SIGGRAPH 2025 Advances in Real-Time Rendering in Games: Fast as Hell: idTech8 Global Illumination

Tiago Sousa explains how id Software transitioned idTech 8 to a high-performance real-time global illumination solution for DOOM The Dark Ages.

advances.realtimerendering.com/s2025/index.html ABSTRACT: Learn about idTech 8 and how id Software transitioned from a pre-baked global illumination to a "fast as hell" real-time solution, enabling DOOM The Dark Ages to achieve 60hz or higher on all platforms. SPEAKER: Tiago Sousa is id Software’s Rendering Technical Director, where most recently contributed to the id Tech 8 game engine and the critically acclaimed DOOM The Dark Ages. With over 20 years of experience in the video game industry, Tiago is passionate about computer graphics technology and has worked on notable titles, including Far Cry, the Crysis trilogy, DOOM (2016), DOOM Eternal, Wolfenstein II: The New Colossus, and others.