Alpha Piscium SHADER PACK
ALPHA
PISCIUM
> VERSION: 1.8.4
> 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
- > Added limited Built-in PBR support
- > Improved translucent rendering with double refraction
NEW
- > Added limited Built-in PBR support (Foliage SSS, Translucent, and Emissive)
- > Added double refraction for non-water translucents for more accurate light bending
- > Added more per-material translucent absorption settings
IMPROVEMENT
- > Migrated TranslucentSST to the new SST implementation, greatly simplifying the code
- > Improved cloud spherical shell setup
- > Improved water scattering with new phase function based on Petzold data
FIX
- > Fixed translucent sky reflection error
- > Fixed DH (Distant Horizons) support
- > Fixed missing TAA clamp mix logic
- > Fixed cloud spherical shell setup
- > Fixed insanely bright emissive from end rod and charged lightning rod
MISC
- > Increased default PCSS sample count for better shadow softness
HIGHLIGHT
- > Major performance optimizations on rasterization pass
- > Config profiles for different quality/performance tiers
NEW
- > Added config profiles for different quality/performance tiers
- > Added Assume NV GPU option for NVIDIA-specific optimizations
- > Separated SSS sample count from blocker search count for better control
IMPROVEMENT
- > Optimized gbuffer pass viewZ attribute by computing from gl_FragCoord.w
- > Optimized terrain draw normal vertex attributes
- > Optimized shadow pass attributes
- > Optimized denoiser reproject register usage
- > Optimized denoiser stabilization pass occupancy
- > Removed some vertex attributes for passes that don't need them
- > Optimized SST register usage and ray sorting key layout
- > Optimized GI5 storing handle register usage
- > DenoiseBlur FP16 optimization
- > ReSTIR temporal reuse math simplification
- > Early return branching optimization
- > Updated TAA filter kernel for lower quality profile
- > Reduced TAA motion blur
- > Tone mapping tweak
- > Moved cloud clear from GIReproject to ShadowSample pass to balance VRAM loads
- > Moved fast history storing to history fix pass to balance VRAM loads
- > Emissive color curve now performed in input color space for better consistency
- > Removed spatial reuse feedback due to firefly artifacts
FIX
- > Fixed hit distance on disocclusion
- > Fixed backward analysis distance check
- > Fixed GBufferTranslucent material id reading
- > Fixed RTWSM forward analysis writing position
- > Fixed extra water tinting
- > Fixed history length diffusion killing disocclusion fix
MISC
- > Removed unused shadow specular output and associated references
- > Removed reservoir age reset
HIGHLIGHT
- > SSS rewrite
- > Improved cumulus modeling
NEW
- > Added Shadow hardening filter
IMPROVEMENT
- > SSS Rewrite
- > Improved RTWSM Backward Perpendicular Function
- > Reduced shadow bias
- > Improved cumulus modeling
- > Optimized ShadowSample pass register usages
- > GI history length filter tweak
- > TAA YCog conversion optimization
- > Optimized RCAS
- > Optimized cumulus base coverage noise
- > Optimized ray sorting by skipping empty bins
- > ReSTIR temporal reuse register usage optimization
- > Optimized TAA SM usage
MISC
- > Removed old SSS settings
- > Updated file walking to follow symbolic links in addStuff function
- > Detail noise toggle for debug
- > GBuffer debug scaling
NEW
- > Added GI SST steps options
- > Added Color McSpaceFace colorspace for rendering
IMPROVEMENT
- > Improved Water Caustics and make it enabled by default
- > Improved PCSS
- > Improved denoiser to reduce fireflies
- > Increased environment probe range setting maximum
- > Adjusted water wave
- > Improved shadesmith tilling algorithm to reduce VRAM usage
FIX
- > Fixed potential cloud banding caused by bad randoms
- > Fixed cloud multi-scattering radius setting
- > Fixed solid shadow and caustics mixing
- > Fixed randomly appeared black line in GI accumulation
- > Fixed missing denoiser stabilization
- > Fixed twilight color banding
MISC
- > Updated sponsor list
- > Removed unused CSR32F tile
HIGHLIGHT
- > Diffuse GI overhaul with ReSTIR SSGI
- > Denoiser overhaul with ReBLUR-based denoiser
NEW
- > Integrated Shadesmith for shader release optimization
- > Added translucent absorption saturation setting
IMPROVEMENT
- > Diffuse GI overhaul with ReSTIR SSGI
- > Denoiser overhaul with ReBLUR-based denoiser
- > Optimized various passes with custom Z-order thread group tiling
- > Optimized various passes's VRAM bandwidth usage
- > Optimized Hi-Z SST
- > Replaced `imageLoad` with `texelFetch` for performance
- > Refactored post-processing pipeline
- > Improved HiZ mip tiles
- > Enhanced TAA with more filter options
- > Improved TAA sharpness, reduced motion blur and ghosting
- > Improved image sharpening
- > Updated default tonemap setting
- > Migrated various images to Shadesmith tiles
- > Improved bloom stability
- > Tweaked auto exposure
- > Tweaked emissive default settings
- > Adjusted translucent SST thickness factor for less flickering and false hits
- > Removed unused skylut
FIX
- > Fixed backward SST (Screen-Space Tracing) near camera
- > Fixed HiZ backward tracing failing in some cases
- > Fixed missing sky reflection at night
- > Fixed ghosting over sky
- > Fixed cloud curl noise default strength
- > Fixed incorrect cloud multiple scattering math
MISC
- > Updated build scripts to include branch names in zip files
- > Updated release script to support beta releases on dev branch
- > Improved shift-program script to handle different worlds and no-suffix passes
- > Removed old unused CAS code
- > Added dynamic range to debug text
ROADMAP
v1.7 CLOUDS
Cumulus Overhaul / Atmosphere / Water Volumetrics
v1.8 DIFFUSE GI
ReSTIR / Denoiser Overhaul / PCSS Optimization
v1.9 SPECULAR GI
Specular Global Illumination
v1.10 VOXY
Voxy Support / Screen Space Shadow / Light Leak Fixes
v1.11 VOLUMETRICS
Cloud Sky Lighting / Fog / Cloud Shadows
v1.12 PARALLAX
Steep/Smooth Parallax Mapping / Parallax Shadows
[PENDING DATA] v1.13+ ADVANCED CLOUDS // ALTOCUMULUS // CIRRUS
> 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