







Alpha Piscium Shaders implements real-time global illumination using modern screen-space techniques, combined with advanced denoising to maintain visual stability. Lighting, shadows, and atmospheric effects are designed to react dynamically to time of day and weather conditions.
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Features:
- Real-time global illumination
- ReSTIR-based screen-space global illumination
- ReBLUR-based denoising system
- Real-time atmospheric scattering
- Sky atmosphere rendering based on Unreal Engine techniques
- Epipolar sampling for lighting calculations
- Real-time volumetric clouds using Nubis
- High-quality adaptive shadow rendering
- Rectilinear Texture Warping for shadow mapping
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Screenshots:










Alpha Piscium Shaders Download Links
Quick facts
- Edition: Minecraft Java
- File type: .zip (resource pack)
- Minecraft version listed: 1.20.1
- How to install: Download the .zip resource pack — do not unzip it. → Put it in .minecraft/resourcepacks. → Enable it in Options → Resource Packs.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Alpha Piscium Shaders (26.3, 1.20.1) – Global Illumination And Volumetrics is a free Minecraft Java shader. Compatible with Minecraft 1.20.1. Download it and open it directly in the game.