This is a fork of lumien231’s Chunk Animator which includes support for newer Minecraft versions.
This can be downloaded from the the CurseForge or Modrinth page.
When new chunks are loaded in vanilla minecraft they simply "appear instantly", with this mod they can be animated to appear from below, above, or the side. This mod shouldn't impact FPS considerably because all it does is render chunks "somewhere else".
As of 1.21, this project is only on NeoForge. Unfortunately this is the only mod loader I have the time to support for the time being.
Once you install this mod it will be in mode 0, that means that all chunks will appear from below. In the config file you can switch between 5 modes and also change the duration of the animation. In addition you can also enable an option that makes chunks that are close to the player not animate.
You can also change the easing function that is used in the animation, this is a website where you can compare them.
To learn more about how the animations can be configured, visit this page on the config.
OptiFine is supported for versions below 1.21, however for the chunks to be animated you will need to make sure the render regions option is disabled (set to false). This can be found under the Performance screen in Video Settings, or as ofRenderRegions in the optionsof.txt in your Minecraft directory.
If you find any bugs or have an idea for a new feature, please open a new issue using the relevant template. For any other discussion or support, please use the Discussions tab.