saadam1n/MinecraftShaderProgramming ? reverse-engineered prompt

Build me a simple Minecraft shader tutorial project for OptiFine that helps people learn how custom shaders work step by step.

I want the repo to include a beginner friendly introduction, then a few progressively more advanced shader examples that show the full shader program, composite and gbuffers, advanced lighting, and shadow mapping. The intro should explain the basics in plain language, and the other tutorial folders should be usable as shader packs people can drop into their shaderpacks folder.

Please make the instructions easy to follow for someone who is new to shader programming, and include a clear setup guide for installing OptiFine and using the repo with Minecraft. If it helps, look up current OptiFine shader pack docs online so the tutorial matches how things work now.

Keep the code examples clean and commented, and make the README explain what each tutorial teaches and where someone should start if they want to learn from scratch.