RexShader
Java shader pack listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
A lightweight, FPS-friendly shader with soft shadows, reflective waving water, warm sunlight, atmospheric fog and waving plants. Includes Low to Ultra…
⬇ Download on Modrinth
Rex Shaders
Rex Shaders is a lightweight shader pack that brings a warm, nostalgic look to Minecraft without destroying your FPS. Soft sunlight, reflective water and gentle atmospheric haze, built to run smoothly even on mid-range hardware.
Features
- Soft shadows with adjustable quality and softness
- Reflective water with animated waves, sky reflections, sun glare and screen-space reflections
- Dynamic sky with warm sunrises and sunsets and deep blue nights
- Atmospheric fog that thickens during rain
- Waving plants: leaves, grass, flowers and crops sway in the wind
- Glowing light sources like lava, lanterns, glowstone and froglights, with a soft bloom effect
- Underwater, lava and powder snow fog
- Custom Nether and End lighting (shadows are disabled there for extra FPS)
- Optional depth of field for cinematic screenshots
Performance Presets
| Preset | Best for |
|---|---|
| Low | Laptops and integrated graphics |
| Medium (default) | Most systems, balanced quality and FPS |
| High | Dedicated graphics cards |
| Ultra | High-end PCs and screenshots (DOF enabled) |
Every effect can be tweaked in-game: shadow quality, shadow distance, sun angle, water transparency, wave speed, fog density, bloom, saturation and more.
Tip: If you need more FPS, lower Shadow Quality, Shadow Distance or turn off Water Reflections first.
Requirements
- Minecraft 1.21.x
- OptiFine (latest version for your Minecraft version)
Installation
- Install OptiFine.
- Go to Options → Video Settings → Shaders → Shaders Folder.
- Drop the
.zipfile into the folder (do not extract it). - Select Rex Shaders from the list.
Feedback
Found a bug or visual glitch? Please report it with a screenshot. Feedback helps improve the pack!
Rex Shaders is an original shader pack written from scratch.
My Website: https://craftrank.org/
- Edition: Minecraft Java
- File type: .zip (resource pack)
- Minecraft versions listed: 1.21, 1.21.1
- How to install: Download the .zip resource pack — do not unzip it. → Put it in .minecraft/resourcepacks. → Enable it in Options → Resource Packs.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as Rex_Shaders.zip
- Download size: 45 KB
- Download link checked 26 Oct 2026 — working
These come from our own check of the pack file, not from the source page.