Today, we’re going to discuss the presentation given at SIGGRAPH 2025 by Thiago Souza, Rendering Technical Director at id Software. He talked about the Global Illumination system developed for their new engine, idTech 8 (used in games like Doom and Indiana Jones). The system replaces slow, static baking with real-time ray tracing using Cascaded Radiance Volumes, allowing for immediate changes in the artistic workflow without having to wait up to 40 hours for bakes.
Watch full presentation:
https://www.youtube.com/watch?v=VTrdeqMMMK0
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https://www.youtube.com/watch?v=HK9z2cR8nlM&list=PLFEJ2E5exsjrjRzhJdOYOmTlcYfK3Hz7_
