> For the complete documentation index, see [llms.txt](https://daiyaneko.gitbook.io/simple-shader-one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://daiyaneko.gitbook.io/simple-shader-one/about-simple-shader-one.md).

# About Simple Shader One

{% hint style="success" %}
**Shader:** Data that can change the atmosphere of Minecraft. To apply it, you need a prerequisite MOD called Iris or Optifine, and in the case of Iris, you also need to install the Iris prerequisite MOD.
{% endhint %}

## Overview

The shader introduced on this site is "Simple Shader One".

This shader is lightweight because it only puts round shadows.

It's not perfect, but you can enjoy a different atmosphere from vanilla.

## How to install

The installation method is described on the next page.