Game Boy pixel pipeline explorer

In plain words

Game Boy Pixel Pipeline Explorer is a tool for visualizing how the original Game Boy's Pixel Processing Unit renders graphics. It breaks down the pixel pipeline step-by-step, making it useful for developers building Game Boy emulators or anyone studying the console's technical architecture. The tool helps users understand the internal workings of the Game Boy's graphics system through interactive exploration.

written from the facts on this page · September 2026

From the sources

An interactive, dot-accurate explorer of the Game Boy (DMG) PPU pixel pipeline: step through OAM scan, the BG/window/sprite fetcher, the FIFOs, and the pixel mixer dot by dot, validated against dmg-acid2 and mealybug-tearoom-tests.

# regs: LCDC=91 SCX=00 SCY=00 BGP=FC OBP0=FF OBP1=FF WY=00 WX=07 64 250 SCX 07 <- ly, dot-in-line, reg, value(hex) 80 120 BGP E4 We replay your input through the reference model and pinpoint the first pixel that differs. Files are matched by type/size: drop them in anyfrom pixelpipeline.xyz

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