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floor(IT) - Cursed Pixel-Snapping Shader

SHADER

A cursed, potato-quality shader that floors every vertex coordinate except block entities, creating an intentionally ugly Minecraft experience.

This shader, named floor(IT), performs a single radical operation: it takes the vertex coordinate of every block, entity, and particle, then rounds it down using the floor function. Only block entities (chests, signs, etc.) are left untouched. The result is one of the ugliest, most jarring Minecraft experiences you can install – geometry snaps to a low-resolution grid, animations stutter, and the world looks like a corrupted save file. As a shader developer, I built this specifically to learn GLSL vertex manipulation and to prove that even a trivial mathematical operation can completely break visual coherence.

This shader is not meant for normal gameplay, screenshots, or building. It serves as an educational proof of concept for modders, shader tinkerers, and anyone curious about how vertex shaders operate under the hood. If you want to understand what happens when you deliberately destroy positional data, or if you simply want to laugh at how bad Minecraft can look, floor(IT) is for you. Do not use this in a survival world, on a server, or for any serious project – it will cause visual nausea and make the game nearly unplayable.

  • Floors all block, entity, and particle vertex coordinates, snapping them to integer boundaries.
  • Excludes block entities (e.g., chests, furnaces, hoppers) to preserve usability of storage and crafting interfaces.
  • Produces extreme aliasing, flickering, and geometric distortion that is deliberately ugly.
  • Fully compatible with OptiFine (note: no official support for other shader loaders, but may work with Iris if configured manually).
  • Minimal performance impact – the shader is extremely simple, so even low-end hardware can run it, but visual quality will be terrible regardless.

Requirements: Minecraft Java Edition (1.17 or later recommended), OptiFine HD U or Iris Shaders (1.20+). No backports or updates are planned – this is a one-off proof of concept. Expect broken lighting, culling issues, and a headache-inducing experience. Use only for educational or comedic purposes.