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Ray-Traced Irradiance Fields (Presented by NVIDIA)

Morgan McGuire (Distinguished Research Scientist, NVIDIA)

Location: Room 205, South Hall

Date: Thursday, March 21

Time: 10:00am - 11:00am

Pass Type: All Access, GDC Conference + Summits, GDC Conference, GDC Summits, Expo Plus, Audio Conference + Tutorial, Indie Games Summit - Get your pass now!

Topic: Programming

Format: Sponsored Session

Vault Recording: Video

Audience Level: All

NVIDIA will show how to combine glossy reflection ray tracing with diffuse ray-traced irradiance field probes. This creates a complete dynamic global illumination solution that scales across all DXR GPUs and minimizes light leaking without requiring manual per-probe or lightmap work by artists. It fits into modern game engines by directly replacing screen-space ray tracing and baked irradiance probes. The key breakthroughs are a fast way of ray tracing and updating irradiance instead of denoising individual samples or convolving radiance probes, and a new moment-based depth scheme for preventing light and shadow from leaking through walls.

Takeaway

How to upgrade built-in UE4/Unity/other irradiance probes with RTX and scale across the entire 20xx product line

Intended Audience

Programmers and lighting artists