Celeritas/Nothirium Extra

Celeritas/Actinium/Nothirium Extra

Celeritas Extra is an unofficial client-side add-on for Celeritas, built to run on Cleanroom Loader. It provides a wide range of quality-of-life and optimization options, similar to OptiFine and Angelica.

Requirements

Required

• Cleanroom Loader 0.7.11-alpha or newer within the 0.7.x series
• Java 25
• One of the following:
• Celeritas 2.4.0-dev.4 or newer
• Actinium 0.0.12-alpha or newer
• Nothirium 0.4.9-beta or newer, with its required RenderLib dependency (1.4.5 recommended)

Version 0.10.0 uses Cleanroom 0.7.x SDL APIs directly and does not support Cleanroom 0.6.x.
If you use Cleanroom 0.6.x, please use Celeritas Extra 0.9.3.
We plan to continue supporting the 0.9.x series for a while as needed.

Optional

• AssetMover 2.5 or newer

Features

The following settings and features are added by Celeritas Extra. Individual particle and dimension options vary depending on the installed mods and the connected server.

Animations

• Toggle all texture animations
• Toggle water animations
• Toggle lava animations
• Toggle fire animations
• Toggle Nether portal animations
• Toggle other block texture animations

Particles

• Toggle all particles
• Toggle rain splash particles
• Toggle particles when blocks are broken
• Toggle particles while mining blocks
• Adjust spawn percentages for individual particle classes (0–100%; 0% disables spawning)
• Automatically discover vanilla and modded particle classes

Sky, Weather, and Colors

• Toggle sky rendering
• Toggle star rendering
• Adjust the number of stars
• Toggle sun rendering
• Toggle moon rendering
• Toggle rain and snow rendering
• Toggle biome-specific colors
• Toggle biome-specific sky colors
• Toggle void fog

Clouds

• Toggle cloud rendering
• Adjust cloud height and render distance
• Adjust cloud scale (0.25×–4.00×)
• Select cloud translucency (default, always translucent, or always opaque)
• Modern Clouds: use the Minecraft 1.21.6 cloud texture

Fog

• Toggle fog
• Adjust where fog begins
• Adjust fog distance
• Enable or disable per-dimension overrides
• Toggle fog for individual dimensions
• Adjust where fog begins for individual dimensions
• Adjust fog distance for individual dimensions
• Dimension options for vanilla dimensions, registered mod dimensions, and dimensions on the current server
• Preserve blindness, underwater, and lava fog even when normal fog is disabled

Entities and Item Frames

• Toggle item frame rendering
• Toggle armor stand rendering
• Toggle painting rendering
• Toggle player name tags
• Toggle item frame name tags
• Limit entity render distance (0 keeps normal behavior)
• Limit tile entity render distance (0 keeps normal behavior)
• Specify classes exempt from render distance limits in the configuration file, using fully qualified class names or package.*
• Item frame LOD (0 disables it)

Block Rendering, Lighting, and Screen Effects

• Toggle piston extension and retraction animation rendering
• Toggle beacon beam rendering
• Limit beacon beam height to the world height
• Toggle enchanting table book rendering
• Toggle back-face culling for sign text
• Toggle light updates
• Prevent vanilla screen shaders from loading, such as special spectator-mode views

HUD and Overlays

• Display FPS
• Display coordinates
• Option to display coordinates even when debug information is restricted
• Display memory usage percentage
• Select the overlay position (top left, top right, bottom left, or bottom right)
• Select overlay text contrast (plain, background, or shadow)

Debugging, Tooltips, and Notifications

• Adjust the F3 debug screen refresh interval
• Display renderer names in the F3 profiler pie chart
• Display the source mod’s name in item tooltips
• Toggle all toast notifications or individual notification types

Window and FPS Controls

• Select the screen mode (windowed, borderless, or fullscreen)
• Select VSync (off, on, or adaptive; adaptive requires a supported GPU)
• Limit FPS while the window is unfocused
• Limit FPS while the window is minimized
• Limit FPS on menu screens

Settings Screen and Controls

• Search settings
• Display the number of search results
• Focus the search field with Ctrl+F
• Clear the search with Esc or the clear button
• Hold Shift and scroll over a slider row to adjust its value by the configured step

Credits

• FlashyReese — Creator of Sodium Extra and Reese’s Sodium Options
• dima_dencep — Creator of Rubidium/Embeddium Extra
• Txni — Creator of Sodium Extras
• FxMorin — Creator of MoreCulling
• 1foxy2 — Maintainer of MoreCulling
• GTNHteam — Maintainers of Angelica
• mitchej123
• Embeddedt — Creator of Celeritas and Embeddium
• CleanroomMC — Creators of Cleanroom Loader, CleanroomModTemplate, and related tools
• Everyone who provided translation keys

AI Usage

Some code and ideas in this project were implemented with assistance from large language models (LLMs).