Dive into an in-depth presentation on Lumen, Unreal Engine 5's Global Illumination and Reflections system. Learn about Lumen's goals, features, and settings, and gain a comprehensive understanding of how it works, including its hybrid tracing pipeline, mesh distance fields, and surface cache. Explore optimization techniques, software tracing limitations, and hardware ray tracing capabilities. Discover the intricacies of final gather, reflections, and best practices for using Lumen effectively. Get insights into platform support, performance considerations, and future developments. Witness Lumen in action through content examples and participate in an extensive Q&A session to address specific queries about this powerful lighting technology.
Overview
Syllabus
Countdown
News
Karma Earners
Community Spotlights
Inside Unreal Graphic Intro
Stream Introductions
Presentation
Lumen Goals
Lumen Features
Lumen Settings
Main Controls
How Lumen Works
Hybrid Tracing Pipeline
Mesh Distance Fields
Surface Cache
Visualize LumeScene
Optimization
Software Tracing Limitations
Hardware Ray Tracing
Final Gather
Ray Traces are Slow
Screen Space Radiance Caching
Heavily Downsampled Tracing
World Space Radiance Caching
Tracing Summary
Lumen Final Gather
Reflections
Lumen Reflections
Reflections with HW Tracing
Lumen Reflections vs Ray Traced Reflections
Best Practices
Emissive
Base Color
Indirect Lighting Intensity
Surface Cache
Platforms
Performance
Hope to have for 5.0 Release
Feedback
History of Lumen
Lumen Content Examples
Quick Break Start
Quick Break End
Question and Answers Session
Information and Stream Wrap Up
Taught by
Unreal Engine
