Alpha Piscium SHADER PACK
ALPHA
PISCIUM
> VERSION: 1.9.2
> TARGET: MINECRAFT JAVA
> TECH: ReSTIR SSGI / VOLUMETRIC / EPIPOLAR
> STATE: EXPERIMENTAL
CORE MODULES
> GRAPHICS PIPELINE
GI LIGHTING
- > ReSTIR SSGI
- > ReBLUR Denoiser
ref: doi/10.1145/3386569.3392481
ATMOSPHERE
- > UE Sky Render
- > Epipolar Sampling
ref: egsr2020
SHADOWS
- > Adaptive RTWSM
- > Rectilinear Warping
ref: Rosen.2012
VOLUMETRICS
- > Nubis Cloud System
- > Real-time Shaping
tech: Guerrilla
CHANGELOG
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
MISC
- > 提升了 ReSTIR GI、降噪、阴影和计算管线的性能
- > 稳定了镜面反射 GI 解调过程，并修复了残留的数值溢出问题
MISC
- > 为已知方块添加了可配置的内置金属度覆盖和材质数据
- > 添加了完整的英文和简体中文维护者文档
MISC
- > 优化了渲染通道顺序，并合并了直接光照与天空合成
- > 改进了 ReSTIR 空间聚类、分块、时间邻域采样和重用纹理生成
- > 减少了计算着色器中的纹理读取、材质解码、动态索引和冗余工作
- > 通过移除空间方差处理并展开共享内存内核，简化并优化了 GI 降噪
- > 改进了镜面反射降噪累积、历史重投影和重调制
- > 关闭 TAA 时跳过依赖 TAA 的 FXAA 和锐化处理
MISC
- > 修复了选择框几何写入多余视图深度目标而导致的发光问题
- > 修复了镜面反射 GI 数值溢出、内置 PBR F0 处理和最小反射率限制问题
- > 修复了 CIE XYZ 亮度计算
- > 修复了阴影采样过程中云层消失的问题
- > 修复了大气视图深度重建、GI 历史抖动和无效空间重用追踪
MISC
- > 移除了过时的着色器代码、冗余纹理读取、未使用的降噪资源和过时的 GI 调试数据
- > 更新了打包分支检测以及对较新 Minecraft 版本号的支持
- > 修复了 Windows 选项生成器递归和 Kotlin 启动器检测问题
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
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
ROADMAP
v1.9 SPECULAR GI
Add Specular GI
v2.0 WORLD SPACE TRACING
Voxelization / Voxel Tracing
v2.1 DRT UPDATE
Skibidi DRT / HDR Mod Support?
v2.2 VOLUMETRIC SHADOWING
Cloud Shadowing / Screen Space Shadow
v2.3 LOCAL FOG
Add Ground Fog
v2.4 CLOUD SHADOW
Terrain Cloud Shadow / Reflection GI Clouds
v2.5 CLOUD UPDATE PT. 1
Cloud Lighting / Altocumulus / Cirrus Rewrite
v2.6 CLOUD UPDATE PT. 2
Cumulus Rewrite / Stratocumulus / Nimbostratus
v2.7 UPSCALING???
FSR 3.1?
v2.8 PARALLAX???
Parallax Mapping + Shadow
[ROADMAP SNAPSHOT] 04/27/2026 // SUBJECT TO CHANGE
> OPEN FAQ LOG
[ERROR: NIGHT LIGHTING MISSING]
> CAUSE: Vanilla assets.
> FIX: Install PBR Pack (e.g., SPBR, Patrix).
[ERROR: LOADING FAIL]
> FIX: Use Iris 1.7+.
> CMD: Press Ctrl+D to reload.
[HARDWARE MATRIX]
INTEL UNSUPPORTED
AMD DRIVER > 22.7.1
NVIDIA OPTIMIZED
[ARTIFACT LOG]
"Darkness when looking back."
> Screenspace limitation. Status: WONT FIX.
FATAL ERRORS: Report to GitHub with logs from .minecraft/patched_shaders