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Mineforgian

Alpha Piscium

High-quality realistic Minecraft shaderpack.

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256K
Подписчики
193
Обновлён
15 августа 2026 г.
Лицензия
GPL-3.0-only

Опубликован 9 октября 2025 г.

Исходный кодСообщить об ошибке

Alpha Piscium

High-quality realistic Minecraft shaderpack featuring global illumination, volumetric clouds, atmospheric scattering, and stunning visual effects.

Official Website link: https://alphapiscium.org/
Discord server link: https://discord.gg/E2Uq2MmHgq

Alpha Piscium

Features

Installation

  1. Download the Alpha Piscium shaders for Minecraft from Modrinth or GitHub Release.
  2. Install Iris shader loader.
  3. Open the Minecraft launcher and choose the Iris profile you just created with the version you're playing.
  4. Launch Minecraft.
  5. Go to Options → Video Settings → Shader Packs, then click Open Shader Pack Folder.
  6. Move the downloaded ZIP file into this folder (.minecraft/shaderpacks).
  7. In-game, select the newly installed pack from the shaders list. (If you select a shader pack using Iris, its filename will turn yellow.)
  8. Click Done or Apply and the shader will be loaded.

FAQ

  • No lighting at night: Please use PBR resource packs. For vanilla style, SPBR is recommended. Otherwise, try Patrix.
  • Can't load shaderpack: Please use Iris with version 1.7 or higher.
  • Everything goes dark when turning back: This is due to the limitations of screenspace techniques. There isn't a perfect way to fix this.
  • Intel GPU: Alpha Piscium uses cutting-edge graphics technology. Unfortunately, Intel doesn't maintain their OpenGL driver well, so Intel GPUs are not supported.
  • AMD GPU: Check if your GPU driver is newer than 22.7.1. If older, please update your driver.
  • Other loading errors: Press Ctrl+D in Iris's shaderpack selection screen, then reload the shaderpack. Make an issue with the error message and the relevant files in .minecraft/patched_shaders as shown in the error message.

Roadmap

1.9 Specular GI

  • Add specular GI

2.0 World Space Tracing

  • Add voxelization and voxel tracing

2.1 DRT Update

  • Release Skibidi DRT
  • HDR mod support?

2.2 Volumetrics shadowing

  • Add cloud shadowing to volumetrics
  • Add screen space shadow to volumetrics

2.3 Local fog

  • Add ground fog

2.4 Cloud shadow

  • Add cloud shadow to terrain rendering
  • Add cloud to reflection/GI

2.5 Cloud update part 1

Improve cloud lighting

  • Add altocumulus
  • Rewrite cirrus modeling

2.6 Cloud udpate part 2

  • Rewrite cumulus modeling
  • Add stratocumulus and nimbostratus

2.7 Upscaling???

  • Add FSR 3.1 (no framegen)

2.8 Parallax mapping???

  • Add steep/smooth parallax mapping
  • Add parallax mapping shadow

AI / LLM Code Disclosure & Compliance Notice

Please be advised that this codebase incorporates software components generated or assisted by Large Language Models (LLMs). If your personal policy, regulatory constraints, or usage criteria prohibit the deployment or execution of AI-generated software, you are requested to immediately cease utilization and remove all instances of Alpha Piscium from your systems.

License

Files under the scripts directory are licensed under the MIT License. All other files are licensed under the GNU General Public License v3.0.

Ченджлог

1.9.2Релиз26.1.1, 26.1.2, 26.2 · 15 августа 2026 г.

Highlight

  • Improved ReSTIR GI, denoising, shadows, and compute-pipeline performance
  • Stabilized specular GI demodulation and fixed remaining numerical overflow

New

  • Added configurable built-in metalness overrides and material data for known blocks
  • Added comprehensive English and Simplified Chinese maintainer documentation

Improvement

  • Optimized pass ordering and combined direct lighting with sky compositing
  • Improved ReSTIR spatial clustering, tiling, temporal neighbor sampling, and reuse-texture generation
  • Reduced compute-shader texture fetches, material decoding, dynamic indexing, and redundant work
  • Simplified and optimized GI denoising by removing spatial variance processing and unrolling shared-memory kernels
  • Improved specular denoiser accumulation, history reprojection, and remodulation
  • Bypassed TAA-dependent FXAA and sharpening passes when TAA is disabled

Fix

  • Fixed selection-box geometry writing an unintended view-depth target and causing a glow artifact
  • Fixed specular GI numerical overflow, built-in PBR F0 handling, and minimum-reflectance clamping
  • Fixed CIE XYZ luminance calculations
  • Fixed clouds disappearing during shadow sampling
  • Fixed atmospheric view-depth reconstruction, GI history dithering, and invalid spatial-reuse traces

Misc

  • Removed obsolete shader code, redundant texture reads, unused denoiser resources, and stale GI debug data
  • Updated package branch detection and support for newer Minecraft version numbers
  • Fixed Windows options-generator recursion and Kotlin launcher detection
1.9.2-Beta1Бета26.1.1, 26.1.2, 26.2 · 5 августа 2026 г.

Highlight

  • Improved ReSTIR GI, denoising, shadows, and compute-pipeline performance
  • Stabilized specular GI demodulation and fixed remaining numerical overflow

New

  • Added configurable built-in metalness overrides and material data for known blocks
  • Added comprehensive English and Simplified Chinese maintainer documentation

Improvement

  • Optimized pass ordering and combined direct lighting with sky compositing
  • Improved ReSTIR spatial clustering, tiling, temporal neighbor sampling, and reuse-texture generation
  • Reduced compute-shader texture fetches, material decoding, dynamic indexing, and redundant work
  • Simplified and optimized GI denoising by removing spatial variance processing and unrolling shared-memory kernels
  • Improved specular denoiser accumulation, history reprojection, and remodulation
  • Bypassed TAA-dependent FXAA and sharpening passes when TAA is disabled

Fix

  • Fixed selection-box geometry writing an unintended view-depth target and causing a glow artifact
  • Fixed specular GI numerical overflow, built-in PBR F0 handling, and minimum-reflectance clamping
  • Fixed CIE XYZ luminance calculations
  • Fixed clouds disappearing during shadow sampling
  • Fixed atmospheric view-depth reconstruction, GI history dithering, and invalid spatial-reuse traces

Misc

  • Removed obsolete shader code, redundant texture reads, unused denoiser resources, and stale GI debug data
  • Updated package branch detection and support for newer Minecraft version numbers
  • Fixed Windows options-generator recursion and Kotlin launcher detection
1.9.1Релиз26.1.1, 26.1.2, 26.2 · 28 июня 2026 г.

Highlight

  • Reworked ReSTIR GI reuse and denoising to reduce fireflies, specular instability, and temporal artifacts
  • Optimized the reuse texture pipeline to lower overhead while keeping clustered spatial reuse effective

New

  • Added water wave frequency and speed settings
  • Added a PowerShell shadesmith runner for configured local execution

Improvement

  • Improved ReSTIR spatial reuse with quad-group / 8-sample grouping, tighter pass limits, and reuse-texture packing changes
  • Improved specular GI stability with better temporal reprojection, pairwise MIS metadata handling, and specular-lobe-biased resampling
  • Reduced blur and flicker in denoising, TAA, RTWSM, diffuse AO, water surfaces, and auto exposure behavior at low FPS
  • Optimized shadow sampling and removed unnecessary work from specular reprojection and caustics filtering
  • Updated shader/options/program generation scripts for the current pass layout and multi-properties workflow

Fix

  • Fixed ReSTIR spatial reuse texture tiling and continue-trace discard issues
  • Fixed specular reprojection failure noise and over-blurred smooth reflections in the denoiser
  • Fixed the SETTING_DENOISER_ACCUM switch and the spatial-filter disabling setting
  • Fixed TAA edge-pixel out-of-bounds artifacts
  • Fixed screen-space shadow acne on very flat surfaces
  • Fixed indirect/program pass generation issues

Misc

  • Merged GI edge classification with volumetrics depth layers
  • Moved ReprojectInfo out of GI common utilities and cleaned up related reuse / temporal code
  • Removed obsolete caustics filter, redundant surface-position specular reprojection, and unused GI helper paths
1.9.1-Beta1Бета26.1.1, 26.1.2, 26.2 · 17 июня 2026 г.

Highlight

  • Reworked ReSTIR GI reuse and denoising to reduce fireflies, specular instability, and temporal artifacts
  • Optimized the reuse texture pipeline to lower overhead while keeping clustered spatial reuse effective

New

  • Added water wave frequency and speed settings
  • Added a PowerShell shadesmith runner for configured local execution

Improvement

  • Improved ReSTIR spatial reuse with quad-group / 8-sample grouping, tighter pass limits, and reuse-texture packing changes
  • Improved specular GI stability with better temporal reprojection, pairwise MIS metadata handling, and specular-lobe-biased resampling
  • Reduced blur and flicker in denoising, TAA, RTWSM, diffuse AO, water surfaces, and auto exposure behavior at low FPS
  • Optimized shadow sampling and removed unnecessary work from specular reprojection and caustics filtering
  • Updated shader/options/program generation scripts for the current pass layout and multi-properties workflow

Fix

  • Fixed ReSTIR spatial reuse texture tiling and continue-trace discard issues
  • Fixed specular reprojection failure noise and over-blurred smooth reflections in the denoiser
  • Fixed the SETTING_DENOISER_ACCUM switch and the spatial-filter disabling setting
  • Fixed TAA edge-pixel out-of-bounds artifacts
  • Fixed screen-space shadow acne on very flat surfaces
  • Fixed indirect/program pass generation issues

Misc

  • Merged GI edge classification with volumetrics depth layers
  • Moved ReprojectInfo out of GI common utilities and cleaned up related reuse / temporal code
  • Removed obsolete caustics filter, redundant surface-position specular reprojection, and unused GI helper paths
1.9.0Релиз26.1.1, 26.1.2, 26.2 · 26 мая 2026 г.

Highlight

  • Added specular GI

New

  • Added specular GI

Fix

  • Increased AE speed at low fps
  • Fixed screenspace shadow uninitialized warnings
  • Fixed handheld alpha test shadow
  • Fixed Voxy before 0.2.6
1.9.0-Beta1Бета26.1.1, 26.1.2, 26.2 · 19 мая 2026 г.

Highlight

  • Added specular GI

New

  • Added specular GI

Fix

  • Increased AE speed at low fps
  • Fixed screenspace shadow uninitialized warnings
  • Fixed handheld alpha test shadow
1.8.6-Hotfix1Релиз26.1.1, 26.1.2, 26.2 · 2 мая 2026 г.

Fix

  • Fixed no voxy bug
1.8.6Релиз26.1.1, 26.1.2, 26.2 · 26 апреля 2026 г.

Highlight

  • Added Voxy support
  • Switched to Adobe f82 Schlick fresnel, replacing the previous HCM model for more accurate specular appearance

New

  • Added video render mode setting

Improvement

  • Switched to regular spherical cap GGX VNDF sampling for translucent
  • Shadow sample optimization for improved performance

Fix

  • Fixed temporal reuse exploding after zooming in
  • Fixed shadow rendering on SSS (subsurface scattering) surfaces
  • Fixed water scattering overflow near sunset/sunrise
  • Fixed time_interpolate behavior
  • Fixed atmosphere depth break indirect dispatch

Misc

  • Cleaned up SST and ReSTIR temporal reuse logic

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