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Avowed: A GPU Technical Retrospective | Unreal Fest Orlando 2025

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Matt Campbell

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Description

Avowed: A GPU Technical Retrospective is a recorded Unreal Fest Orlando 2025 talk by Matt Campbell, lead graphics engineer at Obsidian Entertainment, on GPU work for the shipped Unreal Engine 5.3.2 title Avowed.

The talk focuses on Nanite, Lumen, and virtual shadow maps across Xbox Series S/X and PC quality and performance modes. It covers opaque foliage choices, limiting world-position offset, streaming and LOD cuts to Nanite and shadow cost, hardware ray-traced Lumen and local lights, and PIX capture habits that caught regressions such as an FSR upgrade.

It is aimed at intermediate to advanced Unreal graphics engineers and technical artists shipping UE5 open-world content on consoles. Familiarity with Nanite, Lumen, and frame budgets helps.

The recording is a free YouTube video on the Unreal Engine channel from Unreal Fest Orlando 2025.

It is useful as a production retrospective of UE5 feature choices under small graphics staffing rather than a general engine tutorial.