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Eternal Prism - Lightweight Fantasy Shader

SHADER

Vibrant water, night aurora, swaying foliage and soft shadows in a lightweight vanilla-like shader for Iris.

Eternal Prism is a shader pack built for players who want to make vanilla Minecraft feel more alive without sacrificing performance. Many shaders add heavy post-processing that can cut frame rates in half, but this pack uses efficient algorithms to keep the game smooth on mid-range hardware. It solves the problem of flat, static worlds by adding animated water with real wave-derived normals, dynamic aurora borealis at night, and foliage that sways in the wind — all while preserving the recognizable vanilla look.

This pack is ideal for survival players, builders, and explorers who want a visual upgrade that doesn't demand a top-tier GPU. The quality presets — LOW, HIGH, SUPER_HIGH, and ULTRA — let you fine-tune water wave detail, shadow resolution and distance, aurora complexity, and bloom strength directly in the Shader Options menu. No need to manually edit files or reinstall.

  • Animated water: Real-time wave normals, sun glint, and Fresnel transparency for shallow edges.
  • Aurora borealis: Procedural night sky effect — each night looks different, with no repetition.
  • Swaying foliage: Leaves, grass, and flowers react to wind, adding subtle movement to the environment.
  • Soft dynamic shadows: Leaf-accurate cutout shadows with reduced aliasing, currently a first pass.
  • Atmospheric fog & sky gradient: Depth-based fog and richer day/night sky colors for more depth.

Requirements: Minecraft 1.21.11 and Iris Shaders. This is an early build — shadows in particular may have minor artifacts on some setups. Feedback is welcome. Installation is simple: download the .zip, place it in the shaderpacks folder, and select it from the in-game Shader Packs menu. Quality presets are adjustable via the gear icon.