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How to debug random graphics bugs

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Jan Mróz

Proposed by Jan Mróz

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Description

How to debug random graphics bugs is Jan Mróz's Procedural Pixels guide to intermittent single-frame rendering failures that evade normal debuggers. He opens with stretched meshes, rare flashes, and hardware-specific QA reports that resist reproduction when a debugger attaches.

The workflow covers deterministic repro, automated frame differencing, divide-and-conquer isolation of draw calls and shaders, removing undefined behaviour, and in-shader error reporting when tools miss one-frame glitches. Past Unity and platform war stories illustrate weeks-long investigations.

Advanced graphics engineers and technical artists who already use capture tools but lack a playbook for flaky GPU issues will get the most value. Patience with logging and test harnesses is assumed.

The article is a free long post on proceduralpixels.com meant as a bookmarkable reference during production hardening.

Procedural Pixels debugging guidance is often shared when teams face driver- or platform-specific visual spikes without stable repro steps.