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FastPBR Shader

FastPBR Shader

SHADER
A fast and high-quality shaderpack with realistic visuals and PBR atmospherics.
by RRe36
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2,095,750 downloads
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Updated Oct 14, 2026
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Realistic
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What is the FastPBR Shader?

This is a fast shaderpack that still offers high-quality visuals and uses PBR atmospherics, hence its name.

PBR does not mean specular support, so do not confuse these terms despite this being a common misconception in the shaderpacks community.

Become a Patron

Where can I download it?

Either here or via my website (link below).

What features does it offer?
  • Dynamic soft shadows
  • Optional screen-space indirect lighting using HBIL
  • Temporal Anti-Aliasing and Upscaling (TAAU)
  • Procedural realistic skybox including volumetric clouds
  • Volumetric fog
  • Various optional lens effects such as depth of field, lens flares and vignette
  • Compatibility with Distant Horizons since v2.0
Any Requirements?
  • Iris 1.6.0 or newer
  • OptiFine is NOT supported and will not be unless it catches up with Iris' more advanced featureset
  • A graphics card that supports OpenGL 4.3 or newer
  • Windows/Linux
External Links:
  • My Website: Link
  • My Discord Server: Link
FastPBR v2.0
MC 1.19.3, 1.20.2, 1.21, 1.20.5, 1.19.4, 1.21.4, 1.18.2, 1.19.2, 1.20.3, 1.20.1, 1.20, 1.20.6, 1.19.1, 1.20.4, 1.21.3, 1.21.1, Iris, 1.19, 1.21.2
Release 2025-02-28 Get
FastPBR v1.1
MC 1.19.3, 1.19.4, 1.18.2, 1.20.1, 1.20, Iris
Release 2023-06-13 Get
FastPBR v1.0
MC 1.19.4, 1.18.2, 1.19.2
Release 2023-04-27 Get

Requirements & install

How to use this shader in Minecraft
Shader loader
Iris
Minecraft
1.20.4 – 1.21.4
Install folder
.minecraft/shaderpacks

Install with Iris

  1. Install Iris with the Iris installer (irisshaders.dev); it sets up Fabric and Sodium for you.
  2. Download the shader pack .zip (do not extract it).
  3. Put the .zip into .minecraft/shaderpacks.
  4. In game open Options → Video Settings → Shader Packs, select the pack and click Apply.
Browse more: Iris shaders OptiFine shaders Shaders for 1.21.4 All shaders

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