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Use the GDC 2021 Session Viewer to browse and sort the ever-growing list of sessions by day, time, pass type, topic, and format. All registered attendees will be able to build their personal schedule directly within the event platform, once live early July 2021. All times are listed in Pacific Time.

Advanced Graphics Summit: A Dynamic Skydome System: 'Ephemeris 2'

Wolfgang Engel  (CTO, The Forge Interactive)

Byumjin Kim  (Lead Graphics Programmer, The Forge Interactive)

Date: Monday, July 19

Time: 8:30am - 9:30am

Pass Type: All Access Pass, Summits Pass

Topic: Programming

Format: Session

Vault Recording: Video

"Ephemeris 2" is a highly-optimized skydome system that accurately depicts realistic sky and clouds for real-time games or graphics applications. It features a dynamic 24-hour time cycle comprising sunrises, sunsets, blue sky, and shimmering moon. It supports atmospheric sun scattering using a rendering model based on physical properties, as well as astronomically-correct simulations of sun, stars, and moon. Other features employed by this system include God Rays, Aerial Perspective, dynamically lit volumetric clouds and more. A custom-tailored version of this system shipped with the game Stormland by Insomniac. This presentation will describe a variety of graphics techniques employed by this system and the optimizations necessary to bring them to real-time performance.

Intended Audience

Audience level: All