What Lux V1 works with.
| Platform | Java Edition |
|---|---|
| Loaders | Iris, OptiFine |
| Minecraft versions | 1.12.2, 1.16.5, 1.18.2, 1.19.4, 1.20.1, 1.21.4 |
Lux V1 is a Minecraft Java Edition shader pack built on Capt Tatsu's BSL Shaders and rendered through Iris or OptiFine. It leans into fantasy-toned lighting rather than strict photorealism, adding PBR block mapping, aurora-like volumetric light shafts, and a reworked End dimension sky on top of BSL's shadow and reflection base. Modrinth tags it as a medium-impact pack, and the newest build, Lux v1.2, tops out at Minecraft 1.21.4.
What changes in-game
Because Lux builds directly on BSL Shaders, most of its core rendering carries over from that base, and Lux's own additions sit on top of it.
- Realtime shadows and ambient occlusion inherited from the BSL Shaders base
- Aurora-like volumetric light shafts over open terrain at night
- PBR-style normal and specular mapping on supported blocks, most visible on blocks like magma
- Water and wet-surface reflections
- A distinct nebula-style sky in the End dimension
How to install Lux V1
If you have not set up a shader loader before, our shader installation guide covers Iris and OptiFine setup step by step.
- 1.Install Iris or OptiFine for your Minecraft version first.
- 2.Download Lux V1 from its official Modrinth page.
- 3.Drop the downloaded folder or zip straight into your .minecraft/shaderpacks folder.
- 4.Launch Minecraft, open Options, then Video Settings, then Shaders, and select Lux from the list.
Version support and update status
Lux v1.2 shipped in March 2025 and is still the newest build across both Iris and OptiFine. Modrinth's version metadata reaches back to 1.7.10, but the versions worth targeting today are the more recent releases, since older ones see little practical use.
Performance and settings
Modrinth categorizes Lux V1 as medium performance impact, not a potato-friendly shader. It ships with an unusually wide settings menu that rewards players willing to tune individual effects like volumetric lighting and reflections, but there is no built-in low-end preset, so getting a smooth frame rate on modest hardware takes some manual adjustment.
Licensing and where to get it
Lux V1 is marked all rights reserved on Modrinth. Its own agreement points to Capt Tatsu's BSL Shaders terms: personal use and modification are fine, but redistributing the pack elsewhere needs the creator's permission. Grab it from the official Modrinth listing or the creator's own CurseForge listing rather than a third-party download site.
Questions about Lux V1.
5 questions
How do I install Lux V1?
Install Iris or OptiFine for your Minecraft version first, then download Lux V1 from its official Modrinth page. Drop the shader folder or zip into your .minecraft/shaderpacks folder without unzipping further, launch Minecraft, open Options, then Video Settings, then Shaders, and select Lux from the list.
Does Lux V1 work with Iris and OptiFine?
Yes. Every published build of Lux V1, including the current Lux v1.2, targets both Iris and OptiFine, so the choice comes down to which loader you already use for other mod support. Neither loader unlocks extra effects the other lacks.
Which Minecraft version does Lux V1 support?
Lux v1.2, published in March 2025, is the newest build and supports up to Minecraft 1.21.4 on both Iris and OptiFine. The project has not shipped an update since, so it has no build for the current year.drop (26.x) release line.
Is Lux V1 good for low-end PCs?
Modrinth categorizes Lux V1 as medium performance impact, not a potato-friendly pack. It ships with a wide settings menu, so players on modest hardware can turn down individual effects like volumetric lighting, but there is no pre-built low-end preset out of the box.
Is Lux V1 based on another shader pack?
Yes. Lux V1 is built directly on Capt Tatsu's BSL Shaders, reusing much of its rendering pipeline while adding its own PBR block mapping, light shafts, and End dimension sky. Its usage terms follow BSL Shaders' own agreement rather than a separate license.
