IRLights
by qualet
IRLights, a Minecraft decoration and utility mod, lets players place and edit dynamic point lights and spotlights in the world through an in-game ImGui editor.
What it does
Pressing a key opens a floating editor panel over the world. From there a player adds, selects and edits lights, moves or rotates them with a 3D gizmo, or types exact numeric values. Lights are saved per world or server and reload automatically. The editor also offers a free-fly camera, so a scene can be lined up without tying the view to the player.
Lighting is drawn by a shader layer, and the mod needs Fabric API and Iris Shaders to run. Files are published for Fabric, Forge and NeoForge across five game versions, 1.20.1 – 1.21.11, under the MIT License, and the project is open source with public source code. Only the client needs the mod. BBS FS is listed as incompatible.
Key features
Point lights and spotlights
Point lights and spotlights can be tuned for hue, brightness, reach, spread, and the size of the inner and outer bulb.
Real-time shadows
Both world blocks and entities cast shadows, and shadow softness and block or entity masking can be set per light.
Volumetric beams
Adjustable beam strength, density and anisotropy, so light shows as god-rays through fog and smoke.
Gobo projection
A black-and-white PNG pattern can be projected out of a spotlight cone, with rotation, scale and invert controls.
Quality presets and caching
Presets from Low to Ultra are available, and a scene-aware cache re-bakes only the parts that changed.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Incompatible 1
Use cases
Building lit interiors
Placing lamps, window light and spotlights to set the mood of a built room or stage.
Staging scenes on a server
Saved lights persist with the world, so a shared build keeps its lighting between sessions.
Who it’s for: Builders, map makers and players who want fine control over lighting and shadows inside a Fabric, Forge or NeoForge world that runs Iris Shaders.
Questions
Does IRLights need Iris Shaders?
Which loader should be used?
Does the server need IRLights installed?
In the catalog
IRLights is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from qualet
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What the author says
A standalone, in-game real-time lighting editor for Minecraft It's made for Fabric 1.20.1-1.21.11. However, 1.20.1 build can be used on Forge and NeoForge (1.21.1) with Sinytra Connector mod
Official listing
- Modrinth page
- modrinth.com/mod/irlights
- Owner
- qualet
- Published
- 2026-07-23
- Updated on Modrinth
- 2026-09-21
- Facts verified
- 2026-10-15