Minecraft Shader Pack

FastPBR by RRe36

A fast and high-quality shaderpack with realistic visuals and PBR atmospherics.

Downloads: 1757720 · Followers: 630 · updated 1 year ago · Latest: 3MU1pMJY

Download FastPBR on Modrinth

About FastPBR

FastPBR is a Minecraft shader pack published on Modrinth by RRe36. A fast and high-quality shaderpack with realistic visuals and PBR atmospherics.

On the technical side, FastPBR ships for Iris Shaders. Runs on the player's Minecraft client. Does not need to be installed on the server.

FastPBR maintains compatibility with 18 Minecraft releases, from Minecraft 1.18.2 up to Minecraft 1.21.4. Always download the file that matches your Minecraft version, and re-check the version dropdown after any Mojang release to avoid crash-on-launch bugs.

Content-wise, FastPBR is categorized as Atmosphere, Low, and Realistic. That means it fits neatly into a wider Minecraft shader pack category so you can pair it with other shader packs from the same tag on this site.

Popularity: FastPBR has been downloaded 1.8M times on Modrinth and was updated 1 year ago. Large download counts combined with recent updates are a strong signal that RRe36 is actively maintaining FastPBR.

Compatibility & requirements

Environment: Client only — Runs on the player's Minecraft client. Does not need to be installed on the server.

Loaders / platforms: Iris Shaders

Supported Minecraft versions (18): 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21, 1.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2

Categories: Atmosphere, Low, Realistic

How to install FastPBR

  1. Match your Minecraft version. Confirm the file you download from Modrinth is tagged for Minecraft 1.21.4.
  2. Install Iris or OptiFine first. Then place the shader .zip into .minecraft/shaderpacks.
  3. Launch and verify. Start Minecraft (or your server) and check FastPBR appears in the mods / plugins / resource packs list.

Frequently asked questions about FastPBR

Which Minecraft versions does FastPBR support?

FastPBR lists support for 18 Minecraft versions. The most recent supported release is Minecraft 1.21.4, with older support running back to Minecraft 1.18.2. Always match the version of the file you download to the Minecraft version your world or server is running.

What mod loader or server platform do I need to run FastPBR?

FastPBR publishes files for Iris Shaders. Install the matching loader (for example, Fabric Loader for Fabric builds or PaperMC for Paper plugins) before dropping FastPBR into your mods, plugins, or resource-pack folder.

Does FastPBR need to be installed on my Minecraft server?

FastPBR is a client-side shader pack. Only the player installs it — you can join vanilla or modded servers without needing them to add FastPBR.

Who created FastPBR?

FastPBR is published on Modrinth by RRe36. The project was first published 1193 days ago. All files are hosted and moderated by the Modrinth team, and RRe36's Modrinth profile links to every other project they maintain.

Is FastPBR still being updated?

Yes — FastPBR was updated 1 year ago on Modrinth. Regular updates from RRe36 generally indicate active maintenance and quicker patches for Minecraft version bumps.

Is FastPBR safe to download from Modrinth?

Yes. Modrinth moderates every file that RRe36 uploads for FastPBR. Files are virus-scanned and reviewed against Modrinth's content policy before publication. Downloading FastPBR directly from its Modrinth page is the recommended way to avoid malware-laced mirrors. Never install shader pack files from unknown third-party sites.

How popular is FastPBR?

FastPBR has been downloaded 1,757,720 times (1.8M) on Modrinth and has 630 followers tracking new releases. High download counts and active follower bases are strong signals of a trustworthy, well-maintained Minecraft shader pack.

What license does FastPBR use?

FastPBR is distributed under the LICENSEREF-ALL-RIGHTS-RESERVED. Read the license on the Modrinth project page before redistributing, forking, or bundling FastPBR into a modpack.

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More by RRe36

Source, safety, and licensing

FastPBR is indexed by MinecraftBible directly from the official Modrinth REST API. All files are hosted on Modrinth, which virus-scans and moderates every upload from RRe36 before publication. Downloading through Modrinth is the recommended safe path — never install shader pack files from unknown mirrors.

License: LICENSEREF-ALL-RIGHTS-RESERVED (LicenseRef-All-Rights-Reserved).

Freshness signal: FastPBR was updated 1 year ago, which is a positive sign of active maintenance.

Author profile: Visit RRe36's Modrinth profile to see every other project they maintain.

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