Ultra Realistic PBR Shader Pack

Ultra Realistic PBR v1.0

A next-generation physically based rendering shader pack engineered for astronomical accuracy, planetary-scale optics, and atmospheric realism in Minecraft.

Features

• Astronomical Sky: True 23.5° axial tilt sidereal rotation, dynamic solar system planets (Venus, Jupiter, Mars, Saturn), and Milky Way dust absorption lanes.
• Apollo 17 Earth: Photorealistic rotating "Blue Marble" Earth in The End dimension, featuring continental geography, dynamic cyclone cloud systems, specular ocean glints, polar ice caps, and night-side city lights.
• Fluid Optics: Translucent water absorption driven by Beer-Lambert law and Fresnel equations, combined with multi-frequency domain-warped waves.
• Weather & SSR: Rain accumulation causes porous surface darkening and real-time Screen-Space Reflections (SSR) across wet blocks and puddles.
• Soft Shadows: 12-Tap Poisson disk filtering with slope-scale and distance-adaptive depth biasing to eliminate shadow acne and Peter Panning.
• Color Science: ACEScg filmic tone mapping with dark-adapted scotopic vision (Purkinje effect).
• Dimension Safety: Native multi-dimension pipeline isolation (world0, world1, world-1) guaranteeing crash-free cross-dimension travel.

Requirements

• Minecraft Version: 1.16.5 – 1.21+
• Shader Loaders: Iris Shaders / Oculus + Sodium
• Hardware: OpenGL 4.5+ compatible GPU (NVIDIA GTX 1660 / RTX 3060 / RTX 4060+ or AMD equivalent)

Credits

• Lead Architecture & Pipeline: Yang Jinchen (Jason Yang)
• Chief QA & Art Direction: Liu Yilin (EasonBoy666)