Shaders for vanilla 1.20 (1.20.4)

Overview

Shader that adds as much as possible from OptiFine shaders to the vanilla transparency shader available in "Fabulous" graphics setting. Due to limited material, light, time, and shadow information, some advanced features are not possible. A good number, however, are. I have ported them here. Most samples in credits are heavily modified to fit with the vanilla pipeline. Supports all FOV and render distances.

Usage

See License.md for licensing. This pack requires Fabulous graphics on. For best experience, use FOV 70 with render distance 16!

Configuration

Some basic settings can be toggled by editing assets\minecraft\shaders\post\transparency.json in uniforms for preprocess0 pass and postprocess2 pass. The following can be changed:

FOVGuess      [30.0, 110.0] 70.0 Default FOV as a fallback
FogDistance   [0.1, 10.0]   3.0  Fog distance multiplier
BloomAmount   [0.0, 1.0]    0.25 Bloom amount to apply
AutoExposure  0.0 or 1.0    1.0  Auto exposure enable
ExposurePoint [1.0, 4.0]    2.0  Target value to expose to  
Vibrance      [0.0, 2.0]    1.0  Color vibrance / saturation

Features

• Water Waves
• SSAO
• SSR
• Revamped Skys: Approximate Atmosphereic Scattering (Overworld), Aurora (End)
• Directional Light
• Screen Space Shadows
• Java Alpha-PBR support (Emissive, Subsurface, Waving)
• Multiplicative Transparency
• HDR Lighting
• Auto Exposure
• Bloom
• Volumetric Clouds
• Compatible with Optifine Fabulous & Dynamic Lights
• Tonemapping

Comparisons

vanilla

shader v1

shader v2

shader v3

Known issues

• shadow jank
• Alpha-PBR specular, metalness
• some translucents visible over fog (slime entities)
• particle and translucent checker when overlapped with solid translucent
• glow item frame items are lit as if outdoors (unfixable atm)
• hand item shading is flat
• lighting changing in caves!!???
• sun reflection in glass artifacts
• black outline under some translucents over sky
• picking up player heads animation not lit correctly
• picking up tools animation not lit correctly
• all picked up items are green when picking up xp at the same time
• visible YUV artifacts in nether in some cases

Credits

• BSL shaders - capttatsu for base SSR https://bitslablab.com/bslshaders/
• Auroras - nimitz (twitter: @stormoid) for base End Auroroa https://www.shadertoy.com/view/XtGGRt
• Non physical based atmospheric scattering - robobo1221 for base sky https://www.shadertoy.com/view/Ml2cWG
• Star Spheremap - peremoya2000 for base stars https://www.shadertoy.com/view/styXWz
• SSAO - reinder for base AO https://www.shadertoy.com/view/Ms33WB