





Photonics: A Raytracing Mod
An Iris extension that adds voxel based raytracing to Minecraft. With a focus on performance, Photonics is able to deliver performance comparable to that of hardware raytracing.
Shaders that support Photonics:
- Euphoria Patches (requires 1.9.0+ and Photonics v0.3.4+)
- Photon (requires latest from Github & Photonics v0.3.4+)
- Eclipse (requires latest version from Github & Photonics v0.3.4)
- Shrimple (requires latest from GIthub & Photonics v0.3.4+)
Support patched in by the photonics mod:
- BSL (Photonics v0.3.0+ requires 10.1+, v0.2.9 or below requires 8.2.9)
Features
By using it's custom voxel raytracing, Photonics adds many visually stunning effects:
Soft Shadows
Every block casts beautiful soft shadows from block lights!

Global Illumination
Tired of how dull the world is in shadow? Worry not! Photonics adds accurate Global Illumination to shadows.

3D Blocks
Using its voxel raytracing, Photonics can render 16x16x16 block models directly!
Custom Models can also be implemented using MagicaVoxel.

Colored Glass Lighting
Photonics can tint the color of light that passes through glass, casting colored shadows over objects.

Up to 20 lights per chunk
By default, traces 20 lights per chunk, with shader settings allowing you to increase that number to 100!

Notice
- Photonics doesn't utilise Hardware Raytracing, and because Minecraft is built on OpenGL, building in Hardware Raytracing is unfortunately not possible
- This mod is still in Alpha, bugs and compatibility issues are to be expected
- Any mod that modifies Minecraft Rendering/Chunk loading will affect compatibility
- MacOS is not supported!
Development
Updates on the Development can be seen on its Discord server: Photonics Official
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as Photonics-0.3.4.jar — drop this file into the mods folder
- Download size: 661 KB
- Download link checked 26 Aug 2026 — working
These come from our own check of the pack file, not from the source page.