Genesis

A very lightweight Iris-based shader that recreates the visual style of the classic Minecraft Alpha 1.1.2_01 version with maximum accuracy.

This shader fully preserves the characteristic aesthetic of the early game version, including specific light processing, color reproduction, and atmospheric effects that were inherent to the Alpha version. The graphical improvements are minimal and aimed solely at maintaining the authentic appearance without excessive modernization.

The main advantage of this solution is stable performance with minimal system load. The shader is optimized for modern versions of Minecraft (1.20 and above), allowing you to enjoy vintage graphics without losing performance.