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Alpha Piscium

High-quality realistic Minecraft shaderpack.
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Alpha Piscium v1.8.3

File nameAlpha Piscium v1.8.3.zip
Uploader
Luna5amaLuna5ama
Uploaded
Feb 8, 2026
Downloads
50.5K
Size
47.3 MB
File ID
7591729
Type
R
Release
Supported game versions
  • 26.1.2
  • 26.1.1
  • 26.1
  • 1.21.11
  • 1.21.10
  • 1.21.9
  • 1.21.8
  • 1.21.7
  • 1.21.6
  • 1.21.5
  • 1.21.4
  • 1.21.3
  • 1.21.2
  • 1.21.1
  • 1.20.6
  • 1.20.5

What's new

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

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