RetroPixel
Modrintha custom retro CRT shader pack for Minecraft (Iris compatible). It shrinks the screen resolution to a pixelated 500x700 format, restricts the color palette for a 90s aesthetic
1.0.1 · MC 26.2 · Iris, Optifine
Files
1.0.1
releaseRetroShader 1.0.1
26.226.1.226.1.126.1+3irisoptifine2026-07-19 · 2.2K downloads
retropixel-1.0.1.zip · 2.3 KB
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About
a custom, lightweight shader pack named retropixel that transforms Minecraft into a 90s retro game, tailored specifically for Iris Shaders.
How it Works: Instead of distorting individual block textures (which caused grid-like glitches and color loss initially), the shader renders the entire game normally first, then processes the final output image as a whole.
Resolution Downscaling: The shader forces the screen into a simulated 500x700 pixel grid, creating large, chunky pixels that capture the authentic low-res feeling of retro hardware.
CRT Scanline Effect: By implementing a mathematical sine wave inside the final.fsh shader, we added horizontal dark lines (scanlines) across the screen to replicate the look of an old tube television/CRT monitor.
Color Palette Quantization: The colors are slightly compressed and stepped to give the lighting and textures a distinct, digitized 16-bit era aesthetic.