RTX Remix Renderer

Play Minecraft Java Edition 1.21.1 with real-time path tracing on a GeForce RTX GPU, powered by NVIDIA RTX Remix. This Fabric mod captures terrain, entities, particles, the sky, and clouds from the game and hands them to the RTX Remix runtime, which renders the whole scene path traced.

What To Expect

This is a beta. It was built as a technology showcase, but we love Minecraft and want it to succeed as a rendering mod. We tuned it against one showcase world, built for this project by BlockWorks, and the places that world visits are where it looks and runs best. We have worked hard to fix as many issues as we could, but it ships with known issues, and there are certainly bugs yet to be discovered.

Three areas have had less attention than the rest:

• Other mods. It has had limited testing alongside other mods, and a renderer that takes over the scene the way this one does is likely to conflict with anything that changes rendering or the chunk pipeline.
• A full playthrough. Blocks, mobs, dimensions, and situations the showcase never reaches have had less care, and some will look wrong or run slowly.
• Other versions. It targets Minecraft 1.21.1 only, chosen because that is where the modding community is today. Ports to newer versions are something we hope the community takes on.

Requirements

• Windows 10 or 11, x64 or ARM64.
• Minecraft Java Edition 1.21.1 with Fabric Loader 0.16.5 or newer and Fabric API 0.116.10 or newer.
• 3 GB of free disk space for the mod and the runtime it unpacks.
• NVIDIA driver 616.92 or newer
• Minimum: GeForce RTX 3060 with NVIDIA and 12GB of VRAM
• Recommended: GeForce RTX 5070 and 12GB of VRAM

Install

1. Create a profile for Minecraft 1.21.1 with the Fabric loader, and add this mod to it. The CurseForge app adds Fabric API with it.
2. Launch the profile. The first launch of a new version is slower than usual: the mod unpacks the RTX Remix runtime into the profile's folder before the game window appears, which can look like the game has frozen.
3. Once you are in a world, the renderer compiles shaders. A dark, flat, or half-built scene during this preparation is expected; let it settle before judging the picture.

Optionally, give the profile the JVM arguments our standalone installer sets: a 2 GB heap with G1GC, listed as RECOMMENDED_JVM_ARGS in packaging/installer.ps1.

Getting Started

• F8 turns path tracing off, or back on.
• Options > RTX Remix Settings… holds the mod's settings and a button into RTX Remix's own Graphics Settings.
• Alt+X opens the RTX Remix runtime's developer overlay. While a Remix menu is open, Minecraft receives no keyboard or mouse input; press Alt+X again to return.
• G puts out, and relights, everything lit in your hands.
• /rtx commands toggle parts of the path-traced scene and report the renderer's status.

The In-Game Guide lists every command, key, and mod-added block, including the Copper Beacon, a craftable directional lamp.

Multiplayer

Path tracing runs entirely on your own machine, and the /rtx commands and keys change only what you see. The Copper Beacon is a real block, though: to place one on a server, the server needs the mod installed as well. Multiplayer has had less testing than single-player.

Crash Reports And Privacy

The mod itself collects no data. The RTX Remix runtime it carries can send basic session information and crash reports to NVIDIA. Its First Use Guide asks about both, with both on by default, and the Permissions tab of the RTX Remix Graphics Settings menu changes them at any time. Crash Reports And Privacy lists what is sent, and NVIDIA handles it under the NVIDIA Privacy Policy.

Source, Bugs, And License

• Source code, documentation, and the full player guide: github.com/NVIDIAGameWorks/rtx-remix-minecraft
• Report a bug: Reporting a Bug
• The mod is licensed under the Apache License 2.0. The bundled RTX Remix runtime and its components carry their own licenses, included in the mod JAR under packaging/licenses/ and listed in THIRD_PARTY_NOTICES.md.

NOT AN OFFICIAL MINECRAFT PRODUCT. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT.