Alpha Piscium is a high-quality, realistic Minecraft shaderpack that brings cutting-edge rendering techniques to the game. Featuring ReSTIR-based global illumination, physically-based atmospheric scattering, volumetric clouds, and advanced shadow mapping, it delivers a cinematic visual experience grounded in real graphics research.Documentation Index
Fetch the complete documentation index at: https://mintlify.com/Luna5ama/alpha-piscium/llms.txt
Use this file to discover all available pages before exploring further.
Installation
Download and install Alpha Piscium with Iris in a few steps.
Requirements
Check GPU, driver, and Minecraft version requirements before installing.
Configuration
Tune quality profiles and hundreds of individual settings to your hardware.
PBR Resource Packs
Unlock the full visual potential of Alpha Piscium with a PBR resource pack.
Key Features
Global Illumination
ReSTIR-based screen-space GI with ReBLUR denoising for accurate indirect lighting and color bleeding.
Volumetric Atmosphere
Physically accurate sky using the Unreal Engine Sky Atmosphere technique with epipolar light shafts.
Volumetric Clouds
Real-time cumulus and cirrus clouds rendered with the Nubis volumetric cloud technique.
Adaptive Shadows
Rectilinear Texture Warping Shadow Mapping (RTWSM) with PCSS soft shadow edges.
PBR Materials
LabPBR-compatible physically-based rendering with normal mapping, specular, and subsurface scattering.
Post Processing
Depth of field, bloom, tone mapping, Purkinje effect, and full color management.
Get Started
Check Requirements
Verify your GPU and driver are supported. Alpha Piscium requires a modern NVIDIA or AMD GPU with an up-to-date driver. Intel GPUs are not supported.
Install Iris
Download Iris version 1.7 or higher and install it as a Minecraft mod.
Download Alpha Piscium
Get the latest release from Modrinth or GitHub Releases.
Alpha Piscium works best with a PBR resource pack. Without one, some lighting features like night-time block light will appear dark. See the PBR Resource Packs guide for recommendations.