FastPBR is RRe36 optimising rather than maximising: full PBR materials and realistic atmospheric scattering, deliberately budgeted so mid-range and even entry-level GPUs stay comfortable. It is the sensible middle ground between a vanilla-like pack and something as demanding as Kappa, and it pairs well with a PBR resource pack. All Rights Reserved, so download it from the official page.

How to install FastPBR

1. 1Install a shader loader for Minecraft 1.18.2 – 1.21.4 — Iris (pairs with Sodium) or OptiFine.FastPBR is a shaderpack, so it needs a loader to run.
2. 2Download the FastPBR .zip from the button above — keep it zipped. RRe36’s licence doesn’t permit re-hosting, so that button takes you to the official modrinth.com page — always the newest build, straight from the author.
3. 3Drop the .zip into your .minecraft/shaderpacks folder (%appdata%\.minecraft\shaderpacks on Windows, ~/Library/Application Support/minecraft/shaderpacks on macOS).
4. 4Launch the game, open Options → Video Settings → Shaders, and select FastPBR.

Performance & what to expect

FastPBR is rated low performance impact. It is comfortable on entry-level dedicated GPUs at a normal render distance. It renders atmosphere and pbr. The look is realistic. Because it supports PBR, it looks its best with a matching texture set — browse our free resource packs for one with normal and specular maps.

More realistic shaders

Body CameraMedium impact · by LoLip_pNoble ShadersHigh impact · by BelmuTMGlimmerHigh impact · by jbritainPixel PerfectHigh impact · by epcrDirt RTHigh impact · by sjrsjzCH MotionPotato impact · by thompiejompie

FastPBR is created by RRe36 and published under its own All Rights Reserved terms. We link to the author’s official download rather than mirroring it — the pack is theirs, and its licence asks that it stay that way. MineSpecs is an unofficial fan project and is not affiliated with RRe36, Mojang Studios or Microsoft.