Alpha Piscium SHADER PACK
ALPHA
PISCIUM
> VERSION: 1.8.5
> 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
- > Major improvements to ReSTIR SSGI stability and quality
NEW
- > Readded RCRS anti firefly to GI denoiser pipeline
- > Added ReSTIR Temporal Reuse Limit setting for better user control on GI responsiveness
- > Added FXAA as TAA history missing fallback
IMPROVEMENT
- > Combined sun and moon Sky-View LUT
- > Optimized colored shadow precondition check
- > Uses blue noises in ReSTIR for better noise distribution
- > Reduced denoiser history fix leaks
- > Improved shadow AABB calculation and cleanup
- > ReSTIR uses full bilateral bilinear temporal resampling to improve stability and quality
- > Updated default accumulation settings for less lighting lags
- > Reduced GI reprojection false anti-stretching history kills
- > GI denoiser history fix skips first 3 LODs for fewer fireflies
- > Replaced bloom hard clipping with soft clipping
- > Switch TAA variance AABB history ratification from clamping to clipping
- > Optimized ReSTIR reuse passes
- > Water volume tweak
- > Use AABB clipping for fast history clamping
- > Use bilinear on fast history for free blurring and fewer noises
- > Use distance between probe pixel position and origin position as fade distance
FIX
- > Fixed atmosphere mie coefficient calculation for low turbidity value
- > Fixed DH water material detection
- > Fixed DH water shadow blending
- > Fixed random emissive from DH solid
- > Slightly mitigated shadow acne
- > Fixed SSS singularity bug in SRGB rendering working space
- > Removed denoiser stabilization pass to fix bleeding
- > Fixed GI grid pattern artifacts caused by bad `reprojectInfo.curr2PrevScreenPos` precision
- > Fixed TAA reset missing
- > Fixed emissive bug on 0 albedo material
MISC
- > Migrated cloud ambient LUT to shadesmith tiles for optimized texture management
- > Cleaned up SSBO usage
- > Removed env probe setup clearing
- > Fixed make zip naming
NEW
- > Added FXAA as TAA history missing fallback
IMPROVEMENT
- > Replaced bloom hard clipping with soft clipping
- > Switch TAA variance AABB history ratification from clamping to clipping
- > Optimized ReSTIR reuse passes
- > Water volume tweak
FIX
- > Fixed SSS singularity bug in SRGB rendering working space
- > Removed denoiser stabilization pass to fix bleeding
- > Fixed RGBA16F atlas size
HIGHLIGHT
- > Major improvements to ReSTIR SSGI stability and quality
NEW
- > Readded RCRS anti firefly to GI denoiser pipeline
- > Added ReSTIR Temporal Reuse Limit setting for better user control on GI responsiveness
IMPROVEMENT
- > Combined sun and moon Sky-View LUT
- > Optimized colored shadow precondition check
- > Uses blue noises in ReSTIR for better noise distribution
- > Reduced denoiser history fix leaks
- > Improved shadow AABB calculation and cleanup
- > ReSTIR uses full bilateral bilinear temporal resampling to improve stability and quality
- > Updated default accumulation settings for less lighting lags
- > Reduced GI reprojection false anti-stretching history kills
- > GI denoiser history fix skips first 3 LODs for fewer fireflies
FIX
- > Fixed atmosphere mie coefficient calculation for low turbidity value
- > Fixed DH water material detection
- > Fixed DH water shadow blending
- > Fixed random emissive from DH solid
- > Slightly mitigated shadow acne
MISC
- > Migrated cloud ambient LUT to shadesmith tiles for optimized texture management
- > Cleaned up SSBO usage
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
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