112 -> 144,144
Chunks: 1089
Mods used: c2me-fabric-mc26.2-0.4.2-alpha.0.9.jar

Benchmark                 (worldName)  Mode  Cnt      Score     Error  Units
BiomesBenchmark.biomegen    overworld  avgt    5   3058.005 ± 256.587  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    188.188 ±   3.156  ms/op
BiomesBenchmark.biomegen          end  avgt    5     31.560 ±   4.200  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5  12332.480 ± 364.223  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   2447.385 ±  20.773  ms/op
NoiseBenchmark.noisegen           end  avgt    5   6420.598 ± 195.649  ms/op
SurfaceBenchmark.surface    overworld  avgt    5  14948.653 ± 333.900  ms/op
SurfaceBenchmark.surface       nether  avgt    5   9330.611 ± 243.701  ms/op
SurfaceBenchmark.surface          end  avgt    5   3485.872 ±   8.225  ms/op

Benchmark                 (worldName)  Mode  Cnt      Score     Error  Units
BiomesBenchmark.biomegen    overworld  avgt    5   2980.699 ±  98.824  ms/op
BiomesBenchmark.biomegen       nether  avgt    5    177.827 ±   2.815  ms/op
BiomesBenchmark.biomegen          end  avgt    5     14.990 ±   0.575  ms/op
NoiseBenchmark.noisegen     overworld  avgt    5   9419.623 ± 317.746  ms/op
NoiseBenchmark.noisegen        nether  avgt    5   1253.599 ±  15.977  ms/op
NoiseBenchmark.noisegen           end  avgt    5   5424.879 ±  81.860  ms/op
SurfaceBenchmark.surface    overworld  avgt    5  10490.488 ± 901.258  ms/op
SurfaceBenchmark.surface       nether  avgt    5   3361.448 ±  53.809  ms/op
SurfaceBenchmark.surface          end  avgt    5      1.723 ±   0.289  ms/op

Speedup:

Stage/Dimension Overworld Nether The End
Biome 1.025x 1.058x 2.105x
Noise 1.309x 1.952x 1.183x
Surface 1.424x 2.775x 2023.14x
Old Jmh Benchmark 
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

Vanilla:
Benchmark                 (worldName)  Mode  Cnt     Score    Error  Units
SurfaceBenchmark.surface    overworld  avgt    5  5982.828 ± 17.992  ms/op
SurfaceBenchmark.surface       nether  avgt    5  2677.115 ±  9.293  ms/op
SurfaceBenchmark.surface          end  avgt    5   924.604 ±  5.376  ms/op

With Mod:
Benchmark                 (worldName)  Mode  Cnt     Score     Error  Units
SurfaceBenchmark.surface    overworld  avgt    5  4820.672 ±  24.669  ms/op
SurfaceBenchmark.surface       nether  avgt    5  1914.289 ± 644.099  ms/op
SurfaceBenchmark.surface          end  avgt    5     0.014 ±   0.003  ms/op

Speedup
Overworld: Biome: 1.026x Noise: 1.368x Surface: 1.241x
Nether: Biome: 1.063x Noise: 1.847x Surface: 1.398x
End: Biome: 2.21x Noise: 1.285x Surface: 66357x

The benchmarks may have some inaccuracies.

Socials

Chat with us on discord Chat with me on mastodon Chat with us on Gitter

FAQ and Help

FAQ

Q- What Minecraft versions will the mod be supporting?
A- I'll try to support the latest minecraft version.

Q- Are backports planned?
A- No backports are planned, current backports were a one time thing.

Q- What other mods/dependencies do I need?
A- No dependencies are required.

Q- Will there be a forge backports for 1.19.x 1.20.x?
A- Not planned.

Q- XYZ mod crashes, or generates incorrectly with Fast Noise?
A- Report the issue on codeberg or my socials.

Incompatible mods

Moonrise is incompatible, as It changes minecraft internals drastically
Noisium is incompatible, as Fast Noise is intended as a replacement for noisium.
Anti-Xray is incompatible for now, as it needs to put extra data in minecraft block storage, which breaks fastnoise

Credits

  • Stevenplays, for developing noisium mod, I started developing fast noise while trying to port noisium to latest minecraft.
  • Ishland, for helping with mod, and modern-yarn and neo-loom

Reverie Projects

Consider joining the Reverie Projects for sneak peeks and updates on development! By joining, you can:

  • Get installation help and technical support for alot of awesome projects
  • Get the latest updates about development
  • Talk with and collaborate with our team
  • And just hang out with the rest of our community!

Project description from Modrinth.

Pick your setup

Fast Noise by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

246 available setups

Showing the newest 12 of 114 game versions. Older files are in the list below.

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Fast Noise versions and loaders

100 of 100 releases match

Looking for an older file? The official Modrinth project page is in Resources.