RayTracing

RayTracing

A modpack that uses the Photonics mod to allow for high-performance raytracing without the need for an RTX GPU. The Photonics mod also adds 3d textures to 2d models.

by stickman11200
8.8K Downloads
0 Followers
fabricMC 1.21.4lightweightoptimization

Screenshots

Nether portal
Nether lighting
Shadows

About this Modpack

A simple mod pack that adds rayracing support to Minecraft using the Photonics mod. It also includes controller support as well as several general optimization mods. The pack doesn't require an RTX GPU to run
-Minimum System Specs: GTX 1650/GTX970/RX580 1080p Med
-recommended at least a GTX 1070 for 1080p ultra
-GTX 1080ti/RTX 3060 12g/RTX 4060/RX 6600xt or better for 1440p ultra

Current Bugs Im aware of:
3d Textures may be glitched or have an odd apearence
The world may not load properly or have visual glitches, reload shaders to fix

Available Versions

RayTracing 1.2.0release
MC 1.21.4fabric5.0K downloads
October 31, 2025
RayTracing 1.1.5.1release
MC 1.21.4fabric1.2K downloads
June 3, 2025
RayTracingrelease
MC 1.21.4fabric624 downloads
April 18, 2025
RayTracing 1.0.0release
MC 1.20.1fabric1.1K downloads
March 3, 2025

How to Set Up a RayTracing Server

1

Order Server

Choose at least 4 GB RAM (6 GB recommended for RayTracing). Based on player count: per 8 players.

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "RayTracing" and click "Install". The fabric loader and Minecraft 1.21.4 are configured automatically.

3

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

RayTracing server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a RayTracing server really need?

Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €5.2/month).

Can I add custom mods to RayTracing without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.4). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

RayTracing server lagging – performance tips

1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.

Rent RayTracing Server

Start your own server with automatic modpack installation.

Recommended RAM:
6 GB(min. 4 GB)
From 5.20 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
MIT License
Server-side
Unsupported
Client-side
Required

Supported Versions

1.21.41.21.11.20.1

Start your RayTracing Server now

From €5.20/month; 6 GB RAM is recommended for best performance.

Configure Server →